BIOGEN INC. (BIIB)

Latest Insider Confidence Score

2026Q1

43.2
Bearish

Company insider confidence (by quarter)

2014Q1 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Biogen Inc. 10% Owner 17,652,466 Sep 28, 2023
Biogen MA Inc. 10% Owner 17,652,466 Sep 28, 2023
Cox John EVP Pharmaceutical Oper & Tech 39,045.24 Apr 5, 2016
Dorsa Caroline Director 31,002 Jun 18, 2025
Rowinsky Eric K Director 24,339 Jun 18, 2025

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Feb 13, 2026 Feb 17, 2026 Viehbacher Christopher CEO Neutral 52.5 - 0.00% ✗ -
Feb 13, 2026 Feb 17, 2026 Singhal Priya Head of Development Neutral 52.5 - 0.00% ✗ -
Feb 12, 2026 Feb 17, 2026 Murphy Nicole Head of Pharm Ops and Tech Buy 47.5 +3 0.02% ✗ $585.1
Feb 13, 2026 Feb 17, 2026 Kramer Robin CFO Neutral 52.5 - 0.00% ✗ -
Feb 13, 2026 Feb 17, 2026 Keeney Adam Head of Corporate Development Neutral 52.5 - 0.00% ✗ -
Feb 13, 2026 Feb 17, 2026 Izzar Rachid Head of Global Product Strat. Neutral 52.5 - 0.00% ✗ -
Feb 13, 2026 Feb 17, 2026 Grogan Jane Head of Research Neutral 52.5 - 0.00% ✗ -
Feb 13, 2026 Feb 17, 2026 Gregory Ginger EVP, Human Resources Neutral 52.5 - 0.00% ✗ -
Feb 13, 2026 Feb 17, 2026 Godbout Sean Chief Accounting Officer Neutral 52.5 - 0.00% ✗ -
Feb 13, 2026 Feb 17, 2026 ALEXANDER SUSAN H EVP Chief Legal Officer Neutral 52.5 - 0.00% ✗ -
Feb 6, 2026 Feb 10, 2026 Viehbacher Christopher CEO Sell 17.5 -10,980 -17.71% ✗ $2.2M
Feb 6, 2026 Feb 10, 2026 Singhal Priya Head of Development Sell 17.5 -5,128 -16.38% ✗ $1M
Feb 6, 2026 Feb 10, 2026 Murphy Nicole Head of Pharm Ops and Tech Sell 20.0 -3,339 -6.12% ✗ $671.7K
Feb 6, 2026 Feb 10, 2026 Kramer Robin CFO Sell 20.0 -1,543 -5.05% ✗ $310.4K
Feb 6, 2026 Feb 10, 2026 Keeney Adam Head of Corporate Development Sell 20.0 -1,583 -14.31% ✗ $318.5K
Feb 6, 2026 Feb 10, 2026 Izzar Rachid Head of Global Product Strat. Sell 20.0 -2,038 -6.98% ✗ $410K
Feb 6, 2026 Feb 10, 2026 Grogan Jane Head of Research Sell 22.5 -991 -12.68% ✗ $199.4K
Feb 6, 2026 Feb 10, 2026 Gregory Ginger EVP, Human Resources Sell 20.0 -2,589 -4.09% ✗ $520.9K
Feb 6, 2026 Feb 10, 2026 Godbout Sean Chief Accounting Officer Sell 22.5 -359 -11.48% ✗ $72.2K
Feb 6, 2026 Feb 10, 2026 ALEXANDER SUSAN H EVP Chief Legal Officer Sell 20.0 -3,504 -2.48% ✗ $704.9K
Jan 30, 2026 Feb 3, 2026 Singhal Priya Head of Development Sell 22.5 -1,330 -17.50% ✗ $238.8K
