SEC Form 4 · Updated Daily
ALNY
— ALNYLAM PHARMACEUTICALS, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Sanofi | 10%+ Owner | 10,554,134 | 2017-05-31 | P |
| Greenstreet Yvonne | Director · Officer | 95,695 | 2026-03-04 | S |
| Poulton Jeffrey V. | Officer | 61,805 | 2026-03-04 | S |
| Tanguler Tolga | Officer | 34,297 | 2026-03-04 | S |
| SCHULMAN AMY W | 10%+ Owner | 24,049 | 2026-05-20 | A |
| Fitzgerald Kevin Joseph | Officer | 20,569 | 2026-03-05 | S |
| Garg Pushkal | Officer | 18,693 | 2026-03-05 | S |
| SUPRAN BRYAN | Officer | 14,565 | 2026-03-02 | A |
| McLaughlin Melissa | Officer | 9,443 | 2026-04-06 | S |
| PYOTT DAVID E I | Director | 1,582 | 2026-06-01 | S |
| HAMBURG MARGARET A | Director | 1,582 | 2026-05-20 | A |
| Ausiello Dennis A | Director | 1,582 | 2026-05-20 | A |
| KELLOGG PETER N | Director | 1,446 | 2026-05-20 | A |
| BRANDICOURT OLIVIER | Director | 1,446 | 2026-05-20 | A |
| Sigal Charles Elliott | Director | 1,446 | 2026-05-20 | A |
| Reitan Colleen F | Director | 1,446 | 2026-05-20 | A |
| Arbuckle Stuart A | Director | 671 | 2026-05-20 | A |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-06-01 | Cravatt Benjamin | Grant / award (derivative) | 4,393 | $0.00 | 4,393 |
| 2026-06-01 | PYOTT DAVID E I | Option exercise (derivative) | 3,830 | $0.00 | 0 |
| 2026-06-01 | PYOTT DAVID E I | Open-market sale | 17 | $302.65 | 1,582 |
| 2026-06-01 | PYOTT DAVID E I | Open-market sale | 495 | $300.72 | 1,599 |
| 2026-06-01 | PYOTT DAVID E I | Open-market sale | 1,222 | $299.87 | 2,094 |
| 2026-06-01 | PYOTT DAVID E I | Open-market sale | 1,175 | $298.91 | 3,316 |
| 2026-06-01 | PYOTT DAVID E I | Open-market sale | 921 | $297.71 | 4,491 |
| 2026-06-01 | PYOTT DAVID E I | Option exercise | 3,830 | $0.00 | 5,412 |
| 2026-05-20 | Arbuckle Stuart A | Grant / award (derivative) | 1,441 | $0.00 | 1,441 |
| 2026-05-20 | Arbuckle Stuart A | Grant / award | 671 | $0.00 | 671 |
| 2026-05-20 | Ausiello Dennis A | Grant / award (derivative) | 1,441 | $0.00 | 1,441 |
| 2026-05-20 | Ausiello Dennis A | Grant / award | 671 | $0.00 | 1,582 |
| 2026-05-20 | BRANDICOURT OLIVIER | Grant / award (derivative) | 1,441 | $0.00 | 1,441 |
| 2026-05-20 | BRANDICOURT OLIVIER | Grant / award | 671 | $0.00 | 1,446 |
| 2026-05-20 | HAMBURG MARGARET A | Grant / award (derivative) | 1,441 | $0.00 | 1,441 |
| 2026-05-20 | HAMBURG MARGARET A | Grant / award | 671 | $0.00 | 1,582 |
| 2026-05-20 | KELLOGG PETER N | Grant / award (derivative) | 1,441 | $0.00 | 1,441 |
| 2026-05-20 | KELLOGG PETER N | Grant / award | 671 | $0.00 | 1,446 |
| 2026-05-20 | PYOTT DAVID E I | Grant / award (derivative) | 1,441 | $0.00 | 1,441 |
| 2026-05-20 | PYOTT DAVID E I | Grant / award | 671 | $0.00 | 1,582 |
| 2026-05-20 | Reitan Colleen F | Grant / award (derivative) | 1,441 | $0.00 | 1,441 |
| 2026-05-20 | Reitan Colleen F | Grant / award | 671 | $0.00 | 1,446 |
| 2026-05-20 | SCHULMAN AMY W | Grant / award (derivative) | 1,802 | $0.00 | 1,802 |
| 2026-05-20 | SCHULMAN AMY W | Grant / award | 838 | $0.00 | 24,049 |
| 2026-05-20 | Sigal Charles Elliott | Grant / award (derivative) | 1,441 | $0.00 | 1,441 |
| 2026-05-20 | Sigal Charles Elliott | Grant / award | 671 | $0.00 | 1,446 |
| 2026-05-13 | SCHULMAN AMY W | Option exercise (derivative) | 11,250 | $0.00 | 0 |
| 2026-05-13 | SCHULMAN AMY W | Option exercise | 11,250 | $70.20 | 23,211 |
| 2026-04-06 | McLaughlin Melissa | Open-market sale | 199 | $333.94 | 9,443 |
| 2026-04-06 | McLaughlin Melissa | Open-market sale | 293 | $331.89 | 9,642 |
| 2026-04-06 | McLaughlin Melissa | Open-market sale | 829 | $330.46 | 9,935 |
| 2026-04-06 | McLaughlin Melissa | Open-market sale | 909 | $329.76 | 10,764 |
| 2026-04-06 | McLaughlin Melissa | Open-market sale | 56 | $320.14 | 11,673 |
| 2026-04-02 | McLaughlin Melissa | Open-market sale | 8 | $325.49 | 11,729 |
| 2026-04-02 | McLaughlin Melissa | Open-market sale | 81 | $323.64 | 11,737 |
| 2026-04-02 | McLaughlin Melissa | Open-market sale | 245 | $322.86 | 11,818 |
| 2026-04-02 | McLaughlin Melissa | Open-market sale | 224 | $321.64 | 12,063 |
| 2026-04-02 | McLaughlin Melissa | Open-market sale | 147 | $320.62 | 12,287 |
| 2026-04-02 | McLaughlin Melissa | Open-market sale | 86 | $319.69 | 12,434 |
| 2026-04-02 | McLaughlin Melissa | Open-market sale | 209 | $318.47 | 12,520 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.