BIOGEN 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 |
|---|---|---|---|---|---|---|---|
| Viehbacher Christopher | President and CEO | Tax Withholding | 3,404 | $177.78 | $605,163 | 16,443 | Dec 1, 2025 |
| Grogan Jane | Head of Research | Tax Withholding | 337 | $154.27 | $51,989 | 1,791 | Oct 31, 2025 |
| Godbout Sean | Chief Accounting Officer | Tax Withholding | 8 | $155.25 | $1,242 | 495 | Oct 2, 2025 |
| Singhal Priya | Head of Development | Sale | 517 | $133.55 | $69,045 | 5,772 | Aug 29, 2025 |
| Izzar Rachid | Head of Global Product Strat. | Sale | 2,223 | $135.00 | $300,105 | 6,330 | Jul 8, 2025 |
| Minor Lloyd | — | Award / Grant | 2,370 | — | — | 2,370 | Jun 17, 2025 |
| Patolawala Monish D | — | Award / Grant | 2,370 | — | — | 3,710 | Jun 17, 2025 |
| Mantas Jesus B | — | Award / Grant | 2,370 | — | — | 9,758 | Jun 17, 2025 |
| HAWKINS WILLIAM A | — | Award / Grant | 2,370 | — | — | 8,860 | Jun 17, 2025 |
| Freire Maria C | — | Award / Grant | 2,370 | — | — | 6,815 | Jun 17, 2025 |
| Rowinsky Eric K | — | Award / Grant | 2,370 | — | — | 24,339 | Jun 17, 2025 |
| SHERWIN STEPHEN A | — | Award / Grant | 2,370 | — | — | 13,688 | Jun 17, 2025 |
| LANGER SUSAN | — | Award / Grant | 2,370 | — | — | 5,129 | Jun 17, 2025 |
| DORSA CAROLINE | — | Award / Grant | 3,160 | — | — | 31,002 | Jun 17, 2025 |
| Singhal Priya | Head of Development | Sale | 3,806 | $126.25 | $480,508 | 5,427 | May 19, 2025 |
| DORSA CAROLINE | — | Purchase | 1,235 | $122.72 | $151,559 | 27,842 | May 2, 2025 |
| Keeney Adam | Head of Corporate Development | Option Exercise | 938 | — | — | 2,838 | May 1, 2025 |
| SHERWIN STEPHEN A | — | Sale | 8,760 | $150.02 | $1,314,175 | 11,318 | Mar 7, 2025 |
| Singhal Priya | Head of Development | Tax Withholding | 357 | $142.54 | $50,887 | 9,066 | Feb 10, 2025 |
| Murphy Nicole | Head of Pharm Ops and Tech | Tax Withholding | 670 | $142.54 | $95,502 | 14,055 | Feb 10, 2025 |
| MCDONNELL MICHAEL R | EVP, Chief Financial Officer | Tax Withholding | 1,371 | $142.54 | $195,422 | 24,341 | Feb 10, 2025 |
| Kramer Robin | Chief Accounting Officer | Tax Withholding | 245 | $142.54 | $34,922 | 8,012 | Feb 10, 2025 |
| Gregory Ginger | EVP, Human Resources | Tax Withholding | 634 | $142.54 | $90,370 | 17,598 | Feb 10, 2025 |
| ALEXANDER SUSAN H | EVP Chief Legal Officer | Tax Withholding | 807 | $142.54 | $115,030 | 36,265 | Feb 10, 2025 |
| Izzar Rachid | Head of Global Product Strat. | Tax Withholding | 445 | $142.54 | $63,430 | 8,553 | Feb 10, 2025 |
| Izzar Rachid | Head of Global Product Strat. | Tax Withholding | 565 | $141.35 | $79,863 | 6,059 | Feb 7, 2025 |
| MCDONNELL MICHAEL R | EVP, Chief Financial Officer | Tax Withholding | 786 | $141.35 | $111,101 | 20,955 | Feb 7, 2025 |
| Viehbacher Christopher | President and CEO | Option Exercise | 9,008 | — | — | 16,008 | Feb 7, 2025 |
| Grogan Jane | Head of Research | Option Exercise | 1,385 | — | — | 1,876 | Feb 7, 2025 |
| Keeney Adam | Head of Corporate Development | Option Exercise | 1,801 | — | — | 2,463 | Feb 7, 2025 |
| Kramer Robin | Chief Accounting Officer | Option Exercise | 703 | — | — | 7,667 | Feb 7, 2025 |
| Murphy Nicole | Head of Pharm Ops and Tech | Tax Withholding | 620 | $141.35 | $87,637 | 11,116 | Feb 7, 2025 |
| Singhal Priya | Head of Development | Tax Withholding | 681 | $141.35 | $96,259 | 8,211 | Feb 7, 2025 |
| Gregory Ginger | EVP, Human Resources | Option Exercise | 1,801 | — | — | 16,633 | Feb 7, 2025 |
| ALEXANDER SUSAN H | EVP Chief Legal Officer | Tax Withholding | 643 | $141.35 | $90,888 | 33,148 | Feb 7, 2025 |
| Singhal Priya | Head of Development | Option Exercise | 1,828 | — | — | 7,254 | Jan 31, 2025 |
| Singhal Priya | Head of Development | Option Exercise | 426 | — | — | 5,742 | Dec 9, 2024 |
| Kramer Robin | Chief Accounting Officer | Option Exercise | 351 | — | — | 6,578 | Dec 6, 2024 |
| ALEXANDER SUSAN H | EVP Chief Legal Officer | Gift | 20,082 | — | — | 20,082 | Nov 5, 2024 |
| Grogan Jane | Head of Research | Tax Withholding | 204 | $173.79 | $35,453 | 491 | Nov 1, 2024 |
| Singhal Priya | Head of Development | Sale | 431 | $204.22 | $88,019 | 5,316 | Aug 30, 2024 |
| SHERWIN STEPHEN A | — | Award / Grant | 1,340 | — | — | 20,078 | Jun 21, 2024 |
| Mantas Jesus B | — | Award / Grant | 1,340 | — | — | 7,388 | Jun 21, 2024 |
| Rowinsky Eric K | — | Award / Grant | 1,340 | — | — | 21,969 | Jun 21, 2024 |
| LANGER SUSAN | — | Award / Grant | 1,340 | — | — | 2,759 | Jun 21, 2024 |
| Patolawala Monish D | — | Award / Grant | 1,340 | — | — | 1,340 | Jun 21, 2024 |
| HAWKINS WILLIAM A | — | Award / Grant | 1,340 | — | — | 6,490 | Jun 21, 2024 |
| Freire Maria C | — | Award / Grant | 1,340 | — | — | 4,445 | Jun 21, 2024 |
| DORSA CAROLINE | — | Award / Grant | 1,785 | — | — | 26,607 | Jun 21, 2024 |
| Keeney Adam | Head of Corporate Development | Tax Withholding | 276 | $216.13 | $59,652 | 662 | May 1, 2024 |