BIOGEN INC (BIIB) Stock Ownership and Short Interest
USA - NASDAQ:BIIB - US09062X1037 - Common Stock
168.83 USD
+4.15 (+2.52%)
168.83 USD
0 (0%)
| Shares Outstanding | 146.61M |
| Float | 146.36M |
| Float Short Interest Percentage | 3.86% |
| Owners (insider) | 0.14% |
| Owners (institutional) | 92.49% |
| Owners (insider) change | 5.21% |
| Owners (institutional) change | 1.97% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Oct 31, 2025 | Grogan Jane | Option Excercise | 695 | 0.00 | $ 0.00 |
| Oct 31, 2025 | Grogan Jane | Option Excercise | 337 | 154.27 | $ 51,988.99 |
| Oct 2, 2025 | Godbout Sean | Option Excercise | 26 | 0.00 | $ 0.00 |
| Oct 2, 2025 | Godbout Sean | Option Excercise | 8 | 155.25 | $ 1,242.00 |
| Sep 2, 2025 | Singhal Priya | Open Market Sale | 517 | 133.55 | $ 69,045.35 |
| Aug 29, 2025 | Singhal Priya | Option Excercise | 1669 | 0.00 | $ 0.00 |
| Aug 29, 2025 | Singhal Priya | Option Excercise | 807 | 132.22 | $ 106,701.54 |
| Jun 17, 2025 | Freire Maria C | Grant | 2370 | 0.00 | $ 0.00 |
| Jun 17, 2025 | Rowinsky Eric K | Grant | 2370 | 0.00 | $ 0.00 |
| Jun 17, 2025 | SHERWIN STEPHEN A | Grant | 2370 | 0.00 | $ 0.00 |
| Jun 17, 2025 | LANGER SUSAN | Grant | 2370 | 0.00 | $ 0.00 |
| Jun 17, 2025 | DORSA CAROLINE | Grant | 3160 | 0.00 | $ 0.00 |
| Jun 17, 2025 | Minor Lloyd | Grant | 2370 | 0.00 | $ 0.00 |
| Jun 17, 2025 | Patolawala Monish D | Grant | 2370 | 0.00 | $ 0.00 |
| Jun 17, 2025 | Mantas Jesus B | Grant | 2370 | 0.00 | $ 0.00 |
| Jun 17, 2025 | HAWKINS WILLIAM A | Grant | 2370 | 0.00 | $ 0.00 |
| May 19, 2025 | Singhal Priya | Open Market Sale | 3806 | 126.25 | $ 480,507.50 |
| May 2, 2025 | DORSA CAROLINE | Open Market Purchase | 1235 | 122.72 | $ 151,559.20 |
| May 1, 2025 | Keeney Adam | Option Excercise | 454 | 120.93 | $ 54,902.22 |
| May 1, 2025 | Keeney Adam | Option Excercise | 938 | 0.00 | $ 0.00 |
| Mar 7, 2025 | SHERWIN STEPHEN A | Open Market Sale | 8760 | 150.02 | $ 1,314,141.91 |
| Feb 10, 2025 | Singhal Priya | Option Excercise | 1212 | 0.00 | $ 0.00 |
| Feb 10, 2025 | Singhal Priya | Option Excercise | 357 | 142.54 | $ 50,886.78 |
| Feb 10, 2025 | Murphy Nicole | Option Excercise | 2272 | 0.00 | $ 0.00 |
| Feb 10, 2025 | Murphy Nicole | Option Excercise | 670 | 142.54 | $ 95,501.80 |
| Feb 10, 2025 | MCDONNELL MICHAEL R | Option Excercise | 3257 | 0.00 | $ 0.00 |
| Feb 10, 2025 | MCDONNELL MICHAEL R | Option Excercise | 1371 | 142.54 | $ 195,422.34 |
| Feb 10, 2025 | Kramer Robin | Option Excercise | 834 | 0.00 | $ 0.00 |
| Feb 10, 2025 | Kramer Robin | Option Excercise | 245 | 142.54 | $ 34,922.30 |
