Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Dec. 31, 2025 shares
Trading Arrangements, by Individual
Material Terms of Trading Arrangement	Item 9B. Other Information. (a) Disclosure in lieu of reporting on a Current Report on Form 8-K. None. (b) Insider trading arrangements and policies. On December 19, 2025, Kevin Craig, the Company’s Chief Medical Officer, entered into a Rule 10b5-1 trading arrangement intended to satisfy the affirmative defense of Rule 10b5-1(c) (the “Craig 10b5-1 Plan”). The Craig 10b5-1 Plan provides for the periodic sale of up to 440,316 shares of common stock until December 31, 2026. Other than the foregoing, during the quarter ended December 31, 2025, no director or “officer” (as defined in Rule 16a-1(f) under the Exchange Act) of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 of Regulation S-K.
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Kevin Craig [Member]
Trading Arrangements, by Individual
Name	Kevin Craig
Title	Chief Medical Officer
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	December 19, 2025
Aggregate Available	440,316

AtaiBeckley Inc. 10-K