Dec 1, 2025 Dec 3, 2025 Viehbacher Christopher CEO Sell 20.0 -3,404 -17.15% ✗ $605.2K
Oct 31, 2025 Nov 4, 2025 Grogan Jane Head of Research Sell 22.5 -337 -15.84% ✗ $52K
Oct 2, 2025 Oct 6, 2025 Godbout Sean Chief Accounting Officer Sell 27.5 -8 -1.59% ✗ $1.2K
Aug 29, 2025 Sep 2, 2025 Singhal Priya Head of Development Sell 22.5 -1,324 -18.66% ✗ $175.7K
Jul 8, 2025 Jul 16, 2025 Izzar Rachid Head of Global Product Strat. Sell 20.0 -2,223 -25.99% ✗ $300.1K
Jun 17, 2025 Jun 18, 2025 Pangalos Menelas N Director Neutral 52.5 - 0.00% ✗ -
Jun 17, 2025 Jun 18, 2025 Minor Lloyd Director Neutral 90.0 +2,370 100.00% ✗ -
Jun 17, 2025 Jun 18, 2025 Patolawala Monish D Director Neutral 90.0 +2,370 176.87% ✗ -
Jun 17, 2025 Jun 18, 2025 Mantas Jesus B Director Neutral 90.0 +2,370 32.08% ✗ -
Jun 17, 2025 Jun 18, 2025 HAWKINS WILLIAM A Director Neutral 90.0 +2,370 36.52% ✗ -
Jun 17, 2025 Jun 18, 2025 Freire Maria C Director Neutral 90.0 +2,370 53.32% ✗ -
Jun 17, 2025 Jun 18, 2025 Rowinsky Eric K Director Neutral 90.0 +2,370 10.79% ✗ -
Jun 17, 2025 Jun 18, 2025 SHERWIN STEPHEN A Director Neutral 90.0 +2,370 20.94% ✗ -
Jun 17, 2025 Jun 18, 2025 LANGER SUSAN Director Neutral 90.0 +2,370 85.90% ✗ -
Jun 17, 2025 Jun 18, 2025 DORSA CAROLINE Director Neutral 90.0 +3,160 11.35% ✗ -
May 19, 2025 May 20, 2025 Singhal Priya Head of Development Sell 20.0 -3,806 -41.22% ✗ $480.5K
May 1, 2025 May 5, 2025 Keeney Adam Head of Corporate Development Sell 22.5 -454 -16.00% ✗ $54.9K
May 2, 2025 May 5, 2025 DORSA CAROLINE Director Buy 87.5 +1,235 4.64% ✗ $151.6K
Apr 1, 2025 Apr 3, 2025 Godbout Sean Chief Accounting Officer Neutral 52.5 - 0.00% ✗ -
Mar 7, 2025 Mar 10, 2025 SHERWIN STEPHEN A Director Sell 17.5 -8,760 -43.63% ✗ $1.3M
Mar 10, 2025 Godbout Sean Chief Accounting Officer Neutral 52.5 - 0.00% ✗ -
Feb 10, 2025 Feb 12, 2025 Singhal Priya Head of Development Sell 22.5 -357 -3.79% ✗ $50.9K
Feb 10, 2025 Feb 12, 2025 Murphy Nicole Head of Pharm Ops and Tech Sell 22.5 -670 -4.55% ✗ $95.5K
Feb 10, 2025 Feb 12, 2025 MCDONNELL MICHAEL R CFO Sell 22.5 -1,371 -5.33% ✗ $195.4K
Feb 10, 2025 Feb 12, 2025 Kramer Robin Chief Accounting Officer Sell 26.3 -245 -2.97% ✗ $34.9K
Feb 10, 2025 Feb 12, 2025 Gregory Ginger EVP, Human Resources Sell 22.5 -634 -3.48% ✗ $90.4K
Feb 10, 2025 Feb 12, 2025 ALEXANDER SUSAN H EVP Chief Legal Officer Sell 22.5 -807 -1.41% ✗ $115K
