Alkermes plc (ALKS) Insider Trading
Over the last 3 months, ALKS insiders made 0 open-market buys and 10 sales, a net sale of -$3.9M (SEC Form 4). Over the last 6 months, 264 institutions increased and 290 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
10
Net (3m)
-$3.9M
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +11.7%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 17, 2026 | Nichols Christian Toddofficer: SVP, Chief Commercial Officer | Sell | 6,912 | $49.19 |
| Aug 17, 2026 | Nichols Christian Toddofficer: SVP, Chief Commercial Officer | Sell | 664 | $49.65 |
| Aug 7, 2026 | Jackson Blair Curtisdirector, officer: President & CEO, Alkermes plc | Grant | 93,229 | $49.61 |
| Aug 7, 2026 | Jackson Blair Curtisdirector, officer: President & CEO, Alkermes plc | Grant | 124,305 | $49.61 |
| Aug 3, 2026 | Gaffin David Josephofficer: EVP, CLO, Alkermes, Inc. | Sell | 2,034 | $48.58 |
| Aug 3, 2026 | Hopkinson Craig C.officer: EVP R&D, Chief Medical Officer | Option | 104 | $19.34 |
| Aug 3, 2026 | snyderman nancy lynn MDdirector | Option | 27,948 | $46.72 |
| Aug 3, 2026 | snyderman nancy lynn MDdirector | Sell | 44,472 | $50.35 |
| Aug 3, 2026 | Hopkinson Craig C.officer: EVP R&D, Chief Medical Officer | Option | 4,896 | $24.59 |
| Aug 3, 2026 | Hopkinson Craig C.officer: EVP R&D, Chief Medical Officer | Sell | 9,000 | $48.58 |
| Aug 3, 2026 | snyderman nancy lynn MDdirector | Option | 16,524 | $46.72 |
| Jul 6, 2026 | Gaffin David Josephofficer: EVP, CLO, Alkermes, Inc. | Sell | 2,034 | $54.03 |
| Jul 1, 2026 | Hopkinson Craig C.officer: EVP R&D, Chief Medical Officer | Sell | 8,300 | $51.46 |
| Jul 1, 2026 | Hopkinson Craig C.officer: EVP R&D, Chief Medical Officer | Option | 5,000 | $19.34 |
| Jul 1, 2026 | Hopkinson Craig C.officer: EVP R&D, Chief Medical Officer | Sell | 700 | $52.13 |
| 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 | Sell | 9,000 | $41.67 |
| Jun 1, 2026 | Hopkinson Craig C.officer: EVP R&D, Chief Medical Officer | Option | 5,000 | $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 29, 2026 | Parisi Samuel Josephofficer: VP, Finance (Interim PAO) | Option | 12,825 | $19.34 |
| May 22, 2026 | LAURENCIN CATO Tdirector | Grant | 11,538 | $36.98 |
| May 22, 2026 | MCKEON BRIAN Pdirector | Grant | 5,409 | — |
| May 22, 2026 | Wilson Frank Andersdirector | Option | 6,142 | — |
| May 22, 2026 | Wright Christopher Idirector | Tax | 1,475 | $36.95 |
| May 22, 2026 | Cooke Shanedirector | Tax | 3,207 | $36.95 |
| May 22, 2026 | LAURENCIN CATO Tdirector | Grant | 5,409 | — |
| May 22, 2026 | Wright Christopher Idirector | Option | 6,142 | — |
| May 22, 2026 | GAYNOR RICHARDdirector | Tax | 1,475 | $36.95 |
Source: ALKS SEC Form 4 filings, latest Aug 17, 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
264
New positions
168
Reduced
290
Sold out
53
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 29.2M | Aug 7, 2026 |
| BLACKROCK, INC. | Increased | 28.3M | May 13, 2026 |
| BAKER BROS. ADVISORS LP | Unchanged | 10.0M | Aug 14, 2026 |
| BAKER BROS. ADVISORS LP | Unchanged | 10.0M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 9.5M | May 8, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 9.5M | Aug 13, 2026 |
| STATE STREET CORP | Reduced | 9.5M | May 15, 2026 |
| STATE STREET CORP | Reduced | 9.2M | Aug 7, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 7.5M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 7.4M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 6.7M | Aug 14, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 6.5M | Aug 13, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 6.2M | May 14, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 6.1M | May 15, 2026 |
| PRICE T ROWE ASSOCIATES INC /MD/ | Reduced | 4.7M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.