Alkermes plc (ALKS) Insider Trading
Over the last 3 months, ALKS insiders made 0 open-market buys and 7 sales, a net sale of -$1.7M (SEC Form 4). Over the last 6 months, 279 institutions increased and 279 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
7
Net (3m)
-$1.7M
Insider trades by month Buys Sells
Jan
Feb
Mar
Apr
May
Jun
Context3-month price +48.2%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Jun 12, 2026 | Wright Christopher Idirector | Sell | 2,000 | $45.10 |
| Jun 4, 2026 | Gaffin David Josephofficer: EVP, CLO, Alkermes, Inc. | Sell | 2,034 | $43.05 |
| Jun 1, 2026 | Hopkinson Craig C.officer: EVP R&D, Chief Medical Officer | Option | 5,000 | $19.34 |
| Jun 1, 2026 | Hopkinson Craig C.officer: EVP R&D, Chief Medical Officer | Sell | 9,000 | $41.67 |
| May 29, 2026 | Parisi Samuel Josephofficer: VP, Finance (Interim PAO) | Option | 12,825 | $19.34 |
| May 29, 2026 | Parisi Samuel Josephofficer: VP, Finance (Interim PAO) | Option | 3,392 | $20.03 |
| May 29, 2026 | Parisi Samuel Josephofficer: VP, Finance (Interim PAO) | Sell | 16,217 | $42.36 |
| May 22, 2026 | LAURENCIN CATO Tdirector | Grant | 11,538 | $36.98 |
| May 22, 2026 | Wright Christopher Idirector | Tax | 1,475 | $36.95 |
| May 22, 2026 | LAURENCIN CATO Tdirector | Option | 6,142 | — |
| May 22, 2026 | LAURENCIN CATO Tdirector | Tax | 1,475 | $36.95 |
| May 22, 2026 | Lurker Nancydirector | Grant | 5,409 | — |
| May 22, 2026 | MCKEON BRIAN Pdirector | Option | 6,142 | — |
| May 22, 2026 | GAYNOR RICHARDdirector | Tax | 1,475 | $36.95 |
| May 22, 2026 | Wilson Frank Andersdirector | Tax | 1,475 | $36.95 |
| May 22, 2026 | snyderman nancy lynn MDdirector | Option | 6,142 | — |
| May 22, 2026 | Cooke Shanedirector | Option | 6,142 | — |
| May 22, 2026 | GAYNOR RICHARDdirector | Grant | 5,409 | — |
| May 22, 2026 | Wright Christopher Idirector | Grant | 11,538 | $36.98 |
| May 22, 2026 | Cooke Shanedirector | Grant | 11,538 | $36.98 |
| May 22, 2026 | LAURENCIN CATO Tdirector | Grant | 5,409 | — |
| May 22, 2026 | Cooke Shanedirector | Grant | 5,409 | — |
| May 22, 2026 | snyderman nancy lynn MDdirector | Grant | 11,538 | $36.98 |
| May 22, 2026 | Wilson Frank Andersdirector | Grant | 11,538 | $36.98 |
| May 22, 2026 | Wilson Frank Andersdirector | Grant | 5,409 | — |
| May 22, 2026 | snyderman nancy lynn MDdirector | Tax | 1,475 | $36.95 |
| May 22, 2026 | Wright Christopher Idirector | Grant | 5,409 | — |
| May 22, 2026 | Wilson Frank Andersdirector | Option | 6,142 | — |
| May 22, 2026 | Lurker Nancydirector | Grant | 11,538 | $36.98 |
| May 22, 2026 | Lurker Nancydirector | Tax | 1,475 | $36.95 |
Source: ALKS SEC Form 4 filings, latest Jun 12, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their ALKS positions over the last 6 months (SEC Form 13F).
Increased
279
New positions
128
Reduced
279
Sold out
91
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 28.3M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 28.3M | Feb 12, 2026 |
| VANGUARD GROUP INC | Reduced | 18.0M | Jan 29, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 14.9M | May 15, 2026 |
| BAKER BROS. ADVISORS LP | Unchanged | 10.0M | May 15, 2026 |
| BAKER BROS. ADVISORS LP | Increased | 10.0M | Feb 17, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 9.5M | May 8, 2026 |
| STATE STREET CORP | Increased | 9.5M | Feb 13, 2026 |
| STATE STREET CORP | Reduced | 9.5M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 9.0M | Feb 17, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 6.7M | Feb 12, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 6.2M | May 14, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 6.1M | May 15, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 6.0M | Feb 13, 2026 |
| JPMORGAN CHASE & CO | Increased | 5.2M | Feb 11, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.