0000950170-23-063730 | 10-Q | XBRL Viewer

Print Document View Excel Document

Equity Method Investments and Other Investments - Summary of Statements of operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Shedule Of Equity Method Investment Summarized Statement Of Operations [Line Items]
Revenue	$ 87	$ 24	$ 296	$ 195
Net income (loss)	43,371	(35,701)	(24,753)	(110,768)
COMPASS Pathways Plc Two [Member]
Shedule Of Equity Method Investment Summarized Statement Of Operations [Line Items]
Revenue	0	0	0	0
Loss from continuing operations	(34,062)	(25,536)	(98,514)	(78,212)
Net income (loss)	(33,389)	(18,371)	(85,932)	(60,579)
GABA Therapeutics Inc [Member]
Shedule Of Equity Method Investment Summarized Statement Of Operations [Line Items]
Revenue	0	0	0	0
Loss from continuing operations	(238)	(2,060)	(3,199)	(5,630)
Net income (loss)	$ (238)	$ (2,060)	$ (3,199)	$ (5,630)

- Definition

Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 19
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-19

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(11))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 21: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

+ Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480175/815-40-65-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-8

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 250
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483443/250-10-50-9

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-11

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 205
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480767/946-205-45-3

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483581/946-220-45-7

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(16))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(9))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-09(1)(d))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-3

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 19
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-19

Reference 16: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482765/220-10-50-6

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 18: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 29: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 31: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-05(b)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479557/942-235-S99-1

Reference 32: http://www.xbrl.org/2003/role/disclosureRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-7

Reference 33: http://www.xbrl.org/2003/role/exampleRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 4J
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481175/810-10-55-4J

Reference 34: http://www.xbrl.org/2003/role/exampleRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 4K
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481175/810-10-55-4K

Reference 35: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1A

Reference 36: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482790/220-10-45-1B

Reference 37: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-2

Reference 38: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-1A

Reference 39: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-1A

+ Details

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

+ Details

Net Income (Loss) Per Share

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Net Loss Per Share

15. Net Income (Loss) Per Share

Basic earnings per share are computed based on the weighted-average of the common shares outstanding for the period. The dilutive effect of options and restricted stock units is calculated using the treasury stock method of accounting. The treasury stock method determines the number of common shares that would be outstanding if all the in the money options were exercised and the proceeds were used to repurchase common shares in the open market at the average market price for the applicable time period. The dilutive effect of the 2018 notes is calculated using the if-converted method of accounting. The outstanding 2018 Convertible Notes are issuable upon the exercise of conversion rights of convertible note holders for 387,614 shares of common stock of ATAI Life Sciences AG. Upon conversion of the 2018 Convertible Notes, it is expected that the shares of common stock of ATAI Life Sciences AG issuable upon conversion of the 2018 Convertible Notes would be exchanged on a one-for-sixteen basis for shares of atai. See Note 11 for additional discussion.

Basic and diluted net loss per share attributable to atai stockholders were calculated as follows (in thousands, except share and per share data):


	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
Basic EPS
Numerator:
Net income (loss)	$	43,371		$	(35,701	)	$	(24,753	)	$	(110,768	)
Net income (loss) attributable to noncontrolling interests		(873	)		(1,814	)		(2,821	)		(3,394	)
Net income (loss) attributable to ATAI Life Sciences N.V. shareholders — basic (numerator)	$	44,244		$	(33,887	)	$	(21,932	)	$	(107,374	)

Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. Shareholders (denominator)		155,792,490			156,607,468			155,793,601			154,713,922
Net income (loss) per common share attributable to ATAI Life Sciences N.V. Shareholders - basic	$	0.28		$	(0.22	)	$	(0.14	)	$	(0.69	)
Diluted EPS
Net income (loss)	$	43,371		$	(35,701	)	$	(24,753	)	$	(110,768	)
Net income (loss) attributable to noncontrolling interests		(873	)		(1,814	)		(2,821	)		(3,394	)
Net income (loss) attributable to ATAI Life Sciences N.V. shareholders — diluted (numerator)	$	44,244		$	(33,887	)	$	(21,932	)	$	(107,374	)

Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. Shareholders		155,792,490			156,607,468			155,793,601			154,713,922
Effect of dilutive securities:
Options to purchase common stock		12,426,724			—			—			—
Unvested restricted stock units		3,144,935			—			—			—
2018 Convertible Promissory Note - Related Parties (note 11)		6,201,824			—			—			—
Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. shareholders (denominator)		177,565,973			156,607,468			155,793,601			154,713,922

Net income (loss) per common share attributable to ATAI Life Sciences N.V. shareholders — diluted	$	0.25		$	(0.22	)	$	(0.14	)	$	(0.69	)

Securities that could potentially be dilutive are excluded from the computation of diluted earnings per share when a loss from continuing operations exists or when the exercise price exceeds the average closing price of the Company’s common stock during the period, because their inclusion would result in an anti-dilutive effect on per share amounts.

The following securities were excluded from the computation of diluted net income (loss) per share attributable to common shareholders for the periods presented because including them would have been antidilutive:


	As of September 30,
	2023		2022
Options to purchase common stock		27,974,365		33,534,242
HSOP options to purchase common stock		6,921,829		7,046,496
2018 Convertible Promissory Notes - Related Parties (Note 11)		—		6,201,824
Unvested restricted stock units		—		—
		34,896,194		46,782,562

Net Income (Loss) Per Share - Schedule of Computation of Diluted net Income (Loss) Per Share Attributable to Common Shareholders (Detail) - shares	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	34,896,194	46,782,562
Options to purchase Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	27,974,365	33,534,242
HSOP options to purchase common stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	6,921,829	7,046,496
2018 Convertible Promissory Notes - Related Parties (note 11)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	6,201,824
Unvested restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	0	0

Equity Method Investments and Other Investments - Schedule of Other Investments Held at Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Other Investments, Held at Fair Value	$ 71,511	$ 0
Compass Pathways Plc [Member]
Other Investments, Held at Fair Value	70,787	0
IntelGenx Technologies Corp [Member]
Other Investments, Held at Fair Value	$ 724	$ 0

Stock-Based Compensation - Summary of restricted stock awards (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	$ 8,253	$ 10,515	$ 25,677	$ 30,235
Atai ESOP [Member] \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	7,395	9,258	22,813	26,004
Atai HSOP [Member] \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	744	1,124	2,512	3,651
Other Subsidiaries Equity Plan
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	100	100	300	600
Other Subsidiaries Equity Plan \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	114	133	352	580
Research and Development Expense [Member] \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	3,392	4,057	10,186	11,639
Research and Development Expense [Member] \| Atai ESOP [Member] \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	3,285	3,934	9,866	11,221
Research and Development Expense [Member] \| Other Subsidiaries Equity Plan \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	107	123	320	418
General and Administrative Expense [Member] \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	4,861	6,458	15,492	18,596
General and Administrative Expense [Member] \| Atai ESOP [Member] \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	4,110	5,324	12,947	14,783
General and Administrative Expense [Member] \| Atai HSOP [Member] \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	744	1,124	2,512	3,651
General and Administrative Expense [Member] \| Other Subsidiaries Equity Plan \| Options and Restricted Stock Awards [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share-Based Payment Arrangement, Expense	$ 7	$ 10	$ 33	$ 162

Fair Value Measurement - Summary of Fair Value Measurement Inputs and Valuation Techniques (Detail)	Sep. 30, 2023	Sep. 30, 2023 USD ($)	Dec. 31, 2022
Measurement Input, Price Volatility [Member] \| Fair Value, Inputs, Level 3 [Member] \| Additional Warrants [Member] \| IntelGenx [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrant Liability, Measurement Input	1.05		1
Measurement Input, Price Volatility [Member] \| Neuronasal Inc [Member] \| Fair Value, Inputs, Level 3 [Member] \| Initial Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrant Liability, Measurement Input	1.05	10,500	1
Measurement Input, Share Price [Member] \| Fair Value, Inputs, Level 3 [Member] \| Additional Warrants [Member] \| IntelGenx [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Alternative Investment, Measurement Input	0		0.19
Value Of Underlying [Member] \| Neuronasal Inc [Member] \| Fair Value, Inputs, Level 3 [Member] \| Initial Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Warrant Liability, Measurement Input	0	0.13	0.19
Contingent Consideration Liability Related Parties [Member] \| Measurement Input, Discount Rate [Member] \| Valuation Technique, Discounted Cash Flow [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.149		0.131
Contingent Consideration Liability Related Parties [Member] \| Measurement Input Probability of the Milestone [Member] \| Valuation Technique, Discounted Cash Flow [Member] \| Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.28		0.10
Contingent Consideration Liability Related Parties [Member] \| Measurement Input Probability of the Milestone [Member] \| Valuation Technique, Discounted Cash Flow [Member] \| Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input			0.21
Contingent Consideration Liability Related Parties [Member] \| Measurement Input Discount Rate for Royalties [Member] \| Discounted Cash Flow with SBM [Member] \| Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.142		0.20
Contingent Consideration Liability Related Parties [Member] \| Measurement Input Discount Rate for Royalties [Member] \| Discounted Cash Flow with SBM [Member] \| Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.157		0.211
Contingent Consideration Liability Related Parties [Member] \| Measurement Input Discount Rate for Royalties on Milestones [Member] \| Discounted Cash Flow with SBM [Member] \| Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.142		0.123
Contingent Consideration Liability Related Parties [Member] \| Measurement Input Discount Rate for Royalties on Milestones [Member] \| Discounted Cash Flow with SBM [Member] \| Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.157		0.134
Contingent Consideration Liability Related Parties [Member] \| Probability of Success Rate [Member] \| Discounted Cash Flow with SBM [Member] \| Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.134		0.101
Contingent Consideration Liability Related Parties [Member] \| Probability of Success Rate [Member] \| Discounted Cash Flow with SBM [Member] \| Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration, Liability, Measurement Input	0.28		0.21

Fair Value Measurement

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurement

7. Fair Value Measurement

The following table presents information about the Company’s financial assets and liabilities that are measured at fair value on a recurring basis and indicates the fair value hierarchy of the valuation (in thousands):


	Fair Value Measurements
	As of September 30, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Cash & Money market funds	$	650	$	—	$	—	$	650
Investment in securities at fair value:
U.S. Treasuries		—		85,122		—		85,122
Commercial Paper		—		—		—		—
Corporate Notes/Bonds		—		4,925		—		4,925
U.S. Government Agencies		—		42,456		—		42,456
Other investment at fair value		70,787		—		724		71,511
Convertible notes receivable - related party		—		—		1,519		1,519
	$	71,437	$	132,502	$	2,243	$	206,183
Liabilities:
Contingent consideration liability - related parties	$	—	$	—	$	900	$	900
	$	—	$	—	$	900	$	900


	Fair Value Measurements
	As of December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Cash & Money market funds	$	72,334	$	—	$	—	$	72,334
Investment in securities at fair value:
U.S. Treasuries		—		—		—		—
Commercial Paper		—		5,958		—		5,958
Corporate Notes/Bonds		—		17,719		—		17,719
U.S. Government Agencies		—		58,819		—		58,819
Other investment at fair value		—		—		—		—
	$	72,334	$	82,496	$	—	$	154,830
Liabilities:
Contingent consideration liability - related parties	$	—	$	—	$	953	$	953
	$	—	$	—	$	953	$	953

Investment Securities Portfolio - Fair Value Option

The Company elected the fair value option for the securities in the investment portfolio. The fair value is based on quoted market prices, when available. When a quoted market price is not readily available, the Company uses the market price from its last sale of similar assets. The cash and cash equivalents held by the Company are categorized as Level 1 investments as quoted market prices are readily available for these investments. All other investments in the investment portfolio are categorized as Level 2 investments as inputs utilized to fair value these securities are either directly or indirectly observable, such as the market price from the last sale of similar assets.

The Company purchases investment grade marketable debt securities which are rated by nationally recognized statistical credit rating organizations in accordance with its investment policy. This policy is designed to minimize the Company's exposure to credit losses and to ensure that the adequate liquidity is maintained at all times to meet anticipated cash flow needs.

The unrealized gains and losses on the available-for-sale securities, represented by change in the fair value of the investment portfolio, is reported in other income (expense), net in the condensed consolidated statements of operations. Since the investment in the available-for-sale securities are already measured at fair value, no separate credit losses would be recorded in the condensed consolidated financial statements.

Contingent Consideration Liability—Related Parties—Perception, InnarisBio, and TryptageniX

The contingent consideration liability—related parties in the table above relates to milestone and royalty payments in connection with the acquisition of Perception Neuroscience Holdings, Inc. (“Perception”), InnarisBio and TryptageniX. The fair value of the contingent consideration liability—related parties was determined based on significant inputs not observable in the market, which represent Level 3 measurements within the fair value hierarchy. The fair value of the contingent milestone and royalty liabilities was estimated based on the discounted cash flow valuation technique. The technique considered the following unobservable inputs:

•

the probability and timing of achieving the specified milestones and royalties as of each valuation date,

•

the probability of executing the license agreement,

•

the expected first year of revenue, and

•

market-based discount rates

The fair value of the contingent milestone and royalty liabilities for InnarisBio was estimated to be $0.1 million and $0.1 million as of September 30, 2023 and December 31, 2022, respectively.

The fair value of the Perception contingent milestone and royalty liabilities could change in future periods depending on prospects for the outcome of R-Ketamine milestone meetings with the FDA or other regulatory authorities, and whether the Company realizes a significant increase or decrease in sales upon commercialization. The most significant assumptions in the discounted cash flow valuation technique that impacts the fair value of the milestone contingent consideration are the projected milestone timing and the probability of the milestone being met. Further, significant assumptions in the discounted cash flow that impacts the fair value of the royalty contingent consideration are the projected revenue over ten years, the timing of royalties on commercial revenue, and the probability of success rate for a commercial R-Ketamine product. The valuations as of September 30, 2023 and December 31, 2022, respectively, used inputs that were unobservable inputs with the most significant being the discount rates for royalties on projected commercial revenue and clinical milestones and probability of success estimates over the following ten years, which represent Level 3 measurements within the fair value hierarchy.

The fair value of the contingent milestone and royalty liabilities for Perception was estimated to be $0.6 million and $0.6 million as of September 30, 2023 and December 31, 2022, respectively.

The fair value of the Perception contingent consideration liability - related parties was calculated using the following significant unobservable inputs:


		September 30, 2023	December 31, 2022

Valuation Technique	Significant Unobservable Inputs	Input Range	Input Range
Discounted cash flow	Milestone contingent consideration:
	Discount rate	14.9%	13.1%
	Probability of the milestone	28.0%	10.0% - 21.0%
Discounted cash flow with SBM	Royalty contingent consideration:
	Discount rate for royalties	14.2% - 15.7%	20.0% - 21.1%
	Discount rate for royalties on milestones	14.2% - 15.7%	12.3% - 13.4%
	Probability of success rate	13.4% - 28.0%	10.1% - 21.0%

The fair value of the contingent liability for TryptageniX was estimated to be $0.2 million and $0.2 million as of September 30, 2023, and December 31, 2022, respectively. The contingent liability is comprised of R&D milestone success fee payments and royalties payments. The fair value of the success fee liability was estimated based on the scenario-based method within the income approach. The fair value of the contingent liability for TryptageniX was determined based on significant unobservable inputs, including the discount rate, estimated probabilities of success, and timing of achieving certain clinical milestones. The fair value of the royalties liability was determined to be de minimis as the products are in the early stages of development. The Company will continue to assess the appropriateness of the fair value of the contingent liability as the products continue through development.

IntelGenx Convertible Notes Receivable

The fair value of the IntelGenx 2023 Initial Notes at issuance was estimated based on significant inputs not observable in the market, which represents a Level 3 measurement within the fair value hierarchy. The fair value of the 2023 Initial Notes was estimated as the present value of the debt cash-flows plus the present value of the conversion option while incorporating the probability of IntelGenx shareholder approval. The fair value of the conversion option of the 2023 Initial Notes was estimated using a Binomial Lattice model in a risk-neutral framework in order to account for the Issuer Conversion Rights, which allows for the Issuer's rights to force early conversion. The significant unobservable inputs that are included in the valuation of the 2023 Initial Notes as of September 30, 2023 are (i) discount rate of 51.25% based on an assessment of IntelGenx credit risk and market yields of companies with similar credit risk, (ii) volatility of 105% and (iii) probability of Shareholder Approvals of 85%. The fair value of the 2023 Initial Notes at issuance was estimated at $1.5 million.

IntelGenx Common Stock, Initial Warrants, Additional Unit Warrants and 2023 Initial Warrants

The Company’s investment in IntelGenx consists of Common Stock, Initial Warrants, Additional Unit Warrants, and 2023 Initial Warrants (the Initial Warrants, Additional Unit Warrants and 2023 Initial Warrants are collectively referred to as the “Warrants”). The Company determined that the Warrants do not meet the definition of a derivative instrument under ASC 815. The Company has classified the Common Stock as Level 2 assets and the Warrants as Level 3 assets in the fair value hierarchy. The Company determined that the initial aggregate fair value was equal to the transaction price and recorded the Common Stock at $3.0 million, the Initial Warrants at $1.2 million and the Additional Unit Warrants at $8.2 million on a relative fair value basis resulting in no initial gain or loss recognized in the condensed consolidated statements of operations. The Warrants are measured at fair value on a quarterly basis and any changes in the fair value will be recorded as a component of other income (expense), net in the condensed consolidated statements of operations.

The fair value of Common Stock is estimated by applying a discount for lack of marketability (“DLOM”) of 5.0% as of September 30, 2023 and December 31, 2022. The Company estimated a DLOM in connection with the valuation of the Common Stock to reflect the restrictions associated with the Common Stock. As of September 30, 2023 and December 31, 2022, the only restriction that remains is the unregistered nature of the Common Stock. The fair value of Common Stock, which is included in Other investments held at fair value in the condensed consolidated balance sheets, was zero as of September 30, 2023 and December 31, 2022.

The Initial Warrant asset was recorded at fair value utilizing the Black-Scholes option pricing model. The Black Scholes option pricing model is based on the estimated market value of the underlying common stock at the valuation measurement date, the remaining contractual term of the warrant, risk-free interest rates, expected dividends, and expected volatility of the price of the underlying common stock. The expected volatility is based on a peer group volatility which is a Level 3 input within the fair value hierarchy. The fair value of

the Initial Warrants, which is included in Other investments held at fair value in the condensed consolidated balance sheets, was zero as of September 30, 2023 and December 31, 2022.

The following table summarizes significant unobservable inputs that are included in the valuation of the Initial Warrants as of September 30, 2023 and as of December 31, 2022:


	September 30, 2023			December 31, 2022
Value of Underlying	$	0.13		$	0.19
Expected Volatility		105	%		100	%

The fair value of the Additional Unit Warrants is estimated using a Binomial Lattice in a risk-neutral framework (a special case of the Income Approach). Specifically, the future stock price of the IntelGenx is modeled assuming a Geometric Brownian Motion in a risk-neutral framework. For each modeled future price, the Additional Unit Warrants are calculated based on the contractual terms (incorporating any optimal early exercise), and then discounted at the term-matched risk-free rate. Finally, the value of the Additional Unit Warrants is calculated as the probability-weighted present value over all future modeled payoffs. The fair value of the Additional Unit Warrants, which is included in Other investments held at fair value in the condensed consolidated balance sheets, was zero as of September 30, 2023 and December 31, 2022.

The following table summarizes significant unobservable inputs that are included in the valuation of the Additional Units Warrant as of September 30, 2023 and as of December 31, 2022:


	September 30, 2023			December 31, 2022
Value of Underlying	$	0.13		$	0.19
Expected Volatility		105	%		100	%

The 2023 Initial Warrants asset was recorded at fair value utilizing the Black-Scholes option pricing model. The Black Scholes option pricing model is based on the estimated market value of the underlying common stock at the valuation measurement date, the remaining contractual term of the warrant, risk-free interest rates, expected dividends, and expected volatility of the price of the underlying common stock. The expected volatility is based on a peer group volatility which is a Level 3 input within the fair value hierarchy. The fair value of the 2023 Initial Warrants, which is included in Other investments held at fair value in the condensed consolidated balance sheets, was $0.7 million as of September 30, 2023.

The following table summarizes significant unobservable inputs that are included in the valuation of the 2023 Initial Warrants as of September 30, 2023:


	September 30, 2023
Value of Underlying	$	0.13
Expected Volatility		105	%

The following table provides a roll forward of the aggregate fair values of the Company’s financial instruments described above, for which fair value is determined using Level 3 inputs (in thousands):


	Convertible notes receivable - related party		IntelGenx Warrants(1)		Contingent Consideration Liability - Related Parties
Balance as of December 31, 2022	$	—	$	—	$	953
Initial fair value of instrument		—		—		—
Change in fair value		—		—		(35	)
Extinguishment of liability		—		—		—
Balance as of March 31, 2023	$	—	$	—	$	918
Initial fair value of instrument						—
Change in fair value						(76	)
Extinguishment of liability						—
Balance as of June 30, 2023	$	—	$	—	$	842
Initial fair value of instrument		1,497		724		—
Change in fair value, including interest		22		—		58
Extinguishment of liability		—		—		—
Balance as of September 30, 2023	$	1,519	$	724	$	900

(1) Inclusive of IntelGenx Initial Warrants, Additional Unit Warrants and 2023 Initial Warrants.


	Contingent Consideration Liability - Related Parties
Balance as of December 31, 2021	$	2,483
Initial fair value of instrument		—
Change in fair value		—
Extinguishment of liability		(50	)
Balance as of March 31, 2022	$	2,433
Initial fair value of instrument		—
Change in fair value		(95	)
Extinguishment of liability		—
Balance as of June 30, 2022	$	2,338
Initial fair value of instrument		—
Change in fair value		(430	)
Extinguishment of liability		—
Balance as of September 30, 2022	$	1,908

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Debt (Tables)

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Summary of convertible promissory notes

Convertible promissory notes—related parties, net of discounts and deferred issuance costs, consisted of the following (in thousands):


	September 30, 2023		December 31, 2022
Convertible notes issued in October 2020	$	410	$	415
Total	$	410	$	415

Schedule of Outstanding debt obligations

Outstanding debt obligations are as follows (in thousands):



	September 30, 2023			December 31, 2022
Principal amount	$	15,000		$	15,000
End of the term charge		1,042			1,042
Less: unamortized issuance discount		(222	)		(274	)
Less: unamortized issuance costs		(92	)		(113	)
Less: unamortized end of term charge		(772	)		(952	)
Net carrying amount		14,956			14,702
Less: current maturities		—			—
Long-term debt, net of current maturities and unamortized debt discount and issuance costs	$	14,956		$	14,702

Notes Receivable - Additional Information (Detail) $ / shares in Units, $ in Thousands					3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 30, 2023 USD ($) shares	Sep. 14, 2021 USD ($)	May 11, 2021 USD ($)	Jan. 03, 2020 USD ($) $ / shares	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Sep. 30, 2023 € / shares	Sep. 30, 2023 USD ($) $ / shares shares	Aug. 31, 2023	Dec. 31, 2022 € / shares	Dec. 31, 2022 USD ($) $ / shares	Mar. 08, 2021 USD ($)
Notes Receivable [Line Items]
Secured debt							$ 2,300		$ 2,400
Equity method investment, Shares transaction date							Dec. 31, 2026
Variable Interest Entity, Nonconsolidated, Comparison of Carrying Amount of Assets and Liabilities to Maximum Loss Exposure											$ 10,300			$ 7,200
Issuance of common stock shares par value \| (per share)										€ 0.1	$ 0.12		€ 0.1	$ 0.12
Amended and Restated Loan Agreement [Member]
Notes Receivable [Line Items]
Loan agreement		$ 6,000
Term Loan Receivable [Member]
Notes Receivable [Line Items]
Allowance for credit losses					$ 400	$ 400	$ 400	$ 400
Loans Receivable [Member]
Notes Receivable [Line Items]
Receivables, Maturity description							In May 2021, the Company paid an additional advance of $0.5 million as an additional term loan. In September 2021, the Company entered into an amended and restated loan agreement which, among other things, increased the principal amount of loans available to IntelGenx by $6.0 million, for a total of up to $8.5 million.
IntelGenx Corp [Member]
Notes Receivable [Line Items]
Loans receivable, Fixed interest rate							8.00%
Loans and lease receivable, Outstanding											$ 8,500			$ 5,500
Interest income					200	100	$ 500	300
Issuance of common stock shares par value \| $ / shares											$ 0.185
IntelGenx Corp [Member] \| Additional Term Loan And March Term Loan [Member]
Notes Receivable [Line Items]
Payments to acquire notes receivable			$ 500
IntelGenx Corp [Member] \| March Term Loan Receivable [Member]
Notes Receivable [Line Items]
Receivable, Face amount															$ 2,000
IntelGenx Corp [Member] \| Additional Term Loan Receivable [Member] \| Amended and Restated Loan Agreement [Member]
Notes Receivable [Line Items]
Receivable, Face amount		6,000
IntelGenx Corp [Member] \| Additional Term Loan Receivable [Member] \| Second Tranche [Member] \| Amended and Restated Loan Agreement [Member]
Notes Receivable [Line Items]
Receivable, Face amount		3,000
IntelGenx Corp [Member] \| Term Loan Receivable [Member]
Notes Receivable [Line Items]
Receivable, Face amount		$ 8,500
IntelGenx Corp [Member] \| Term Loan Receivable [Member] \| Minimum [Member] \| Amended and Restated Loan Agreement [Member]
Notes Receivable [Line Items]
Term loan maturity date												Jan. 05, 2024
IntelGenx Corp [Member] \| Term Loan Receivable [Member] \| Maximum [Member] \| Amended and Restated Loan Agreement [Member]
Notes Receivable [Line Items]
Term loan maturity date												Jan. 05, 2025
DemeRx IB, Inc. [Member]
Notes Receivable [Line Items]
Interest income					0	$ 0	0	$ 0
Promissory Note Agreement [Member] \| DemeRx [Member]
Notes Receivable [Line Items]
Debt Instrument, face amount inclusive other payments				$ 1,000
DemeRx Note [Member]
Notes Receivable [Line Items]
Receivables, Maturity terms				5 years
Loans and lease receivable, Outstanding											$ 1,100			$ 1,100
Allowance for credit losses					$ 100		100
DemeRx Note [Member] \| DemeRx IB, Inc. [Member]
Notes Receivable [Line Items]
Issuance of common stock shares par value \| $ / shares				$ 0.0001
DemeRx Note [Member] \| DemeRx [Member]
Notes Receivable [Line Items]
Debt Instrument, face amount inclusive other payments				$ 1,000
Subscription Agreement [Member] \| IntelGenx [Member]
Notes Receivable [Line Items]
Variable Interest Entity, Nonconsolidated, Comparison of Carrying Amount of Assets and Liabilities to Maximum Loss Exposure											$ 1,500
Interest income							$ 100
Subscription Agreement [Member] \| IntelGenx [Member] \| 2023 Warrant [Member]
Notes Receivable [Line Items]
Equity method investment, Shares transaction date							Aug. 31, 2026
Subscription Agreement [Member] \| IntelGenx [Member] \| 2023 Warrant [Member] \| Warrant [Member]
Notes Receivable [Line Items]
Common share purchase warrants \| shares											5,405
Exercise price, warrants \| $ / shares											$ 0.26
Subscription Agreement [Member] \| IntelGenx [Member] \| Convertible Notes Receivable [Member]
Notes Receivable [Line Items]
Investment measured at fair value as per fair value option											$ 1,000
Investment Interest Rate											12.00%
Debt conversion price \| $ / shares											$ 0.185
Subscription Agreement [Member] \| IntelGenx [Member] \| Convertible debenture [Member]
Notes Receivable [Line Items]
Secured debt	$ 2,200
Convertible debenture units \| shares	2,220

Leases (Additional Information) (Details)	Sep. 30, 2023
Leases [Abstract]
Operating Lease, Weighted Average Discount Rate, Percent	12.60%
Operating Lease, Weighted Average Remaining Lease Term	4 years 4 months 24 days

Notes Receivable

9 Months Ended

Sep. 30, 2023

Receivables [Abstract]

Notes Receivable

6. Notes Receivable

Convertible notes receivable - related party

IntelGenx Convertible Notes

On August 30, 2023, the Company and IntelGenx entered into the Subscription Agreement (as defined in Note 5), under which the Company paid IntelGenx $2.2 million for 2,220 convertible debenture units (the "Initial Units"), with each convertible debenture unit consisting of:

(i) $1,000 principal amount convertible promissory notes (the “2023 Initial Notes”) bearing interest at a rate of 12.0% per annum, payable quarterly in arrears beginning September 30, 2023, with all principal and accrued interest convertible into common shares of IntelGenx, at any time from the date that is six months following their issuance up to and including August 31, 2026 at a conversion price equal to $0.185 per common share; and

(ii) 5,405 common share purchase warrants of IntelGenx, each exercisable at an exercise price of $0.26 per common share for a period of three years following their issuance.

