SEC Form 4 · accession 0001140361-26-026787

AtaiBeckley Inc. · ATAI

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — Chief Medical Officer

Period of report

Jun 25, 2026

Accepted (ET)

Jun 29, 2026 · 6:00 pm EDT

Rule 10b5-1 plan

yes — trade under a plan

Issuer CIK

0002081043

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I
Common Stock	Jun 25, 2026	M	33,051	$1.50	A	41,488	D
Common Stock	Jun 25, 2026	M	9,528	$1.18	A	51,016	D
Common Stock	Jun 25, 2026	S	42,579	$4.51	D	8,437	D

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Stock Option^F3	$1.50	Jun 25, 2026	M	33,051	D	—	Mar 3, 2035	Common Stock	33,051	673,808	D
Stock Option^F4	$1.18	Jun 25, 2026	M	9,528	D	—	Mar 14, 2033	Common Stock	9,528	28,608	D

F1The option exercises and sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 19, 2025.
F2The price reported is a weighted average price. The securities were sold in multiple transactions at per share prices ranging from $4.50 to $4.54. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price
F3The stock option vested as to 25% of the underlying shares on January 1, 2026, with the remaining underlying shares vesting in 36 substantially equal monthly installments thereafter.
F4The stock option vested as to 25% of the underlying shares on March 14, 2024, with the remaining underlying shares vesting in 36 substantially equal monthly installments thereafter.