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Livermore
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AtaiBeckley Inc.

ATAIDelisted Sep 11, 2026
Industry
Pharmaceutical Preparations
SEC CIK
0002081043

AtaiBeckley Inc. was delisted on Sep 11, 2026; its insiders filed their last Form 4 on Sep 11, 2026; 242 institutions reported holding it in 13F filings for Q2 2026, worth $710.6M in total; no superinvestor held it.

Holders of 5% or more of ATAI

Holders whose latest Schedule 13D or 13G filing reports 5% or more of AtaiBeckley Inc., largest stake first. The change is against the holder's previous filing.

Holders of 5% or more of ATAI
HolderLatest formStakeChangeFirst filedLatest filingFiling
Apeiron Investment Group Ltd.13D/A24.00%56.6M shares−0.30 ppfrom 24.30%Feb 24, 20254 filingsOct 20, 2025SEC

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

5 Schedule 13D and 13G filings on AtaiBeckley Inc., newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on ATAI
Filed (ET)FilerFormStakeChangeEvent dateFiling
Oct 20, 20254:01 PM ETApeiron Investment Group Ltd.and 4 others13D/A24.00%56.6M shares−0.30 ppfrom 24.30%Oct 16, 2025SEC
Aug 18, 20256:17 PM ETApeiron Investment Group Ltd.and 4 others13D/A24.30%56.5M shares+2.10 ppfrom 22.20%Aug 14, 2025SEC
Jun 4, 20255:38 PM ETApeiron Investment Group Ltd.and 4 others13D/A22.20%46.7M shares−0.50 ppfrom 22.70%Jun 2, 2025SEC
May 27, 20254:14 PM ETGalaxy Group Funding ECI U LLCand 2 others13G/A4.20%8.47M shares–Below 5%Mar 31, 2025SEC
Feb 24, 20259:59 PM ETApeiron Investment Group Ltd.and 4 others13D22.70%44.9M sharesNewFeb 14, 2025SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell AtaiBeckley Inc. shares.

No Form 144 notices for AtaiBeckley Inc. are on file.