ALNYLAM PHARMACEUTICALS, INC. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Greenstreet Yvonne | Chief Executive Officer | Option Exercise | 2,352 | $85.00 | $199,920 | 68,600 | Nov 26, 2025 |
| Fitzgerald Kevin Joseph | CSO & EVP, Head of Research | Sale | 295 | $463.08 | $136,609 | 21,264 | Nov 17, 2025 |
| Greenstreet Yvonne | Chief Executive Officer | Sale | 1,069 | $453.52 | $484,813 | 74,229 | Nov 12, 2025 |
| Poulton Jeffrey V. | EVP, Chief Financial Officer | Award / Grant | 4,644 | — | — | 57,873 | Oct 2, 2025 |
| Greenstreet Yvonne | Chief Executive Officer | Sale | 1,010 | $451.86 | $456,379 | 69,854 | Oct 2, 2025 |
| Tanguler Tolga | EVP, Chief Commercial Officer | Sale | 1 | $457.64 | $458 | 27,438 | Oct 2, 2025 |
| Fitzgerald Kevin Joseph | CSO & EVP, Head of Research | Sale | 122 | $457.43 | $55,806 | 25,234 | Oct 2, 2025 |
| Garg Pushkal | EVP Chief R&D | Sale | 215 | $454.37 | $97,690 | 20,221 | Oct 2, 2025 |
| SUPRAN BRYAN | EVP, CLO and Secretary | Award / Grant | 13,026 | — | — | 13,026 | Oct 1, 2025 |
| Reitan Colleen F | — | Sale | 951 | $474.85 | $451,582 | 5,791 | Sep 9, 2025 |
| Tanguler Tolga | EVP, Chief Commercial Officer | Sale | 144 | $452.49 | $65,159 | 25,992 | Aug 29, 2025 |
| Garg Pushkal | EVP Chief R&D | Sale | 276 | $455.41 | $125,693 | 21,400 | Aug 18, 2025 |
| Poulton Jeffrey V. | EVP, Chief Financial Officer | Sale | 19 | $455.82 | $8,661 | 50,121 | Aug 18, 2025 |
| Greenstreet Yvonne | Chief Executive Officer | Sale | 195 | $450.92 | $87,929 | 62,361 | Aug 18, 2025 |
| Fitzgerald Kevin Joseph | CSO & EVP, Head of Research | Sale | 543 | $454.04 | $246,544 | 22,972 | Aug 18, 2025 |
| BONNEY MICHAEL W | — | Option Exercise | 11,250 | $70.20 | $789,750 | 28,054 | Aug 18, 2025 |
| Tanguler Tolga | EVP, Chief Commercial Officer | Sale | 12 | $455.82 | $5,470 | 29,466 | Aug 15, 2025 |
| Ausiello Dennis A | — | Sale | 1,205 | $441.88 | $532,465 | 1,552 | Aug 14, 2025 |
| Fitzgerald Kevin Joseph | CSO & EVP, Head of Research | Award / Grant | 7,763 | — | — | 21,264 | Jul 1, 2025 |
| Greenstreet Yvonne | Chief Executive Officer | Option Exercise | 12,081 | $119.13 | $1,439,210 | 61,029 | Jun 2, 2025 |
| Greenstreet Yvonne | Chief Executive Officer | Gift | 8,376 | — | — | 48,948 | May 16, 2025 |
| BONNEY MICHAEL W | — | Sale | 549 | $267.14 | $146,660 | 27,505 | May 15, 2025 |
| Ausiello Dennis A | — | Award / Grant | 775 | — | — | 911 | May 8, 2025 |
| BONNEY MICHAEL W | — | Award / Grant | 775 | — | — | 16,804 | May 8, 2025 |
| BRANDICOURT OLIVIER | — | Award / Grant | 775 | — | — | 775 | May 8, 2025 |
| HAMBURG MARGARET A | — | Award / Grant | 775 | — | — | 911 | May 8, 2025 |
| KELLOGG PETER N | — | Award / Grant | 775 | — | — | 775 | May 8, 2025 |
| PYOTT DAVID E I | — | Award / Grant | 775 | — | — | 911 | May 8, 2025 |
| SCHULMAN AMY W | — | Award / Grant | 775 | — | — | 11,961 | May 8, 2025 |
| Sigal Charles Elliott | — | Award / Grant | 775 | — | — | 775 | May 8, 2025 |
| Bertozzi Carolyn R | — | Award / Grant | 775 | — | — | 775 | May 8, 2025 |
| Greenstreet Yvonne | Chief Executive Officer | Gift | 41,311 | — | — | 57,324 | May 2, 2025 |
| Garg Pushkal | CMO & EVP Dev & Med Affairs | Sale | 4,321 | $285.00 | $1,231,485 | 20,221 | Mar 24, 2025 |
| PYOTT DAVID E I | — | Sale | 7,440 | $299.00 | $2,224,560 | 136 | Mar 24, 2025 |
| SCHULMAN AMY W | — | Option Exercise | 2,750 | $131.21 | $360,828 | 11,186 | Mar 13, 2025 |
| Fitzgerald Kevin Joseph | CSO & EVP, Head of Research | Sale | 328 | $240.95 | $79,032 | 13,896 | Mar 4, 2025 |
| Hesslein Robert W. | EVP, CLO and Secretary | Award / Grant | 757 | — | — | 8,002 | Mar 3, 2025 |
| Tanguler Tolga | EVP, Chief Commercial Officer | Sale | 131 | $242.37 | $31,750 | 28,351 | Mar 3, 2025 |
| Garg Pushkal | CMO & EVP Dev & Med Affairs | Sale | 116 | $245.26 | $28,450 | 26,377 | Mar 3, 2025 |
| Poulton Jeffrey V. | EVP, Chief Financial Officer | Award / Grant | 15,117 | — | — | 49,015 | Mar 3, 2025 |
| Greenstreet Yvonne | Chief Executive Officer | Sale | 791 | $244.41 | $193,328 | 99,480 | Mar 3, 2025 |
| Tanguler Tolga | EVP, Chief Commercial Officer | Sale | 28 | $236.51 | $6,622 | 14,830 | Feb 28, 2025 |
| Garg Pushkal | CMO & EVP Dev & Med Affairs | Sale | 91 | $240.32 | $21,869 | 13,674 | Feb 28, 2025 |
| Fitzgerald Kevin Joseph | CSO & EVP, Head of Research | Sale | 21 | $238.33 | $5,005 | 12,833 | Feb 28, 2025 |
| Greenstreet Yvonne | Chief Executive Officer | Sale | 127 | $239.18 | $30,376 | 87,039 | Feb 27, 2025 |
| Poulton Jeffrey V. | EVP, Chief Financial Officer | Sale | 59 | $244.11 | $14,402 | 33,898 | Feb 27, 2025 |
| Garg Pushkal | CMO & EVP Dev & Med Affairs | Sale | 306 | $250.73 | $76,723 | 12,369 | Feb 18, 2025 |
| Greenstreet Yvonne | Chief Executive Officer | Sale | 38 | $260.57 | $9,902 | 81,619 | Feb 14, 2025 |
| Fitzgerald Kevin Joseph | CSO & EVP, Head of Research | Sale | 76 | $257.79 | $19,592 | 12,964 | Feb 14, 2025 |
| Poulton Jeffrey V. | EVP, Chief Financial Officer | Sale | 17 | $263.33 | $4,477 | 32,806 | Feb 13, 2025 |