There are certain conversion limits in connection with the 2023 Initial Notes as it relates to the 2023 Initial Notes and the other IntelGenx instruments held by the Company. See Note 5 for further discussion of these conversion limits.

The Company is eligible to elect the fair value option to account for its investment in the 2023 Initial Notes and believes that the fair value option better reflects the underlying economics of the 2023 Initial Notes. At September 30, 2023, the Company recorded the $1.5 million fair value of the 2023 Initial Notes in Convertible notes receivable - related party on the condensed consolidated balance sheets. The 2023 Initial Notes will be subsequently remeasured at each reporting date until settled or converted. The Company will recognize accrued interest and subsequent changes in fair value of the 2023 Initial Notes in Changes in fair value of convertible notes receivable - related party in its consolidated statements of operations. During the three months ended September 30, 2023, the Company recorded a $0.1 million change in fair value of Convertible notes receivable - related party for the interest accrued on the 2023 Initial Notes.

Long Term Notes Receivable – Related Parties, net

IntelGenx Term Loan

In March 2021, the Company and IntelGenx entered into a loan agreement (the "Original Loan Agreement") under which the Company provided a loan to IntelGenx for an aggregate principal amount of $2.0 million. In May 2021, the Company paid an additional advance of $0.5 million as an additional term loan. In September 2021, the Company entered into an amended and restated loan agreement which, among other things, increased the principal amount of loans available to IntelGenx by $6.0 million, for a total of up to $8.5 million. The additional $6.0 million loan amount was funded via two separate $3.0 million tranches. The first $3.0 million tranche was funded in January 2022 and the second $3.0 million tranche was funded in January 2023. The loan bears an annualized interest rate of 8% and such interest is accrued daily.

On August 31, 2023, the Company and IntelGenx entered into the first amendment to the amended and restated loan agreement (the "First Amendment") which, among other things, extended the maturity date from January 5, 2024 to January 5, 2025 and granted the Company additional security over any non-licensed intellectual property owned or controlled by IntelGenx. The Company determined that this modification does not have a material impact on the amortized cost basis of the IntelGenx Term Loan (as defined below).

Effective September 30, 2023, the Company and IntelGenx entered into a second amendment to the amended and restated loan agreement (the "Second Amendment", and together with the Original Loan Agreement and the First Amendment, the "IntelGenx Term Loan") which, among other things, entitles the Company to convert any portion of the outstanding and unpaid principal and accrued interest into common shares of IntelGenx at a conversion price per share of $0.185 (the "Conversion Feature").

In November 2023, the Autorité des marchés financiers informed IntelGenx that it considers the Second Amendment to be subject to the minority vote prescribed by applicable Canadian securities regulations. Therefore, the IntelGenx shareholder approval is required for the Company to be able to exercise its rights to the Conversion Feature available under the Second Amendment, and the Company will not account for the Second Amendment until required shareholder approval is obtained. See Note 5 for additional information about the required shareholder approvals.

Pursuant to the terms of the IntelGenx Term Loan, upon the occurrence of an event of default, the Company may accelerate the IntelGenx Term Loan and declare the principal and any accrued and unpaid interests of the IntelGenx Term Loan to be immediately due and payable. In addition, IntelGenx may prepay the IntelGenx Term Loan in whole or in part at any time without premium or penalty. Any prepayment

of the principal shall be accompanied by a payment of interest accrued to date thereon. The Company concluded that these embedded features do not meet the criteria to be bifurcated and separately accounted for as derivatives.

As of September 30, 2023, the IntelGenx Term Loan was recorded in Long term notes receivable – related parties, net on the Company's condensed consolidated balance sheets, which includes the principal balance of the IntelGenx Term Loan, accrued interest and allowance for credit losses. On January 1, 2023, the Company adopted ASU 2016-13 Financial Instruments — Credit Losses and applied a modified-retrospective transition approach through a cumulative-effect adjustment to retained earnings of $0.4 million, representing the allowance for credit losses for the IntelGenx Term Loan. During the three and nine months ended September 30, 2023 and 2022, the Company recorded an immaterial increase to the allowance. In its assessment of the IntelGenx Term Loan and related amendments at September 30, 2023, the Company determined that IntelGenx was experiencing indicators of financial difficulties. However, considering the underlying collateral and other settlement terms available, the Company does not deem it probable that it will not collect the IntelGenx Term Loan balance from IntelGenx.

For the three months ended September 30, 2023 and 2022, the Company recognized $0.2 million and $0.1 million of interest income, respectively, associated with the IntelGenx Term Loan. For the nine months ended September 30, 2023 and 2022, the Company recognized $0.5 million and $0.3 million of interest income, respectively, associated with the IntelGenx Term Loan. As of September 30, 2023 and December 31, 2022, the IntelGenx Term Loan has an outstanding principal balance of $8.5 million and $5.5 million, respectively.

DemeRx Promissory Note

In January 2020, DemeRx IB loaned to DemeRx Inc. $1.0 million pursuant to the terms of a Promissory Note (the "DemeRx Note"). Pursuant to the terms of the DemeRx Note, the aggregate principal amount of $1.0 million together with all accrued and unpaid interest and any other amounts payable are due to be paid on the date that is the earlier of (i) 5 years from the initial closing and (ii) the closing of an initial public offering or a deemed liquidation event of DemeRx IB (the “DemeRx Maturity Date”). Pursuant to the terms of the DemeRx Note, DemeRx Inc. may, in its sole discretion pay any amount due under the DemeRx Note, in cash or through cancellation shares of common stock of DemeRx IB, par value $0.0001 per share, of the fair market value of such shares.

The Company recorded the DemeRx Note at cost which included the principal balance of the DemeRx Note and accrued interest in Long term notes receivable - related parties, net on its condensed consolidated balance sheets. On January 1, 2023, the Company adopted ASU 2016-13 Financial Instruments — Credit Losses and applied a modified-retrospective transition approach through a cumulative-effect adjustment to retained earnings of $0.1 million, representing the allowance for credit losses for the DemeRx Note. During the three and nine months ended September 30, 2023, the Company recorded an immaterial increase to the allowance.

For the three and nine months ended September 30, 2023 and 2022, the Company did not recognize any interest income associated with the DemeRx Note. As of September 30, 2023, and December 31, 2022, respectively, the DemeRx Note had an outstanding balance of $1.1 million and $1.1 million, respectively.

Fair Value Measurement - Summary of Fair Value Measurement on Recurring Basis, Unobservable Input Reconciliation (Detail) - USD ($)
$ in Thousands

3 Months Ended

Sep. 30, 2023

Jun. 30, 2023

Mar. 31, 2023

Sep. 30, 2022

Jun. 30, 2022

Mar. 31, 2022

Convertible notes receivable - related party [Member]

Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Beginning Balance

$ 0

Beginning Balance

$ 0

Initial fair value of instrument

1,497

Change in fair value

Extinguishment of liability

Ending Balance

1,519

IntelGenx Warrants [Member]

Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Beginning Balance

^[1]

Beginning Balance

^[1]

Initial fair value of instrument

^[1]

724

Change in fair value

^[1]

Extinguishment of liability

^[1]

Ending Balance

^[1]

724

Contingent Consideration Liability Related Parties [Member]

Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]

Beginning Balance

953

$ 2,483

Beginning Balance

842

918

$ 2,338

$ 2,433

Initial fair value of instrument

Change in fair value

(76)

(35)

(430)

(95)

Extinguishment of liability

(50)

Ending Balance

$ 900

$ 842

$ 918

$ 1,908

$ 2,338

$ 2,433

[1]	Inclusive of IntelGenx Initial Warrants, Additional Unit Warrants and 2023 Initial Warrants

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net income (loss)	$ (24,753)	$ (110,768)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	218	115
Change in right-of-use asset	297	0
Amortization of debt discount	272	0
Change in fair value of contingent consideration liability - related parties	(53)	(525)
Change in fair value of securities carried at fair value	(3,322)	981
Change in fair value of warrant liability	0	(53)
Change in fair value of other investments held at fair value	(69,014)	0
Change in fair value of convertible notes receivable - related party	(22)	0
Losses from investments in equity method investees	3,199	14,680
In-process research and development expense	0	357
Stock-based compensation expense	25,677	30,235
Unrealized foreign exchange (gains) losses	555	(9,536)
Other	(42)	(158)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	6,716	(1,778)
Accounts payable	3,096	(2,436)
Accrued liabilities	(4,980)	4,924
Net cash used in operating activities	(62,156)	(73,962)
Cash flows from investing activities
Purchases of property and equipment	(251)	(631)
Capitalized internal-use software development costs	(322)	(170)
Cash paid for other investments held at fair value	(724)	0
Cash paid for convertible notes receivable - related party	(1,497)	0
Cash paid for additional interest in variable interest entity	(480)	0
Cash paid for securities carried at fair value	(177,047)	(256,554)
Proceeds from sale and maturities of securities carried at fair value	130,363	94,055
Proceeds from sale of other investments	486	0
Cash paid for other investments	0	(600)
Loans to related parties	(3,000)	(3,000)
Net cash used in investing activities	(52,472)	(166,900)
Cash flows from financing activities
Proceeds from issuance of shares upon exercise of stock options	206	2,171
Proceeds from issuance of subsidiary preferred shares	0	600
Proceeds from conversion of convertible notes to common stock	0	4,635
Proceeds from debt financings	0	15,000
Financing costs paid	(100)	(699)
Net cash provided by financing activities	106	21,707
Effect of foreign exchange rate changes on cash	401	(572)
Net increase (decrease) in cash and cash equivalents	(114,121)	(219,727)
Cash and cash equivalents – beginning of the period	190,613	362,266
Cash and cash equivalents – end of the period	76,492	142,539
Supplemental disclosures:
Cash paid for taxes	(1,475)	0
Cash paid for interest	(1,428)	0
Supplemental disclosures of non cash investing and financing information:
Right of use asset obtained in exchange for operating lease liabilities	1,356	487
Issuance of subsidiary shares to non-controlling interests in connection with Columbia stock purchase agreement	0	357
Deferred financing costs included in accounts payable and accrued expenses	$ 0	$ 1,046

Leases

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Leases

10. Leases

In February 2016, the FASB issued ASU 2016-02, “Leases” Topic 842, which amends the guidance in former ASC Topic 840, Leases.

Operating lease Right-of-Use (“ROU”) assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at the commencement date. The operating lease ROU asset also includes lease payments made, lease incentives, and initial direct costs incurred, if any.

The discount rate implicit within the Company’s leases is generally not determinable and therefore the Company determines the discount rate based on its incremental borrowing rate, which is based on the information available at commencement date. As of September 30, 2023, the operating lease liabilities reflect a weighted-average discount rate of 12.6%.

Operating Leases

The Company leases certain office space under long-term operating leases that expire at various dates through 2028. The Company generally has options to renew lease terms on its facilities, which may be exercised at the Company's sole discretion. The Company evaluates renewal and termination options at the lease commencement date to determine if it is reasonably certain to exercise the option and has concluded on all operating leases that is it not reasonably certain that any options will be exercised. The weighted-average remaining lease term for the Company’s operating leases as of September 30, 2023 was 4.4 years.

ROU assets and lease liabilities related to the Company’s operating leases are as follows (in thousands):


	Balance Sheet Classification	September 30, 2023		December 31, 2022
Right-of-use assets	Operating lease right-of-use asset, net	$	1,258	$	226
Current lease liabilities	Current portion of lease liability		292		180
Non-current lease liabilities	Non-current portion of lease liability		1,011		44

Expenses related to leases is recorded on a straight-line basis over the lease term. The following table summarizes lease costs by component for the three and nine months ended September 30, 2023 and 2022 (in thousands):


Lease Cost Components	Statement of Operations Classification	Three months ended September 30, 2023		Three months ended September 30, 2022		Nine months ended September 30, 2023		Nine months ended September 30, 2022
Operating lease cost	Operating expenses: General and administrative	$	120	$	73	$	431	$	197
Short-term lease cost	Operating expenses: General and administrative		102		106		384		328
Total lease cost		$	222	$	179	$	815	$	525

Future minimum commitments under all non-cancelable operating leases are as follows (in thousands):


Year Ended
2023 (excluding nine months ended September 30, 2023)	$	122
2024		399
2025		355
2026		355
2027		355
2028		118
Total lease payments		1,704
Less: Imputed interest		(401	)
Present value of lease liabilities	$	1,303

Supplemental cash flow information related to the Company’s operating leases for the nine months ended September 30, 2023 and 2022 are as follows (in thousands):



	Nine months ended September 30, 2023		Nine months ended September 30, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	304	$	193
Right-of-use assets obtained in exchange for new operating lease liabilities		1,356		487

Equity Method Investments and Other Investments (Tables)

9 Months Ended

Sep. 30, 2023

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments

As of September 30, 2023 and December 31, 2022, the Company accounted for the following investments in the investee’s common stock under the equity method (amounts in thousands):


		As of September 30, 2023				As of December 31, 2022
	Date First	Common Stock		Carrying		Common Stock		Carrying
Investee	Acquired	Ownership %		Value		Ownership %		Value
Innoplexus A.G.	August 2018	35.0%		$	—	35.0%		$	—
COMPASS Pathways plc	December 2018	15.5%	(1)		—	22.4%			—
GABA Therapeutics, Inc	November 2020	7.5%	(2)		—	7.5%	(2)		—
Total				$	—			$	—

(2) The Company is deemed to have significant influence over this entity through its total ownership interest in the entity’s equity, including the Company’s investment in the respective entity’s preferred stock, described below in Other Investments. The Company’s total ownership interest, considering both preferred and common stock is 54.7%.

Schedule of Other Investments Held at Fair Value

As of September 30, 2023 and December 31, 2022, the carrying values of Other investments held at fair value, were as follows (in thousands):


	September 30, 2023			December 31, 2022
COMPASS Pathways plc	$	70,787	(1)	$	—
IntelGenx Technologies Corp.		724			—
Total	$	71,511		$	—

(1) The Company accounted for its investment in COMPASS Pathways plc under the equity method until August 18, 2023, the closing date of COMPASS Pathways plc's dilutive financing round. Following the August 18, 2023 financing, the Company evaluated its ability to continue to exercise significant influence over its investment and determined that it no longer had significant influence and as such will account for its COMPASS investment under ASC 321 at fair value.

Investment

As of September 30, 2023 and December 31, 2022, the carrying values of other investments, which consisted of investments in the investee’s preferred stock and common stock not in the scope of ASC 323 were as follows (in thousands):


	September 30,		December 31,
	2023		2022
GABA Therapeutics, Inc.	$	2,635	$	5,387
DemeRx NB, Inc.		1,024		1,024
Juvenescence Limited		—		344
Total	$	3,659	$	6,755

Schedule Of Equity Method Investment Summarized Balance Sheet

The following is a summary of financial data for investments accounted for under the equity method of accounting (in thousands). The Company accounted for its COMPASS investment under equity method of accounting through August 18, 2023 (see further details above).

Summarized financial information is presented as of September 30, 2023 as this information is not readily available as of August 18, 2023 and the Company has no practical way to estimate otherwise.

Balance Sheets


	September 30, 2023
	COMPASS		GABA
Current assets	$	284,806	$	1,654
Non-current assets		14,227		—
Total assets	$	299,033	$	1,654

Current liabilities	$	15,350	$	1,519
Non-current liabilities		30,428		—
Total liabilities	$	45,778	$	1,519


	December 31, 2022
	COMPASS		GABA
Current assets	$	191,651	$	3,933
Non-current assets		5,643		—
Total assets	$	197,294	$	3,933

Current liabilities	$	15,596	$	1,542
Non-current liabilities		418		—
Total liabilities	$	16,014	$	1,542

Shedule Of Equity Method Investment Summarized Statement Of Operations

Statements of operations


	Three Months Ended September 30, 2023
	COMPASS			GABA
Revenue	$	—		$	—
Loss from continuing operations	$	(34,062	)	$	(238	)
Net loss	$	(33,389	)	$	(238	)

	Three Months Ended September 30, 2022
	COMPASS			GABA
Revenue	$	—		$	—
Loss from continuing operations	$	(25,536	)	$	(2,060	)
Net loss	$	(18,371	)	$	(2,060	)


	Nine Months Ended September 30, 2023
	COMPASS			GABA
Revenue	$	—		$	—
Loss from continuing operations	$	(98,514	)	$	(3,199	)
Net loss	$	(85,932	)	$	(3,199	)

	Nine Months Ended September 30, 2022
	COMPASS			GABA
Revenue	$	—		$	—
Loss from continuing operations	$	(78,212	)	$	(5,630	)
Net loss	$	(60,579	)	$	(5,630	)

Subsequent Events - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	9 Months Ended
	Oct. 31, 2023	Sep. 30, 2023	Dec. 31, 2022
Deposit paid		$ 2,564	$ 4,626
DemeRx IB, Inc. [Member]
Paid an initial cash consideration		$ 8,000
DemeRx IB, Inc. [Member] \| Subsequent Event [Member]
Issued and outstanding share capital percentage	100.00%

Variable Interest Entities and a Voting Interest Entity

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Variable Interest Entities and a Voting Interest Entity

4. Variable Interest Entities

Consolidated VIEs

At each reporting period, the Company reassesses whether it remains the primary beneficiary for Variable Interest Entities (“VIEs”) consolidated under the VIE model.

The entities consolidated by the Company are comprised of wholly and partially owned entities for which the Company is the primary beneficiary under the VIE model as the Company has (i) the power to direct the activities that most significantly impact the VIE’s economic performance and (ii) the obligation to absorb losses that could potentially be significant to the VIE, or the right to receive benefits from the VIE that could potentially be significant to the VIE. The results of operations of the consolidated entities are included within the Company’s condensed consolidated financial statements from the date of acquisition to September 30, 2023.

As of September 30, 2023 and December 31, 2022, the Company has accounted for the following consolidated investments as VIEs, excluding the wholly owned subsidiaries:


Consolidated Entities	Relationship as of September 30, 2023	Relationship as of December 31, 2022	Date Control Obtained	Ownership % September 30, 2023	Ownership % December 31, 2022
Perception Neuroscience Holdings, Inc.	Controlled VIE	Controlled VIE	November 2018	59.2%	58.9%
Kures, Inc.	Controlled VIE	Controlled VIE	August 2019	64.5%	64.5%
EntheogeniX Biosciences, Inc.	Wholly Owned Subsidiary	Controlled VIE	November 2019	100.0%	80.0%
DemeRx IB, Inc.	Controlled VIE	Controlled VIE	December 2019	59.5%	59.5%
Recognify Life Sciences, Inc.	Controlled VIE	Controlled VIE	November 2020	51.9%	51.9%
PsyProtix, Inc.	Controlled VIE	Controlled VIE	February 2021	75.0%	75.0%
Psyber, Inc.	Controlled VIE	Controlled VIE	February 2021	75.0%	75.0%
InnarisBio, Inc.	Controlled VIE	Controlled VIE	March 2021	82.0%	82.0%
TryptageniX Inc.	Controlled VIE	Controlled VIE	December 2021	65.0%	65.0%

As of September 30, 2023 and December 31, 2022, the assets of the consolidated VIEs can only be used to settle the obligations of the respective VIEs. The liabilities of the consolidated VIEs are obligations of the respective VIEs and their creditors have no recourse to the general credit or assets of atai.

EntheogeniX Biosciences, Inc.

In November 2019, the Company entered into a series of agreements with Cyclica Inc. ("Cyclica") to form EntheogeniX Biosciences, Inc. ("EntheogeniX"), a company dedicated to developing the next generation of innovative mental health drugs employing an AI-enabled computational biophysics platform designed to optimize and accelerate drug discovery. Based on the Company's assessment of the transaction at the time of acquisition, the Company concluded that EntheogeniX was not a business and accounted for the Company's investment as an initial consolidation of a VIE that is not a business under ASC 810.

In February 2022 and September 2022, pursuant to the business plan as contemplated in the Stockholders Agreement and Subscription for Shares pursuant to the Contribution and Subscription Agreement, atai purchased additional shares of Class A common stock for an aggregate purchase price of $2.2 million. As a result of anti-dilution protection available to Cyclica, the Company's ownership percentage in EntheogeniX did not change due to its purchase of the Class A common stock.

In March 2023, pursuant to the business plan as contemplated in the Stockholders Agreement and Subscription for Shares pursuant to the Contribution and Subscription Agreement, atai purchased additional shares of Class A common stock for an aggregate purchase price of $1.0 million. As a result of anti-dilution protection available to Cyclica, the Company's ownership percentage in EntheogeniX did not change due to its purchase of the Class A common stock.

On September 1, 2023, the Company and Cyclica entered into a Stock Transfer Agreement which resulted in the Company's acquisition of Cyclica’s 20% equity ownership of EntheogeniX (the “Stock Transfer”). As a result of the "Stock Transfer", the Company owned 100% of the outstanding common stock of EntheogeniX and EntheogeniX became a wholly owned subsidiary of the Company. The Stock Transfer was accounted for as an equity transaction with no gain or loss recognized. The difference between the carrying amount of Cyclica's non-controlling interest and the cash paid for the acquisition of the additional equity interest was recorded as a reduction in additional paid-in capital in the condensed consolidated balance sheets and condensed consolidated statements of stockholders' equity.

As of September 30, 2023 the Company owned 100% of the outstanding common stock of EntheogeniX. As of December 31, 2022, the Company owned 80% of the outstanding common stock of EntheogeniX.

The following table presents the assets and liabilities (excluding intercompany balances that were eliminated in consolidation) for all VIEs as of September 30, 2023 (in thousands):


	Perception		Kures		EntheogeniX		DemeRx IB		Recognify		PsyProtix		Psyber		InnarisBio		TryptageniX
Assets:
Current assets:
Cash	$	776	$	404	$	1,845	$	9,878	$	2,846	$	468	$	442	$	819	$	1
Accounts receivable		84		—		—		—		—		—		—		—		—
Prepaid expenses and other current assets		275		48		203		2		745		—		—		156		2,675
Total current assets		1,135		452		2,048		9,880		3,591		468		442		974		2,676
Long term notes receivable		—		—		—		1,062		—		95		—		—		—
Other assets		—		—		—		—		—		—		721		—		—
Total assets	$	1,135	$	452	$	2,048	$	10,942	$	3,591	$	563	$	1,163	$	974	$	2,676
Liabilities:
Current liabilities:
Accounts payable	$	421	$	301	$	252	$	335	$	335	$	—	$	—	$	—	$	—
Accrued liabilities		886		14		114		206		1,173		19		94		315		15
Other current liabilities		—		—		—		—		—		—		—		—		—
Total current liabilities		1,308		314		365		541		1,508		19		94		315		15
Total liabilities	$	1,308	$	314	$	365	$	541	$	1,508	$	19	$	94	$	315	$	15

The following table presents the assets and liabilities (excluding intercompany balances that were eliminated in consolidation) for all consolidated VIEs as of December 31, 2022 (in thousands):


	Perception		Kures		EntheogeniX		DemeRx IB		Recognify		PsyProtix		Psyber		InnarisBio		TryptageniX
Assets:
Current assets:
Cash	$	8,703	$	220	$	467	$	12,251	$	7,526	$	1	$	683	$	719	$	513
Accounts receivable		197		—		—		—		—		—		—		—		—
Prepaid expenses and other current assets		466		174		91		21		1,742		66		—		13		2,850
Total current assets		9,366		394		558		12,272		9,268		67		683		732		3,363
Long term notes receivable		—		—		—		1,075		—		109		—		—		—
Other assets		—		—		—		—		—		—		353		—		—
Total assets	$	9,366	$	394	$	558	$	13,347	$	9,268	$	176	$	1,036	$	732	$	3,363
Liabilities:
Current liabilities:
Accounts payable	$	661	$	25	$	124	$	332	$	381	$	33	$	10	$	3	$	—
Accrued liabilities		1,738		266		121		671		596		46		37		158		154
Other current liabilities		121		2		—		133		2		1		1		1		—
Total current liabilities		2,520		293		245		1,136		979		80		48		162		154
Total liabilities	$	2,520	$	293	$	245	$	1,136	$	979	$	80	$	48	$	162	$	154

Noncontrolling Interests

The Company recognizes noncontrolling interests related to its consolidated VIEs and provides a roll forward of the noncontrolling interests balance, as follows (in thousands):


	Perception			Kures			Recognify			Total
Balance as of December 31, 2022	$	1,731		$	451		$	2,844		$	5,026
Net loss attributable to noncontrolling interests - common		—			—			—			—
Net loss attributable to noncontrolling interests - preferred		(700	)		(93	)		(426	)		(1,219	)
Comprehensive loss attributable to noncontrolling interests		6			2			—			8
Balance as of March 31, 2023	$	1,037		$	360		$	2,418		$	3,815
Net loss attributable to noncontrolling interests - common		—			—			—			—
Net loss attributable to noncontrolling interests - preferred		(266	)		(32	)		(431	)		(729	)
Comprehensive loss attributable to noncontrolling interests		(1	)		2			—			1
Balance as of June 30, 2023	$	770		$	330		$	1,987		$	3,087
Net loss attributable to noncontrolling interests - common		—			—			—			—
Net income (loss) attributable to noncontrolling interests - preferred		(320	)		65			(618	)		(873	)
Comprehensive loss attributable to noncontrolling interests		17			5			—			22
Balance as of September 30, 2023	$	467		$	400		$	1,369		$	2,236


	Perception			Kures			Recognify			Total
Balance as of December 31, 2021	$	5,232		$	—		$	3,819		$	9,051
Net loss attributable to noncontrolling interests - preferred		(571	)		—			(118	)		(689	)
Comprehensive loss attributable to noncontrolling interests		(11	)		—			—			(11	)
Balance as of March 31, 2022	$	4,650		$	—		$	3,701		$	8,351
Issuance of noncontrolling interests		—			957			—			957
Net loss attributable to noncontrolling interests - preferred		(800	)		—			(91	)		(891	)
Comprehensive loss attributable to noncontrolling interests		30			—			—			30
Balance as of June 30, 2022	$	3,880		$	957		$	3,610		$	8,447
Issuance of noncontrolling interests		—			—			—			—
Net loss attributable to noncontrolling interests - preferred		(977	)		(149	)		(330	)		(1,456	)
Net loss attributable to noncontrolling interests - common		—			(358	)		—			(358	)
Comprehensive loss attributable to noncontrolling interests		47			1			—			48
Balance as of September 30, 2022	$	2,950		$	451		$	3,280		$	6,681

Non-consolidated VIEs

The Company evaluated the nature of its investments in Innoplexus AG (“Innoplexus”), DemeRx NB, Inc. (“DemeRx NB”) and IntelGenx and determined that the investments are VIEs as of the date of the Company’s initial investment through September 30, 2023. The Company is not the primary beneficiary of Innoplexus, DemeRx NB or IntelGenx as it did not have the power to direct the activities that most significantly impact the investments’ economic performance and therefore concluded that it did not have a controlling financial interest in each of Innoplexus, DemeRx NB or IntelGenx that would require consolidation as of September 30, 2023 and December 31, 2022.