Feb 10, 2025 Feb 12, 2025 Izzar Rachid Head of Global Product Strat. Sell 22.5 -445 -4.95% ✗ $63.4K
Feb 7, 2025 Feb 11, 2025 Izzar Rachid Head of Global Product Strat. Sell 22.5 -1,165 -16.13% ✗ $164.7K
Feb 7, 2025 Feb 10, 2025 MCDONNELL MICHAEL R CFO Sell 22.5 -1,502 -3.34% ✗ $212.3K
Feb 7, 2025 Feb 10, 2025 Viehbacher Christopher CEO Sell 20.0 -3,201 -20.00% ✗ $452.5K
Feb 7, 2025 Feb 10, 2025 Grogan Jane Head of Research Sell 22.5 -443 -23.61% ✗ $62.6K
Feb 7, 2025 Feb 10, 2025 Keeney Adam Head of Corporate Development Sell 22.5 -563 -22.86% ✗ $79.6K
Feb 6, 2025 Feb 10, 2025 Izzar Rachid Head of Global Product Strat. Neutral 52.5 - 0.00% ✗ -
Feb 7, 2025 Feb 10, 2025 Kramer Robin Chief Accounting Officer Sell 22.5 -476 -3.20% ✗ $67.3K
Feb 7, 2025 Feb 10, 2025 Murphy Nicole Head of Pharm Ops and Tech Sell 22.5 -1,223 -4.93% ✗ $172.9K
Feb 7, 2025 Feb 10, 2025 Singhal Priya Head of Development Sell 22.5 -681 -7.66% ✗ $96.3K
Feb 7, 2025 Feb 10, 2025 Gregory Ginger EVP, Human Resources Sell 22.5 -1,040 -3.26% ✗ $147K
Feb 7, 2025 Feb 10, 2025 ALEXANDER SUSAN H EVP Chief Legal Officer Sell 22.5 -1,234 -1.39% ✗ $174.4K
Jan 31, 2025 Feb 3, 2025 Singhal Priya Head of Development Sell 22.5 -578 -7.97% ✗ $83.2K
Jan 7, 2025 Pangalos Menelas N Director Neutral 52.5 - 0.00% ✗ -
Dec 6, 2024 Dec 9, 2024 Singhal Priya Head of Development Sell 26.3 -316 -5.50% ✗ $49.8K
Dec 6, 2024 Dec 9, 2024 Kramer Robin Chief Accounting Officer Sell 26.3 -170 -2.58% ✗ $26.8K
Nov 5, 2024 Nov 7, 2024 ALEXANDER SUSAN H EVP Chief Legal Officer Neutral 52.5 - 0.00% ✗ -
Nov 1, 2024 Nov 4, 2024 Grogan Jane Head of Research Sell 26.3 -204 -29.35% ✗ $35.5K
Oct 7, 2024 Minor Lloyd Director Neutral 52.5 - 0.00% ✗ -
Aug 30, 2024 Sep 5, 2024 Singhal Priya Head of Development Sell 20.0 -1,238 -18.89% ✗ $253.3K
Jun 21, 2024 Jun 25, 2024 SHERWIN STEPHEN A Director Neutral 85.0 +1,340 7.15% ✗ -
Jun 21, 2024 Jun 25, 2024 Mantas Jesus B Director Neutral 90.0 +1,340 22.16% ✗ -
Jun 21, 2024 Jun 25, 2024 Rowinsky Eric K Director Neutral 85.0 +1,340 6.50% ✗ -
Jun 21, 2024 Jun 25, 2024 LANGER SUSAN Director Neutral 90.0 +1,340 94.43% ✗ -
Jun 21, 2024 Jun 25, 2024 Patolawala Monish D Director Neutral 90.0 +1,340 100.00% ✗ -
Jun 21, 2024 Jun 25, 2024 HAWKINS WILLIAM A Director Neutral 90.0 +1,340 26.02% ✗ -
Jun 21, 2024 Jun 25, 2024 Freire Maria C Director Neutral 90.0 +1,340 43.16% ✗ -
