Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2021

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):

	Year Ended December 31,
	2021			2020
Numerator:
Net loss	$	(174,244	)	$	(178,625	)
Net income (loss) attributable to redeemable    noncontrolling interests and noncontrolling    interests		(6,436	)		(8,782	)
Net income attributable to ATAI Life Sciences    N.V. shareholders - basic and diluted	$	(167,808	)	$	(169,843	)
Denominator:
Weighted average common shares outstanding    attributable to ATAI Life Sciences N.V.    Stockholders - basic and diluted		138,265,859			93,019,072
Net income per share attributable to ATAI Life    Sciences N.V. shareholders - basic and diluted	$	(1.21	)	$	(1.83	)

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

Potentially dilutive securities to the Company’s common shares:

	As of December 31,
	2021		2020
Options to purchase common stock		26,687,820		11,331,232
HSOP options to purchase common stock		7,179,248		—
2018 Convertible Promissory Notes - Related Parties (Note 11)		10,521,824		16,000,000
		44,388,892		27,331,232