Alkermes Inc. plc (ALKS) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for ALKS. 13F holdings as of 2026-03-31.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 28,314,410 | $1.0B | INCREASED |
| BAKER BROS. ADVISORS LP | 10,012,267 | $354M | UNCHANGED |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 9,511,112 | $336M | NEW |
| STATE STREET CORP | 9,465,286 | $335M | DECREASED |
| VANGUARD CAPITAL MANAGEMENT LLC | 7,427,397 | $263M | NEW |
Recent Insider Trades
| Insider | Type | Shares | Value | Date |
|---|---|---|---|---|
| Christopher I Wright (Director) | SELL | 2,000 | $90K | 2026-06-12 |
| David Joseph Gaffin (EVP, CLO, Alkermes, Inc.) | SELL | 2,034 | $88K | 2026-06-04 |
| Craig C. Hopkinson (EVP R&D, Chief Medical Officer) | EXERCISE | 5,000 | $97K | 2026-06-01 |
| Craig C. Hopkinson (EVP R&D, Chief Medical Officer) | SELL | 9,000 | $375K | 2026-06-01 |
| Samuel Joseph Parisi (VP, Finance (Interim PAO)) | EXERCISE | 12,825 | $248K | 2026-05-29 |
Full institutional holdings, insider history, and congressional trades for Alkermes Inc. plc on SentiSense.