Biogen's three largest insider shareholders as of May 14, 2026 are Michel Vounatsos (Chief Executive Officer, 67.26K shares), Susan H Alexander (Evp Chief Legal Officer, 41.81K shares), Caroline Dorsa (Director, 31.00K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Michel Vounatsos | Chief Executive Officer | 67,261 | 0 | 23 Feb, 2022 |
| Susan H Alexander | Evp Chief Legal Officer | 41,807 | 0 | 10 Feb, 2026 |
| Caroline Dorsa | - | 31,002 | 0 | 18 Jun, 2025 |
| Christopher Viehbacher | President And Ceo | 29,924 | 0 | 10 Feb, 2026 |
| Christopher Viehbacher | President And Ceo | 29,924 | 0 | 10 Feb, 2026 |
| Michael R Mcdonnell | Evp, Chief Financial Officer | 24,341 | 0 | 12 Feb, 2025 |
| Michael R Mcdonnell | Evp, Chief Financial Officer | 24,341 | 0 | 12 Feb, 2025 |
| Eric K Rowinsky | - | 24,339 | 0 | 18 Jun, 2025 |
| Eric K Rowinsky | - | 24,339 | 0 | 18 Jun, 2025 |
| Ginger Gregory | Evp, Human Resources | 22,359 | 0 | 10 Feb, 2026 |
| Ginger Gregory | Evp, Human Resources | 22,359 | 0 | 10 Feb, 2026 |
| Susan H Alexander | Evp Chief Legal Officer | 0 | 20,082 | 07 Nov, 2024 |
| Nicole Murphy | Head Of Pharm Ops And Tech | 19,611 | 0 | 17 Feb, 2026 |
| Nicole Murphy | Head Of Pharm Ops And Tech | 19,611 | 0 | 17 Feb, 2026 |
| Richard Mulligan | - | 15,099 | 0 | 17 Jun, 2022 |
| Alexander J Denner | - | 15,099 | 0 | 17 Jun, 2022 |
| Alexander J Denner | - | 15,099 | 0 | 17 Jun, 2022 |
| Nancy Leaming | - | 13,763 | 0 | 02 Jul, 2021 |
| Nancy Leaming | - | 13,763 | 0 | 02 Jul, 2021 |
| Stephen A Sherwin | - | 13,688 | 0 | 18 Jun, 2025 |
| Stephen A Sherwin | - | 13,688 | 0 | 18 Jun, 2025 |
| Robin Kramer | Chief Financial Officer | 11,472 | 0 | 10 Feb, 2026 |
| Robin Kramer | Chief Financial Officer | 11,472 | 0 | 10 Feb, 2026 |
| Rachid Izzar | Head Of Global Product Strat. | 11,011 | 0 | 10 Feb, 2026 |
| Rachid Izzar | Head Of Global Product Strat. | 11,011 | 0 | 10 Feb, 2026 |
| Stelios Papadopoulos | - | 10,095 | 0 | 17 Jun, 2022 |
| Jesus B Mantas | - | 9,758 | 0 | 18 Jun, 2025 |
| Jesus B Mantas | - | 9,758 | 0 | 18 Jun, 2025 |
| William A Hawkins | - | 8,860 | 0 | 18 Jun, 2025 |
| Brian S Posner | - | 8,175 | 0 | 02 Jul, 2021 |
| Brian S Posner | - | 8,175 | 0 | 02 Jul, 2021 |
| Priya Singhal | Head Of Development | 8,043 | 0 | 10 Feb, 2026 |
| Chirfi Guindo | Head Of Glob Prod Strat Com | 7,364 | 0 | 23 Feb, 2022 |
| Maria C Freire | - | 6,815 | 0 | 18 Jun, 2025 |
| Maria C Freire | - | 6,815 | 0 | 18 Jun, 2025 |
| Adam Keeney | Head Of Corporate Development | 5,881 | 0 | 10 Feb, 2026 |
| Adam Keeney | Head Of Corporate Development | 5,881 | 0 | 10 Feb, 2026 |
