Christopher Ryan Cave Barrett - Oct 1, 2025 Form 3 Insider Report for ATAI Life Sciences N.V. (ATAI)

Role
Chief Legal and Business Officer Exhibit 24 - Power of Attorney.
Signature
/s/ Ryan Barrett
Stock symbol
ATAI
Transactions as of
Oct 1, 2025
Transactions value $
$0
Form type
3
Date filed
10/3/2025, 06:17 PM
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Barrett Christopher Ryan Cave Chief Legal and Business Officer Exhibit 24 - Power of Attorney. C/O ATAI LIFE SCIENCES N.V., PROF. J.H. BAVINCKLAAN 7, AMSTERDAM, NETHERLANDS /s/ Ryan Barrett 2025-10-03 0002087548

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding ATAI Common Shares 155K Oct 1, 2025 Direct

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
holding ATAI Stock Option Oct 1, 2025 Common Shares 347K $2.44 Direct F1
holding ATAI Stock Option Oct 1, 2025 Common Shares 285K $5.68 Direct F1
holding ATAI Stock Option Oct 1, 2025 Common Shares 53.7K $11.71 Direct F1
holding ATAI Stock Option Oct 1, 2025 Common Shares 222K $15.00 Direct F1
holding ATAI Stock Option Oct 1, 2025 Common Shares 232K $5.54 Direct F2
holding ATAI Stock Option Oct 1, 2025 Common Shares 71.6K $2.86 Direct F3
holding ATAI Stock Option Oct 1, 2025 Common Shares 400K $1.18 Direct F4
holding ATAI Stock Option Oct 1, 2025 Common Shares 550K $1.84 Direct F5
holding ATAI Stock Option Oct 1, 2025 Common Shares 758K $1.50 Direct F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The stock option is fully vested.
F2 The stock option vested as to 25% of the underlying shares on January 1, 2023, with the remaining underlying shares vesting in 36 substantially equal monthly installments thereafter.
F3 The stock option vested as to 25% of the underlying shares on September 1, 2023, with the remaining underlying shares vesting in 36 substantially equal monthly installments thereafter.
F4 The 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.
F5 The stock option vested as to 25% of the underlying shares on January 1, 2025, with the remaining underlying shares vesting in 36 substantially equal monthly installments thereafter.
F6 The stock option shall vest as to 25% on January 1, 2026, with the remaining shares vesting in 36 substantially equal monthly installments thereafter.

Remarks:

Chief Legal and Business Officer Exhibit 24 - Power of Attorney.