ALNY's three largest insider shareholders as of May 30, 2026 are John Maraganore (Chief Executive Officer, 227.66K shares), Yvonne Greenstreet (Chief Executive Officer, 95.69K shares), Jeffrey V. Poulton (Evp, Chief Financial Officer, 61.80K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| David E I Pyott | - | 911 | 0 | 12 May, 2025 |
| John Maraganore | Chief Executive Officer | 227,663 | 0 | 23 Dec, 2021 |
| Michael W Bonney | - | 16,804 | 0 | 19 Aug, 2025 |
| Peter N Kellogg | - | 775 | 0 | 12 May, 2025 |
| Dennis A Ausiello | - | 911 | 0 | 15 Aug, 2025 |
| Amy W Schulman | - | 11,961 | 0 | 12 May, 2025 |
| Yvonne Greenstreet | Chief Executive Officer | 95,695 | 0 | 06 Mar, 2026 |
| Akshay Vaishnaw | President | 22,774 | 0 | 07 Aug, 2023 |
| Robert W. Hesslein | Evp, Clo And Secretary | 8,002 | 0 | 05 Mar, 2025 |
| Laurie Keating | Evp, Chief Legal Officer | 5,132 | 0 | 09 Aug, 2021 |
| Charles Elliott Sigal | - | 775 | 0 | 12 May, 2025 |
| Carolyn R Bertozzi | - | 775 | 0 | 12 May, 2025 |
| Indrani Lall Franchini | Evp, Clo Secretary | 4,133 | 0 | 29 Feb, 2024 |
| Colleen F Reitan | - | 775 | 0 | 11 Sep, 2025 |
| Jeffrey V. Poulton | Evp, Chief Financial Officer | 61,805 | 0 | 06 Mar, 2026 |
| Tolga Tanguler | Evp, Chief Commercial Officer | 34,297 | 0 | 06 Mar, 2026 |
| Kevin Joseph Fitzgerald | Cso Evp, Head Of Research | 20,569 | 0 | 06 Mar, 2026 |
| Melissa Mclaughlin | Chief Human Resources Officer | 9,443 | 0 | 07 Apr, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 265 | $316.61 | 13,088 | D | S |
| 02 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 359 | $317.44 | 12,729 | D | S |
| 02 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 209 | $318.47 | 12,520 | D | S |
| 02 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 86 | $319.69 | 12,434 | D | S |
| 02 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 147 | $320.62 | 12,287 | D | S |
| 02 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 224 | $321.64 | 12,063 | D | S |
| 02 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 245 | $322.86 | 11,818 | D | S |
| 02 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 81 | $323.64 | 11,737 | D | S |
| 02 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 8 | $325.49 | 11,729 | D | S |
| 06 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 56 | $320.14 | 11,673 | D | S |
| 06 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 909 | $329.76 | 10,764 | D | S |
| 06 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 829 | $330.46 | 9,935 | D | S |
| 06 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 293 | $331.89 | 9,642 | D | S |
| 06 Apr, 2026 | Melissa Mclaughlin | Common Stock | D | 199 | $333.94 | 9,443 | D | S |
| 04 Mar, 2026 | Jeffrey V. Poulton | Common Stock | D | 114 | $319.03 | 64,159 | D | S |
| 04 Mar, 2026 | Kevin Joseph Fitzgerald | Common Stock | D | 29 | $319.03 | 21,831 | D | S |
| 04 Mar, 2026 | Tolga Tanguler | Common Stock | D | 106 | $319.03 | 36,500 | D | S |
| 04 Mar, 2026 | Tolga Tanguler | Common Stock | D | 106 | $319.03 | 36,500 | D | S |
| 04 Mar, 2026 | Jeffrey V. Poulton | Common Stock | D | 114 | $319.03 | 64,159 | D | S |
| 04 Mar, 2026 | Jeffrey V. Poulton | Common Stock | D | 114 | $319.03 | 64,159 | D | S |