The Company will reevaluate if the investments meet the definition of a VIE upon the occurrence of specific reconsideration events. The Company accounted for these investments under either the equity method, fair value option, or the measurement alternative included within ASC 321 (See Note 5). As of September 30, 2023, the Company’s maximum exposure for its non-consolidated VIEs was $3.6 million relating to the carrying values in Other investments and $10.3 million relating to the carrying value in Long term notes receivable – related parties, net in the condensed consolidated balance sheets.

As of December 31, 2022, the Company’s maximum exposure for its non-consolidated VIEs was $6.8 million relating to the carrying values in its Other investments and $7.2 million relating to the carrying value in Long term notes receivable—related parties, net in the condensed consolidated balance sheets.

Prepaid Expenses and Other Current Assets - Summary of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid insurance	$ 2,131	$ 2,034
Prepaid research and development related expenses	2,564	4,626
Tax receivables	1,497	5,631
Other	638	1,745
Total	$ 6,831	$ 14,036

Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital	Share Subscriptions Receivable	Accumulated Other Comprehensive Loss	Accumulated Deficit	Total Stockholders' Equity Attributable to ATAI Life Sciences N.V. Stockholders	Noncontrolling Interests
Beginning Balance at Dec. 31, 2021	$ 385,959	$ 18,002	$ 725,045		$ (8,336)	$ (357,803)	$ 376,908	$ 9,051
Beginning Balance, Shares at Dec. 31, 2021		160,677,001
Issuance of shares upon exercise of stock options, shares		42,827
Issuance of shares upon exercise of stock options	132	$ 5	127		0	0	132	0
Stock-based compensation expense	10,208	0	10,208		0	0	10,208	0
Foreign currency translation adjustment, net of tax	(4,384)	0	0		(4,373)	0	(4,373)	(11)
Net income (loss)	(37,558)	$ 0	0		0	(36,869)	(36,869)	(689)
Ending Balance, Shares at Mar. 31, 2022		160,719,828
Ending Balance at Mar. 31, 2022	354,357	$ 18,007	735,380		(12,709)	(394,672)	346,006	8,351
Issuance of shares upon exercise of stock options, shares		47,957
Issuance of shares upon exercise of stock options	118	$ 6	112				118
Issuance of noncontrolling interest	957
Conversion of convertible notes to common stock	1,140	$ 101	1,039				1,140
Conversion of convertible notes to common stock, Shares		960,000
Issuance of subsidiary preferred shares	600							600
Issuance of subsidiary common shares	357							357
Stock-based compensation expense	9,511		9,511				9,511
Foreign currency translation adjustment, net of tax	(8,452)				(8,482)		(8,482)	30
Net income (loss)	(37,509)					(36,618)	(36,618)	(891)
Ending Balance, Shares at Jun. 30, 2022		161,727,785
Ending Balance at Jun. 30, 2022	320,122	$ 18,114	746,042		(21,191)	(431,290)	311,675	8,447
Issuance of shares upon exercise of stock options, shares		787,522
Issuance of shares upon exercise of stock options	1,921	$ 94	1,827				1,921
Issuance of noncontrolling interest	0
Conversion of convertible notes to common stock	3,773	$ 346	3,427				3,773
Conversion of convertible notes to common stock, Shares		3,360,000
Stock-based compensation expense	10,515		10,515				10,515
Foreign currency translation adjustment, net of tax	(4,549)				(4,597)		(4,597)	48
Net income (loss)	(35,701)					(33,887)	(33,887)	(1,814)
Ending Balance, Shares at Sep. 30, 2022		165,875,307
Ending Balance at Sep. 30, 2022	296,081	$ 18,554	761,811		(25,788)	(465,177)	289,400	6,681
Beginning Balance at Dec. 31, 2022	265,766	$ 18,562	774,092	$ (24)	(21,702)	(510,188)	260,740	5,026
Beginning Balance, Shares at Dec. 31, 2022		165,935,914
Settlement of issuance of shares upon exercise of stock options	24			24			24
Issuance of shares upon exercise of stock options, shares		74,562
Issuance of shares upon exercise of stock options	181	$ 9	172		0	0	181	0
Adjustment to accumulated deficit (pursuant to adoption of ASU 2016-13)	(526)					(526)	(526)
Stock-based compensation expense	8,662	0	8,662		0	0	8,662	0
Foreign currency translation adjustment, net of tax	887	0	0		879	0	879	8
Net income (loss)	(34,354)	$ 0	0		0	(33,135)	(33,135)	(1,219)
Ending Balance, Shares at Mar. 31, 2023		166,010,476
Ending Balance at Mar. 31, 2023	240,640	$ 18,571	782,926		(20,823)	(543,849)	236,825	3,815
Beginning Balance at Dec. 31, 2022	265,766	$ 18,562	774,092	$ (24)	(21,702)	(510,188)	260,740	5,026
Beginning Balance, Shares at Dec. 31, 2022		165,935,914
Ending Balance, Shares at Sep. 30, 2023		166,010,476
Ending Balance at Sep. 30, 2023	268,512	$ 18,571	799,461		(19,109)	(532,647)	266,276	2,236
Beginning Balance at Mar. 31, 2023	240,640	$ 18,571	782,926		(20,823)	(543,849)	236,825	3,815
Beginning Balance, Shares at Mar. 31, 2023		166,010,476
Stock-based compensation expense	8,762		8,762				8,762
Foreign currency translation adjustment, net of tax	6				5		5	1
Net income (loss)	(33,771)					(33,042)	(33,042)	(729)
Ending Balance, Shares at Jun. 30, 2023		166,010,476
Ending Balance at Jun. 30, 2023	215,637	$ 18,571	791,688		(20,818)	(576,891)	212,550	3,087
Stock-based compensation expense	8,253		8,253				8,253
Foreign currency translation adjustment, net of tax	1,731				1,709		1,709	22
Adjustment to additional paid in capital upon acquiring additional interest in variable interest entity	(480)		(480)				(480)
Net income (loss)	43,371					44,244	44,244	(873)
Ending Balance, Shares at Sep. 30, 2023		166,010,476
Ending Balance at Sep. 30, 2023	$ 268,512	$ 18,571	$ 799,461		$ (19,109)	$ (532,647)	$ 266,276	$ 2,236

Net Income (Loss) Per Share - Additional Information (Detail) - Common Stock [Member] - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Sep. 30, 2023
Net Income (Loss) Per Share [Line Items]
Conversion of convertible notes to common stock, Shares	3,360,000	960,000
2018 Convertible Promissory Notes - Related Parties (note 11)
Net Income (Loss) Per Share [Line Items]
Conversion of convertible notes to common stock, Shares			387,614
Common stock, Conversion basis			one-for-sixteen

License Agreements

9 Months Ended

Sep. 30, 2023

License Agreements [Abstract]

License Agreements

17. License Agreements

Otsuka License and Collaboration Agreement

In March 2021, Perception entered into a license and collaboration agreement (the “Otsuka Agreement”) with Otsuka under which Perception granted exclusive rights to Otsuka to develop and commercialize products containing arketamine, known as PCN-101 in Japan for the treatment of any depression, including treatment-resistant depression, or major depressive disorder or any of their related symptoms or conditions at its own cost and expense. Perception retained all rights to PCN-101 outside of Japan.

With the execution of the Otsuka Agreement, Perception received an upfront, non-refundable payment of $20.0 million. Perception is also entitled to receive aggregate payments of up to $35.0 million if certain development and regulatory milestones are achieved for the current or a new intravenous formulation of a product and up to $66.0 million in commercial milestones upon the achievement of certain commercial sales thresholds. Otsuka is obligated to pay Perception a tiered, double-digit royalty on net sales of products containing PCN-101 in Japan, subject to reduction in certain circumstances. More information for this license can be found in Note 16 of the Company’s audited consolidated financial statements included in the Company’s Annual Report on Form 10-K filed with the SEC on March 24, 2023.

For the three and nine months ended September 30, 2023 and 2022 there were no milestones achieved under the Otsuka Agreement.

For the three months ended September 30, 2023 and 2022 we recognized $0.1 million and an immaterial amount of license of revenue related to certain research and development services. For the nine months ended September 30, 2023 and 2022 we recognized $0.3 million and $0.2 million of license of revenue related to certain research and development services.

National University Corporation Chiba University License Agreement

In August 2017, Perception entered into a license agreement (the “CHIBA License”), with the National University Corporation Chiba University (“CHIBA”), relating to Perception’s drug discovery and development initiatives. Under the CHIBA License, Perception has

been granted a worldwide exclusive license under certain patents and know-how of CHIBA to research, develop, manufacture, use and commercialize therapeutic products.

During the three and nine months ended September 30, 2023 and 2022, respectively, the Company made no material payments pursuant to the CHIBA License.

Allergan License Agreement

In February 2020, Recognify entered into an amended and restated license agreement (the “Allergan License Agreement”), with Allergan Sales, LLC (“Allergan”), under which Allergan granted Recognify an exclusive (non-exclusive as to know-how), sublicensable and worldwide license under certain patent rights and know-how controlled by Allergan to develop, manufacture and commercialize certain products for use in all fields including the treatment of certain diseases and conditions of the central nervous system.

During the three and nine months ended September 30, 2023 and 2022, respectively, Recognify made no material payments pursuant to the Allergan License Agreement.

Columbia Stock Purchase and License Agreement

In June 2020, Kures entered into a license agreement with Trustees of Columbia University (“Columbia”), pursuant to which, Kures obtained an exclusive license under certain patents and technical information to discover, develop, manufacture, use and commercialize such patents or other products in all uses and applications (“Columbia IP”). In addition, in consideration for the rights to the Columbia IP, Kures entered into a Stock Purchase Agreement (the “SPA”) with Columbia in contemplation of the license agreement. Pursuant to the SPA, Kures issued to Columbia certain shares of the Kures’ capital stock, representing 5.0% of Kures common stock on a fully diluted basis. Furthermore, the SPA provided that from time to time, Kures shall issue to Columbia additional shares of Kures’ common stock, at a per share price equal to the then fair market value of each such share, which price shall be deemed to have been paid in partial consideration for the execution, delivery and performance by Columbia of the License Agreement, such that the common stock held by Columbia shall equal to 5.0% of the common stock on a fully diluted basis, at all times up to and through the achievement of certain funding threshold.

During the three and nine months ended September 30, 2023, Kures made no material payments or share issuances in connection with the Columbia agreement.

During the nine months ended September 30, 2022, Kures issued shares of Series A-2 Preferred Stock to certain investors upon the achievement of Series A-2 milestone events. Accordingly, the Company issued certain anti-dilution common stock to Columbia worth $0.3 million. The Company expensed the cost incurred for acquiring license as research & development expense at inception.

Since, the additional anti-dilution shares were issued as partial consideration towards the same license arrangement, the cost of such additional shares was also expensed as research & development expense during the three and nine months ended September 30, 2022. During the three and nine months ended September 30, 2022, the Company recognized $0.4 million and $0.4 million, respectively, of in-process research & development expense in connection with the SPA and the License Agreement.

Accelerate License Agreement

In April 2021, Psyber entered into a license arrangement with Accelerate Technologies Pte. Ltd. (“Accelerate”), whereby Accelerate grants Psyber non-exclusive rights to license and use the technology to commercialize of Psyber’s BCI-enabled companion digital therapeutics in United States of America, Singapore, Member Countries of the European Union, Canada, Australia and New Zealand as a potential treatment for mental health and behavior change, such as substance use disorders including opioid use disorder, mood and anxiety disorders including post-traumatic stress disorder, and treatment-resistant depression.

During the three and nine months ended September 30, 2023 and 2022, respectively, Psyber made no material payments pursuant to the Accelerate License agreement.

Dalriada License Agreement

In December 2021, Invyxis, Inc. (“Invyxis”), a wholly owned subsidiary of the Company, entered into an exclusive services and license agreement (the “Invyxis ESLA”) with Dalriada Drug Discovery Inc. (“Dalriada”). Under the Invyxis ESLA, Dalriada is to exclusively collaborate with Invyxis to develop products, services and processes with the specific purpose of generating products consisting of new chemical entities. Invyxis will pay Dalriada up to $12.8 million in service fees for research and support services. In addition, Invyxis will pay Dalriada success milestone payments and low single digit royalty payments based on net product sales. Invyxis has the right, but not the obligation, to settle future royalty payments based on net product sales with the Company's common stock. Invyxis and Dalriada will determine the equity settlement based on a price per share determined by both parties.

In January 2022, in accordance with the Invyxis ESLA, Invyxis paid an upfront deposit of $1.1 million, which was capitalized as prepaid research and development expense. In December 2022, the Company executed an amendment to the Invyxis ESLA, which reduced the upfront deposit from $1.1 million to $0.5 million. As such, the remaining $0.6 million was applied against research and development expense incurred. The Company will expense the remaining deposit as the services are performed as a component of research and development expense in the consolidated statements of operations.

During the three months ended September 30, 2023 and 2022, the Company recorded $0.4 million and $1.0 million, respectively, as research and development expense in the condensed consolidated statement of operations. During the nine months ended September 30, 2023 and 2022, the Company recorded $1.5 million and $2.8 million, respectively as research and development expense in the condensed consolidated statement of operations.

During the three and nine months ended September 30, 2023 and 2022, respectively, Invyxis made no other service fee payments to Dalriada.

Variable Interest Entities and a Voting Interest Entity - Summary of Primary Beneficiary for VIEs Consolidated Under the VIE Model (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Perception Neuroscience Holdings, Inc. [Member]
Variable Interest Entity [Line Items]
Relationship	Controlled VIE	Controlled VIE
Date Control Obtained	November 2018
Ownership %	59.20%	58.90%
Kures, Inc. [Member]
Variable Interest Entity [Line Items]
Relationship	Controlled VIE	Controlled VIE
Date Control Obtained	August 2019
Ownership %	64.50%	64.50%
EntheogeniX Biosciences, Inc. [Member]
Variable Interest Entity [Line Items]
Relationship	Wholly Owned Subsidiary	Controlled VIE
Date Control Obtained	November 2019
Ownership %	100.00%	80.00%
DemeRx IB, Inc. [Member]
Variable Interest Entity [Line Items]
Relationship	Controlled VIE	Controlled VIE
Date Control Obtained	December 2019
Ownership %	59.50%	59.50%
Recognify Life Sciences, Inc. [Member]
Variable Interest Entity [Line Items]
Relationship	Controlled VIE	Controlled VIE
Date Control Obtained	November 2020
Ownership %	51.90%	51.90%
PsyProtix, Inc. [Member]
Variable Interest Entity [Line Items]
Relationship	Controlled VIE	Controlled VIE
Date Control Obtained	February 2021
Ownership %	75.00%	75.00%
Psyber, Inc. [Member]
Variable Interest Entity [Line Items]
Relationship	Controlled VIE	Controlled VIE
Date Control Obtained	February 2021
Ownership %	75.00%	75.00%
InnarisBio, Inc. [Member]
Variable Interest Entity [Line Items]
Relationship	Controlled VIE	Controlled VIE
Date Control Obtained	March 2021
Ownership %	82.00%	82.00%
TryptageniX Inc. [Member]
Variable Interest Entity [Line Items]
Relationship	Controlled VIE	Controlled VIE
Date Control Obtained	December 2021
Ownership %	65.00%	65.00%

Organization and Description of Business

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Organization and Description of Business

1. Organization and Description of Business

ATAI Life Sciences N.V. (“atai”) is the parent company of ATAI Life Sciences AG and, along with its subsidiaries, is a clinical-stage biopharmaceutical company aiming to transform the treatment of mental health disorders. atai was founded in 2018 as a response to the significant unmet need and lack of innovation in the mental health treatment landscape, as well as the emergence of therapies that previously may have been overlooked or underused, including psychedelic compounds and digital therapeutics. atai is dedicated to developing innovative therapeutics to treat depression, anxiety, addiction, and other mental health disorders.

Since inception, atai has either created wholly owned subsidiaries or has made investments in certain controlled entities, including variable interest entities (“VIEs”) for which atai is the primary beneficiary under the VIE model (collectively, the “Company”). atai is headquartered in Berlin, Germany.

The Company has determined that it has one operating and reporting segment.

Liquidity and Going Concern

The Company has incurred significant losses and negative cash flows from operations since its inception. As of September 30, 2023, the Company had cash and cash equivalents of $76.5 million, short-term securities of $132.5 million and its accumulated deficit was $532.6 million. The Company has historically financed its operations through the sale of equity securities, debt financings, sale of convertible notes and revenue generated from licensing and collaboration arrangements. The Company has not generated any revenues to date from the sale of its product candidates and does not anticipate generating any revenues from the sale of its product candidates unless and until it successfully completes development and obtains regulatory approval to market its product candidates.

The Company currently expects that its existing cash and cash equivalents and short-term securities as of September 30, 2023 will be sufficient to fund its operating expenses and capital expenditure requirements for at least the next 12 months from the date the condensed consolidated financial statements are issued.

Leases (Tables)

9 Months Ended

Sep. 30, 2023

Leases [Abstract]

Schedule of operating leases assets and liabilities lessee

ROU assets and lease liabilities related to the Company’s operating leases are as follows (in thousands):


	Balance Sheet Classification	September 30, 2023		December 31, 2022
Right-of-use assets	Operating lease right-of-use asset, net	$	1,258	$	226
Current lease liabilities	Current portion of lease liability		292		180
Non-current lease liabilities	Non-current portion of lease liability		1,011		44

Components of expenses related to leases is recorded on a straight-line basis over the lease term

The following table summarizes lease costs by component for the three and nine months ended September 30, 2023 and 2022 (in thousands):


Lease Cost Components	Statement of Operations Classification	Three months ended September 30, 2023		Three months ended September 30, 2022		Nine months ended September 30, 2023		Nine months ended September 30, 2022
Operating lease cost	Operating expenses: General and administrative	$	120	$	73	$	431	$	197
Short-term lease cost	Operating expenses: General and administrative		102		106		384		328
Total lease cost		$	222	$	179	$	815	$	525

Schedule of future minimum commitments maturity operating leases

Future minimum commitments under all non-cancelable operating leases are as follows (in thousands):


Year Ended
2023 (excluding nine months ended September 30, 2023)	$	122
2024		399
2025		355
2026		355
2027		355
2028		118
Total lease payments		1,704
Less: Imputed interest		(401	)
Present value of lease liabilities	$	1,303

Schedule of supplemental cash flow information related to operating leases

Supplemental cash flow information related to the Company’s operating leases for the nine months ended September 30, 2023 and 2022 are as follows (in thousands):



	Nine months ended September 30, 2023		Nine months ended September 30, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	304	$	193
Right-of-use assets obtained in exchange for new operating lease liabilities		1,356		487

Corporate Restructuring (Tables)

9 Months Ended

Sep. 30, 2023

Restructuring and Related Activities [Abstract]

Schedule Of Reconciliation Of The Restructuring Charges And Related Payments

A reconciliation of the restructuring charges and related payments for the nine months ended September 30, 2023 is as follows:


	Nine Months Ended September 30, 2023
Restructuring liability as of December 31, 2022	$	—
Restructuring costs expensed during the period		3,206
Non-cash impact of stock-based compensation		(195	)
Cash payments of restructuring liabilities, net		(3,011	)
Restructuring liability as of September 30, 2023	$	—

Accrued Liabilities

9 Months Ended

Sep. 30, 2023

Accrued Liabilities, Current [Abstract]

Accrued Liabilities

9. Accrued Liabilities

Accrued liabilities consist of the following (in thousands):


	September 30, 2023		December 31, 2022
Accrued accounting, legal, and other professional fees	$	3,494	$	3,566
Accrued external research and development expenses		3,964		5,550
Accrued payroll		4,201		5,260
Taxes payable		887		2,224
Other liabilities		463		706
Total	$	13,008	$	17,306

Stock-Based Compensation - Summery of Vested and Non vested Option Outstanding (Parenthetical) (Details)	9 Months Ended
	Sep. 30, 2023 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of options outstanding, including both vested and non-vested options.	18,750,486
Specified Performance Based Vesting [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based payment arrangement, Options expected to vest outstanding	100,000
One to four year service period [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of options outstanding, including both vested and non-vested options.	16,969,592
Three To Four Year Service Period [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of options outstanding, including both vested and non-vested options.	1,159,894
Two Year Service Period [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based payment arrangement, Options expected to vest outstanding	137,000
One Year Service Period [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based payment arrangement, Options expected to vest outstanding	384,000
Two Thousand And Twenty Incentive Plan [Member] \| One to four year service period [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of Options, Granted	9,409,928
Two Thousand And Twenty Incentive Plan [Member] \| Two Year Service Period [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of Options, Granted	137,000
Two Thousand And Twenty Incentive Plan [Member] \| One-Year Anniversary [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of Options, Granted	452,700

Equity Method Investments and Other Investments - Summary of Equity Method Investments and Other Investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Investment [Line Items]
Other Long-term Investments	$ 3,659	$ 6,755
DemeRx NB Inc [Member]
Investment [Line Items]
Other Long-term Investments	1,024	1,024
Juvenescence Limited [Member]
Investment [Line Items]
Other Long-term Investments	0	344
GABA Therapeutics Inc [Member]
Investment [Line Items]
Other Long-term Investments	$ 2,635	$ 5,387

License Agreements - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Jan. 31, 2022	Jun. 30, 2020
License Agreements [Line Items]
Common Stock, Value, Issued	$ 18,571		$ 300				$ 18,571	$ 300	$ 18,562
ATAI Kures Inc. [Member] \| License Agreement Terms [Member]
License Agreements [Line Items]
Percentage of the common stock shares outstanding												5.00%
Research And Development Services [Member] \| License Agreement Terms [Member]
License Agreements [Line Items]
process research And development expense			400					400
Otsuka Agreement [Member]
License Agreements [Line Items]
Revenue Related To Certain Research And Development	100		100				300	200
Columbia Stock Purchase and License Agreement [Member]
License Agreements [Line Items]
Material Payment	0		0				0	0
Accelerate License Agreement [Member]
License Agreements [Line Items]
Material Payment		$ 0		$ 0	$ 0	$ 0
CHIBA License [Member]
License Agreements [Line Items]
Material Payment	0		0				0	0
Allergan License Agreement [Member]
License Agreements [Line Items]
Material Payment	0		0				0	0
Dalriada License Agreement [Member]
License Agreements [Line Items]
Service fees	0		0				0	0		$ 12,800
Dalriada License Agreement [Member] \| Research And Development Services [Member]
License Agreements [Line Items]
process research And development expense	400		$ 1,000				1,500	$ 2,800	600
Invyxis ESLA [Member]
License Agreements [Line Items]
Upfront deposit											$ 1,100
Invyxis ESLA [Member] \| Minimum [Member]
License Agreements [Line Items]
Upfront deposit									500
Invyxis ESLA [Member] \| Maximum [Member]
License Agreements [Line Items]
Upfront deposit									$ 1,100
Otsuka [Member] \| Otsuka Agreement [Member]
License Agreements [Line Items]
Performance obligation										$ 20,000
Otsuka [Member] \| Commercial Milestones [Member] \| Otsuka Agreement [Member]
License Agreements [Line Items]
Milestone payments, receivable	66,000						66,000
Otsuka [Member] \| Development And Regulatory Milestones [Member] \| Otsuka Agreement [Member]
License Agreements [Line Items]
Milestone payments, receivable	$ 35,000						$ 35,000

Variable Interest Entities and a Voting Interest Entity - Additional information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount			$ 3.6	$ 6.8
Variable Interest Entity, Nonconsolidated, Comparison of Carrying Amount of Assets and Liabilities to Maximum Loss Exposure			$ 10.3	$ 7.2
Purchase of common stock	$ 1.0	$ 2.2
GABA Options [Member]
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage			100.00%	80.00%
Minimum [Member] \| EntheogeniX Biosciences, Inc. [Member]
Variable Interest Entity [Line Items]
Equity method investment, ownership percentage			20.00%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating Loss Carryforwards [Line Items]
Provision for income taxes	$ 238	$ 135	$ 588	$ 227

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Defined Contribution Plan (Additional Information) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Retirement Benefits [Abstract]
Labor and Related Expense	$ 0.1	$ 0.1	$ 0.4	$ 0.4

Corporate Restructuring - Schedule Of Reconciliation Of The Cash Restructuring Charges And Related Payments (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2023 USD ($)
Restructuring and Related Activities [Abstract]
Restructuring liability, Beginning Balance	$ 0
Restructuring costs expensed during the period	3,206
Non-cash impact of stock-based compensation	(195)
Cash payments of restructuring liabilities, net	(3,011)
Restructuring liability , Ending Balance	$ 0

Debt - Schedule of Outstanding debt obligations (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt and Lease Obligation [Abstract]
Principal amount	$ 15,000	$ 15,000
End of the term charge	1,042	1,042
Less: unamortized issuance discount	(222)	(274)
Less: unamortized issuance costs	(92)	(113)
Less: unamortized end of term charge	(772)	(952)
Net carrying amount	14,956	14,702
Less: current maturities	0	0
Long-term debt, net of current maturities and unamortized debt discount and issuance costs	$ 14,956	$ 14,702

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References + Details

Subsequent Events

9 Months Ended

Sep. 30, 2023

Subsequent Events [Abstract]

Subsequent Events

21. Subsequent Events

DemeRx IB, Inc. Stock Purchase Agreement

In October 2023, atai and DemeRx, Inc. executed a Stock Purchase and Framework Agreement (the "Stock Purchase Agreement") pursuant to which the Company acquired 100% of the issued and outstanding share capital of DemeRx IB, Inc.

Among other things, upon closing, the Company paid an initial cash consideration of $8.0 million to DemeRx, Inc. with the potential for DemeRx, Inc. to earn additional consideration in the future upon the achievement of certain development milestones.

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 43,371	$ (35,701)	$ (24,753)	$ (110,768)
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	1,709	(4,597)	2,593	(17,452)
Comprehensive loss	45,080	(40,298)	(22,160)	(128,220)
Comprehensive loss attributable to noncontrolling interests	(873)	(1,814)	(2,821)	(3,394)
Foreign currency translation adjustments, net of tax attributable to noncontrolling interests	22	48	31	67
Comprehensive loss attributable to noncontrolling interests	(851)	(1,766)	(2,790)	(3,327)
Comprehensive income (loss) attributable to ATAI Life Sciences N.V. stockholders	$ 45,931	$ (38,532)	$ (19,370)	$ (124,893)

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

+ References

+ Details

Variable Interest Entities and a Voting Interest Entity - Schedule of Non Controlling Interest Recognized to Its Consolidated VIEs Roll Forward (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Noncontrolling Interest [Line Items]
Opening balance	$ 3,087	$ 3,815	$ 5,026	$ 8,447	$ 8,351	$ 9,051
Issuance of noncontrolling interests				0	957
Net loss attributable to noncontrolling interests - preferred	(873)	(729)	(1,219)	(1,456)	(891)	(689)
Net loss attributable to noncontrolling interests - common	0	0	0	(358)
Comprehensive loss attributable to noncontrolling interests	22	1	(8)	48	(30)	(11)
Closing balance	2,236	3,087	3,815	6,681	8,447	8,351
Perception [Member]
Noncontrolling Interest [Line Items]
Opening balance	770	1,037	1,731	3,880	4,650	5,232
Issuance of noncontrolling interests				0	0
Net loss attributable to noncontrolling interests - preferred	(320)	(266)	(700)	(977)	(800)	(571)
Net loss attributable to noncontrolling interests - common	0	0	0
Comprehensive loss attributable to noncontrolling interests	17	1	6	47	30	(11)
Closing balance	467	770	1,037	2,950	3,880	4,650
Kures [Member]
Noncontrolling Interest [Line Items]
Opening balance	330	360	451	957	0	0
Issuance of noncontrolling interests				0	957
Net loss attributable to noncontrolling interests - preferred	65	(32)	(93)	(149)	0	0
Net loss attributable to noncontrolling interests - common	0	0	0	(358)
Comprehensive loss attributable to noncontrolling interests	5	2	2	1	0	0
Closing balance	400	330	360	451	957	0
Recognify [Member]
Noncontrolling Interest [Line Items]
Opening balance	1,987	2,418	2,844	3,610	3,701	3,819
Issuance of noncontrolling interests				0	0
Net loss attributable to noncontrolling interests - preferred	(618)	(431)	(426)	(330)	(91)	(118)
Net loss attributable to noncontrolling interests - common	0	0	0
Comprehensive loss attributable to noncontrolling interests	0	0	0		0	0
Closing balance	$ 1,369	$ 1,987	$ 2,418	$ 3,280	$ 3,610	$ 3,701

- Definition

Amount of equity (deficit) attributable to noncontrolling interest. Excludes temporary equity.

