X0508 4 2025-08-13 0001840904 ATAI Life Sciences N.V. ATAI 0001860902 Rao Srinivas C/O ATAI LIFE SCIENCES N.V. PROF. J.H. BAVINCKLAAN 7 AMSTERDAM P7 1183AT NETHERLANDS true See Remarks false Stock Option 5.68 2025-08-13 4 A 0 650794 0 A 2030-08-20 Common Shares 650794 650794 D Stock Option 2.5 2025-08-13 4 A 0 217777 0 A 2030-08-20 Common Shares 217777 217777 D No new stock options have been awarded. The transactions reported herein reflect vesting of performance-based stock options ("Performance Options") previously awarded to the Reporting Person on January 20, 2021, vesting subject to performance conditions that were subsequently satisfied, as certified and approved by the board of directors of atai Life Sciences NV as of August 13, 2025. The portion of the Performance Options is fully vested and currently exercisable with respect to the shares reported herein. Co-Founder and Chief Executive Officer /s/ Ryan Barrett, Attorney-in-fact 2025-08-15