Alkermes Inc. plc (ALKS) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for ALKS. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 410 institutions reported holding ALKS, with 177.1 million shares worth $9.3 billion in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| BlackRock | 29,235,739 | $1.5B | INCREASED |
| Vanguard | 18,464,981 | $967M | INCREASED |
| Baker Bros. Advisors | 10,012,267 | $525M | UNCHANGED |
| State Street | 9,160,575 | $480M | DECREASED |
| T. Rowe Price | 7,828,275 | $410M | INCREASED |
Recent Insider Trades
| Insider | Type | Shares | Value | Date |
|---|---|---|---|---|
| David Joseph Gaffin (EVP, CLO, Alkermes, Inc.) | SELL | 2,035 | $94K | 2026-11-03 |
| Joshua Reed (SVP, Chief Financial Officer) | EXERCISE | 9,164 | 2026-10-08 | |
| Joshua Reed (SVP, Chief Financial Officer) | TAX-W | 4,069 | $163K | 2026-10-08 |
| Joshua Reed (SVP, Chief Financial Officer) | EXERCISE | 9,164 | 2026-10-08 | |
| Anne Clem Whitaker (Director) | AWARD | 17,998 | $746K | 2026-10-07 |
Recent Congressional Trades
| Member | Type | Amount | Date |
|---|---|---|---|
| Gilbert Cisneros (Democrat) | PURCHASE | $1,001 - $15,000 | 2026-09-29 |
| Gilbert Cisneros (Democrat) | PURCHASE | $15,001 - $50,000 | 2026-07-30 |
| Gilbert Cisneros (Democrat) | PURCHASE | $15,001 - $50,000 | 2026-07-29 |
Full institutional holdings, insider history, and congressional trades for Alkermes Inc. plc on SentiSense.