+ References

+ Details

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 76,492	$ 190,613
Securities carried at fair value	132,502	82,496
Prepaid expenses and other current assets	6,831	14,036
Total current assets	215,825	287,145
Property and equipment, net	992	928
Operating lease right-of-use asset, net	1,258	226
Other Investments held at fair value	71,511	0
Other investments	3,659	6,755
Convertible notes receivable - related party	1,519	0
Long term notes receivable - related parties, net	10,349	7,262
Other assets	3,107	3,125
Total assets	308,220	305,441
Current liabilities:
Accounts payable	5,506	2,399
Accrued liabilities	13,008	17,306
Current portion of lease liability	292	180
Other current liabilities	889	12
Total current liabilities	19,695	19,897
Contingent consideration liability - related parties	900	953
Non-current portion of lease liability	1,011	44
Convertible promissory notes - related parties, net of discounts and deferred issuance costs	410	415
Long-term debt, net	14,956	14,702
Other liabilities	2,736	3,664
Total liabilities	39,708	39,675
Commitments and contingencies (Note 16)
Stockholders' equity:
Common stock, 0.10 par value ($0.12 par value at September 30, 2023 and December 31, 2022, respectively); 750,000,000 shares authorized at September 30, 2023 and December 31, 2022, respectively; 166,010,476 and 165,935,914 shares issued and outstanding at September 30, 2023 and December 31, 2022, respectively	18,571	18,562
Additional paid-in capital	799,461	774,092
Share subscription receivable	0	(24)
Accumulated other comprehensive loss	(19,109)	(21,702)
Accumulated deficit	(532,647)	(510,188)
Total stockholders' equity attributable to ATAI Life Sciences N.V. stockholders	266,276	260,740
Noncontrolling interests	2,236	5,026
Total stockholders' equity	268,512	265,766
Total liabilities and stockholders' equity	$ 308,220	$ 305,441

Prepaid Expenses and Other Current Assets (Tables)

9 Months Ended

Sep. 30, 2023

Prepaid Expense and Other Assets, Current [Abstract]

Summary of prepaid expenses and other current assets

Prepaid expenses consist of the following (in thousands):


	September 30, 2023		December 31, 2022
Prepaid insurance	$	2,131	$	2,034
Prepaid research and development related expenses		2,564		4,626
Tax receivables		1,497		5,631
Other		638		1,745
Total	$	6,831	$	14,036

Equity Method Investments and Other Investments - Summary of financial data for investments (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Shedule Of Equity Method Investment Summarized Balance Sheet [Line Items]
Current assets	$ 215,825	$ 287,145
Total assets	308,220	305,441
Current liabilities	19,695	19,897
Total liabilities	39,708	39,675
GABA Therapeutics Inc [Member]
Shedule Of Equity Method Investment Summarized Balance Sheet [Line Items]
Current assets	1,654	3,933
Non-current assets	0	0
Total assets	1,654	3,933
Current liabilities	1,519	1,542
Non-current liabilities	0	0
Total liabilities	1,519	1,542
COMPASS Pathways Plc Two [Member]
Shedule Of Equity Method Investment Summarized Balance Sheet [Line Items]
Current assets	284,806	191,651
Non-current assets	14,227	5,643
Total assets	299,033	197,294
Current liabilities	15,350	15,596
Non-current liabilities	30,428	418
Total liabilities	$ 45,778	$ 16,014

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (bb)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-25

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-12

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(8))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(18))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 13: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 14: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 23: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 26: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

+ Details

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (bb)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-25

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483467/210-10-45-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(9))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

+ Details

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.

+ References

+ Details

- Definition

Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-25

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (bb)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 830
-Name Accounting Standards Codification
-Section 55
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480167/946-830-55-12

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(14))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 19: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

Reference 21: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 22: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19-26)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

- Definition

Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-25

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (bb)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483467/210-10-45-5

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 19: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

Reference 20: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

Reference 21: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.21)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

- Definition

Amount of obligation due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 25
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481231/810-10-45-25

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (bb)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481203/810-10-50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(g)(1)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481687/323-10-50-3

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 825
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 28
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482907/825-10-50-28

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(ii))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1A
-Subparagraph (SX 210.13-01(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1A

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(i))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(A))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iii)(B))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(4)(iv))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1B
-Subparagraph (SX 210.13-02(a)(5))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480097/470-10-S99-1B

Reference 18: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

Reference 19: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481404/852-10-50-7

Reference 20: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(23))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 21: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 201.5-02(24))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 22: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 201.5-02(25))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 23: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 201.5-02(26))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Fair Value Measurement - Summary of Fair Value Measurement on Recurring Basis (Detail) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Cash equivalents:
Cash & Money market funds	$ 650	$ 72,334
Other investment at fair value	71,511	0
Assets fair value	206,183	154,830
Liabilities:
Contingent consideration liability—related parties	900	953
Liability fair value	900	953
U.S. Treasuries [Member]
Cash equivalents:
Fair value of debt securities	85,122	0
Commercial Paper [Member]
Cash equivalents:
Fair value of debt securities	0	5,958
Corporate Notes/Bonds [Member]
Cash equivalents:
Fair value of debt securities	4,925	17,719
Convertible notes receivable - related party [Member]
Cash equivalents:
Other investment at fair value	1,519
U.S. Government Agencies [Member]
Cash equivalents:
Fair value of debt securities	42,456	58,819
Fair Value, Inputs, Level 1 [Member]
Cash equivalents:
Cash & Money market funds	650	72,334
Other investment at fair value	70,787	0
Assets fair value	71,437	72,334
Liabilities:
Contingent consideration liability—related parties	0	0
Liability fair value	0	0
Fair Value, Inputs, Level 1 [Member] \| U.S. Treasuries [Member]
Cash equivalents:
Fair value of debt securities	0	0
Fair Value, Inputs, Level 1 [Member] \| Commercial Paper [Member]
Cash equivalents:
Fair value of debt securities	0	0
Fair Value, Inputs, Level 1 [Member] \| Corporate Notes/Bonds [Member]
Cash equivalents:
Fair value of debt securities	0	0
Fair Value, Inputs, Level 1 [Member] \| Convertible notes receivable - related party [Member]
Cash equivalents:
Other investment at fair value	0
Fair Value, Inputs, Level 1 [Member] \| U.S. Government Agencies [Member]
Cash equivalents:
Fair value of debt securities	0	0
Fair Value, Inputs, Level 2 [Member]
Cash equivalents:
Cash & Money market funds	0	0
Other investment at fair value	0	0
Assets fair value	132,502	82,496
Liabilities:
Contingent consideration liability—related parties	0	0
Liability fair value	0	0
Fair Value, Inputs, Level 2 [Member] \| U.S. Treasuries [Member]
Cash equivalents:
Fair value of debt securities	85,122	0
Fair Value, Inputs, Level 2 [Member] \| Commercial Paper [Member]
Cash equivalents:
Fair value of debt securities	0	5,958
Fair Value, Inputs, Level 2 [Member] \| Corporate Notes/Bonds [Member]
Cash equivalents:
Fair value of debt securities	4,925	17,719
Fair Value, Inputs, Level 2 [Member] \| Convertible notes receivable - related party [Member]
Cash equivalents:
Other investment at fair value	0
Fair Value, Inputs, Level 2 [Member] \| U.S. Government Agencies [Member]
Cash equivalents:
Fair value of debt securities	42,456	58,819
Fair Value, Inputs, Level 3 [Member]
Cash equivalents:
Cash & Money market funds	0	0
Other investment at fair value	724	0
Assets fair value	2,243	0
Liabilities:
Contingent consideration liability—related parties	900	953
Liability fair value	900	953
Fair Value, Inputs, Level 3 [Member] \| U.S. Treasuries [Member]
Cash equivalents:
Fair value of debt securities	0	0
Fair Value, Inputs, Level 3 [Member] \| Commercial Paper [Member]
Cash equivalents:
Fair value of debt securities	0	0
Fair Value, Inputs, Level 3 [Member] \| Corporate Notes/Bonds [Member]
Cash equivalents:
Fair value of debt securities	0	0
Fair Value, Inputs, Level 3 [Member] \| Convertible notes receivable - related party [Member]
Cash equivalents:
Other investment at fair value	1,519
Fair Value, Inputs, Level 3 [Member] \| U.S. Government Agencies [Member]
Cash equivalents:
Fair value of debt securities	$ 0	$ 0

Leases - Schedule of operating leases assets and liabilities lessee (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Leases [Abstract]
Operating lease right-of-use asset, net	$ 1,258	$ 226	$ 200
Current portion of lease liability	292	180	100
Non-current portion of lease liability	$ 1,011	$ 44	$ 100

Stock-Based Compensation - Summary of Employee Stock Ownership Plan (ESOP) Disclosures (Detail) - HSOP Shares [Member] - HSOP Plan[Member] - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of optionsOutstanding as of January 1, 2023	6,921,829
Number of options Outstanding as of September 30, 2023	6,921,829	6,921,829
Number of Options,Options exercisable as of September 30, 2023	6,625,439
Weighted- Average Exercise Price Beginning as of December 31, 2022	$ 6.64
Weighted- Average Exercise Price as of September 30, 2023	6.64
Weighted- Average Exercise Price,Options exercisable as of September 30, 2023	$ 6.64
Weighted- Average Remaining Contractual Term (Years)	12 years 3 months 3 days	13 years 3 days
Weighted- Average Remaining Contractual Term (Years),Options exercisable as of September, 2023	12 years 3 months 3 days

Variable Interest Entities and a Voting Interest Entity - Summary of the Assets and Liabilities for all Consolidated VIEs (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Prepaid expenses and other current assets	$ 6,831	$ 14,036
Total current assets	215,825	287,145
Property and equipment, net	992	928
Long term notes receivable	10,349	7,262
Other assets	3,107	3,125
Total assets	308,220	305,441
Current liabilities:
Accounts payable	5,506	2,399
Accrued liabilities	13,008	17,306
Short-term notes payable	132,500
Other current liabilities	889	12
Total current liabilities	19,695	19,897
Contingent consideration liability	900	953
Other non-current liabilities	2,736	3,664
Total liabilities	39,708	39,675
Perception [Member]
Current assets:
Cash	776	8,703
Accounts receivable	84	197
Prepaid expenses and other current assets	275	466
Total current assets	1,135	9,366
Long term notes receivable	0	0
Other assets	0	0
Total assets	1,135	9,366
Current liabilities:
Accounts payable	421	661
Accrued liabilities	886	1,738
Other current liabilities	0	121
Total current liabilities	1,308	2,520
Total liabilities	1,308	2,520
Kures [Member]
Current assets:
Cash	404	220
Accounts receivable	0	0
Prepaid expenses and other current assets	48	174
Total current assets	452	394
Long term notes receivable	0	0
Other assets	0	0
Total assets	452	394
Current liabilities:
Accounts payable	301	25
Accrued liabilities	14	266
Other current liabilities	0	2
Total current liabilities	314	293
Total liabilities	314	293
EntheogeniX [Member]
Current assets:
Cash	1,845	467
Accounts receivable	0	0
Prepaid expenses and other current assets	203	91
Total current assets	2,048	558
Long term notes receivable	0	0
Other assets	0	0
Total assets	2,048	558
Current liabilities:
Accounts payable	252	124
Accrued liabilities	114	121
Other current liabilities	0	0
Total current liabilities	365	245
Total liabilities	365	245
DemeRx IB [Member]
Current assets:
Cash	9,878	12,251
Accounts receivable	0	0
Prepaid expenses and other current assets	2	21
Total current assets	9,880	12,272
Long term notes receivable	1,062	1,075
Other assets	0	0
Total assets	10,942	13,347
Current liabilities:
Accounts payable	335	332
Accrued liabilities	206	671
Other current liabilities	0	133
Total current liabilities	541	1,136
Total liabilities	541	1,136
Recognify [Member]
Current assets:
Cash	2,846	7,526
Accounts receivable	0	0
Prepaid expenses and other current assets	745	1,742
Total current assets	3,591	9,268
Long term notes receivable	0	0
Other assets	0	0
Total assets	3,591	9,268
Current liabilities:
Accounts payable	335	381
Accrued liabilities	1,173	596
Other current liabilities	0	2
Total current liabilities	1,508	979
Total liabilities	1,508	979
PsyProtix [Member]
Current assets:
Cash	468	1
Accounts receivable	0	0
Prepaid expenses and other current assets	0	66
Total current assets	468	67
Long term notes receivable	95	109
Other assets	0	0
Total assets	563	176
Current liabilities:
Accounts payable	0	33
Accrued liabilities	19	46
Other current liabilities	0	1
Total current liabilities	19	80
Total liabilities	19	80
Psyber [Member]
Current assets:
Cash	442	683
Accounts receivable	0	0
Prepaid expenses and other current assets	0	0
Total current assets	442	683
Long term notes receivable	0	0
Other assets	721	353
Total assets	1,163	1,036
Current liabilities:
Accounts payable	0	10
Accrued liabilities	94	37
Other current liabilities	0	1
Total current liabilities	94	48
Total liabilities	94	48
InnarisBio [Member]
Current assets:
Cash	819	719
Accounts receivable	0	0
Prepaid expenses and other current assets	156	13
Total current assets	974	732
Long term notes receivable	0	0
Other assets	0	0
Total assets	974	732
Current liabilities:
Accounts payable	0	3
Accrued liabilities	315	158
Other current liabilities	0	1
Total current liabilities	315	162
Total liabilities	315	162
TryptageniX Inc. [Member]
Current assets:
Cash	1	513
Accounts receivable	0	0
Prepaid expenses and other current assets	2,675	2,850
Total current assets	2,676	3,363
Long term notes receivable	0	0
Other assets	0	0
Total assets	2,676	3,363
Current liabilities:
Accounts payable	0	0
Accrued liabilities	15	154
Other current liabilities	0	0
Total current liabilities	15	154
Total liabilities	$ 15	$ 154

Basis of Presentation, Consolidation and Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Basis of Presentation, Consolidation and Summary of Significant Accounting Policies

2. Basis of Presentation, Consolidation and Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and follow the requirements of the United States Securities and Exchange Commission (“SEC”) for interim financial reporting. Accordingly, these unaudited condensed consolidated financial statements do not include all of the information and disclosures required by U.S. GAAP for complete financial statements as certain footnotes or other financial information that are normally required by U.S. GAAP can be condensed or omitted. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022 filed with the SEC on March 24, 2023.

The unaudited condensed consolidated financial statements have been prepared on the same basis as the annual financial statements and, in the opinion of management, reflect all adjustments, which include only normal recurring adjustments, necessary for a fair statement of the Company’s financial position, its results of operations and comprehensive loss, and its cash flows for the periods presented. The results of operations for the three and nine months ended September 30, 2023 are not necessarily indicative of the results to be expected for the year ending December 31, 2023 or for any other future annual or interim period.

Any reference in these notes to applicable accounting guidance is meant to refer to the authoritative U.S. GAAP included in the Accounting Standards Codification (“ASC”), and Accounting Standards Update (“ASU”) issued by the Financial Accounting Standards Board (“FASB”).

Reclassifications

Certain reclassifications were made to prior period amounts in the condensed consolidated financial statements and accompanying notes to conform with current year presentation due to the increase in the balances of the Company's operating right-of-use asset and related lease liability during the period.

Consolidation

The Company's condensed consolidated financial statements include the accounts of atai and its subsidiaries. All intercompany balances and transactions have been eliminated in the consolidation.

The Company's policy is to consolidate all entities that it controls by ownership of a majority of the outstanding voting stock. In addition, entities that meet the definition of a variable interest entity (“VIE”) for which atai is the primary beneficiary are consolidated. The primary beneficiary is the party who has the power to direct the activities of a VIE that most significantly impact the entity’s economic performance

and who has an obligation to absorb losses of the entity or a right to receive benefits from the entity that could potentially be significant to the entity. For consolidated entities that are less than wholly-owned, the third-party’s holding of equity interest is presented as Noncontrolling interests in the Company's condensed consolidated balance sheets and condensed consolidated statements of stockholders' equity. The portion of net earnings attributable to the noncontrolling interests is presented as Net loss attributable to noncontrolling interests in the Company's condensed consolidated statements of operations.

In situations in which atai has significant influence, but not control, of an entity that does not qualify as a VIE, the Company applies the cost and equity method of accounting, with its portion of net losses recorded in Losses from investments in equity method investees, net of tax in the Company's condensed consolidated statements of operations.

Significant Accounting Policies

During the nine months ended September 30, 2023, there were no significant changes to the Company’s significant accounting policies as described in the Company’s audited consolidated financial statements as of and for the year ended December 31, 2022 except as described below.

Use of Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Significant estimates and assumptions made in the accompanying condensed consolidated financial statements include, but are not limited to the fair value of the Company’s investment in Intelgenx Technologies Corp. (“IntelGenx”), the fair value of convertible notes receivable - related party, securities carried at fair value, contingent consideration liability—related parties, in-process research and development assets (“IPRD”) and noncontrolling interests recognized in acquisitions, the valuation of share-based awards, and accruals for research and development costs.

The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable. Actual results may differ from those estimates or assumptions.

Cash and Cash Equivalents

The Company considers all highly liquid investments purchased with original maturities of three months or less from the purchase date to be cash equivalents. As of September 30, 2023 and December 31, 2022, cash and cash equivalents consisted of cash on deposit and cash held in high-yield savings accounts and money market funds. The substantial majority of the Company’s cash is held in financial institutions in the United States and at times in excess of federally insured limits.

Investment Securities Portfolio

The following table sets forth the fair value of atai's available-for-sale securities portfolio at the dates indicated:


	Fair Value
	September 30, 2023		December 31, 2022
Money Market Funds	$	650	$	72,334
U.S. Treasuries		85,122		—
Commercial Paper		—		5,958
Corporate Notes/Bonds		4,925		17,719
U.S. Government Agencies		42,456		58,819
	$	133,153	$	154,830

In January 2022, the Company invested in a certain investment portfolio, which is comprised of Money Market Funds, U.S. Treasury securities, Commercial Paper, Corporate Notes/Bonds, and U.S. government agencies securities. The Company classified securities in the investment portfolio as available-for-sale securities. Furthermore, the Company elected the fair value option for the available-for-sale securities in the investment portfolio (see Note 7). The decision to elect the fair value option, which is irrevocable once elected, is determined on an instrument-by-instrument basis and applied to an entire instrument. The net gains or losses, if any, on an investment for which the fair value option has been elected are recognized as a change in fair value of securities carried at fair value on the Condensed Consolidated Statements of Operations and the amortized cost of investments approximates their fair value. The Company's securities in the investment portfolio will mature within two years.

Fair Value Measurements

Assets and liabilities recorded at fair value on a recurring basis in the condensed consolidated balance sheets are categorized based upon the level of judgment associated with the inputs used to measure their fair values. Fair value is defined as the exchange price that would be received for an asset or an exit price that would be paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value

must maximize the use of observable inputs and minimize the use of unobservable inputs. The authoritative guidance on fair value measurements establishes a three-tier fair value hierarchy for disclosure of fair value measurements as follows:

Level 1—Observable inputs such as unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date;

Level 2—Inputs (other than quoted prices included in Level 1) are either directly or indirectly observable for the asset or liability. These include quoted prices for similar assets or liabilities in active markets and quoted prices for identical or similar assets or liabilities in markets that are not active; and

Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. To the extent that the valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised by the Company in determining fair value is greatest for instruments categorized in Level 3. A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement.

The Company’s contingent consideration liability—related parties, IntelGenx convertible notes receivable - related party, IntelGenx Initial Warrants, IntelGenx Additional Units Warrants and IntelGenx 2023 Initial Warrants are carried at fair value, determined according to Level 3 inputs in the fair value hierarchy described above (See Note 7). The IntelGenx common stock and securities carried at fair value are determined according to Level 2 inputs in the fair value hierarchy above. The carrying amount reflected in the accompanying condensed consolidated balance sheets for cash, prepaid expenses and other current assets, accounts payable and accrued liabilities approximate their fair values, due to their short-term nature.

The carrying amounts of the Company’s remaining outstanding convertible promissory notes—related parties (“2018 Convertible Notes”) do not approximate fair value because the fair value is driven by the underlying value of the Company’s common shares into which the notes are to be converted. As of September 30, 2023, the carrying amount and fair value amount of the 2018 Convertible Notes was $0.4 million and $4.2 million, respectively. As of December 31, 2022, the carrying amount and fair value amount of the 2018 Convertible Notes was $0.4 million and $13.1 million, respectively. In 2022, several noteholders of the 2018 Convertible Notes elected to convert their promissory notes into the Company's common shares. See Note 11 for additional discussion.

Fair Value Option

As permitted under Accounting Standards Codification 825, Financial Instruments, or ASC 825, the Company has elected the fair value option to account for its investment in common shares of IntelGenx, which otherwise would be subject to ASC 323. In accordance with ASC 825, the Company records this investment at fair value under Other investments held at fair value in the Company's condensed consolidated balance sheets and changes in fair value are recognized as Change in fair value of convertible notes receivable - related party, in the condensed consolidated statements of operations. The carrying value of the investment remained at zero as of September 30, 2023 and December 31, 2022, respectively.

Furthermore, as noted above the Company also elected the fair value option for its investment securities portfolio.

Emerging Growth Company Status

The Company is an emerging growth company, as defined in the Jumpstart Our Business Startups Act of 2012 (the “JOBS Act”). Under the JOBS Act, emerging growth companies can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies. The Company has elected to use this extended transition period for complying with new or revised accounting standards that have different effective dates for public and private companies until the earlier of the date that it (i) is no longer an emerging growth company or (ii) affirmatively and irrevocably opts out of the extended transition period provided in the JOBS Act. As a result, these condensed consolidated financial statements may not be comparable to companies that comply with the new or revised accounting pronouncements as of public company effective dates.

As described in “Recently Adopted Accounting Pronouncements” below, the Company early adopted certain accounting standards, as the JOBS Act does not preclude an emerging growth company from adopting a new or revised accounting standard earlier than the time that such standard applies to private companies. The Company expects to use the extended transition period for any other new or revised accounting standards during the period in which it remains an emerging growth company.

Recently Adopted Accounting Pronouncements

ASU 2016-02 Leases (Topic 842)

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842), which is a comprehensive new lease standard that amends various aspects of existing accounting guidance for leases. The core principle of Topic 842 requires lessees to recognize on the condensed

consolidated balance sheets a liability to make lease payments and a right-of-use asset representing its right to use the underlying asset for the lease term for both finance and operating leases with lease terms greater than twelve months. The lease liability is measured at the present value of the unpaid lease payments and the right-of-use asset is derived from the calculation of the lease liability. Topic 842 also requires lessees to disclose key information about leasing arrangements. For public entities, ASU 2016-02 is effective for fiscal years beginning after December 15, 2018. As a result of the Company having elected the extended transition period for complying with new or revised accounting standards pursuant to Section 107(b) of the JOBS Act, ASU 2016-02 is effective for the Company beginning after December 15, 2021. The Company adopted the new standard on January 1, 2022 using the modified transition approach as of the effective date.

The Company elected the “package of three practical expedients,” which permitted it to not reassess under the new standard its prior conclusions about lease identification, lease classification, and initial direct costs. As a result, the Company has continued to account for existing leases - i.e. leases for which the commencement date is before January 1, 2022 - in accordance with Topic 840 throughout the entire lease term, including periods after the effective date, with the exception that the Company applied the new balance sheet recognition guidance for operating leases and applied Topic 842 for remeasurements and modifications after the Transition Date. The Company also elected the hindsight expedient in determining the lease term and assessing impairment of right-of-use assets when transitioning to ASC 842. As a result, the Company evaluated the lease term for its existing leases as of the transition date, January 1, 2022.

The most significant impact of the initial adoption of Topic 842 on the Company’s condensed consolidated financial statements was the recognition of a $0.2 million operating lease right-of-use asset, a $0.1 million current operating lease liability, and a $0.1 million long-term operating lease liability on the Company’s condensed consolidated balance sheets related to its existing facility operating lease. The Company did not have a deferred rent liability recorded in connection with its existing facility operating lease. There was no material impact of the initial adoption to the Company’s condensed consolidated balance sheets, condensed consolidated statements of operations, and no cumulative-effect adjustment to accumulated deficit.

In May 2022, the Company entered into a five-year lease arrangement that commenced in January 2023 related to our principal executive office located at Wallstraße 16, 10179, Berlin, Germany. This lease will require lease payments over the term of approximately $1.8 million, which is further described in Note 10 of the notes to the Company's unaudited condensed consolidated financial statements.

ASU 2016-13 Financial Instruments - Credit Losses

In June 2016, the FASB issued ASU 2016-13, Financial Instruments — Credit Losses. This guidance requires immediate recognition of management’s estimates of current expected credit losses. Under the prior model, losses were recognized only when losses were deemed probable. The new model is applicable to most financial assets and certain other instruments that are not measured at fair value through net income.

The Company utilizes an undiscounted probability-of-default (“PD”) and loss-given-default (“LGD”) method for estimating credit losses on its assets pool, which is comprised of loans to other companies. Under the PD and LGD method, the expected credit loss percentage (or “loss rate”) is calculated as the probability of default (i.e., the probability the asset will default within the given time frame) multiplied by the loss given default (i.e., the percentage of the asset not expected to be collected because of default). To implement the PD and LGD method, the Company utilizes readily observable market information from term-matched public debt to derive market implied current expected credit losses (“MICECL”) grouped by Standard & Poor’s (“S&P”) credit rating scale. The MICECL framework considers risk characteristics of assets pool based on publicly available or estimated S&P credit ratings to calculate an appropriate credit loss reserve for the pool or group of assets.

ASU 2016-13 requires a cumulative effect adjustment to the statement of financial position as of the beginning of the first reporting period in which it is effective. On January 1, 2023, the Company adopted this guidance and applied a modified-retrospective transition approach through a cumulative-effect adjustment to retained earnings upon adoption. At transition, the new accounting guidance’s adoption resulted in an increase to accumulated deficit of $0.5 million, net of tax attributable to an increase in the allowance for credit losses related to its Short term notes receivable - related parties, net and Long term notes receivable - related parties, net.