| Susan Langer | - | 5,129 | 0 | 18 Jun, 2025 |
| Susan Langer | - | 5,129 | 0 | 18 Jun, 2025 |
| Alphonse Galdes | Evp Pharmaceutical Oper Tech | 5,064 | 0 | 21 Jan, 2022 |
| Alphonse Galdes | Evp Pharmaceutical Oper Tech | 5,064 | 0 | 21 Jan, 2022 |
| Jane Grogan | Head Of Research | 4,058 | 0 | 10 Feb, 2026 |
| Jane Grogan | Head Of Research | 4,058 | 0 | 10 Feb, 2026 |
| Monish D Patolawala | - | 3,710 | 0 | 18 Jun, 2025 |
| Monish D Patolawala | - | 3,710 | 0 | 18 Jun, 2025 |
| Lloyd Minor | - | 2,370 | 0 | 18 Jun, 2025 |
| Lloyd Minor | - | 2,370 | 0 | 18 Jun, 2025 |
| William D /Ca/ Jones | - | 2,145 | 0 | 17 Jun, 2022 |
| Sean Godbout | Chief Accounting Officer | 1,342 | 0 | 03 Apr, 2026 |
| Sean Godbout | Chief Accounting Officer | 1,342 | 0 | 03 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 |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Sean Godbout | Common Stock | A | 181 | $0.00 | 1,396 | D | M |
| 01 Apr, 2026 | Sean Godbout | Common Stock | D | 54 | $183.78 | 1,342 | D | F |
| 01 Apr, 2026 | Sean Godbout | Restricted Stock Unit | D | 181 | $0.00 | 364 | D | M |
| 13 Feb, 2026 | Robin Kramer | Restricted Stock Unit | A | 8,450 | $0.00 | 8,450 | D | A |
| 13 Feb, 2026 | Christopher Viehbacher | Restricted Stock Unit | A | 38,015 | $0.00 | 38,015 | D | A |
| 13 Feb, 2026 | Ginger Gregory | Restricted Stock Unit | A | 8,025 | $0.00 | 8,025 | D | A |
| 13 Feb, 2026 | Adam Keeney | Restricted Stock Unit | A | 8,025 | $0.00 | 8,025 | D | A |
| 13 Feb, 2026 | Rachid Izzar | Restricted Stock Unit | A | 7,390 | $0.00 | 7,390 | D | A |
| 12 Feb, 2026 | Nicole Murphy | Common Stock | A | 3 | $195.04 | 19,611 | D | P |
| 13 Feb, 2026 | Sean Godbout | Restricted Stock Unit | A | 1,800 | $0.00 | 1,800 | D | A |
| 13 Feb, 2026 | Susan H Alexander | Restricted Stock Unit | A | 8,450 | $0.00 | 8,450 | D | A |
| 13 Feb, 2026 | Jane Grogan | Restricted Stock Unit | A | 8,450 | $0.00 | 8,450 | D | A |
| 13 Feb, 2026 | Nicole Murphy | Restricted Stock Unit | A | 10,560 | $0.00 | 10,560 | D | A |
| 06 Feb, 2026 | Ginger Gregory | Common Stock | A | 1,635 | $0.00 | 19,400 | D | M |
| 06 Feb, 2026 | Adam Keeney | Common Stock | A | 1,802 | $0.00 | 4,186 | D | M |
| 06 Feb, 2026 | Jane Grogan | Common Stock | A | 1,385 | $0.00 | 3,176 | D | M |
| 06 Feb, 2026 | Robin Kramer | Common Stock | A | 789 | $0.00 | 8,801 | D | M |
| 06 Feb, 2026 | Rachid Izzar | Common Stock | A | 2,044 | $0.00 | 8,204 | D | M |
| 06 Feb, 2026 | Sean Godbout | Common Stock | A | 257 | $0.00 | 752 | D | M |
| 06 Feb, 2026 | Christopher Viehbacher | Common Stock | A | 9,008 | $0.00 | 25,451 | D | M |