Jun 21, 2024 Jun 25, 2024 DORSA CAROLINE Director Neutral 85.0 +1,785 7.19% ✗ -
May 1, 2024 May 3, 2024 Keeney Adam Head of Corporate Development Sell 22.5 -276 -29.42% ✗ $59.7K
Apr 2, 2024 Apr 3, 2024 Singhal Priya Head of Development Sell 26.3 -93 -1.87% ✗ $19.8K
Apr 1, 2024 Apr 3, 2024 Murphy Nicole Head of Pharm Ops and Tech Sell 26.3 -117 -1.20% ✗ $25.1K
Feb 22, 2024 Feb 26, 2024 Singhal Priya Head of Development Sell 22.5 -262 -5.09% ✗ $58K
Feb 16, 2024 Feb 21, 2024 ALEXANDER SUSAN H EVP Chief Legal Officer Sell 20.0 -2,437 -2.32% ✗ $533.9K
Feb 16, 2024 Feb 21, 2024 Gregory Ginger EVP, Human Resources Sell 20.0 -2,264 -7.90% ✗ $496K
Feb 16, 2024 Feb 21, 2024 Izzar Rachid Head of Global Product Strat. Sell 22.5 -952 -4.76% ✗ $208.6K
Feb 16, 2024 Feb 21, 2024 Kramer Robin Chief Accounting Officer Sell 22.5 -396 -3.16% ✗ $86.8K
Feb 16, 2024 Feb 21, 2024 MCDONNELL MICHAEL R CFO Sell 20.0 -3,438 -8.34% ✗ $753.2K
Feb 16, 2024 Feb 21, 2024 Murphy Nicole Head of Pharm Ops and Tech Sell 22.5 -610 -3.17% ✗ $133.6K
Feb 16, 2024 Feb 21, 2024 Singhal Priya Head of Development Sell 22.5 -576 -3.60% ✗ $126.5K
Feb 15, 2024 Feb 20, 2024 Rowinsky Eric K Director Buy 82.5 +455 2.26% ✗ $101.3K
Feb 9, 2024 Feb 13, 2024 Gregory Ginger EVP, Human Resources Sell 22.5 -634 -5.38% ✗ $152.8K
Feb 9, 2024 Feb 13, 2024 Singhal Priya Head of Development Sell 22.5 -793 -14.94% ✗ $190.5K
Feb 9, 2024 Feb 13, 2024 Murphy Nicole Head of Pharm Ops and Tech Sell 22.5 -761 -7.99% ✗ $183.4K
Feb 9, 2024 Feb 13, 2024 MCDONNELL MICHAEL R CFO Sell 20.0 -1,431 -8.15% ✗ $344.8K
Feb 9, 2024 Feb 13, 2024 Kramer Robin Chief Accounting Officer Sell 22.5 -245 -4.44% ✗ $59K
Feb 9, 2024 Feb 13, 2024 Izzar Rachid Head of Global Product Strat. Sell 22.5 -445 -4.90% ✗ $107.2K
Feb 9, 2024 Feb 13, 2024 ALEXANDER SUSAN H EVP Chief Legal Officer Sell 22.5 -938 -1.88% ✗ $226K
Feb 8, 2024 Feb 9, 2024 ALEXANDER SUSAN H EVP Chief Legal Officer Sell 22.5 -655 -1.36% ✗ $157.4K
Feb 8, 2024 Feb 9, 2024 Gregory Ginger EVP, Human Resources Sell 22.5 -498 -4.92% ✗ $119.7K
Feb 7, 2024 Feb 9, 2024 Grogan Jane Head of Research Neutral 52.5 - 0.00% ✗ -
Feb 8, 2024 Feb 9, 2024 Izzar Rachid Head of Global Product Strat. Sell 22.5 -621 -7.59% ✗ $149.2K
Feb 7, 2024 Feb 9, 2024 Keeney Adam Head of Corporate Development Neutral 52.5 - 0.00% ✗ -