Further, the FASB issued ASU 2019-04, ASU 2019-05, ASU 2019-11, ASU 2020-03 and ASU 2022-02 to provide additional clarification and guidance on the credit losses standard. We adopted ASU 2019-04, ASU 2019-05, ASU 2019-11, ASU 2020-03 and ASU 2022-02 on January 1, 2023. The adoption of these standards did not have a material impact on the Company’s consolidated financial statements or disclosures.

Stock-Based Compensation - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Detail) - Service And Performance Based Options [Member] - Two Thousand And Twenty Incentive Plan [Member]	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted average expected term in years	6 years 1 month 24 days	6 days 1 hour
Weighted average expected stock price volatility	87.50%	71.50%
Risk-free interest rate, Minimum	3.50%	1.46%
Risk-free interest rate, Maximum	4.09%	3.38%
Expected dividend yield	0.00%	0.00%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 1D
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480483/718-10-35-1D

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 35
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480483/718-10-35-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(02)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(03)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(02)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 26: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 27: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 28: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(v)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

+ Details

Variable Interest Entities and a Voting Interest Entity - Schedule of Roll Forward of the Redeemable Noncontrolling Interests Balance (Detail) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022
Redeemable Noncontrolling Interest [Line Items]
Net loss attributable to noncontrolling interests - common	$ 0	$ 0	$ 0	$ (358)
Kures [Member]
Redeemable Noncontrolling Interest [Line Items]
Net loss attributable to noncontrolling interests - common	$ 0	$ 0	$ 0	$ (358)

Equity Method Investments and Other Investments

9 Months Ended

Sep. 30, 2023

Cash and Cash Equivalents [Abstract]

Equity Method Investments and Other Investments

5. Equity Method Investments and Other Investments

Equity Method Investments

As of September 30, 2023 and December 31, 2022, the Company accounted for the following investments in the investee’s common stock under the equity method (amounts in thousands):


		As of September 30, 2023				As of December 31, 2022
	Date First	Common Stock		Carrying		Common Stock		Carrying
Investee	Acquired	Ownership %		Value		Ownership %		Value
Innoplexus A.G.	August 2018	35.0%		$	—	35.0%		$	—
COMPASS Pathways plc	December 2018	15.5%	(1)		—	22.4%			—
GABA Therapeutics, Inc	November 2020	7.5%	(2)		—	7.5%	(2)		—
Total				$	—			$	—

Other investments held at fair value

As of September 30, 2023 and December 31, 2022, the carrying values of Other investments held at fair value, were as follows (in thousands):


	September 30, 2023			December 31, 2022
COMPASS Pathways plc	$	70,787	(1)	$	—
IntelGenx Technologies Corp.		724			—
Total	$	71,511		$	—

COMPASS Pathways plc

COMPASS Pathways plc (“COMPASS”) is a mental health care company dedicated to pioneering the development of a new model of psilocybin therapy with its product COMP360. The Company first acquired investments in COMPASS in December 2018 with additional investments through 2021, resulting in the Company’s ownership of COMPASS ADSs as of December 31, 2022 of 22.4%. On August 18, 2023, COMPASS closed its most recent financing round in which the Company did not participate. Following the financing, the Company's ownership interest in COMPASS was 15.5%.

For the year ended December 31, 2022 and the period through August 18, 2023, the Company maintained significant influence through its ownership interest and accounted for its investment in under the equity method.

The carrying value of the Company's investment in COMPASS was reduced to zero as of December 31, 2022 due to IPR&D charges with no alternative future use and the Company recognizing its proportionate share of COMPASS net losses. During 2023, the Company did not record any losses from investments in equity method investees. During the three months and nine months ended September 30, 2022, the Company recognized its proportionate share of COMPASS’ net loss of $0.6 million and $10.1 million, respectively, as losses from investments in equity method investees, net of tax on the condensed consolidated statements of operations.

Following the August 18, 2023 financing, the Company evaluated its ability to continue to exercise significant influence over its investment and determined that it no longer had significant influence and as such will account for its COMPASS investment under ASC 321 at fair value. Any changes in fair value of the Company's investment in COMPASS will be recorded as a change in fair value of Other investments held at fair value in its condensed consolidated statements of operations.

Based on quoted market prices, the market value of the Company’s ownership in COMPASS was $70.8 million as of September 30, 2023. For the three and nine months ended September 30, 2023, the Company has recorded $69.0 million of change in fair value of other investments held at fair value in its condensed consolidated statements of operations.

IntelGenx Technologies Corp.

IntelGenx is a novel drug delivery company focused on the development and manufacturing of novel oral thin film products for the pharmaceutical market. In March 2021, IntelGenx and the Company entered into the Strategic Development Agreement and Purchaser Rights Agreement (“PPA”).

Securities Purchase Agreement

In May 2021, IntelGenx and the Company executed a Securities Purchase Agreement (the “IntelGenx SPA”) after obtaining IntelGenx shareholder approval, whereby IntelGenx issued shares of its common stock and warrants to the Company at a price of approximately $12.3 million. Each warrant (the “Initial Warrants”) entitles the Company to purchase one share at a price of $0.35 per share for a period of three years from the closing of the initial investment in March 2021. Pursuant to the IntelGenx SPA, the Company has the right to purchase (in cash, or in certain circumstances, the Company’s equity) additional units for a period of three years from the closing of the initial investment (the “Additional Unit Warrants”). Each Additional Unit Warrant will be comprised of (i) one share of common stock and (ii) one half of one warrant (the “Additional Warrants”). The price for the Additional Unit Warrants will be (i) until the date which is 12 months following the closing and the purchase does not result in the Company owning more than 74,600,000 common shares of IntelGenx, $0.331 (subject to certain exceptions), and (ii) until the date which is 12 months following the closing and the purchase results in the Company owning more than 74,600,000 common shares of IntelGenx or following the date which is 12 months following the closing regardless of the number of shares held by the Company, the lower of (A) a 20% premium to the volume weighted average price of the common share for the thirty trading days immediately preceding the news release of the additional closing, and (B) $0.50 if purchased in the second year following closing or $0.75, if purchased in the third year following closing. Each Additional Warrant will entitle the Company, for a period of three years from the date of issuance, to purchase one share at the lesser of either (i) a 20% premium to the price of the corresponding additional share, or (ii) the price per share under which shares of IntelGenx are issued under convertible instruments that were outstanding on February 16, 2021, provided that the Company may not exercise Additional Warrants to purchase more than the lesser of (x) 44,000,000 common shares of IntelGenx, and (y) the number of common shares issued by IntelGenx under outstanding convertibles held by other investors as of February 16, 2021.

Following the initial closing, the Company held a 25% voting interest in IntelGenx. Pursuant to the PPA, the Company is entitled to designate a number of directors to the IntelGenx’s board of directors in the same proportion as the shares of common stock held by the Company to the outstanding of IntelGenx common shares. The Company has significant influence over IntelGenx through the Company's ownership interest in IntelGenx’s equity and its noncontrolling representation on IntelGenx’s board of directors.

The Company qualified for and elected to account for its investment in the IntelGenx common stock under the fair value option. The Company believes that the fair value option better reflects the underlying economics of the IntelGenx common stock investment. The Initial Warrants and the Additional Units Warrant are accounted for at fair value under ASC 321 and recorded in Other investments held at fair value on the condensed consolidated balance sheets. The Company applied a calibrated model and determined that the initial aggregate fair value of its $12.3 million investment was equal to the transaction price and recorded the common shares at $3.0 million, the Initial Warrants at $1.2 million and the Additional Unit Warrants at $8.2 million on a relative fair value basis resulting in no initial gain or loss recognized in the condensed consolidated statements of operations. The Company recognizes subsequent changes in fair value of the common shares, the Initial Warrants and the Additional Unit Warrants as a component of other income (expense), net in the condensed consolidated statements of operations. The carrying amount of the investment was reduced to zero as of December 31, 2021. During the three and nine months ended September 30, 2023, the Company recognized a zero mark-to-market (“MTM”) gain/loss in the condensed consolidated statements of operations. The carrying value of the investment remained at zero as of September 30, 2023 and December 31, 2022, respectively.

Subscription Agreement

On August 30, 2023, IntelGenx and the Company entered into a subscription agreement (the “Subscription Agreement”), under which the Company paid IntelGenx $2.2 million for 2,220 convertible debenture units (the "Initial Units"), with each convertible debenture unit consisting of:

any time from the date that is six months following their issuance up to and including August 31, 2026 at a conversion price equal to $0.185 per common share; and

(ii) 5,405 common share purchase warrants of IntelGenx (the “2023 Initial Warrants”), each exercisable at an exercise price of $0.26 per common share for a period of three years following their issuance.

Pursuant to the Subscription Agreement, the Company agreed to subscribe for an additional 750 convertible debenture units (the "Subsequent Units") at a price of $750,000 subject to obtaining Shareholder Approvals (as defined below). The Subsequent Units shall be issued on the same terms as the Initial Units, with each Subsequent Unit consisting of (i) $1,000 principal amount convertible promissory notes and (ii) 5,405 common share purchase warrants of IntelGenx. The purchase of the Subsequent Units shall occur five business days following the date on which Shareholder Approvals are obtained.

Amendment to Subscription Agreement

Effective September 30, 2023 , IntelGenx and the Company amended the Subscription Agreement (the “Amended Subscription Agreement”), allowing the Company, subject to obtaining Shareholder Approvals (as defined below), to purchase up to an additional 7,401 convertible debenture units (the “Call Option Units”). The Call Option Units shall be issued on the same terms as the Initial Units, with each Call Option Unit consisting of (i) $1,000 principal amount convertible promissory notes, and (ii) 5,405 common share purchase warrants of IntelGenx.

The issuance of any Call Option Unit shall result in a corresponding reduction in the Company's remaining purchase right pursuant to the IntelGenx SPA executed in May 2021 (the “2021 Purchase Right”), with such right to be reduced by the maximum number of shares of common stock issuable in connection with such Call Option Units, and (ii) in the event that the 2021 Purchase Right has been fully or partially exercised such that the aggregate number of shares of common stock issued thereunder together with the number of shares of common stock issuable in accordance with the Call Option Units would exceed 100,000,000, the number of shares of common stock that may be issued in connection with the Call Option Units shall be reduced such that the aggregate number of shares of common stock issued thereunder together with the number of shares of common stock issuable in accordance with the Call Option Units does not exceed 100,000,000. The maximum number of shares of common stock available under the 2021 Purchase Right was reduced from 130,000,000 shares of common stock to 100,000,000 shares of common stock, such that in no event shall the aggregate number of shares of common stock issuable in accordance with the Call Option Units and the 2021 Purchase Right exceed 100,000,000.

There are limits over the conversion of the Initial Units, Subsequent Units, Call Options Units and the IntelGenx Term Loan (as per the Conversion Feature defined in Note 6) into common shares as follows:

(i) the aggregate number of IntelGenx common stock issued upon conversion of the Initial Units, Subsequent Units, Call Options Units and the IntelGenx Term Loan to any holders shall be limited to 43,664,524 Unit Shares (the “General Cap”), which equals 24.99% of the issued and outstanding shares of common stock of IntelGenx as of the date of the Subscription Agreement, unless the General Shareholder Approval (as defined below) is obtained; and

(ii) the aggregate number of IntelGenx common stock issued upon conversion of the Initial Units, Subsequent Units, Call Options Units and the IntelGenx Term Loan to insiders of IntelGenx shall be limited to 17,645,809 Unit Shares (the “Insider Issuance Cap”), which equals 9.99% of the issued and outstanding shares of common stock of IntelGenx as of the date of the Subscription Agreement, unless the Insider Shareholder Approval (as defined below) is obtained.

The Subsequent Units and the Call Option Units may not be exercised by the Company, in full or in part, unless the Pricing Shareholder Approval (as defined below) is obtained.

“General Shareholder Approval” means the approval by the shareholders of IntelGenx of the issuance of shares in connection with the Subscription Agreement, the Amendment to Subscription Agreement and the IntelGenx Term Loan above the General Cap.

“Insider Shareholder Approval” means the approval by the disinterested shareholders of IntelGenx to issue shares to insiders of IntelGenx in connection with the Subscription Agreement, the Amendment to Subscription Agreement and the IntelGenx Term Loan above the Insider Issuance Cap.

“Pricing Shareholder Approval” means, the approval by the disinterested shareholders of IntelGenx of (i) the conversion of the convertible promissory notes underlying the Subsequent Units and Call Option Units at a price of $0.185 per share of common stock, which may be less than the market price of the shares of common stock of IntelGenx, less the maximum allowable discount permitted under the rules of the Toronto Stock Exchange ( the "TSX") at the time of issuance of such notes, as applicable, in accordance with Section 607(e) of the TSX Company Manual, and (ii) the exercise of common share purchase warrants of IntelGenx underlying the Subsequent Units and Call Option Units at an exercise price of $0.26 per share of common stock, which may be less than the market price of the shares of common

stock of IntelGenx at the time of issuance of such warrants, as applicable, in accordance with Section 607(i) of the TSX Company Manual.

“Shareholder Approvals” means, collectively, the General Shareholder Approval, the Insider Shareholder Approval and the Pricing Shareholder Approval. IntelGenx intends to seek the Shareholder Approvals at an upcoming special meeting of its shareholders to be held on November 28, 2023.

The 2023 Initial Warrants are accounted for at fair value under ASC 321. At September 30, 2023, the Company recorded the $0.7 million fair value of the 2023 Initial Warrants in Other investments held at fair value on the condensed consolidated balance sheets. The Company will recognize subsequent changes in fair value of the 2023 Initial Warrants as a component of other income (expense), net in the condensed consolidated statements of operations. See Note 6 for further discussion of the 2023 Initial Notes.

Strategic Development Agreement

Pursuant to the Strategic Development Agreement, the Company engages IntelGenx to conduct research and development projects (“Development Project”) using IntelGenx’s proprietary oral thin film technology. Under the terms of the Strategic Development Agreement, the Company can select four (4) program products. As of the effective date of the Strategic Development Agreement, the Company nominated two (2) program products - DMT and Salvinorin A. 20% of any funds that IntelGenx received or will receive through the Company’s equity investment under the IntelGenx SPA will be available to be credited towards research and development services that IntelGenx conducts for the Company under the Development Projects. The Company is eligible to receive a total credit of $2.5 million. For the three and nine months ended September 30, 2023, research and development expense relating to the Strategic Development Agreement were $0.1 million and $0.3 million, which was applied as a reduction in research and development expenses in accordance with the Strategic Development Agreement. For the three and nine months ended September 30, 2022, there was an immaterial amount of research and development services performed in relation to the Strategic Development Agreement.

Other investments

The Company has accounted for its other investments that do not have a readily determinable fair value under the measurement alternative. Under the measurement alternative, the Company measured its other investments at cost, less any impairment, plus or minus, if any, observable price changes in orderly transactions for an identical or similar investment of the same issuer.


	September 30,		December 31,
	2023		2022
GABA Therapeutics, Inc.	$	2,635	$	5,387
DemeRx NB, Inc.		1,024		1,024
Juvenescence Limited		—		344
Total	$	3,659	$	6,755

The Company’s investments in the preferred stock of Innoplexus, GABA, and DemeRx NB are not considered as in-substance common stock due to the existence of substantial liquidation preferences and therefore did not have subordination characteristics that were substantially similar to the common stock.

As of December 31, 2022 the Company’s investment in Juvenescence Limited (“Juvenescence”) was in common stock, however, it was not able to exercise significant influence over the operating and financial decisions of Juvenescence. During the three months ended September 30, 2023, the Company divested its investment in Juvenescence Limited ("Juvenescence") and recognized a $0.1 million gain on the transaction reflected in other income on the condensed consolidated statements of operations.

During the three and nine months ended September 30, 2023 and 2022 there were no observable changes in price recorded related to the Company’s Other investments.

During the three and nine months ended September 30, 2023 and 2022, the Company evaluated all of its other investments to determine if certain events or changes in circumstance during these time periods in 2023 and 2022 had a significant adverse effect on the fair value of any of its investments in non-consolidated entities. Based on this analysis, the Company did not note any impairment indicators associated with the Company’s Other investments.

Innoplexus AG

Innoplexus is a technology company that provides “Data as a Service” and “Continuous Analytics as a Service” solutions that aims to help healthcare organizations leverage their technologies and expedite the drug development process across all stages—preclinical, clinical, regulatory and commercial. The Company first acquired investments in Innoplexus in August 2018.

As of December 31, 2020, the Company owned 35.0% of the common stock issued by Innoplexus. The Company had significant influence over Innoplexus through its noncontrolling representation on the investee’s supervisory board. Accordingly, the Company’s investment in Innoplexus’ common stock was accounted for in accordance with the equity method. The Company’s investment in Innoplexus’ preferred stock did not meet the criteria for in-substance common stock. As such, the investment in Innoplexus’ preferred stock was accounted for under the measurement alternative as discussed below.

In February 2021, the Company entered into a Share Purchase and Assignment Agreement (the “Innoplexus SPA”) to sell its shares of common and preferred stock held in Innoplexus to a current investor of Innoplexus (the “Purchaser”) in exchange for an initial purchase price of approximately $2.4 million. In addition, the Company is entitled to receive contingent payments based on the occurrence of subsequent equity transactions or liquidity events at Innoplexus as determined under the Innoplexus SPA.

Pursuant to the Innoplexus SPA, the Purchaser is required to hold a minimum number of shares equivalent to the number of shares purchased from the Company through December 31, 2026. In the event that the Purchaser is in breach of this requirement, the purchaser is required to pay the Company an additional purchase price of approximately $9.6 million. The transaction was accounted for as a secured financing as it did not qualify for sale accounting under ASC Topic 860, Transfers and Servicing (ASC 860), due to the provision under the Innoplexus SPA which constrained the Purchaser from its right to pledge or exchange the underlying shares and provided more than a trivial benefit to the Company. The initial proceeds from the transaction are reflected as a secured borrowing liability of $2.3 million and $2.4 million as of September 30, 2023 and December 31, 2022, which is included in Other liabilities in the Company’s condensed consolidated balance sheets. The Company will continue to account for its investment in Innoplexus’ common stock under the equity method of accounting and its investment in Innoplexus’ preferred shares under the measurement alternative.

In addition, the Innoplexus SPA also provides the right for the Company to receive additional consideration with a maximum payment outcome of $22.3 million should the equity value of Innoplexus exceed certain thresholds upon the occurrence of certain events. The Company concluded that this feature met the definition of a derivative which required bifurcation. As the probability of the occurrence of certain events defined in the Innoplexus SPA was less than remote, the Company concluded that the fair value of the embedded derivative ascribed to this feature was de minimis as of September 30, 2023.

The carrying value of the Company’s investment in Innoplexus was zero as of September 30, 2023 and December 31, 2022.

GABA Therapeutics, Inc.

GABA is a California based biotechnology company focused on developing GRX-917 for anxiety, depression and a broad range of neurological disorders. The Company is deemed to have significant influence over GABA through its total ownership interest in GABA’s equity, including the Company’s investment in GABA’s preferred stock, and the Company’s noncontrolling representation on GABA’s board of directors.

Common Stock Investment

The Company’s investment in GABA’s common stock was accounted for in accordance with the equity method.

In November 2020 the Company exercised its option to purchase additional shares of common stock of GABA at a price of approximately $1.8 million pursuant to an Omnibus Amendment Agreement under which the Right of First Refusal and Co-Sale Agreement was amended. Pursuant to the amended Right of First Refusal and Co-Sale Agreement, the Company also has the option but not the obligation to purchase additional shares of common stock for up to $2.0 million from the existing common shareholders.

The carrying value of the investment in GABA common stock was reduced to zero as of December 31, 2020 due to IPR&D charges with no alternative future use and remained zero as of September 30, 2023.

Preferred Stock Investment

The Company’s investment in GABA’s preferred stock did not meet the criteria for in-substance common stock. As such, the investment in GABA’s preferred stock is accounted for under the measurement alternative.

In August 2019, GABA and the Company entered into the Preferred Stock Purchase Agreement (the “GABA PSPA”), whereby GABA issued shares of its Series A preferred stock to the Company at a price of approximately $5.5 million. At closing, the Company had an overall ownership interest of over 20% in GABA and a noncontrolling representation on the board.

Pursuant to the GABA PSPA, the Company was obligated to purchase additional shares of Series A preferred stock for up to $10.0 million with the same price per share as its initial investment, upon the achievement of specified contingent clinical development milestones. In April 2021, pursuant to the GABA PSPA, the Company purchased additional shares of Series A preferred stock of GABA, for an aggregate cost of $5.0 million based on the achievement of certain development milestones. In May 2021, the Company exercised its option to purchase additional shares of Series A preferred stock prior to the achievement of certain development milestone for an aggregate cost of $5.0 million completing its obligation to purchase additional shares. The completion of the Series A Preferred stock purchase in May 2021 was deemed to be a reconsideration event at which point GABA was no longer deemed a VIE as GABA now had sufficient equity at risk to finance its activities through the initial development period without additional subordinated financial support. Entities that do not qualify as a VIE are assessed for consolidation under the voting interest model (“VOE model”). Under the VOE model, the Company consolidates the entity if it determines that it, directly or indirectly, has greater than 50% of the voting shares and that other equity holders do not have substantive voting, participating or liquidation rights. While the Company holds greater than 50% of the outstanding equity interest of GABA, the Company does not have the power to control the entity. Concurrent with the exercise of the option, the Company executed a side letter with the other equity holders of GABA agreeing to forego the rights to additional seats on the board of directors, resulting in the Company lacking the ability to control the investee. The Company concluded that it does not have a controlling financial interest that would require consolidation under the VOE model and accounted for the investments in GABA preferred stock under the measurement alternative per ASC 323. As of September 30, 2023 and December 31, 2022, the investment in GABA’s preferred stock was recorded in Other Investments on the condensed consolidated balance sheets.

In May 2021, GABA and the Company entered into an Amendment to Preferred Stock Purchase Agreement (the "Amended GABA PSPA”) under which the GABA PSPA was amended and shares of its Series A preferred stock were issued to the Company at a price of approximately $0.6 million. Pursuant to the Amended GABA PSPA, the Company is obligated to purchase additional shares of Series A preferred stock from GABA for up to $1.5 million with the same price per share as its initial investment upon the achievement of specified contingent clinical development milestones. In September 2022, pursuant to the Amended PSPA, GABA issued additional shares of its Series A preferred stock to the Company at a price of approximately $0.6 million based on the achievement of certain development milestones. As of September 30, 2023 the Company's remaining obligation to purchase additional shares of Series A preferred stock from GABA is for up to $0.9 million at the same price per share as its initial investment upon the achievement of specified contingent milestones.

In accordance with the Amended GABA PSPA, the Company also has the option but not the obligation to purchase the aforementioned additional shares of Series A preferred stock at any time prior to the achievement of any milestone at the same price per share as its initial investment.

GABA’s net losses attributable to the Company were determined based on the Company’s ownership percentage of preferred stock in GABA and recorded to the Company’s investments in GABA preferred stock. During the three months ended September 30, 2023 and 2022, the Company recognized its proportionate share of GABA’s net loss of $0.2 million and $1.8 million as losses from investments in equity method investees, net of tax on the condensed consolidated statements of operations. During the nine months ended September 30, 2023 and 2022, the Company recognized its proportionate share of GABA’s net loss of $3.2 million and $4.5 million as losses from investments in equity method investees, net of tax on the condensed consolidated statements of operations.

DemeRx NB

In December 2019, the Company jointly formed DemeRx NB with DemeRx. DemeRx and DemeRx NB entered into a Contribution Agreement whereby DemeRx assigned all of its rights, title, and interests in and to all of its assets relating to DMX-1002, Noribogaine, in exchange for shares of common stock of DemeRx NB. DemeRx NB will use the contributed intellectual property to develop Noribogaine. Noribogaine is an active metabolite of ibogaine designed to have a longer plasma half-life and potentially reduced hallucinogenic effects compared to ibogaine.

In connection with the Contribution Agreement, the parties entered into a Series A Preferred Stock Purchase Agreement (the “DemeRx NB PSPA”) pursuant to which the Company purchased shares of Series A preferred stock of DemeRx NB at a purchase price of $1.0 million. At closing, the Company had less than 20% of ownership interest in DemeRx NB and a noncontrolling representation on DemeRx NB's board of directors. The investment in DemeRx NB was recorded in Other Investments on the condensed consolidated balance sheets under the measurement alternative under ASC 321.

Pursuant to the DemeRx NB PSPA, the Company also has the option but not the obligation to purchase additional shares of DemeRX NB's Series A preferred stock at a purchase price of up to an aggregate of $19.0 million with the same price per share as its initial investment in December 2019. As of September 30, 2023, the Company has not exercised its option to purchase any shares of Series A preferred stock of DemeRx NB.

Summarized Financial Information

Summarized financial information is presented as of September 30, 2023 as this information is not readily available as of August 18, 2023 and the Company has no practical way to estimate otherwise.

Balance Sheets


	September 30, 2023
	COMPASS		GABA
Current assets	$	284,806	$	1,654
Non-current assets		14,227		—
Total assets	$	299,033	$	1,654

Current liabilities	$	15,350	$	1,519
Non-current liabilities		30,428		—
Total liabilities	$	45,778	$	1,519


	December 31, 2022
	COMPASS		GABA
Current assets	$	191,651	$	3,933
Non-current assets		5,643		—
Total assets	$	197,294	$	3,933

Current liabilities	$	15,596	$	1,542
Non-current liabilities		418		—
Total liabilities	$	16,014	$	1,542

Statements of operations


	Three Months Ended September 30, 2023
	COMPASS			GABA
Revenue	$	—		$	—
Loss from continuing operations	$	(34,062	)	$	(238	)
Net loss	$	(33,389	)	$	(238	)

	Three Months Ended September 30, 2022
	COMPASS			GABA
Revenue	$	—		$	—
Loss from continuing operations	$	(25,536	)	$	(2,060	)
Net loss	$	(18,371	)	$	(2,060	)


	Nine Months Ended September 30, 2023
	COMPASS			GABA
Revenue	$	—		$	—
Loss from continuing operations	$	(98,514	)	$	(3,199	)
Net loss	$	(85,932	)	$	(3,199	)

	Nine Months Ended September 30, 2022
	COMPASS			GABA
Revenue	$	—		$	—
Loss from continuing operations	$	(78,212	)	$	(5,630	)
Net loss	$	(60,579	)	$	(5,630	)

Basis of Presentation, Consolidation and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Schedule of fair value of our available-for-sale debt securities portfolio

The following table sets forth the fair value of atai's available-for-sale securities portfolio at the dates indicated:


	Fair Value
	September 30, 2023		December 31, 2022
Money Market Funds	$	650	$	72,334
U.S. Treasuries		85,122		—
Commercial Paper		—		5,958
Corporate Notes/Bonds		4,925		17,719
U.S. Government Agencies		42,456		58,819
	$	133,153	$	154,830

- Definition

Tabular disclosure of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-9

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (aa)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (aaa)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-2

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-3

+ Details

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended
	May 31, 2022	Sep. 30, 2023	Jan. 01, 2023	Dec. 31, 2022	Jan. 01, 2022
Accounting Policies [Line Items]
Operating lease right-of-use asset, net		$ 1,258		$ 226	$ 200
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]					Other Assets, Noncurrent
Current portion of lease liability		292		180	$ 100
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]					Other Liabilities, Current
Non-current portion of lease liability		1,011		44	$ 100
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]					Other Liabilities, Noncurrent
Carrying Value Of Investment		0		0
Cumulative Effect, Period of Adoption, Adjustment [Member]
Accounting Policies [Line Items]
Accumulated Deficit Net Of Tax			$ 500
Lease Agreements [Member]
Accounting Policies [Line Items]
Operating Lease Payment	$ 1,800
2018 Convertible Notes [Member]
Accounting Policies [Line Items]
Carrying amount of convertible promissory note		400		400
Fair value amount of convertible promissory note		$ 4,200		$ 13,100

Debt

9 Months Ended

Sep. 30, 2023

Debt Disclosure [Abstract]

Debt

11. Debt

Convertible Promissory Notes

2018 Convertible Promissory Notes—Related Parties

Convertible promissory notes—related parties, net of discounts and deferred issuance costs, consisted of the following (in thousands):


	September 30, 2023		December 31, 2022
Convertible notes issued in October 2020	$	410	$	415
Total	$	410	$	415

In November 2018, the Company executed a terms and conditions agreement (the “Convertible Note Agreement”) under which it was authorized to issue up to €1.0 million or $1.2 million in convertible promissory notes to investors. An investor would become a party to the Convertible Note Agreement and would be issued a convertible promissory note by executing and delivering a subscription form. In November 2018 and October 2020, certain investors subscribed to the Convertible Note Agreement and the Company issued convertible promissory notes in the aggregate principal amount of €0.2 million or $0.2 million and €0.8 million or $1.0 million, respectively (collectively, the “2018 Convertible Notes”).

