Biogen Inc. (BIIB) Insider Ownership

Historic Insider Ownership Trends

As of March 23, 2026, the three largest insider holders of BIIB 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).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
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
Michael R Mcdonnell Evp, Chief Financial Officer 24,341 0 12 Feb, 2025
Eric K Rowinsky 24,339 0 18 Jun, 2025
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
Alexander J Denner 15,099 0 17 Jun, 2022
Richard Mulligan 15,099 0 17 Jun, 2022
Nancy Leaming 13,763 0 02 Jul, 2021
Stephen A Sherwin 13,688 0 18 Jun, 2025
Robin Kramer Chief Financial Officer 11,472 0 10 Feb, 2026
Rachid Izzar Head Of Global Product Strat. 11,011 0 10 Feb, 2026
Alfred Sandrock Head Of Research Development 10,169 0 09 Jun, 2021
Stelios Papadopoulos 10,095 0 17 Jun, 2022
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
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
Adam Keeney Head Of Corporate Development 5,881 0 10 Feb, 2026
Susan Langer 5,129 0 18 Jun, 2025
Alphonse Galdes Evp Pharmaceutical Oper Tech 5,064 0 21 Jan, 2022
Jane Grogan Head Of Research 4,058 0 10 Feb, 2026
Monish D Patolawala 3,710 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 1,215 0 10 Feb, 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.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
13 Feb, 2026 Robin Kramer Restricted Stock Unit A 8,450 $0.00 8,450 D A
13 Feb, 2026 Adam Keeney Restricted Stock Unit A 8,025 $0.00 8,025 D A
13 Feb, 2026 Priya Singhal Restricted Stock Unit A 10,560 $0.00 10,560 D A
13 Feb, 2026 Jane Grogan Restricted Stock Unit A 8,450 $0.00 8,450 D A
12 Feb, 2026 Nicole Murphy Common Stock A 3 $195.04 19,611 D P
13 Feb, 2026 Ginger Gregory Restricted Stock Unit A 8,025 $0.00 8,025 D A
13 Feb, 2026 Susan H Alexander Restricted Stock Unit A 8,450 $0.00 8,450 D A
13 Feb, 2026 Sean Godbout Restricted Stock Unit A 1,800 $0.00 1,800 D A
13 Feb, 2026 Rachid Izzar Restricted Stock Unit A 7,390 $0.00 7,390 D A
13 Feb, 2026 Christopher Viehbacher Restricted Stock Unit A 38,015 $0.00 38,015 D A
13 Feb, 2026 Nicole Murphy Restricted Stock Unit A 10,560 $0.00 10,560 D A
06 Feb, 2026 Robin Kramer Common Stock A 789 $0.00 8,801 D M
06 Feb, 2026 Jane Grogan Common Stock A 1,385 $0.00 3,176 D M
06 Feb, 2026 Nicole Murphy Common Stock A 2,102 $0.00 16,324 D M
06 Feb, 2026 Adam Keeney Common Stock A 1,802 $0.00 4,186 D M
06 Feb, 2026 Christopher Viehbacher Common Stock A 9,008 $0.00 25,451 D M
06 Feb, 2026 Ginger Gregory Common Stock A 1,635 $0.00 19,400 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 Priya Singhal Common Stock A 2,217 $0.00 8,488 D M