Biogen BIIB Insider Ownership

NASDAQ BIIB
$210.68 -1.82 (-0.86%)
As of: Sep 9, 2026 · 3:59 PM EDT

Insider Holdings by Owner

381.78K Shares

Insider Ownership Statistics

as of 31 Mar, 2013
Insider Ownership
0.0023%
▲+0.0000% pp QoQ
Shares Held by Insiders
5.60K
filed for Mar 2013
■0.00% QoQ
Shares Outstanding
147.10Mn
147,100,000 shares
Direct Holdings
5.60K
Indirect: 0
Net Shares Traded (QoQ)
0
no net change in Mar 2013
Insiders Holding Shares
27
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Quarter ending 31 Mar, 2013

Biogen's top three insider shareholders as of September 09, 2026 are Michel Vounatsos (Chief Executive Officer, 67.26K shares), Susan H Alexander (Evp Chief Legal Officer, 41.81K shares), Christopher Viehbacher (President And Ceo, 29.92K shares).

Form 4 Holdings

Insiders Holding BIIB

Insiders 27
Shares held 381.78K
Of outstanding 0.260%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Michel Vounatsos Chief Executive Officer 67,261 0 67,261 17.6% 23 Feb, 2022
2 Susan H Alexander Evp Chief Legal Officer 41,807 0 41,807 11.0% 10 Feb, 2026
3 Christopher Viehbacher President And Ceo 29,924 0 29,924 7.8% 10 Feb, 2026
4 Eric K Rowinsky Director 25,844 0 25,844 6.8% 11 Jun, 2026
5 Ginger Gregory Evp, Human Resources 22,359 0 22,359 5.9% 10 Feb, 2026
6 Nicole Murphy Head Of Pharm Ops And Tech 19,611 0 19,611 5.1% 17 Feb, 2026
7 Stephen A Sherwin Director 15,193 0 15,193 4.0% 11 Jun, 2026
8 Alexander J Denner Director 15,099 0 15,099 4.0% 17 Jun, 2022
9 Richard Mulligan Director 15,099 0 15,099 4.0% 17 Jun, 2022
10 Nancy Leaming Director 13,763 0 13,763 3.6% 02 Jul, 2021
11 Robin Kramer Chief Financial Officer 11,472 0 11,472 3.0% 10 Feb, 2026
12 Jesus B Mantas Director 11,263 0 11,263 3.0% 11 Jun, 2026
13 Rachid Izzar Head Of Global Product Strat. 11,011 0 11,011 2.9% 10 Feb, 2026
14 William A Hawkins Director 10,365 0 10,365 2.7% 11 Jun, 2026
15 Stelios Papadopoulos Director 10,095 0 10,095 2.6% 17 Jun, 2022
16 Maria C Freire Director 8,820 0 8,820 2.3% 11 Jun, 2026
17 Priya Singhal Head Of Development 8,043 0 8,043 2.1% 10 Feb, 2026
18 Chirfi Guindo Head Of Glob Prod Strat Com 7,364 0 7,364 1.9% 23 Feb, 2022
19 Susan Langer Director 6,634 0 6,634 1.7% 11 Jun, 2026
20 Adam Keeney Head Of Corporate Development 6,365 0 6,365 1.7% 05 May, 2026
21 Monish D Patolawala Director 5,215 0 5,215 1.4% 11 Jun, 2026
22 Alphonse Galdes Evp Pharmaceutical Oper Tech 5,064 0 5,064 1.3% 21 Jan, 2022
23 Jane Grogan Head Of Research 4,058 0 4,058 1.1% 10 Feb, 2026
24 Menelas N Pangalos Director 3,875 0 3,875 1.0% 11 Jun, 2026
25 Lloyd Minor Director 2,689 0 2,689 0.7% 05 Aug, 2026
26 William D /Ca/ Jones Director 2,145 0 2,145 0.6% 17 Jun, 2022
27 Sean Godbout Chief Accounting Officer 1,342 0 1,342 0.4% 03 Apr, 2026

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

8,092 Insider Transactions

Source SEC Form 4
Latest quarter Mar 2013
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
03 Aug, 2026 Lloyd Minor Director Disposed S 593 $203.34 $120.58K 3,282 Direct
04 Aug, 2026 Lloyd Minor Director Disposed S 593 $200.96 $119.17K 2,689 Direct
09 Jun, 2026 Stephen A Sherwin Director Acquired A 1,505 $0.00 $0 15,193 Direct
09 Jun, 2026 Eric K Rowinsky Director Acquired A 1,505 $0.00 $0 25,844 Direct
09 Jun, 2026 Jesus B Mantas Director Acquired A 1,505 $0.00 $0 11,263 Direct
09 Jun, 2026 Susan Langer Director Acquired A 1,505 $0.00 $0 6,634 Direct
09 Jun, 2026 William A Hawkins Director Acquired A 1,505 $0.00 $0 10,365 Direct
09 Jun, 2026 Lloyd Minor Director Acquired A 1,505 $0.00 $0 3,875 Direct
09 Jun, 2026 Maria C Freire Director Acquired A 2,005 $0.00 $0 8,820 Direct
01 May, 2026 Adam Keeney Head Of Corporate Development Acquired M 939 $0.00 $0 6,820 Direct
01 May, 2026 Adam Keeney Head Of Corporate Development Disposed F 455 $187.06 $85.11K 6,365 Direct
01 May, 2026 Adam Keeney Head Of Corporate Development Disposed M 939 $0.00 $0 0 Direct
01 Apr, 2026 Sean Godbout Chief Accounting Officer Acquired M 181 $0.00 $0 1,396 Direct
01 Apr, 2026 Sean Godbout Chief Accounting Officer Acquired M 181 $0.00 $0 1,396 Direct
01 Apr, 2026 Sean Godbout Chief Accounting Officer Acquired M 181 $0.00 $0 1,396 Direct
01 Apr, 2026 Sean Godbout Chief Accounting Officer Acquired M 181 $0.00 $0 1,396 Direct
01 Apr, 2026 Sean Godbout Chief Accounting Officer Acquired M 181 $0.00 $0 1,396 Direct
01 Apr, 2026 Sean Godbout Chief Accounting Officer Disposed F 54 $183.78 $9.92K 1,342 Direct
01 Apr, 2026 Sean Godbout Chief Accounting Officer Disposed F 54 $183.78 $9.92K 1,342 Direct
01 Apr, 2026 Sean Godbout Chief Accounting Officer Disposed F 54 $183.78 $9.92K 1,342 Direct