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

Reporting relationship: Director
Issuer ticker: ATAI
Reported as of: 25 Nov 2025
Net transaction value: $0
SEC form: 4
Accepted by SEC: 26 Nov 2025, 17:00:26 UTC
Prior SEC filing: 06 Nov 2025
Next SEC filing: 06 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Ryan Barrett, as attorney in fact

Key filing fact

Cosmo Feilding-Mellen filed Form 4 for Atai Beckley N.V. (ATAI) on 26 Nov 2025.

Key facts

This page summarizes Cosmo Feilding-Mellen's Form 4 filing for Atai Beckley N.V. (ATAI).
2 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 26 Nov 2025, 17:00.

Change

Previous filing in this sequence was filed on 06 Nov 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0002094202 Primary reporting owner

Feilding-Mellen Cosmo

Relationship: Director
Address: C/O ATAI BECKLEY N.V., PROF. J.H. BAVINCKLAAN 7, AMSTERDAM, NETHERLANDS
Signature: /s/ Ryan Barrett, as attorney in fact
Signature date: 26 Nov 2025

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ATAI transaction Derivative

Stock Option

Disposed to Issuer

Transaction value: $0
Shares: -40,400
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 25 Nov 2025
Ownership: Direct
Underlying class: Common Shares
Underlying amount: 40,400
Exercise price: $4.48
Footnotes: F1

ATAI transaction Derivative

Stock Option

Award

Transaction value: $0
Shares: +10,000
Change %
Price: $0.000000
Shares after: 10,000
Date: 25 Nov 2025
Ownership: Direct
Underlying class: Common Shares
Underlying amount: 10,000
Exercise price: $4.48
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote 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.