Cosmo Feilding-Mellen - 25 Nov 2025 Form 4 Insider Report for Atai Beckley N.V. (ATAI)

Role: Director
Signature: /s/ Ryan Barrett, as attorney in fact
Issuer symbol: ATAI
Transactions as of: 25 Nov 2025
Transactions value $: $0
Form type: 4
Filing time: 26 Nov 2025, 17:00:26 UTC
Previous filing: 06 Nov 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Feilding-Mellen Cosmo	Director	C/O ATAI BECKLEY N.V., PROF. J.H. BAVINCKLAAN 7, AMSTERDAM, NETHERLANDS	/s/ Ryan Barrett, as attorney in fact	26 Nov 2025	0002094202

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ATAI	Stock Option	Disposed to Issuer	$0	-40.4K	-100%	$0.00	0	25 Nov 2025	Common Shares	40.4K	$4.48	Direct	F1
transaction	ATAI	Stock Option	Award	$0	+10K		$0.00	10K	25 Nov 2025	Common Shares	10K	$4.48	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	On November 5, 2025, the Reporting Person received a stock option award ("Option"), vesting in 12 substantially equal monthly installments, beginning on December 5, 2025, as reported on the Form 4 filed by the Reporting Person on November 6, 2025. On November 25, 2025 the Reporting Person entered into a consulting agreement with the Company pursuant to which the Option was amended to reduce the number of ordinary shares subject to the Option and to provide that the Option shall vest in full on December 31, 2025, subject to the Reporting Person's continued service on such date.

Content

On November 5, 2025, the Reporting Person received a stock option award ("Option"), vesting in 12 substantially equal monthly installments, beginning on December 5, 2025, as reported on the Form 4 filed by the Reporting Person on November 6, 2025. On November 25, 2025 the Reporting Person entered into a consulting agreement with the Company pursuant to which the Option was amended to reduce the number of ordinary shares subject to the Option and to provide that the Option shall vest in full on December 31, 2025, subject to the Reporting Person's continued service on such date.