AtaiBeckley Inc.
Ownership
Ownership Structure
Who owns AtaiBeckley Inc. (ATAI)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 83.2% of the shares are freely tradable; institutional investors hold 44.8%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 6.91 | 25,574,573 | +274.2 | 06/30/2026 |
| Deep Track Capital, LP | 3.90 | 14,417,442 | +20.1 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.18 | 11,747,249 | -0.1 | 06/30/2026 |
| State Street Corp | 2.24 | 8,287,054 | +624.2 | 06/30/2026 |
| Geode Capital Management, LLC | 1.87 | 6,933,309 | +176.2 | 06/30/2026 |
| Adage Capital Partners Gp LLC | 1.53 | 5,642,758 | +0.0 | 06/30/2026 |
| UBS Group AG | 1.20 | 4,424,701 | -40.4 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 1.11 | 4,106,450 | +0.0 | 06/30/2026 |
| Morgan Stanley - Brokerage Accounts | 1.04 | 3,852,772 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.49 | 9,198,265 | -0.2 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 11, 2026 | Craig Kevin James | Chief Medical Officer | Other | 8,437 | – | – |
| Sep 11, 2026 | Rao Srinivas | See remarks | Other | 3,500 | – | – |
| Sep 11, 2026 | Rao Srinivas | See remarks | Other | 212,942 | – | – |
| Sep 11, 2026 | Johnson Anne Nagengast | Chief Accounting Officer | Other | 140,045 | – | – |
| Sep 11, 2026 | Barrett Christopher Ryan Cave | See remarks | Other | 155,066 | – | – |
| Sep 11, 2026 | Short Glenn Frank | Chief Scientific Officer | Other | 42,333 | – | – |
| Sep 11, 2026 | Kalali Amir H | Director | Other | 4,666 | – | – |
| Sep 11, 2026 | Smiley Andrea Heslin | Director | Other | 4,666 | – | – |
| Sep 11, 2026 | Angermayer Christian | Director | Other | 1,799,302 | – | – |
| Sep 11, 2026 | Angermayer Christian | Director | Other | 53,398,214 | – | – |
| Sep 11, 2026 | Angermayer Christian | Director | Other | 559,232 | – | – |
| Apr 20, 2026 | Kevin James Craig | Insider | Sell | 42,579 | 5.00 | 212,895 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 11, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.