The 2018 Convertible Notes are non-interest-bearing, unsecured and are due and payable on September 30, 2025, unless previously redeemed, converted, purchased or cancelled. Each 2018 Convertible Note has a notional value of €1 and is convertible into one share of ATAI Life Sciences AG upon the payment of €17.00. Conversion rights may be exercised by a noteholder at any time prior to maturity, except during certain periods subsequent to the consummation of the IPO. The 2018 Convertible Notes may be declared for early redemption by the noteholders upon occurrence of specified events of default, including payment default, insolvency and a material adverse change in the Company’s business, operations or financial or other condition. Upon early redemption, the conversion right with respect to the 2018 Convertible Notes may no longer be exercised. More information on these notes can be found in Note 10 of the Company’s audited consolidated financial statements included in the Company’s Annual Report on Form 10-K filed with the SEC on March 24, 2023.

In connection with the Convertible Note Agreement, the Company issued convertible notes in aggregate principal amounts of €0.5 million or $0.6 million to Apeiron, the family office of the Company’s co-founder, and €0.3 million or $0.4 million to one other shareholder of the Company who is the founder of COMPASS in October 2020.

Conversion of 2018 Convertible Promissory Notes - Related Parties

Upon the Company's 2021 corporate reorganization, atai became the sole shareholder of ATAI Life Sciences AG. In connection with the corporate reorganization, all former shareholders of ATAI Life Sciences AG contributed their shares of ATAI Life Sciences AG to atai and received sixteen shares in atai for every one share of ATAI Life Sciences AG. In 2021 and 2022, several noteholders elected to convert their convertible promissory notes into shares of atai. These investors paid €17.00 per share for an aggregate amount of €5.8 million or $6.9 million and €4.6 million or $4.6 million, respectively in order to convert their convertible promissory notes into ATAI Life Sciences AG common shares, which was in accordance with the original terms of the 2018 Convertible Note Agreements, and then exchange such shares in ATAI Life Sciences AG for shares of atai through a transfer and sale arrangement.

The Company accounted for the conversion of the 2018 Convertible Notes as a conversion such that carrying values of these notes were derecognized with an offset to common stock at par of ATAI Life Sciences AG and the excess of the carrying values of these notes over the common stock at par of ATAI Life Sciences AG was recorded as additional paid-in capital. Concurrently, with the conversion of the 2018 Convertible Notes into ATAI Life Sciences AG shares, the shares of ATAI Life Sciences AG that were issued to the noteholders were exchanged for shares of atai through a transfer and sale arrangement. As ATAI Life Sciences AG continued to remain a wholly owned subsidiary of atai, the transaction was accounted for as an equity transaction that resulted in no gain or loss recognition.

Term Loan

Hercules Loan and Security Agreement

In August 2022, the Company and certain subsidiaries, as guarantors, and Hercules Capital, Inc. entered into a Loan and Security Agreement the “Hercules Loan Agreement”. The Hercules Loan Agreement provides for term loans in an aggregate principal amount of up to $175.0 million under multiple tranches (the “2022 Term Loan Facility”).

On May 26, 2023, ATAI Life Sciences N.V. (the “Company”), ATAI Life Sciences AG (“ATAI AG” and together with the Company, the “Borrowers”) and certain subsidiary guarantors of the Company (collectively, the “Subsidiary Guarantors”) entered into the Second Amendment to Loan and Security Agreement (the “Amendment”), with the several banks and other financial institutions or entities from time to time parties to the Hercules Loan Agreement (collectively, the “Lenders”) and Hercules Capital, Inc., a Maryland corporation, in its capacity as administrative agent and collateral agent for itself and for the Lenders (the “Agent”) which amends that certain Loan and

Security Agreement, dated August 9, 2022 (as amended by that certain First Amendment to Loan and Security Agreement dated as of March 13, 2023, the “Existing Loan Agreement,” and as amended by the Amendment, the “Agreement”) to, among other things, (i) extend the availability of Tranche 1B of $10.0 million, from May 1, 2023, under the Existing Loan Agreement, to November 15, 2024, (ii) extend the availability of Tranche 1C of $15.0 million, from December 15, 2023, under the Existing Loan Agreement, to December 15, 2024, (iii) provide Tranche 1D of $20.0 million, available upon the earlier of (x) the full draw of Tranche 1C and (y) the expiration of Tranche 1C availability, through February 15, 2025, (iv) extend the availability of Tranche 2 of $15.0 million, from June 30, 2024, under the Existing Loan Agreement, subject to certain conditions under the Agreement, to the earlier of (x) the full draw of Tranche 1D and (y) the expiration of Tranche 1D availability, through March 15, 2025, subject to the Tranche 2 Draw Test, (v) extend the timeline to achieve the second amortization extension condition, from June 30, 2024, in the Existing Loan Agreement, to December 15, 2024, (vi) amend the Tranche 2 Draw Test, satisfaction of which is a condition to draw Tranche 2 under the Agreement and (vii) extend the financial covenant commencement date, from the later of (x) July 1, 2023, and (y) the date that the outstanding debt under the facility is equal to or greater than $40.0 million, in the Existing Loan Agreement, to the later of (x) May 1, 2024, and (y) the date that the outstanding debt under the facility is equal to or greater than $30.0 million, provided, that the financial covenant is waived if the Company has a market capitalization of at least $550.0 million.

The 2022 Term Loan Facility will mature on August 1, 2026 (the “Maturity Date”), which may be extended until February 1, 2027 if the Company achieves certain performance milestones, raises at least $175.0 million of unrestricted new net cash proceeds from certain permitted sources after the Closing Date and prior to June 30, 2024, and satisfies certain other specified conditions. The outstanding principal balance of the 2022 Term Loan Facility bears interest at a floating interest rate per annum equal to the greater of either (i) the prime rate as reported in the Wall Street Journal plus 4.55% and (ii) 8.55%. Accrued interest is payable monthly following the funding of each term loan advance. The Company may make payments of interest only, without any loan amortization payments, for a period of thirty (30) months following the Closing Date, which period may be extended to (i) thirty-six months if certain additional performance milestones have been achieved; and (ii) forty-two months if certain additional performance milestones have been achieved. At the end of the interest only period, the Company is required to begin repayment of the outstanding principal of the 2022 Term Loan Facility in equal monthly installments.

The Hercules Loan Agreement contains customary closing and commitment fees, prepayment fees and provisions, events of default and representations, warranties and affirmative and negative covenants, including a financial covenant requiring the Company to maintain certain levels of cash in accounts subject to a control agreement in favor of the Agent (the “Qualified Cash”) at all times commencing from the Closing Date, which includes a cap on the amount of cash that can be held by, among others, certain of our foreign subsidiaries in Australia and the United Kingdom. In addition, the financial covenant under the Loan Agreement requires that beginning on the later of (i) July 1, 2023 and (ii) the date on which the aggregate outstanding amount borrowed under the 2022 Term Loan Facility is equal to or greater than $40.0 million, the Company shall maintain Qualified Cash in an amount no less than the sum of (1) 33% of the outstanding amount under the 2022 Term Loan Facility, and (2) the amount of the Borrowers’ and Subsidiary Guarantors’ accounts payable that have not been paid within 180 days from the invoice date of the relevant account payable, subject to certain exceptions; provided, that the financial covenant shall not apply on any day that the Company's market capitalization is at least $550.0 million measured on a consecutive 10-business day period immediately prior to such date of measurement and tested on a daily basis. Upon the occurrence of an event of default, including a material adverse effect, subject to certain exceptions, on ATAI NV and ATAI AG’s, taken together, business, operations, properties, assets or financial condition, and subject to any specified cure periods, all amounts owed by the Company may be declared immediately due and payable by the Lenders. As of September 30, 2023, the Company was in compliance with all applicable covenants under the Hercules Loan Agreement.

In addition, the Company is required to make a final payment fee (the “End of Term Charge”) upon the earlier of (i) the Maturity Date, (ii) the date that the Company prepays, in full or in part, the principal balance of the 2022 Term Loan Facility, or (iii) the date that the outstanding balance of the 2022 Term Loan Facility becomes due and payable. The End of Term Charge is 6.95% of the aggregate original principal amount of the term loans so repaid or prepaid under the Loan Agreement.

The Company may, at its option, prepay the term loans in full or in part, subject to a prepayment penalty equal to (i) 2.00% of the principal amount prepaid if the prepayment occurs on or prior to the first anniversary of the Closing Date, (ii) 1.0% of the principal amount prepaid if the prepayment occurs after the first anniversary and on or prior to the second anniversary of the Closing Date, and (iii) 0.5% of the principal amount prepaid if the prepayment occurs after the second anniversary and prior to the Maturity Date.

The Company incurred financing expenses related to the Hercules Loan Agreement, which are recorded as an offset to long-term debt on the Company's condensed consolidated balance sheets. These deferred financing costs are being amortized over the term of the debt using the effective interest method, and are included in other income (expense), net in the Company’s condensed consolidated statements of operations.

During the three and nine months ended September 30, 2023, interest expense included $0.1 million and $0.3 million of amortized deferred financing costs related to the 2022 Term Loan Facility. As the Hercules Loan Agreement was executed in August 2022, during the three

and nine months ended September 30, 2022 the Company did not incur any interest expense or amortized deferred financing costs related to the 2022 Term Loan Facility.

Outstanding debt obligations are as follows (in thousands):



	September 30, 2023			December 31, 2022
Principal amount	$	15,000		$	15,000
End of the term charge		1,042			1,042
Less: unamortized issuance discount		(222	)		(274	)
Less: unamortized issuance costs		(92	)		(113	)
Less: unamortized end of term charge		(772	)		(952	)
Net carrying amount		14,956			14,702
Less: current maturities		—			—
Long-term debt, net of current maturities and unamortized debt discount and issuance costs	$	14,956		$	14,702

The fair value of the outstanding debt obligations under the 2022 Term Loan Facility was $16.1 million as of September 30, 2023, and $14.9 million as of December 31, 2022, respectively. The fair value of the debt obligations under the 2022 Term Loan Facility represent Level 3 measurements within the fair value hierarchy.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 470
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//470/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1C

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

+ Details

Variable Interest Entities and a Voting Interest Entity (Tables)

9 Months Ended

Sep. 30, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary of Primary Beneficiary for VIEs Consolidated Under the VIE Model

As of September 30, 2023 and December 31, 2022, the Company has accounted for the following consolidated investments as VIEs, excluding the wholly owned subsidiaries:


Consolidated Entities	Relationship as of September 30, 2023	Relationship as of December 31, 2022	Date Control Obtained	Ownership % September 30, 2023	Ownership % December 31, 2022
Perception Neuroscience Holdings, Inc.	Controlled VIE	Controlled VIE	November 2018	59.2%	58.9%
Kures, Inc.	Controlled VIE	Controlled VIE	August 2019	64.5%	64.5%
EntheogeniX Biosciences, Inc.	Wholly Owned Subsidiary	Controlled VIE	November 2019	100.0%	80.0%
DemeRx IB, Inc.	Controlled VIE	Controlled VIE	December 2019	59.5%	59.5%
Recognify Life Sciences, Inc.	Controlled VIE	Controlled VIE	November 2020	51.9%	51.9%
PsyProtix, Inc.	Controlled VIE	Controlled VIE	February 2021	75.0%	75.0%
Psyber, Inc.	Controlled VIE	Controlled VIE	February 2021	75.0%	75.0%
InnarisBio, Inc.	Controlled VIE	Controlled VIE	March 2021	82.0%	82.0%
TryptageniX Inc.	Controlled VIE	Controlled VIE	December 2021	65.0%	65.0%

Summary of the Assets and Liabilities for all Consolidated VIEs

The following table presents the assets and liabilities (excluding intercompany balances that were eliminated in consolidation) for all VIEs as of September 30, 2023 (in thousands):


	Perception		Kures		EntheogeniX		DemeRx IB		Recognify		PsyProtix		Psyber		InnarisBio		TryptageniX
Assets:
Current assets:
Cash	$	776	$	404	$	1,845	$	9,878	$	2,846	$	468	$	442	$	819	$	1
Accounts receivable		84		—		—		—		—		—		—		—		—
Prepaid expenses and other current assets		275		48		203		2		745		—		—		156		2,675
Total current assets		1,135		452		2,048		9,880		3,591		468		442		974		2,676
Long term notes receivable		—		—		—		1,062		—		95		—		—		—
Other assets		—		—		—		—		—		—		721		—		—
Total assets	$	1,135	$	452	$	2,048	$	10,942	$	3,591	$	563	$	1,163	$	974	$	2,676
Liabilities:
Current liabilities:
Accounts payable	$	421	$	301	$	252	$	335	$	335	$	—	$	—	$	—	$	—
Accrued liabilities		886		14		114		206		1,173		19		94		315		15
Other current liabilities		—		—		—		—		—		—		—		—		—
Total current liabilities		1,308		314		365		541		1,508		19		94		315		15
Total liabilities	$	1,308	$	314	$	365	$	541	$	1,508	$	19	$	94	$	315	$	15

The following table presents the assets and liabilities (excluding intercompany balances that were eliminated in consolidation) for all consolidated VIEs as of December 31, 2022 (in thousands):


	Perception		Kures		EntheogeniX		DemeRx IB		Recognify		PsyProtix		Psyber		InnarisBio		TryptageniX
Assets:
Current assets:
Cash	$	8,703	$	220	$	467	$	12,251	$	7,526	$	1	$	683	$	719	$	513
Accounts receivable		197		—		—		—		—		—		—		—		—
Prepaid expenses and other current assets		466		174		91		21		1,742		66		—		13		2,850
Total current assets		9,366		394		558		12,272		9,268		67		683		732		3,363
Long term notes receivable		—		—		—		1,075		—		109		—		—		—
Other assets		—		—		—		—		—		—		353		—		—
Total assets	$	9,366	$	394	$	558	$	13,347	$	9,268	$	176	$	1,036	$	732	$	3,363
Liabilities:
Current liabilities:
Accounts payable	$	661	$	25	$	124	$	332	$	381	$	33	$	10	$	3	$	—
Accrued liabilities		1,738		266		121		671		596		46		37		158		154
Other current liabilities		121		2		—		133		2		1		1		1		—
Total current liabilities		2,520		293		245		1,136		979		80		48		162		154
Total liabilities	$	2,520	$	293	$	245	$	1,136	$	979	$	80	$	48	$	162	$	154

Schedule of Non Controlling Interest Recognized to Its Consolidated VIEs Roll Forward

The Company recognizes noncontrolling interests related to its consolidated VIEs and provides a roll forward of the noncontrolling interests balance, as follows (in thousands):


	Perception			Kures			Recognify			Total
Balance as of December 31, 2022	$	1,731		$	451		$	2,844		$	5,026
Net loss attributable to noncontrolling interests - common		—			—			—			—
Net loss attributable to noncontrolling interests - preferred		(700	)		(93	)		(426	)		(1,219	)
Comprehensive loss attributable to noncontrolling interests		6			2			—			8
Balance as of March 31, 2023	$	1,037		$	360		$	2,418		$	3,815
Net loss attributable to noncontrolling interests - common		—			—			—			—
Net loss attributable to noncontrolling interests - preferred		(266	)		(32	)		(431	)		(729	)
Comprehensive loss attributable to noncontrolling interests		(1	)		2			—			1
Balance as of June 30, 2023	$	770		$	330		$	1,987		$	3,087
Net loss attributable to noncontrolling interests - common		—			—			—			—
Net income (loss) attributable to noncontrolling interests - preferred		(320	)		65			(618	)		(873	)
Comprehensive loss attributable to noncontrolling interests		17			5			—			22
Balance as of September 30, 2023	$	467		$	400		$	1,369		$	2,236


	Perception			Kures			Recognify			Total
Balance as of December 31, 2021	$	5,232		$	—		$	3,819		$	9,051
Net loss attributable to noncontrolling interests - preferred		(571	)		—			(118	)		(689	)
Comprehensive loss attributable to noncontrolling interests		(11	)		—			—			(11	)
Balance as of March 31, 2022	$	4,650		$	—		$	3,701		$	8,351
Issuance of noncontrolling interests		—			957			—			957
Net loss attributable to noncontrolling interests - preferred		(800	)		—			(91	)		(891	)
Comprehensive loss attributable to noncontrolling interests		30			—			—			30
Balance as of June 30, 2022	$	3,880		$	957		$	3,610		$	8,447
Issuance of noncontrolling interests		—			—			—			—
Net loss attributable to noncontrolling interests - preferred		(977	)		(149	)		(330	)		(1,456	)
Net loss attributable to noncontrolling interests - common		—			(358	)		—			(358	)
Comprehensive loss attributable to noncontrolling interests		47			1			—			48
Balance as of September 30, 2022	$	2,950		$	451		$	3,280		$	6,681

- Definition

Tabular disclosure of the significant judgments and assumptions made in determining whether a variable interest (as defined) held by the entity requires the variable interest entity (VIE) (as defined) to be consolidated and (or) disclose information about its involvement with the VIE, individually or in aggregate (as applicable); the nature of restrictions, if any, on the consolidated VIE's assets and on the settlement of its liabilities reported by an entity in its statement of financial position, including the carrying amounts of such assets and liabilities; the nature of, and changes in, the risks associated with involvement in the VIE; how involvement with the VIE affects the entity's financial position, financial performance, and cash flows; the lack of recourse if creditors (or beneficial interest holders) of the consolidated VIE have no recourse to the general credit of the primary beneficiary (if applicable); the terms of arrangements, giving consideration to both explicit arrangements and implicit variable interests, if any, that could require the entity to provide financial support to the VIE, including events or circumstances that could expose the entity to a loss; the methodology used by the entity for determining whether or not it is the primary beneficiary of the variable interest entity; the significant factors considered and judgments made in determining that the power to direct the activities of a VIE that most significantly impact the VIE's economic performance are shared (as defined); the carrying amounts and classification of assets and liabilities of the VIE included in the statement of financial position; the entity's maximum exposure to loss, if any, as a result of its involvement with the VIE, including how the maximum exposure is determined and significant sources of the entity's exposure to the VIE; a comparison of the carrying amounts of the assets and liabilities and the entity's maximum exposure to loss; information about any liquidity arrangements, guarantees, and (or) other commitments by third parties that may affect the fair value or risk of the entity's variable interest in the VIE; whether or not the entity has provided financial support or other support (explicitly or implicitly) to the VIE that it was not previously contractually required to provide or whether the entity intends to provide that support, including the type and amount of the support and the primary reasons for providing the support; and supplemental information the entity determines necessary to provide.

+ References + Details

Corporate Restructuring

9 Months Ended

Sep. 30, 2023

Restructuring and Related Activities [Abstract]

Corporate Restructuring

In February 2023, the Company restructured its workforce and eliminated approximately 30% of its global workforce in order to more effectively allocate its research and development and other resources supporting the revised business and program priorities and to reduce operational costs.

Restructuring expense related to the workforce reduction was incurred primarily during the nine months ended September 30, 2023, resulting in $3.2 million of restructuring expense, which consisted of $3.0 million of cash expenditures for severance and other employee separation-related costs and $0.2 million of stock-based compensation expense. Of the restructuring expense, for the three and nine months ended September 30, 2023, $1.8 million and $1.4 million were recorded in research and development expenses and general and administrative expenses, respectively, in the condensed consolidated statement of operations.

As of September 30, 2023, all restructuring liabilities had been paid in full and we had $0 of restructuring liabilities included in accrued expenses on the Company's condensed consolidated balance sheets.

A reconciliation of the restructuring charges and related payments for the nine months ended September 30, 2023 is as follows:


	Nine Months Ended September 30, 2023
Restructuring liability as of December 31, 2022	$	—
Restructuring costs expensed during the period		3,206
Non-cash impact of stock-based compensation		(195	)
Cash payments of restructuring liabilities, net		(3,011	)
Restructuring liability as of September 30, 2023	$	—

Stock-Based Compensation - Summary of restricted common stock awards activity (Detail) - Restricted Stock Units (RSUs) [Member]	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Share Based Arrangements To Obtain Goods And Services [Line Items]
Number of optionsOutstanding as of January 1, 2023 \| shares	0
Number of Options, Granted \| shares	3,251,815
Number of options,Vested \| shares	0
Number of options,Forfeited \| shares	106,880
Number of options Outstanding as of September 30, 2023 \| shares	3,144,935
Weighted Average Grant Date Fair Valueat January 1, 2023 \| $ / shares	$ 0
Weighted Average Grant Date Fair Value, Granted \| $ / shares	1.18
Weighted Average Grant Date Fair Value, Vested \| $ / shares	0
Weighted Average Grant Date Fair Value, Forfeited \| $ / shares	1.18
Weighted Average Grant Date Fair Value at September 30, 2023 \| $ / shares	$ 1.18

Fair Value Measurement (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Summary of Fair Value Measurement on Recurring Basis


	Fair Value Measurements
	As of September 30, 2023
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Cash & Money market funds	$	650	$	—	$	—	$	650
Investment in securities at fair value:
U.S. Treasuries		—		85,122		—		85,122
Commercial Paper		—		—		—		—
Corporate Notes/Bonds		—		4,925		—		4,925
U.S. Government Agencies		—		42,456		—		42,456
Other investment at fair value		70,787		—		724		71,511
Convertible notes receivable - related party		—		—		1,519		1,519
	$	71,437	$	132,502	$	2,243	$	206,183
Liabilities:
Contingent consideration liability - related parties	$	—	$	—	$	900	$	900
	$	—	$	—	$	900	$	900


	Fair Value Measurements
	As of December 31, 2022
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Cash & Money market funds	$	72,334	$	—	$	—	$	72,334
Investment in securities at fair value:
U.S. Treasuries		—		—		—		—
Commercial Paper		—		5,958		—		5,958
Corporate Notes/Bonds		—		17,719		—		17,719
U.S. Government Agencies		—		58,819		—		58,819
Other investment at fair value		—		—		—		—
	$	72,334	$	82,496	$	—	$	154,830
Liabilities:
Contingent consideration liability - related parties	$	—	$	—	$	953	$	953
	$	—	$	—	$	953	$	953

Summary of Fair Value Measurement Inputs and Valuation Techniques

The fair value of the Perception contingent consideration liability - related parties was calculated using the following significant unobservable inputs:


		September 30, 2023	December 31, 2022

Valuation Technique	Significant Unobservable Inputs	Input Range	Input Range
Discounted cash flow	Milestone contingent consideration:
	Discount rate	14.9%	13.1%
	Probability of the milestone	28.0%	10.0% - 21.0%
Discounted cash flow with SBM	Royalty contingent consideration:
	Discount rate for royalties	14.2% - 15.7%	20.0% - 21.1%
	Discount rate for royalties on milestones	14.2% - 15.7%	12.3% - 13.4%
	Probability of success rate	13.4% - 28.0%	10.1% - 21.0%

Summary of Fair Value Measurement on Recurring Basis, Unobservable Input Reconciliation


	Convertible notes receivable - related party		IntelGenx Warrants(1)		Contingent Consideration Liability - Related Parties
Balance as of December 31, 2022	$	—	$	—	$	953
Initial fair value of instrument		—		—		—
Change in fair value		—		—		(35	)
Extinguishment of liability		—		—		—
Balance as of March 31, 2023	$	—	$	—	$	918
Initial fair value of instrument						—
Change in fair value						(76	)
Extinguishment of liability						—
Balance as of June 30, 2023	$	—	$	—	$	842
Initial fair value of instrument		1,497		724		—
Change in fair value, including interest		22		—		58
Extinguishment of liability		—		—		—
Balance as of September 30, 2023	$	1,519	$	724	$	900

(1) Inclusive of IntelGenx Initial Warrants, Additional Unit Warrants and 2023 Initial Warrants.


	Contingent Consideration Liability - Related Parties
Balance as of December 31, 2021	$	2,483
Initial fair value of instrument		—
Change in fair value		—
Extinguishment of liability		(50	)
Balance as of March 31, 2022	$	2,433
Initial fair value of instrument		—
Change in fair value		(95	)
Extinguishment of liability		—
Balance as of June 30, 2022	$	2,338
Initial fair value of instrument		—
Change in fair value		(430	)
Extinguishment of liability		—
Balance as of September 30, 2022	$	1,908

Initial Warrants [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Summary of Fair Value Measurement Inputs and Valuation Techniques

The following table summarizes significant unobservable inputs that are included in the valuation of the Initial Warrants as of September 30, 2023 and as of December 31, 2022:


	September 30, 2023			December 31, 2022
Value of Underlying	$	0.13		$	0.19
Expected Volatility		105	%		100	%

The following table summarizes significant unobservable inputs that are included in the valuation of the 2023 Initial Warrants as of September 30, 2023:


	September 30, 2023
Value of Underlying	$	0.13
Expected Volatility		105	%

Additional Warrants [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Summary of Fair Value Measurement Inputs and Valuation Techniques

The following table summarizes significant unobservable inputs that are included in the valuation of the Additional Units Warrant as of September 30, 2023 and as of December 31, 2022:


	September 30, 2023			December 31, 2022
Value of Underlying	$	0.13		$	0.19
Expected Volatility		105	%		100	%

Condensed Consolidated Balance Sheets (Parenthetical)	Sep. 30, 2023 € / shares shares	Sep. 30, 2023 $ / shares shares	Dec. 31, 2022 € / shares shares	Dec. 31, 2022 $ / shares shares
Common Stock, Par or Stated Value Per Share \| (per share)	€ 0.1	$ 0.12	€ 0.1	$ 0.12
Common stock, shares authorized	750,000,000	750,000,000	750,000,000	750,000,000
Common stock, shares, issued	166,010,476	166,010,476	165,935,914	165,935,914
Common stock, shares, outstanding	166,010,476	166,010,476	165,935,914	165,935,914

Related Party Transactions

9 Months Ended

Sep. 30, 2023

Related Party Transactions

18. Related Party Transactions

atai Formation

In connection with the formation of atai in 2018, the Company entered into a series of transactions with its shareholders, Apeiron, Galaxy Group Investments LLC. (“Galaxy”) and HCS Beteiligungsgesellschaft mbH (“HCS”) whereby these shareholders contributed their investments in COMPASS, Innoplexus and Juvenescence to the Company in exchange for the Company's common stock of equivalent value. Apeiron is the family office of the Company’s co-founder who owns 20.4% and 19.7% of the outstanding common stock in the Company as of September 30, 2023 and December 31, 2022, respectively. Galaxy is a NYC-based multi-strategy investment firm that owns 6.5% and 6.5% of the outstanding common stock in the Company as of September 30, 2023 and December 31, 2022, respectively.

Directed Share Program

In connection with ATAI’s initial public offering, the underwriters reserved 27% of the common shares for sale at the initial offering price to the Company’s managing directors, supervisory directors and certain other parties. Apeiron participated in the program and purchased $10.5 million common shares.

