SEC Form 4 · Updated Daily
BIIB
— BIOGEN 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 |
|---|---|---|---|---|
| ALEXANDER SUSAN H | Officer | 41,807 | 2026-02-06 | F |
| Viehbacher Christopher | Director · Officer | 29,924 | 2026-02-06 | F |
| Rowinsky Eric K | Director | 25,844 | 2026-06-09 | A |
| Gregory Ginger | Officer | 22,358.767 | 2026-02-06 | F |
| Murphy Nicole | Officer | 19,611.041 | 2026-02-12 | P |
| SHERWIN STEPHEN A | Director | 15,193 | 2026-06-09 | A |
| Kramer Robin | Officer | 11,471.748 | 2026-02-06 | F |
| Mantas Jesus B | Director | 11,263 | 2026-06-09 | A |
| Izzar Rachid | Officer | 11,011 | 2026-02-06 | F |
| HAWKINS WILLIAM A | Director | 10,365 | 2026-06-09 | A |
| Freire Maria C | Director | 8,820 | 2026-06-09 | A |
| Singhal Priya | Officer | 8,043.143 | 2026-02-09 | S |
| LANGER SUSAN | Director | 6,634.1 | 2026-06-09 | A |
| Keeney Adam | Officer | 6,365 | 2026-05-01 | F |
| Patolawala Monish D | Director | 5,215 | 2026-06-09 | A |
| Grogan Jane | Officer | 4,058 | 2026-02-06 | F |
| Pangalos Menelas N | Director | 3,875 | 2026-06-09 | A |
| Minor Lloyd | Director | 2,689 | 2026-08-04 | S |
| Godbout Sean | Officer | 1,341.667 | 2026-04-01 | F |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-01 | Parini Michael | Grant / award (derivative) | 7,405 | $0.00 | 7,405 |
| 2026-08-04 | Minor Lloyd | Open-market sale | 593 | $200.96 | 2,689 |
| 2026-08-03 | Minor Lloyd | Open-market sale | 593 | $203.34 | 3,282 |
| 2026-06-09 | Freire Maria C | Grant / award | 2,005 | $0.00 | 8,820 |
| 2026-06-09 | Minor Lloyd | Grant / award | 1,505 | $0.00 | 3,875 |
| 2026-06-09 | Pangalos Menelas N | Option exercise (derivative) | 2,370 | $0.00 | 0 |
| 2026-06-09 | Pangalos Menelas N | Grant / award | 1,505 | $0.00 | 3,875 |
| 2026-06-09 | Pangalos Menelas N | Option exercise | 2,370 | $0.00 | 2,370 |
| 2026-06-09 | Patolawala Monish D | Grant / award | 1,505 | $0.00 | 5,215 |
| 2026-06-09 | LANGER SUSAN | Grant / award | 1,505 | $0.00 | 6,634.1 |
| 2026-06-09 | Mantas Jesus B | Grant / award | 1,505 | $0.00 | 11,263 |
| 2026-06-09 | Rowinsky Eric K | Grant / award | 1,505 | $0.00 | 25,844 |
| 2026-06-09 | SHERWIN STEPHEN A | Grant / award | 1,505 | $0.00 | 15,193 |
| 2026-06-09 | HAWKINS WILLIAM A | Grant / award | 1,505 | $0.00 | 10,365 |
| 2026-05-01 | Keeney Adam | Option exercise (derivative) | 939 | $0.00 | 0 |
| 2026-05-01 | Keeney Adam | Tax withholding | 455 | $187.06 | 6,365 |
| 2026-05-01 | Keeney Adam | Option exercise | 939 | $0.00 | 6,820 |
| 2026-04-01 | Godbout Sean | Option exercise (derivative) | 181 | $0.00 | 364 |
| 2026-04-01 | Godbout Sean | Tax withholding | 54 | $183.78 | 1,341.667 |
| 2026-04-01 | Godbout Sean | Option exercise | 181 | $0.00 | 1,395.667 |
| 2026-02-13 | ALEXANDER SUSAN H | Grant / award (derivative) | 8,450 | $0.00 | 8,450 |
| 2026-02-13 | Godbout Sean | Grant / award (derivative) | 1,800 | $0.00 | 1,800 |
| 2026-02-13 | Gregory Ginger | Grant / award (derivative) | 8,025 | $0.00 | 8,025 |
| 2026-02-13 | Grogan Jane | Grant / award (derivative) | 8,450 | $0.00 | 8,450 |
| 2026-02-13 | Izzar Rachid | Grant / award (derivative) | 7,390 | $0.00 | 7,390 |
| 2026-02-13 | Keeney Adam | Grant / award (derivative) | 8,025 | $0.00 | 8,025 |
| 2026-02-13 | Kramer Robin | Grant / award (derivative) | 8,450 | $0.00 | 8,450 |
| 2026-02-13 | Murphy Nicole | Grant / award (derivative) | 10,560 | $0.00 | 10,560 |
| 2026-02-13 | Singhal Priya | Grant / award (derivative) | 10,560 | $0.00 | 10,560 |
| 2026-02-13 | Viehbacher Christopher | Grant / award (derivative) | 38,015 | $0.00 | 38,015 |
| 2026-02-12 | Murphy Nicole | Open-market buy | 3 | $195.03 | 19,611.041 |
| 2026-02-09 | Singhal Priya | Open-market sale | 2,660 | $199.83 | 8,043.143 |
| 2026-02-06 | ALEXANDER SUSAN H | Option exercise (derivative) | 4,916 | $0.00 | 9,834 |
| 2026-02-06 | ALEXANDER SUSAN H | Option exercise (derivative) | 1,940 | $0.00 | 1,940 |
| 2026-02-06 | ALEXANDER SUSAN H | Option exercise (derivative) | 2,190 | $0.00 | 0 |
| 2026-02-06 | ALEXANDER SUSAN H | Tax withholding | 1,514 | $201.18 | 41,807 |
| 2026-02-06 | ALEXANDER SUSAN H | Option exercise | 4,916 | $0.00 | 43,321 |
| 2026-02-06 | ALEXANDER SUSAN H | Tax withholding | 931 | $201.18 | 38,405 |
| 2026-02-06 | ALEXANDER SUSAN H | Option exercise | 1,940 | $0.00 | 39,336 |
| 2026-02-06 | ALEXANDER SUSAN H | Tax withholding | 1,059 | $201.18 | 37,396 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.