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 |
|---|---|---|---|---|
| SHARP PHILLIP A | Director | 470,278 | 2009-06-03 | A |
| MULLEN JAMES C | Director | 122,896 | 2010-06-08 | F |
| PICKETT CECIL B | Director | 101,257 | 2009-10-02 | F |
| ADELMAN BURT A | Officer | 73,269 | 2007-10-15 | M |
| Vounatsos Michel | Director | 70,007.19 | 2022-02-18 | M |
| Hasnain Faheem | Director | 62,291.22 | 2008-07-09 | M |
| SCANGOS GEORGE A | Director | 54,779 | 2016-07-21 | S |
| HASLER HANS PETER | Director | 53,261 | 2009-02-24 | A |
| ALEXANDER SUSAN H | Officer | 43,321 | 2026-02-06 | M |
| BELZER ALAN | Director | 41,500 | 2007-05-25 | M |
| Cox John | Director | 39,045.24 | 2016-04-01 | A |
| Kowolenko Michael | Officer | 38,630.86 | 2007-07-25 | M |
| Viehbacher Christopher | Director · Officer | 36,548 | 2026-02-06 | M |
| DORSA CAROLINE | Director | 31,002 | 2025-06-17 | A |
| Hamm Robert A | Officer | 30,763.41 | 2010-04-23 | S |
| Rowinsky Eric K | Director | 25,844 | 2026-06-09 | A |
| McDonnell Michael R. | Director | 25,712 | 2025-02-10 | M |
| DUNN JOHN MICHAEL | Officer | 24,752.4 | 2009-02-24 | A |
| SCHNEIER CRAIG ERIC | Officer | 23,962.28 | 2011-03-01 | M |
| Gregory Ginger | Officer | 23,490.767 | 2026-02-06 | M |
| MATSUI CONNIE | Director | 22,837.11 | 2007-02-12 | A |
| WIGGINS MARK C | Officer | 22,780.28 | 2008-09-26 | S |
| LYTTON MICHAEL | Officer | 21,104 | 2010-03-02 | A |
| PANGIA ROBERT W | Director | 20,632 | 2020-06-03 | A |
| Murphy Nicole | Officer | 19,611.041 | 2026-02-12 | P |
| KELLOGG PETER N | Director | 18,966.11 | 2007-03-20 | S |
| YOUNG WILLIAM | Director | 18,509 | 2014-01-08 | S |
| SHERWIN STEPHEN A | Director | 15,193 | 2026-06-09 | A |
| Mulligan Richard | Director | 15,099 | 2022-06-15 | A |
| DENNER ALEXANDER J | Director | 15,099 | 2022-06-15 | A |
| LEAMING NANCY | Director | 13,763 | 2021-07-01 | A |
| Pawlicki Raymond | Officer | 12,710.38 | 2013-11-22 | M |
| Kramer Robin | Officer | 12,534.748 | 2026-02-06 | M |
| Singhal Priya | Officer | 12,115.143 | 2026-02-06 | M |
| WILLIAMS DOUGLAS E | Director | 11,817 | 2015-06-19 | S |
| Izzar Rachid | Officer | 11,786 | 2026-02-06 | M |
| Mantas Jesus B | Director | 11,263 | 2026-06-09 | A |
| ROSS BRUCE | Director | 10,900 | 2010-06-08 | S |
| Clancy Paul J | Director | 10,813 | 2017-04-25 | S |
| MacLean Michael F | Director | 10,681.48 | 2010-10-01 | F |
| HAWKINS WILLIAM A | Director | 10,365 | 2026-06-09 | A |
| Sandrock Alfred | Director · Officer | 10,169.11 | 2021-06-07 | S |
| PAPADOPOULOS STELIOS | Director | 10,095 | 2022-06-15 | A |
| Karaboutis Adriana | Director | 9,237 | 2017-02-28 | M |
| SCHENK LYNN | Director | 9,032 | 2019-06-19 | A |
| Freire Maria C | Director | 8,820 | 2026-06-09 | A |
| Kingsley Stuart A | Officer | 8,771 | 2015-02-12 | M |
| Holtzman Steven H | Director | 8,599 | 2016-02-23 | M |
| Ehlers Michael D | Officer | 8,525.22 | 2019-06-01 | M |
| DiPietro Kenneth | Officer | 8,260 | 2017-02-28 | M |
| Guindo Chirfi | Officer | 8,243 | 2022-02-18 | M |
| Posner Brian S | Director | 8,175 | 2021-07-01 | A |
| McKenzie Paul | Officer | 7,487.63 | 2019-03-01 | M |
| Keeney Adam | Officer | 6,820 | 2026-05-01 | M |
| LANGER SUSAN | Director | 6,634.1 | 2026-06-09 | A |
| DEKKERS MARIJN E | Director | 6,595 | 2009-06-03 | A |
| BEST LAWRENCE C | Director | 5,600 | 2008-06-19 | A |
| GLASSBERG ALAN | Director | 5,600 | 2008-06-19 | A |
| Patolawala Monish D | Director | 5,215 | 2026-06-09 | A |
| Granata Francesco | Officer | 5,198 | 2012-02-01 | M |
| Galdes Alphonse | Officer | 5,064.13 | 2022-01-19 | A |
| COVINO GREGORY F | Officer | 4,772.36 | 2018-02-23 | M |
| Gagnon Robert E. | Director | 4,716 | 2012-02-28 | S |
| Grogan Jane | Officer | 4,642 | 2026-02-06 | M |
| Pangalos Menelas N | Director | 3,875 | 2026-06-09 | A |
| CAPELLO JEFFREY D | Director | 3,732 | 2020-02-12 | M |
| Artavanis-Tsakonas Spyridon | Officer | 3,608.97 | 2016-04-02 | M |
| Minor Lloyd | Director | 3,282 | 2026-08-03 | S |
| Koppel Adam | 10%+ Owner · Director | 2,402.11 | 2016-06-06 | S |
| JONES WILLIAM D /CA/ | Director | 2,145 | 2022-06-15 | A |
| Godbout Sean | Officer | 1,466.985 | 2026-10-02 | M |
| GOOD MARY L | Director | 1,250 | 2007-05-25 | M |
| KELLER THOMAS F | Director | 1,250 | 2007-10-15 | S |
| Karp Daniel | Officer | 1,224.39 | 2020-02-12 | M |
| Kress Jean-Paul | Officer | 0 | 2017-06-14 | — |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-02 | Godbout Sean | Option exercise (derivative) | 27 | $0.00 | 0 |
| 2026-10-02 | Godbout Sean | Tax withholding | 8 | $219.88 | 1,458.985 |
| 2026-10-02 | Godbout Sean | Option exercise | 27 | $0.00 | 1,466.985 |
| 2026-10-01 | Godbout Sean | Grant / award (derivative) | 985 | $0.00 | 985 |
| 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 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.