Consulting Agreement with Mr. Angermayer

In January 2021, the Company entered into a consulting agreement, (the “Consulting Agreement”), with Mr. Angermayer, one of the Company’s co-founders and supervisory director. Apeiron is the family office and merchant banking business of Mr. Angermayer. Pursuant to the Consulting Agreement, Mr. Angermayer agreed to render services to the Company on business and financing strategies in exchange for 624,000 shares under the 2020 Incentive Plan upon achievement of certain performance targets. The Consulting Agreement expires on March 31, 2024.

As a result of the Consulting Agreement, for the three months ended September 30, 2023 and 2022, the Company recorded $0.2 million and $0.2 million, respectively, of stock-based compensation included in general and administrative expense in its condensed consolidated statements of operations. Additionally, as a result of the Consulting Agreement, for the nine months ended September 30, 2023 and 2022, the Company recorded $0.6 million and $0.6 million, respectively, of stock-based compensation included in general and administrative expense in its condensed consolidated statements of operations.

For the three months ended September 30, 2023 and 2022, the Company recorded $0.1 million and $0.2 million, respectively, of stock-based compensation included in general and administrative expense in its condensed consolidated statements of operations related to Mr. Angermayer's service as Chairman of the supervisory board. For the nine months ended September 30, 2023 and 2022, the Company recorded $0.4 million and $0.5 million, respectively, of stock-based compensation included in general and administrative expense in its condensed consolidated statements of operations related to Mr. Angermayer's service as Chairman of the supervisory board.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-6

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(g)(3))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(c))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(e))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//850/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-6

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483326/850-10-50-1

+ Details

Leases - Schedule of future minimum commitments maturity operating leases (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Leases [Abstract]
2023 (excluding nine months ended September 30, 2023)	$ 122
2024	399
2025	355
2026	355
2027	355
2028	118
Total lease payments	1,704
Less: Imputed interest	(401)
Present value of lease liabilities	$ 1,303

Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2023

Accrued Liabilities, Current [Abstract]

Summary of accrued liabilities

Accrued liabilities consist of the following (in thousands):


	September 30, 2023		December 31, 2022
Accrued accounting, legal, and other professional fees	$	3,494	$	3,566
Accrued external research and development expenses		3,964		5,550
Accrued payroll		4,201		5,260
Taxes payable		887		2,224
Other liabilities		463		706
Total	$	13,008	$	17,306

Income Taxes

9 Months Ended

Sep. 30, 2023

Income Tax Disclosure [Abstract]

Income Taxes

14. Income Taxes

The Company records its quarterly income tax expense by utilizing an estimated annual effective tax rate applied to its period to date earnings as adjusted for any discrete items arising during the quarter. The tax effect for discrete items are recorded in the period in which they occur. The Company recorded $0.2 million and $0.1 million of income tax expense for the three months ended September 30, 2023 and 2022 respectively. The Company recorded $0.6 million and $0.2 million of income tax expense for the nine months ended September 30, 2023 and 2022 respectively. The income tax expense during these periods was primarily driven by current tax on earnings of subsidiaries in Australia, the United States, and the United Kingdom. The primary difference between the effective tax rate and the statutory tax rate relates to the income tax treatment of stock compensation expense, which impacts the current and overall tax expense due to the applicable valuation allowance. The Company continues to maintain a full valuation allowance against its deferred tax assets.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480990/946-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//740/tableOfContent

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-14

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-21

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 270
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482526/740-270-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-17

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.5.Q1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482603/740-30-50-2

+ Details

Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Number of options outstanding, including both vested and non-vested options.	18,750,486		18,750,486
Other Subsidiaries Equity Plan
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized stock based compensation compensation	$ 0.2		$ 0.2
Expected weighted average period			8 months 12 days
Share based compensation expenses	0.1	$ 0.1	$ 0.3	$ 0.6
Restricted Stock [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized stock based compensation compensation	2.7		$ 2.7
Expected weighted average period			1 year 5 months 12 days
Fair Value Of Restricted Stock			$ 0.0
Share based compensation expenses	$ 0.5	0.0	$ 1.0	0.0
Specified Performance Based Vesting [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share based payment arrangement, Options expected to vest outstanding	100,000		100,000
HSOP Plan[Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Shares reserved for future issuance	257,419		257,419
Unrecognized stock based compensation compensation	$ 0.6		$ 0.6
Expected weighted average period			1 month 6 days
Share based compensation expenses	0.7	1.1	$ 2.5	3.7
Two Thousand And Twenty Incentive Plan [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Unrecognized stock based compensation compensation	43.9		$ 43.9
Expected weighted average period			2 years 1 month 6 days
Share based compensation expenses	$ 6.9	$ 9.3	$ 21.6	$ 26.0
Number of options outstanding	0		0
Two Thousand And Twenty Incentive Plan [Member] \| Share-based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Weighted average grant-date fair value of options granted			$ 0.97
Two Thousand And Twenty One Incentive Award Plan [Member]
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Shares reserved for future issuance	32,421,132		32,421,132

Basis of Presentation and Summary of Significant Accounting Policies - Schedule of fair value of our available-for-sale debt securities portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounting Policies [Line Items]
Fair value of available-for-sale debt securities	$ 133,153	$ 154,830
Money Market Funds [Member]
Accounting Policies [Line Items]
Fair value of available-for-sale debt securities	650	72,334
U.S. Treasuries [Member]
Accounting Policies [Line Items]
Fair value of available-for-sale debt securities	85,122	0
Commercial Paper [Member]
Accounting Policies [Line Items]
Fair value of available-for-sale debt securities	0	5,958
U.S. Government Agencies [Member]
Accounting Policies [Line Items]
Fair value of available-for-sale debt securities	42,456	58,819
Corporate Notes/Bonds [Member]
Accounting Policies [Line Items]
Fair value of available-for-sale debt securities	$ 4,925	$ 17,719

Defined Contribution Plan

9 Months Ended

Sep. 30, 2023

Retirement Benefits [Abstract]

Defined Contribution Plan

19. Defined Contribution Plan

The Company has a defined contribution retirement savings plan under Section 401(k) of the Internal Revenue Code. This plan allows eligible employees to defer a portion of their annual compensation. Employees may make contributions by having the Company withhold a percentage of their salary up to the Internal Revenue Service annual limit. The Company recognized $0.1 million and $0.1 million of related compensation expense for the three months ended September 30, 2023 and 2022. The Company recognized $0.4 million and $0.4 million of related compensation expense for the nine months ended September 30, 2023 and 2022.

Debt - Summary of Convertible Promissory Notes (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total	$ 410	$ 415
Convertible Notes Issued in October 2020 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 410	$ 415

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482900/835-30-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(f))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C

Reference 7: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69E
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69E

Reference 8: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69F
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481568/470-20-55-69F

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 11: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1E

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1F
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1F

Reference 25: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481139/470-20-50-1I

+ Details

Prepaid Expenses and Other Current Assets

9 Months Ended

Sep. 30, 2023

Prepaid Expense and Other Assets, Current [Abstract]

Prepaid expenses and other current assets

8. Prepaid Expenses and Other Current Assets

Prepaid expenses consist of the following (in thousands):


	September 30, 2023		December 31, 2022
Prepaid insurance	$	2,131	$	2,034
Prepaid research and development related expenses		2,564		4,626
Tax receivables		1,497		5,631
Other		638		1,745
Total	$	6,831	$	14,036

Stock-Based Compensation

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

13. Stock-Based Compensation

atai Equity Incentive Plans

The Company has options and restricted stock units (“RSUs”) outstanding under various equity incentive plans, including the 2020 Incentive Plan, 2021 Incentive Plan, and HSOP Plan, which are further described in Note 12 of the Company’s audited consolidated financial statements included in the Company’s Annual Report on Form 10-K filed with the SEC on March 24, 2023.

As of September 30, 2023, there were no shares available for future grants under the 2020 Incentive Plan and any shares subject to outstanding options originally granted under the 2020 Equity Incentive Plan that terminate, expire or lapse for any reason without the delivery of shares to the holder thereof shall become available for issuance pursuant to the atai Life Sciences 2021 Incentive Award Plan.

Shares that are expired, terminated, surrendered, or canceled without having been fully exercised will be available for future awards. As of September 30, 2023, 32,421,132 shares were available for future grants under the 2021 Incentive Plan.

As of September 30, 2023, 257,419 HSOP Options were available for future grants under the HSOP Plan.

Stock Option activity under 2020 Incentive Plan and 2021 Incentive Plan

The stock options outstanding noted below consist primarily of both service and performance-based options to purchase common stock. These stock options have a five-year or ten-year contractual term. These awards are subject to the risk of forfeiture until vested by virtue of continued employment or service to the Company.

The following is a summary of stock option activity from December 31, 2022 to September 30, 2023:


	Number of Options				Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2022		34,880,604			$	5.98		5.71	$	10,647
Granted		9,999,628		(1)		1.30		—		—
Exercised		(74,562	)			2.44		—		—
Cancelled or forfeited		(4,404,580	)			6.81		—		—
Outstanding as of September 30, 2023		40,401,090		(2)	$	4.71		5.88	$	4,801
Options exercisable as of September 30, 2023		21,650,604			$	5.32		3.88	$	3,901

(1)

Includes (a) 9,409,928 stock options that will vest over a four-year service period (b) 452,700 stock options that will vest over a one-year service period and (c) 137,000 stock options that will vest over a two-year service period.

(2)

The 18,750,486 outstanding unvested stock options includes (a) 16,969,592 stock options that will continue to vest over a one to four-year service period, (b) 1,159,894 that will continue to vest over a three to four-year service period and upon the satisfaction of specified performance-based vesting conditions, (c) 137,000 stock options that will continue to vest over a two-year service period (d) 100,000 stock options that will continue to vest over a two-year service period and upon the satisfaction of specified market-based conditions tied to the price of the Company's publicly traded shares and (e) 384,000 stock options that will continue to vest over a one-year service period.

The weighted-average grant-date fair value of options granted during the nine months ended September 30, 2023 was $0.97.

The Company estimates the fair value of each stock option using the Black-Scholes option-pricing model on the date of grant. During the nine months ended September 30, 2023, the assumptions used in the Black-Scholes option pricing model were as follows:


	September 30,
	2023	2022
Weighted average expected term in years	6.15	6.06
Weighted average expected stock price volatility	87.5%	71.5%
Risk-free interest rate	3.50% - 4.09%	1.46% - 3.38%
Expected dividend yield	0%	0%

For the three months ended September 30, 2023 and 2022, the Company recorded stock-based compensation expense of $6.9 million and $9.3 million, respectively. For the nine months ended September 30, 2023 and 2022, the Company recorded stock-based compensation expense of $21.6 million and $26.0 million, respectively.

As of September 30, 2023, total unrecognized compensation cost related to the unvested stock options was $43.9 million, which is expected to be recognized over a weighted average period of 2.1 years.

Stock Option activity under HSOP Plan

The HSOP Options outstanding noted below consist of service and performance-based options to request the distribution of HSOP Shares. These HSOP Options have a fifteen-year contractual term. These HSOP Options vest over a three to four-year service period. These awards are subject to the risk of forfeiture until vested by virtue of continued employment or service to the Company.

The following is a summary of stock option activity from December 31, 2022 to September 30, 2023:


	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2022		6,921,829		6.64		13.01	$	—
Granted		—		—		—		—
Exercised		—		—		—		—
Cancelled or forfeited		—		—		—		—
Outstanding as of September 30, 2023		6,921,829	$	6.64		12.26	$	—
Options exercisable as of September 30, 2023		6,625,439	$	6.64		12.26	$	—

For the three months ended September 30, 2023 and 2022, the Company recorded stock-based compensation expense of $0.7 million and $1.1 million, respectively. For the nine months ended September 30, 2023 and 2022, the Company recorded stock-based compensation expense of $2.5 million and $3.7 million, respectively.

As of September 30, 2023, total unrecognized compensation cost related to the unvested stock-based awards was $0.6 million which is expected to be recognized over a weighted average period of 0.1 years.

Restricted Stock Unit activity under the 2021 Incentive Plan

The restricted stock units noted below consist of service-based awards vesting over a two-year period, subject to the risk of forfeiture until vested by virtue of continued employment or service to the Company. The Company reflects restricted stock units as issued and outstanding common stock when vested and the shares have been delivered to the individual.

The following is a summary of restricted stock unit activity from December 31, 2022 to September 30, 2023:


	Restricted Stock Units		Weighted Average Grant Date Fair Value
Unvested at January 1, 2023		—	$	—
Granted		3,251,815		1.18
Vested		—		—
Forfeited		106,880		1.18
Unvested at September 30, 2023		3,144,935	$	1.18

For the three months ended September 30, 2023 and 2022, the Company recorded stock-based compensation expense of $0.5 million and $0, respectively. For the nine months ended September 30, 2023 and 2022, the Company recorded stock-based compensation expense of $1.0 million and $0, respectively.

The total fair value of restricted stock units vested during the nine months ended September 30, 2023 was $0. As of September 30, 2023, total unrecognized compensation cost related to the unvested stock-based awards was $2.7 million, which is expected to be recognized over a weighted average period of 1.45 years.

Subsidiary Equity Incentive Plans

Certain controlled subsidiaries of the Company adopted their own equity incentive plans (each, an “EIP”). Each EIP is generally structured so that the applicable subsidiary, and its affiliates’ employees, directors, officers and consultants are eligible to receive non-qualified and incentive stock options and restricted stock unit awards under their respective EIP. Standard option grants have time-based vesting requirements, generally vesting over a period of four years with a contractual term of ten years. Such time-based stock options use the Black-Scholes option pricing model to determine grant date fair value.

For the three months ended September 30, 2023 and 2022, the Company recorded share-based compensation expense of $0.1 million and $0.1 million, respectively, in relation to subsidiary EIPs. For the nine months ended September 30, 2023 and 2022, the Company recorded share-based compensation expense of $0.3 million and $0.6 million, respectively, in relation to subsidiary EIPs. As of September 30, 2023, there was $0.2 million of total unrecognized stock-based compensation expense related to unvested EIP awards to employees and non-employee directors expected to be recognized over a weighted-average period of approximately 0.7 years.

Stock-Based Compensation

Stock-based compensation expense is allocated to either research and development or general and administrative expense on the condensed consolidated statements of operations based on the cost center to which the option holder belongs.

The following table summarizes the total stock-based compensation expense by function for the three months ended September 30, 2023, which includes expense related to stock options and restricted stock unit awards (in thousands):


	Three Months Ended September 30, 2023
	Atai 2020 and 2021 Incentive Plans		Atai 2020 HSOP Partnership		Other Subsidiary Equity Plans		Total
Research and development	$	3,285	$	—	$	107	$	3,392
General and administrative		4,110		744		7		4,861
Total share based compensation expense	$	7,395	$	744	$	114	$	8,253

The following table summarizes the total stock-based compensation expense by function for the three months ended September 30, 2022, which includes expense related to stock options and restricted stock unit awards (in thousands):


	Three Months Ended September 30, 2022
	Atai 2020 and 2021 Incentive Plans		Atai 2020 HSOP Partnership		Other Subsidiary Equity Plans		Total
Research and development	$	3,934	$	—	$	123	$	4,057
General and administrative		5,324		1,124		10		6,458
Total share based compensation expense	$	9,258	$	1,124	$	133	$	10,515

The following table summarizes the total stock-based compensation expense by function for the nine months ended September 30, 2023, which includes expense related to stock options and restricted stock unit awards (in thousands):


	Nine Months Ended September 30, 2023
	Atai 2020 and 2021 Incentive Plans		Atai 2020 HSOP Partnership		Other Subsidiary Equity Plans		Total
Research and development	$	9,866	$	—	$	320	$	10,186
General and administrative		12,947		2,512		33		15,492
Total share based compensation expense	$	22,813	$	2,512	$	352	$	25,677

The following table summarizes the total stock-based compensation expense by function for the nine months ended September 30, 2022, which includes expense related to stock options and restricted stock unit awards (in thousands):


	Nine Months Ended September 30, 2022
	Atai 2020 and 2021 Incentive Plans		Atai 2020 HSOP Partnership		Other Subsidiary Equity Plans		Total
Research and development	$	11,221	$	—	$	418	$	11,639
General and administrative		14,783		3,651		162		18,596
Total share based compensation expense	$	26,004	$	3,651	$	580	$	30,235

Fair Value Measurement - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022	May 14, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of the contingent milestone and royalty liabilities	$ 0.1	$ 0.1
Fair value of common stock by applying discount for lack of marketability	5.00%	5.00%
IntelGenx [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
discount rate	5125.00%
probability of Shareholder Approvals	8500.00%
fair value	$ 1.5
Volatility of shareholder	105.00%
TryptageniX Inc. [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of the contingent milestone and royalty liabilities	$ 0.2	$ 0.2
Common Stock [Member] \| IntelGenx [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of warrant liability	0.7
Investment measured at fair value as per fair value option			$ 3.0
Warrant [Member] \| IntelGenx [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment measured at fair value as per fair value option			1.2
Additional Warrants [Member] \| IntelGenx [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment measured at fair value as per fair value option			$ 8.2
Royalty Liabilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of the contingent milestone and royalty liabilities	$ 0.6	$ 0.6

Dispositions - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Nov. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	May 31, 2021	Mar. 31, 2021	Oct. 31, 2020	Dec. 31, 2019
Business Combinations [Line Items]
Non-operating income expense		$ 70,681	$ 5,289	$ 70,944	$ 11,361
Neuronasal, Inc. [Member]
Business Combinations [Line Items]
Ownership %	56.50%
Non-operating income expense						$ 1,500
Impairment of loan receivable						$ 900
Neuronasal, Inc. [Member] \| Common Stock [Member]
Business Combinations [Line Items]
Business acquisition, shares, cash contribution								$ 500	$ 300
Neuronasal, Inc. [Member] \| Preferred Stock [Member]
Business Combinations [Line Items]
Business acquisition, shares, cash contribution							$ 1,000		$ 800	$ 500

Dispositions

9 Months Ended

Sep. 30, 2023

Business Combinations [Abstract]

Dispositions

3. Dispositions

2022 Dispositions

Neuronasal, Inc.

In October 2020 and March 2021, the Company invested in Neuronasal, Inc. (“Neuronasal”) common stock for a cash contribution of $0.3 million and $0.5 million, respectively. In December 2019, October 2020 and May 2021, the Company invested in Neuronasal preferred stock for a cash contribution of $0.5 million, $0.8 million and $1.0 million, respectively. Upon the closing of the purchase on May 17, 2021, the Company obtained a controlling financial interest in Neuronasal. The Company derecognized its other investments in Neuronasal and began to consolidate the operations of Neuronasal into its consolidated financial statements.

In November 2022, the Company finalized and entered into a Redemption, Termination and Release Agreement (“Termination Agreement”) with Neuronasal through which atai disposed of its equity interests and residual SPA funding obligations. Pursuant to the Neuronasal Termination Agreement, the Company transferred all of its approximately 56.5% equity interest in Neuronasal in exchange for the redemption consideration in the form of certain warrants. The Termination Agreement entitles the Company to purchase common stock in Neuronasal upon the occurrence of certain contingencies, such as an initial public offering, a qualified financing event, or certain clinical studies. The Company has no further obligations to fund Neuronasal.

As a result of the disposition, the Company ceased having controlling financial interest in Neuronasal and the Company deconsolidated Neuronasal in November 2022 because it determined that it no longer was the primary beneficiary of Neuronsasal as it no longer had the power to direct the significant activities of Neuronasal. Upon the effective termination date, the Company derecognized all of Neuronasal's assets and liabilities from the Company's balance sheet, and recognized a gain of $1.5 million, which was recognized as a component of other income (expense), net in the Company's consolidated statements of operations for the year ended December 31, 2022. The Company determined that the value of the warrants received in connection with the Termination Agreement was de minimis as of the termination date and as of September 30, 2023. In connection with the deconsolidation of Neuronasal, the Company concluded that a loan loss had been incurred and the loan assets were impaired accordingly. The Company recognized an impairment of loan receivable of $0.9 million for the year ended December 31, 2022.

The Company concluded that the decision to deconsolidate Neuronasal, which was based on clinical data that did not meet expectations, did not represent a significant strategic shift. Therefore, the Company did not present the results of Neuronasal prior to deconsolidation as discontinued operations in its consolidated statements of operations for the year ended December 31, 2022.

Related Party Transactions - Additional Information (Detail) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Mar. 31, 2021 shares	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 € / shares	Sep. 30, 2023 USD ($) $ / shares	Dec. 31, 2022 € / shares	Dec. 31, 2022 USD ($) $ / shares
Related Party Transaction [Line Items]
Principal amount							$ 15,000		$ 15,000
Issuance of common stock shares par value \| (per share)						€ 0.1	$ 0.12	€ 0.1	$ 0.12
Percentage of common stock reserved				27.00%
General and administrative expense		$ 13,631	$ 19,419	$ 44,159	$ 54,623
General and Administrative Expense [Member]
Related Party Transaction [Line Items]
stock-based compensation		200	200	600	600
Founder [Member] \| Atai Formation [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage							20.40%		19.70%
Galaxy NYC Based Multi Strategy Investment Firm [Member] \| Atai Formation [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage							6.50%		6.50%
Apeiron [Member] \| Common Stock [Member]
Related Party Transaction [Line Items]
Issuance of common shares, net of issuance costs				10,500
Stock issued during period, Value				10,500
Mr Angermayer [Member] \| Consulting Agreement [Member]
Related Party Transaction [Line Items]
General and administrative expense		$ 100	$ 200	$ 400	$ 500
Mr Angermayer [Member] \| Consulting Agreement [Member] \| Two Thousand And Twenty Incentive Plan [Member]
Related Party Transaction [Line Items]
Stock issued during period, share based payments \| shares	624,000

Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Summary of Share-based Payment Arrangement, Option, Activity

The following is a summary of stock option activity from December 31, 2022 to September 30, 2023:


	Number of Options				Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2022		34,880,604			$	5.98		5.71	$	10,647
Granted		9,999,628		(1)		1.30		—		—
Exercised		(74,562	)			2.44		—		—
Cancelled or forfeited		(4,404,580	)			6.81		—		—
Outstanding as of September 30, 2023		40,401,090		(2)	$	4.71		5.88	$	4,801
Options exercisable as of September 30, 2023		21,650,604			$	5.32		3.88	$	3,901

(1)

(2)

Summary of Employee Stock Ownership Plan (ESOP) Disclosures

The following is a summary of stock option activity from December 31, 2022 to September 30, 2023:


	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
Outstanding as of December 31, 2022		6,921,829		6.64		13.01	$	—
Granted		—		—		—		—
Exercised		—		—		—		—
Cancelled or forfeited		—		—		—		—
Outstanding as of September 30, 2023		6,921,829	$	6.64		12.26	$	—
Options exercisable as of September 30, 2023		6,625,439	$	6.64		12.26	$	—

Shedule of Restricted Stock Unit Activity

The following is a summary of restricted stock unit activity from December 31, 2022 to September 30, 2023:


	Restricted Stock Units		Weighted Average Grant Date Fair Value
Unvested at January 1, 2023		—	$	—
Granted		3,251,815		1.18
Vested		—		—
Forfeited		106,880		1.18
Unvested at September 30, 2023		3,144,935	$	1.18

Share-based Payment Arrangement, Expensed and Capitalized, Amount


	Three Months Ended September 30, 2023
	Atai 2020 and 2021 Incentive Plans		Atai 2020 HSOP Partnership		Other Subsidiary Equity Plans		Total
Research and development	$	3,285	$	—	$	107	$	3,392
General and administrative		4,110		744		7		4,861
Total share based compensation expense	$	7,395	$	744	$	114	$	8,253


	Three Months Ended September 30, 2022
	Atai 2020 and 2021 Incentive Plans		Atai 2020 HSOP Partnership		Other Subsidiary Equity Plans		Total
Research and development	$	3,934	$	—	$	123	$	4,057
General and administrative		5,324		1,124		10		6,458
Total share based compensation expense	$	9,258	$	1,124	$	133	$	10,515


	Nine Months Ended September 30, 2023
	Atai 2020 and 2021 Incentive Plans		Atai 2020 HSOP Partnership		Other Subsidiary Equity Plans		Total
Research and development	$	9,866	$	—	$	320	$	10,186
General and administrative		12,947		2,512		33		15,492
Total share based compensation expense	$	22,813	$	2,512	$	352	$	25,677


	Nine Months Ended September 30, 2022
	Atai 2020 and 2021 Incentive Plans		Atai 2020 HSOP Partnership		Other Subsidiary Equity Plans		Total
Research and development	$	11,221	$	—	$	418	$	11,639
General and administrative		14,783		3,651		162		18,596
Total share based compensation expense	$	26,004	$	3,651	$	580	$	30,235

Two Thousand And Twenty Incentive Plan [Member]

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions


	September 30,
	2023	2022
Weighted average expected term in years	6.15	6.06
Weighted average expected stock price volatility	87.5%	71.5%
Risk-free interest rate	3.50% - 4.09%	1.46% - 3.38%
Expected dividend yield	0%	0%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Equity Method Investments and Other Investments - Additional information (Detail) - USD ($)
$ / shares in Units, $ in Thousands

1 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

Aug. 30, 2023

Sep. 30, 2022

May 31, 2021

May 15, 2021

Apr. 13, 2021

Nov. 30, 2020

Feb. 28, 2021

Nov. 30, 2020

Aug. 31, 2019

Sep. 30, 2023

Sep. 30, 2022

Sep. 30, 2023

Sep. 30, 2022

Dec. 31, 2022

Dec. 31, 2019

Jun. 30, 2023

Mar. 31, 2023

Jun. 30, 2022

Mar. 31, 2022

Dec. 31, 2021

Sep. 30, 2021

Dec. 31, 2020

Cash and Cash Equivalents [Line Items]

Net income (loss)

$ 43,371

$ (35,701)

$ (24,753)

$ (110,768)

Equity method investment, Investee shares sold

$ 9,600

Equity method investment, Shares transaction date

Dec. 31, 2026

Secured debt

$ 2,300

$ 2,400

Equity Method Investments

Losses from investments in equity method investees, net of tax

(238)

(2,432)

(3,199)

(14,680)

Change in fair value of other investments held at fair value

(69,014)

Unrealized loss on other investments held at fair value

(69,014)

Other Investments held at fair value

10,300

$ 7,200

Compass Pathways Plc [Member]

Cash and Cash Equivalents [Line Items]

Net income (loss)

$ 600

$ 10,100

Market value, ownership

70,800

Change in fair value of other investments held at fair value

69,000

Unrealized loss on other investments held at fair value

69,000

GABA Inc [Member]

Cash and Cash Equivalents [Line Items]

Percentage of voting interest acquired

50.00%

IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Change in fair value of other investments held at fair value

Investment measured at fair value as per fair value option

12,300

Unrealized loss on other investments held at fair value

$ 0

Common Stock [Member]

Cash and Cash Equivalents [Line Items]

Shares, Outstanding

165,875,307

166,010,476

165,875,307

166,010,476

165,875,307

165,935,914

166,010,476

161,727,785

160,719,828

160,677,001

Common Stock [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Share price

$ 0.185

Investment measured at fair value as per fair value option

$ 3,000

Warrant [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Exercise price, warrants

$ 0.26

Investment measured at fair value as per fair value option

$ 1,200

Unit [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Share price

$ 0.185

Exercise price, warrants

$ 0.26

Investment measured at fair value as per fair value option

$ 8,200

Juvenescence Limited [Member]

Cash and Cash Equivalents [Line Items]

Other income

$ 100

Securities Purchase Agreement [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Percentage of voting interest acquired