| Feb 10, 2025 | Gregory Ginger | Option Excercise | 2159 | 0.00 | $ 0.00 |
| Feb 10, 2025 | Gregory Ginger | Option Excercise | 634 | 142.54 | $ 90,370.36 |
| Feb 10, 2025 | ALEXANDER SUSAN H | Option Excercise | 2575 | 0.00 | $ 0.00 |
| Feb 10, 2025 | ALEXANDER SUSAN H | Option Excercise | 807 | 142.54 | $ 115,029.78 |
| Feb 10, 2025 | Izzar Rachid | Option Excercise | 1515 | 0.00 | $ 0.00 |
| Feb 10, 2025 | Izzar Rachid | Option Excercise | 445 | 142.54 | $ 63,430.30 |
| Feb 7, 2025 | MCDONNELL MICHAEL R | Option Excercise | 4551 | 0.00 | $ 0.00 |
| Feb 7, 2025 | MCDONNELL MICHAEL R | Option Excercise | 1502 | 141.35 | $ 212,307.70 |
| Feb 7, 2025 | Viehbacher Christopher | Option Excercise | 9008 | 0.00 | $ 0.00 |
| Feb 7, 2025 | Viehbacher Christopher | Option Excercise | 3201 | 141.35 | $ 452,461.35 |
| Feb 7, 2025 | Grogan Jane | Option Excercise | 1385 | 0.00 | $ 0.00 |
| Feb 7, 2025 | Grogan Jane | Option Excercise | 443 | 141.35 | $ 62,618.05 |
| Feb 7, 2025 | Keeney Adam | Option Excercise | 1801 | 0.00 | $ 0.00 |
| Feb 7, 2025 | Keeney Adam | Option Excercise | 563 | 141.35 | $ 79,580.05 |
| Feb 7, 2025 | Kramer Robin | Option Excercise | 1491 | 0.00 | $ 0.00 |
| Feb 7, 2025 | Kramer Robin | Option Excercise | 476 | 141.35 | $ 67,282.60 |
| Feb 7, 2025 | Murphy Nicole | Option Excercise | 4042 | 0.00 | $ 0.00 |
| Feb 7, 2025 | Murphy Nicole | Option Excercise | 1223 | 141.35 | $ 172,871.05 |
| Feb 7, 2025 | Singhal Priya | Option Excercise | 2216 | 0.00 | $ 0.00 |
| Feb 7, 2025 | Singhal Priya | Option Excercise | 681 | 141.35 | $ 96,259.35 |
| Feb 7, 2025 | Izzar Rachid | Option Excercise | 3844 | 0.00 | $ 0.00 |
| Feb 7, 2025 | Izzar Rachid | Option Excercise | 1165 | 141.35 | $ 164,672.75 |
| Feb 7, 2025 | Gregory Ginger | Option Excercise | 3436 | 0.00 | $ 0.00 |
| Feb 7, 2025 | Gregory Ginger | Option Excercise | 1040 | 141.35 | $ 147,004.00 |
| Feb 7, 2025 | ALEXANDER SUSAN H | Option Excercise | 4130 | 0.00 | $ 0.00 |
| Feb 7, 2025 | ALEXANDER SUSAN H | Option Excercise | 1234 | 141.35 | $ 174,425.90 |
| Jan 31, 2025 | Singhal Priya | Option Excercise | 1828 | 0.00 | $ 0.00 |
| Jan 31, 2025 | Singhal Priya | Option Excercise | 578 | 143.93 | $ 83,191.54 |
| Dec 9, 2024 | Singhal Priya | Open Market Sale | 110 | 157.21 | $ 17,293.10 |
| Dec 6, 2024 | Singhal Priya | Option Excercise | 426 | 0.00 | $ 0.00 |
| Dec 6, 2024 | Singhal Priya | Option Excercise | 206 | 157.78 | $ 32,502.68 |
| Dec 6, 2024 | Kramer Robin | Option Excercise | 351 | 0.00 | $ 0.00 |
| Dec 6, 2024 | Kramer Robin | Option Excercise | 170 | 157.78 | $ 26,822.60 |