25.00%

Number of years determining units purchase

3 years

Percentage Of Premium To Market Price

20.00%

Percentage of the volume weighted average price of the common share

20.00%

Securities Purchase Agreement [Member] | IntelGenx [Member] | Tranche 1

Cash and Cash Equivalents [Line Items]

Number of share purchased during period

74,600,000

Business acquisition, Share price

$ 0.331

Number of months determining unit price

12 months

Securities Purchase Agreement [Member] | IntelGenx [Member] | Tranche 2

Cash and Cash Equivalents [Line Items]

Number of share purchased during period

74,600,000

Business acquisition, Share price

0.5

$ 0.5

Number of months determining unit price

12 months

Securities Purchase Agreement [Member] | IntelGenx [Member] | Tranche 3

Cash and Cash Equivalents [Line Items]

Number of share purchased during period

44,000,000

Business acquisition, Share price

$ 0.75

Number of months determining unit price

12 months

Securities Purchase Agreement [Member] | Common Stock [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Common shares

$ 12,300

Securities Purchase Agreement [Member] | Warrant [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Business acquisition, Share price

$ 0.35

Number of years determining units purchase

3 years

Common shares

$ 12,300

Subscription Agreement [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Other Investments held at fair value

$ 700

Subscription Agreement [Member] | IntelGenx [Member] | 2023 Warrant [Member]

Cash and Cash Equivalents [Line Items]

Equity method investment, Shares transaction date

Aug. 31, 2026

Subscription Agreement [Member] | Convertible Notes Receivable [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Interes rate

12.00%

Initial conversion price

$ 0.185

Investment measured at fair value as per fair value option

$ 1,000

Subscription Agreement [Member] | Convertible debenture [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Secured debt

$ 2,200

Convertible debenture units

2,220

Subscription Agreement [Member] | Convertible Promissory Notes [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Initial conversion price

$ 1,000

Subscription Agreement [Member] | Warrant [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Initial warrants

5,405

Subscription Agreement [Member] | Warrant [Member] | IntelGenx [Member] | 2023 Warrant [Member]

Cash and Cash Equivalents [Line Items]

Exercise price, warrants

$ 0.26

Initial warrants

5,405

Subscription Agreement [Member] | Unit [Member] | Convertible debenture [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Convertible debenture units

750

Conversion of units, debentures, Value

$ 750,000

Strategic Development Agreement [Member] | IntelGenx [Member]

Cash and Cash Equivalents [Line Items]

Percentage of the funds to be used for research and development purpose

20.00%

Credit received

$ 2,500

Research & development expense

$ 100

$ 300

Call Option [Member]

Cash and Cash Equivalents [Line Items]

Convertible debenture units

7,401

Call Option [Member] | Convertible Notes Receivable [Member]

Cash and Cash Equivalents [Line Items]

Initial conversion price

$ 1,000

Call Option [Member] | Common Stock [Member] | 2021 Purchase Right [Member]

Cash and Cash Equivalents [Line Items]

Shares, Outstanding

100,000,000

Investment owned number of shares

100,000,000

Call Option [Member] | Common Stock [Member] | Maximum [Member] | 2021 Purchase Right [Member]

Cash and Cash Equivalents [Line Items]

Shares, Outstanding

130,000,000

Call Option [Member] | Common Stock [Member] | Minimum [Member]

Cash and Cash Equivalents [Line Items]

Shares, Outstanding

100,000,000

Call Option [Member] | Common Stock [Member] | Minimum [Member] | 2021 Purchase Right [Member]

Cash and Cash Equivalents [Line Items]

Shares, Outstanding

100,000,000

Call Option [Member] | Common Stock [Member] | IntelGenx [Member] | Maximum [Member] | General Cap [Member]

Cash and Cash Equivalents [Line Items]

Convertible debenture units

43,664,524

Percentage of issued and outstanding shares of common stock

24.99%

Call Option [Member] | Common Stock [Member] | IntelGenx [Member] | Minimum [Member]

Cash and Cash Equivalents [Line Items]

Convertible debenture units

17,645,809

Percentage of issued and outstanding shares of common stock

9.99%

Call Option [Member] | Warrant [Member]

Cash and Cash Equivalents [Line Items]

Initial warrants

5,405

Innoplexus AG [Member]

Cash and Cash Equivalents [Line Items]

Equity Method Investment, Ownership Percentage

35.00%

Equity Method Investments

$ 0

Innoplexus AG [Member] | Innoplexus SPA [Member]

Cash and Cash Equivalents [Line Items]

Equity method investment, Investee shares sold

$ 2,400

Equity method investment, Proceeds

$ 22,300

COMPASS Pathways Plc Two [Member]

Cash and Cash Equivalents [Line Items]

Equity Method Investment, Ownership Percentage

15.50%

^[1]

15.50%

^[1]

22.40%

Equity Method Investments

$ 0

GABA Therapeutics Inc [Member]

Cash and Cash Equivalents [Line Items]

Equity Method Investment, Ownership Percentage

^[2]

7.50%

Equity Method Investments

$ 0

Losses from investments in equity method investees, net of tax

200

$ 1,800

3,200

$ 4,500

GABA Therapeutics Inc [Member] | Additional Shares [Member]

Cash and Cash Equivalents [Line Items]

Payments to acquire investments

$ 2,000

GABA Therapeutics Inc [Member] | Amended GABA PSPA | Preferred Stock [Member] | Series A Preferred Stock [Member]

Cash and Cash Equivalents [Line Items]

Equity Method Investment, Ownership Percentage

20.00%

Payments to acquire investments

600

$ 5,500

GABA Therapeutics Inc [Member] | Amended GABA PSPA | Common Stock [Member] | Series A Preferred Stock [Member]

Cash and Cash Equivalents [Line Items]

Equity Method Investments

$ 900

900

Payments to acquire investments

$ 600

$ 5,000

$ 10,000

GABA Therapeutics Inc [Member] | Amended GABA PSPA | Additional Shares [Member] | Series A Preferred Stock [Member]

Cash and Cash Equivalents [Line Items]

Equity Method Investments

$ 1,500

GABA Therapeutics Inc [Member] | Omnibus Amendment Agreement [Member]

Cash and Cash Equivalents [Line Items]

Payments to acquire investments

$ 1,800

DemeRx NB Options [Member] | Series A Preferred Stock [Member]

Cash and Cash Equivalents [Line Items]

Equity Method Investment, Ownership Percentage

20.00%

Payments to acquire investments

$ 1,000

Option to purchase additional shares value

$ 19,000

[1]	(1) The Company accounted for its investment in COMPASS Pathways plc under the equity method until August 18, 2023, the closing date of COMPASS Pathways plc's dilutive financing round described below in Other investments held at fair value.
[2]	(2) The Company is deemed to have significant influence over this entity through its total ownership interest in the entity’s equity, including the Company’s investment in the respective entity’s preferred stock, described below in Other Investments. The Company’s total ownership interest, considering both preferred and common stock is 54.7%.

Cover Page - shares	9 Months Ended
Cover Page - shares	Sep. 30, 2023	Nov. 06, 2023
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Trading Symbol	ATAI
Title of 12(b) Security	Common shares, par value €0.10 per share
Security Exchange Name	NASDAQ
Entity Registrant Name	ATAI Life Sciences N.V.
Entity Central Index Key	0001840904
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		166,010,476
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Securities Act File Number	001-40493
Entity Incorporation, State or Country Code	P7
Document Transition Report	false
Entity Address, Address Line One	ATAI Life Sciences N.V.
Entity Address, Address Line Two	Wallstraße 16, 10179
Entity Address, City or Town	Berlin
City Area Code	49 89
Local Phone Number	2153 9035
Entity Address, Country	DE
Entity Address, Postal Zip Code	00000
Entity Tax Identification Number	00-0000000

Leases - Schedule of supplemental cash flow information related to operating leases (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 304	$ 193
Right of Use Asset Obtained in Exchange for Operating Lease Liabilities	$ 1,356	$ 487

Basis of Presentation, Consolidation and Summary of Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2023

Accounting Policies [Abstract]

Basis of Presentation

Reclassifications

Consolidation

The Company's condensed consolidated financial statements include the accounts of atai and its subsidiaries. All intercompany balances and transactions have been eliminated in the consolidation.

Significant Accounting Policies

Use of Estimates

The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable. Actual results may differ from those estimates or assumptions.

Cash and Cash Equivalents

Investment Securities Portfolio

The following table sets forth the fair value of atai's available-for-sale securities portfolio at the dates indicated:


	Fair Value
	September 30, 2023		December 31, 2022
Money Market Funds	$	650	$	72,334
U.S. Treasuries		85,122		—
Commercial Paper		—		5,958
Corporate Notes/Bonds		4,925		17,719
U.S. Government Agencies		42,456		58,819
	$	133,153	$	154,830

Fair Value Measurements

Level 1—Observable inputs such as unadjusted, quoted prices in active markets for identical assets or liabilities at the measurement date;

Fair Value Option

Furthermore, as noted above the Company also elected the fair value option for its investment securities portfolio.

Emerging Growth Company Status

Recently Adopted Accounting Pronouncements

ASU 2016-02 Leases (Topic 842)

ASU 2016-13 Financial Instruments - Credit Losses

Net Income (Loss) Per Share - Summary of Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Basic EPS:
Net income (loss)	$ 43,371	$ (35,701)	$ (24,753)	$ (110,768)
Net income (loss) attributable to noncontrolling interests	(873)	(1,814)	(2,821)	(3,394)
Net income (loss) attributable to ATAI Life Sciences N.V. shareholders - basic (numerator)	$ 44,244	$ (33,887)	$ (21,932)	$ (107,374)
Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. Stockholders - basic (denominator)	155,792,490	156,607,468	155,793,601	154,713,922
Net income (loss) per share attributable to ATAI Life Sciences N.V. shareholders - basic	$ 0.28	$ (0.22)	$ (0.14)	$ (0.69)
Diluted EPS:
Net income (loss)	$ 43,371	$ (35,701)	$ (24,753)	$ (110,768)
Net Income (Loss) Attributable to Noncontrolling Interest	(873)	(1,814)	(2,821)	(3,394)
Net income (loss) attributable to ATAI Life Sciences N.V. shareholders - diluted (numerator)	$ 44,244	$ (33,887)	$ (21,932)	$ (107,374)
Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. Stockholders - diluted	177,565,973	156,607,468	155,793,601	154,713,922
Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. shareholders (denominator)	177,565,973	156,607,468	155,793,601	154,713,922
Net income (loss) per share attributable to ATAI Life Sciences N.V. stockholders - diluted	$ 0.25	$ (0.22)	$ (0.14)	$ (0.69)
Effect of dilutive securities:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			34,896,194	46,782,562
ATAI Life Sciences N.V. Shareholders [Member]
Basic EPS:
Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. Stockholders - basic (denominator)	155,792,490	156,607,468	155,793,601	154,713,922
Options to purchase Common Stock
Effect of dilutive securities:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			27,974,365	33,534,242
Options to purchase Common Stock \| ATAI Life Sciences N.V. Shareholders [Member]
Effect of dilutive securities:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	12,426,724	0	0	0
HSOP options to purchase common stock
Effect of dilutive securities:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			6,921,829	7,046,496
Unvested Restricted Stock Units [Member] \| ATAI Life Sciences N.V. Shareholders [Member]
Effect of dilutive securities:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3,144,935	0	0	0
2018 Convertible Promissory Notes - Related Parties (note 11)
Effect of dilutive securities:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			0	6,201,824
2018 Convertible Promissory Notes - Related Parties (note 11) \| ATAI Life Sciences N.V. Shareholders [Member]
Effect of dilutive securities:
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	6,201,824	0	0	0

Net Income (Loss) Per Share (Tables)

9 Months Ended

Sep. 30, 2023

Earnings Per Share [Abstract]

Schedule of Basis and Diluted Net Loss Per Share Attributable to ATAI Stockholders

Basic and diluted net loss per share attributable to atai stockholders were calculated as follows (in thousands, except share and per share data):


	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
Basic EPS
Numerator:
Net income (loss)	$	43,371		$	(35,701	)	$	(24,753	)	$	(110,768	)
Net income (loss) attributable to noncontrolling interests		(873	)		(1,814	)		(2,821	)		(3,394	)
Net income (loss) attributable to ATAI Life Sciences N.V. shareholders — basic (numerator)	$	44,244		$	(33,887	)	$	(21,932	)	$	(107,374	)

Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. Shareholders (denominator)		155,792,490			156,607,468			155,793,601			154,713,922
Net income (loss) per common share attributable to ATAI Life Sciences N.V. Shareholders - basic	$	0.28		$	(0.22	)	$	(0.14	)	$	(0.69	)
Diluted EPS
Net income (loss)	$	43,371		$	(35,701	)	$	(24,753	)	$	(110,768	)
Net income (loss) attributable to noncontrolling interests		(873	)		(1,814	)		(2,821	)		(3,394	)
Net income (loss) attributable to ATAI Life Sciences N.V. shareholders — diluted (numerator)	$	44,244		$	(33,887	)	$	(21,932	)	$	(107,374	)

Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. Shareholders		155,792,490			156,607,468			155,793,601			154,713,922
Effect of dilutive securities:
Options to purchase common stock		12,426,724			—			—			—
Unvested restricted stock units		3,144,935			—			—			—
2018 Convertible Promissory Note - Related Parties (note 11)		6,201,824			—			—			—
Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. shareholders (denominator)		177,565,973			156,607,468			155,793,601			154,713,922

Net income (loss) per common share attributable to ATAI Life Sciences N.V. shareholders — diluted	$	0.25		$	(0.22	)	$	(0.14	)	$	(0.69	)

Schedule of Computation of Diluted net Income (Loss) Per Share Attributable to Common Shareholders


	As of September 30,
	2023		2022
Options to purchase common stock		27,974,365		33,534,242
HSOP options to purchase common stock		6,921,829		7,046,496
2018 Convertible Promissory Notes - Related Parties (Note 11)		—		6,201,824
Unvested restricted stock units		—		—
		34,896,194		46,782,562

Corporate Restructuring (Additional Information) (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	Feb. 28, 2023	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Percentage Of Restructed Workforce	30.00%
Restructuring expense			$ 3,206
Restructuring Reserve		$ 0	0	$ 0
General and Administrative Expense [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		$ 1,800	1,400
Deferred Compensation, Share-Based Payments [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense			200
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense			$ 3,000

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Common Stock

9 Months Ended

Sep. 30, 2023

Stockholders' Equity Note [Abstract]

Common Stock

12. Common Stock

All common shareholders have identical rights. Each common share entitles the holder to one vote on all matters submitted to the shareholders for a vote.

All holders of common shares are entitled to receive dividends, as may be declared by the Company’s board of supervisory directors. Upon liquidation, common shareholders will receive distribution on a pro rata basis. As of September 30, 2023 and December 31, 2022, no cash dividends have been declared or paid.

- Definition

The entire disclosure for equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 235
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481062/946-235-50-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 505
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481004/946-505-50-6

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480237/815-40-50-6

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(e)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1

Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//505/tableOfContent

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-13

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-14

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-16

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-18

+ Details

Stock-Based Compensation - Summary of share based Payment Arrangement Option Activity (Detail) - Service And Performance Based Options [Member] - Two Thousand And Twenty Incentive Plan [Member] - USD ($)
$ / shares in Units, $ in Thousands

9 Months Ended

12 Months Ended

Sep. 30, 2023

Dec. 31, 2022

Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]

Number Of Options Outstanding as of December 31, 2022

34,880,604

Number of Options, Granted

^[1]

9,999,628

Number of Options, Exercised

(74,562)

Number of options, Cancelled or forfeited

(4,404,580)

Number of options Outstanding as of september 30, 2023

40,401,090

^[2]

34,880,604

Number of Options exercisable as of September 30, 2023

21,650,604

Weighted-Average Exercise Price as of December 31, 2022

$ 5.98

Weighted-Average Exercise Price, Granted

1.3

Weighted-Average Exercise Price, Exercised

2.44

Weighted-Average Exercise Price, Cancelled or forfeited

6.81

Weighted-Average Exercise Price as of September 30, 2023

4.71

$ 5.98

Weighted-Average Exercise Price Options exercisable as of September 30, 2023

$ 5.32

Weighted-Average Remaining Contractual Term (Years)

5 years 10 months 17 days

5 years 8 months 15 days

Weighted-Average Remaining Contractual Term (Years), Options exercisable as of September 30, 2023

3 years 10 months 17 days

Aggregate Intrinsic Value, Outstanding

$ 4,801

$ 10,647

Aggregate Intrinsic Value, Options exercisable as of September 30, 2023

$ 3,901

[1]

[2]

Debt - Additional Information (Detail) € / shares in Units, $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	Aug. 31, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 shares	Jun. 30, 2022 shares	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 EUR (€)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 EUR (€) € / shares	Dec. 31, 2021 USD ($)	May 26, 2023 USD ($)	Oct. 31, 2020 EUR (€)	Oct. 31, 2020 $ / shares	Nov. 30, 2018 EUR (€)	Nov. 30, 2018 USD ($)	Oct. 31, 2018 EUR (€)	Oct. 31, 2018 USD ($)
Debt Instrument [Line Items]
Convertible promissory notes issued		$ 15,000			$ 15,000			$ 15,000
Fair value of the outstanding debt obligation		$ 14,956			$ 14,956			14,702
Maturity date		Aug. 01, 2026			Aug. 01, 2026
Prime rate percent		4.55%			4.55%
Cash proceeds from certain permitted sources					$ 175,000
Accrued interest payable, percent		8.55%			8.55%
Amortization of debt discount					$ 272	$ 0
Borrowing amount percentage	33.00%
Common Stock [Member]
Debt Instrument [Line Items]
Stock issued during period, convertible share \| shares			3,360,000	960,000
ATAI LIFE SCIENCES N.V. [Member]
Debt Instrument [Line Items]
Debt conversion price \| $ / shares													$ 17
Face value of convertible notes \| €												€ 1
2018 Convertible Note Agreement [Member]
Debt Instrument [Line Items]
Convertible promissory notes issued														€ 200,000	$ 200
Debt conversion price \| € / shares									€ 17
Fair value of ordinary shares							€ 4,600,000	4,600	€ 5,800,000	$ 6,900
2018 Convertible Note Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Convertible promissory notes issued														1,000,000	1,200	€ 800,000	$ 1,000
2018 Convertible Note Agreement [Member] \| Apeiron [Member]
Debt Instrument [Line Items]
Convertible promissory notes issued														500,000	600
2018 Convertible Note Agreement [Member] \| Other Shareholder [Member]
Debt Instrument [Line Items]
Convertible promissory notes issued														€ 300,000	$ 400
Hercules Loan Agreement [Member]
Debt Instrument [Line Items]
Fair value of the outstanding debt obligation		$ 16,100			16,100			$ 14,900
Interest expense		$ 100			$ 300
Line of credit	$ 40,000										$ 30,000
Market capitalization daily basis	$ 550,000										550,000
Loan agreement description					In addition, the financial covenant under the Loan Agreement requires that beginning on the later of (i) July 1, 2023 and (ii) the date on which the aggregate outstanding amount borrowed under the 2022 Term Loan Facility is equal to or greater than $40.0 million, the Company shall maintain Qualified Cash in an amount no less than the sum of (1) 33% of the outstanding amount under the 2022 Term Loan Facility, and (2) the amount of the Borrowers’ and Subsidiary Guarantors’ accounts payable that have not been paid within 180 days from the invoice date of the relevant account payable, subject to certain exceptions; provided, that the financial covenant shall not apply on any day that the Company's market capitalization is at least $550.0 million measured on a consecutive 10-business day period immediately prior to such date of measurement and tested on a daily basis.
Term charge percentage	6.95%
Principal amount	$ 175,000
Hercules Loan Agreement [Member] \| Line of Credit Agreements [Member]
Debt Instrument [Line Items]
Line of credit											40,000
Hercules Loan Agreement [Member] \| Tranche 1B \| Line of Credit Agreements [Member]
Debt Instrument [Line Items]
Term loan advance											10,000
Hercules Loan Agreement [Member] \| Tranche 1C \| Line of Credit Agreements [Member]
Debt Instrument [Line Items]
Term loan advance											15,000
Hercules Loan Agreement [Member] \| Tranche 1D \| Line of Credit Agreements [Member]
Debt Instrument [Line Items]
Term loan advance											20,000
Hercules Loan Agreement [Member] \| Tranche 2 \| Line of Credit Agreements [Member]
Debt Instrument [Line Items]
Term loan advance											$ 15,000
Prepayment occurs on or prior to the first anniversary[Member] \| Hercules Loan Agreement [Member]
Debt Instrument [Line Items]
Prepayment principal amount percentage	2.00%
Prepayment occurs after the first anniversary and on or prior to the second anniversary [Member] \| Hercules Loan Agreement [Member]
Debt Instrument [Line Items]
Prepayment principal amount percentage	1.00%
Prepayment occurs after the second anniversary [Member] \| Hercules Loan Agreement [Member]
Debt Instrument [Line Items]
Prepayment principal amount percentage	0.50%

Commitments and Contingencies

9 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

16. Commitments and Contingencies

Research and Development Agreements

The Company may enter into contracts in the ordinary course of business with clinical research organizations for clinical trials, with contract manufacturing organizations for clinical supplies and with other vendors for preclinical studies, supplies and other services and products for operating purposes.

Indemnification

In the ordinary course of business, the Company may provide indemnifications of varying scope and terms to vendors, lessors, business partners, board members, officers and other parties with respect to certain matters, including, but not limited to, losses arising out of breach of such agreements, services to be provided by the Company, negligence or willful misconduct of the Company, violations of law by the Company, or intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with directors and certain officers and employees that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors, officers or employees. No demands have been made upon the Company to provide indemnification under such agreements, and thus, there are no claims that the Company is aware of that could have a material effect on the Company’s condensed consolidated financial statements.

The Company also maintains director and officer insurance, which may cover certain liabilities arising from its obligation to indemnify the Company’s directors. To date, the Company has not incurred any material costs and has not accrued any liabilities in the condensed consolidated financial statements as a result of these provisions.

Contingencies

From time to time, the Company may become involved in legal proceedings arising in the ordinary course of business. The Company is unable to predict the outcome of these matters or the ultimate legal and financial liability, and at this time cannot reasonably estimate the possible loss or range of loss and accordingly has not accrued a related liability. At each reporting date, the Company evaluates whether or not a potential loss amount or a potential range of loss is probable and reasonably estimable under the provisions of the authoritative guidance that addresses accounting for contingencies. The Company accrues a liability when a loss is considered probable and the amount can be reasonably estimated. When a material loss contingency is reasonably possible but not probable, the Company does not record a liability, but instead discloses the nature and the amount of the claim, and an estimate of the loss or range of loss, if such an estimate can be made. Legal fees are expensed as incurred. The Company currently believes that the outcome of any future potential legal proceedings, either individually or in the aggregate, will not have a material effect on its consolidated financial position, results of operations or cash flows.

Organization and Description of Business - Additional Information (Detail) $ / shares in Units, $ in Thousands	Sep. 30, 2023 € / shares	Sep. 30, 2023 USD ($) $ / shares	Dec. 31, 2022 € / shares	Dec. 31, 2022 USD ($) $ / shares
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock, par value \| (per share)	€ 0.1	$ 0.12	€ 0.1	$ 0.12
Short-term debt securities		$ 132,500
Cash and cash equivalents		76,492		$ 190,613
Accumulated deficit		$ (532,647)		$ (510,188)

- Definition

Amount of accumulated undistributed earnings (deficit).

+ References + Details

Equity Method Investments and Other Investments - Summary of Equity Method Investments (Detail) - USD ($)
$ in Thousands

9 Months Ended

Sep. 30, 2023

Dec. 31, 2022

Dec. 31, 2020

Schedule of Equity Method Investments [Line Items]

Equity Method Investments

$ 0

COMPASS Pathways Plc Two [Member]

Schedule of Equity Method Investments [Line Items]

Equity Method Investment, Description of Principal Activities

December 2018

Equity Method Investments

$ 0

Equity method investment, ownership percentage

15.50%

^[1]

22.40%

Innoplexus AG [Member]

Schedule of Equity Method Investments [Line Items]

Equity Method Investment, Description of Principal Activities

August 2018

Equity Method Investments

$ 0

Equity method investment, ownership percentage

35.00%

GABA Therapeutics Inc [Member]

Schedule of Equity Method Investments [Line Items]

Equity Method Investment, Description of Principal Activities

November 2020

Equity Method Investments

$ 0

Equity method investment, ownership percentage

^[2]

7.50%

[1]	(1) The Company accounted for its investment in COMPASS Pathways plc under the equity method until August 18, 2023, the closing date of COMPASS Pathways plc's dilutive financing round described below in Other investments held at fair value.
[2]	(2) The Company is deemed to have significant influence over this entity through its total ownership interest in the entity’s equity, including the Company’s investment in the respective entity’s preferred stock, described below in Other Investments. The Company’s total ownership interest, considering both preferred and common stock is 54.7%.

Accrued Liabilities - Summary of Accrued Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accrued Liabilities, Current [Abstract]
Accrued accounting, legal, and other professional fees	$ 3,494	$ 3,566
Accrued external research and development expenses	3,964	5,550
Accrued payroll	4,201	5,260
Taxes payable	887	2,224
Other liabilities	463	706
Total	$ 13,008	$ 17,306

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
License revenue	$ 87	$ 24	$ 296	$ 195
Operating expenses:
Research and development	13,290	19,028	48,047	52,437
Acquisition of In Process Research and Development	0	0	0	357
General and administrative	13,631	19,419	44,159	54,623
Total operating expenses	26,921	38,447	92,206	107,417
Loss from operations	(26,834)	(38,423)	(91,910)	(107,222)
Other income (expense), net:
Interest income	612	145	1,191	361
Interest expense	(686)	0	(1,965)	0
Change in fair value of contingent consideration liability - related parties	(58)	430	53	525
Change in Fair Value of Warrant Liability	0	0	0	53
Change in fair value of securities carried at fair value	1,832	344	3,322	(981)
Change in fair value of other investments held at fair value	69,014	0	69,014	0
Change in fair value of convertible notes receivable - related party	22	0	22	0
Foreign exchange gain (loss), net	253	4,470	(593)	11,515
Other income (expense), net	(308)	(100)	(100)	(112)
Total other income (expense), net	70,681	5,289	70,944	11,361
Net income (loss) before income taxes	43,847	(33,134)	(20,966)	(95,861)
Provision for income taxes	(238)	(135)	(588)	(227)
Losses from investments in equity method investees, net of tax	(238)	(2,432)	(3,199)	(14,680)
Net income (loss)	43,371	(35,701)	(24,753)	(110,768)
Net income (loss) attributable to noncontrolling interests	(873)	(1,814)	(2,821)	(3,394)
Net income (loss) attributable to ATAI Life Sciences N.V. stockholders	$ 44,244	$ (33,887)	$ (21,932)	$ (107,374)
Net income (loss) per share attributable to ATAI Life Sciences N.V. shareholders - basic	$ 0.28	$ (0.22)	$ (0.14)	$ (0.69)
Net income (loss) per share attributable to ATAI Life Sciences N.V. stockholders - diluted	$ 0.25	$ (0.22)	$ (0.14)	$ (0.69)
Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. Stockholders - basic (denominator)	155,792,490	156,607,468	155,793,601	154,713,922
Weighted average common shares outstanding attributable to ATAI Life Sciences N.V. Stockholders - diluted	177,565,973	156,607,468	155,793,601	154,713,922

Leases - Components of expenses related to leases is recorded on a straight-line basis over the lease term (Details) - General and Administrative Expense [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating lease cost	$ 120	$ 73	$ 431	$ 197
Short-term lease cost	102	106	384	328
Total lease cost	$ 222	$ 179	$ 815	$ 525