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BIIB Insider Trading

Insider Ownership Percentage: 0.25%
Insider Buying (Last 12 Months): $585.09
Insider Selling (Last 12 Months): $665,664.20

Biogen Insider Trading History Chart

This chart shows the insider buying and selling history at Biogen by year and by quarter.

Skip ChartChart Data in Insider Trading History Table

Biogen Share Price & Price History

Current Price: $219.06
Price Change: ▲ Price Increase of +3.049 (1.41%)
As of 09/17/2026 03:58 PM ET

This chart shows the closing price history over time for BIIB up to the past year.

Skip Chart and Table DataPrice Data in Insider Trading History Table
Days: 30 | 90 | 365

Biogen Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
2/12/2026Nicole MurphyInsiderBuy3$195.03$585.0919,611View SEC Filing Icon  
2/9/2026Priya SinghalInsiderSell2,660$199.83$531,547.808,043View SEC Filing Icon  
2/2/2026Priya SinghalInsiderSell748$179.30$134,116.406,271View SEC Filing Icon  
9/2/2025Priya SinghalInsiderSell517$133.55$69,045.355,772View SEC Filing Icon  
7/8/2025Rachid IzzarInsiderSell2,223$135.00$300,105.006,330View SEC Filing Icon  
3/7/2025Stephen A SherwinDirectorSell8,760$150.02$1,314,175.2011,318View SEC Filing Icon  
9/3/2024Priya SinghalInsiderSell431$204.22$88,018.825,316View SEC Filing Icon  
4/2/2024Priya SinghalInsiderSell93$213.09$19,817.374,886View SEC Filing Icon  
2/22/2024Priya SinghalInsiderSell262$221.23$57,962.264,886View SEC Filing Icon  
2/16/2024Priya SinghalInsiderSell108$221.49$23,920.925,148View SEC Filing Icon  
2/15/2024Eric K. RowinskyDirectorBuy455$222.54$101,255.7020,629View SEC Filing Icon  
2/12/2024Priya SinghalInsiderSell419$239.45$100,329.554,516View SEC Filing Icon  
12/11/2023Priya SinghalInsiderSell110$248.00$27,280.003,464View SEC Filing Icon  
See Full Table

SEC Filings (Institutional Ownership Changes) for Biogen (NASDAQ:BIIB)

87.93% of Biogen stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

This chart shows the instiutional buying and selling at BIIB by year and by quarter.

Skip Institutional Buying and Selling Chart and Table DataRead Chart Data in Institutional Trading History Table

Biogen Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/16/2026IKE Capital LLC2,794$0.60M0.3%-12.5%0.002%Search for SEC Filing on Google Icon
9/9/2026Sequoia Financial Advisors LLC9,388$2.03M0.0%-5.7%0.006%Search for SEC Filing on Google Icon
9/9/2026Tidal Investments LLC63,842$13.79M0.0%+9.0%0.043%Search for SEC Filing on Google Icon
9/9/2026National Pension Service406,064$87.73M0.1%+1.1%0.275%Search for SEC Filing on Google Icon
9/9/2026Cidel Asset Management Inc.1,952$0.42M0.0%-8.3%0.001%Search for SEC Filing on Google Icon
9/9/2026Integrated Wealth Concepts LLC9,426$2.04M0.0%+23.8%0.006%Search for SEC Filing on Google Icon
9/9/2026NewEdge Advisors LLC15,037$3.25M0.0%+15.4%0.010%Search for SEC Filing on Google Icon
9/9/2026IFP Advisors Inc1,479$0.32M0.0%+28.5%0.001%Search for SEC Filing on Google Icon
9/9/2026Baird Financial Group Inc.15,360$3.32M0.0%+264.6%0.010%Search for SEC Filing on Google Icon
9/9/2026Beacon Investment Advisory Services Inc.12,229$2.64M0.1%-0.7%0.008%Search for SEC Filing on Google Icon
9/8/2026Allworth Financial LP8,033$1.74M0.0%+90.8%0.005%Search for SEC Filing on Google Icon
9/8/2026Arizona State Retirement System42,077$9.09M0.0%+5.6%0.028%Search for SEC Filing on Google Icon
9/8/2026Waverly Advisors LLC3,678$0.80M0.0%+16.7%0.002%Search for SEC Filing on Google Icon
9/8/2026Empirical Finance LLC5,240$1.13M0.0%+3.4%0.004%Search for SEC Filing on Google Icon
9/8/2026Nykredit A S37,134$8.02M0.0%N/A0.025%Search for SEC Filing on Google Icon
9/2/2026Range Advisory LLC929$0.20M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/27/2026Corient Private Wealth LP42,397$9.16M0.0%+14.7%0.029%Search for SEC Filing on Google Icon
8/26/2026Amundi1,516,831$327.73M0.1%+91.8%1.027%Search for SEC Filing on Google Icon
8/26/2026HighTower Advisors LLC47,099$10.18M0.0%-5.5%0.032%Search for SEC Filing on Google Icon
8/25/2026Advus Financial Partners LLC2,566$0.55M0.1%-2.1%0.002%Search for SEC Filing on Google Icon
8/25/2026Groupe la Francaise519$0.11M0.0%N/A0.000%Search for SEC Filing on Google Icon
8/23/2026Wedmont Private Capital3,012$0.60M0.0%+3.6%0.002%Search for SEC Filing on Google Icon
8/23/2026HB Wealth Management LLC6,176$1.33M0.0%+8.7%0.004%Search for SEC Filing on Google Icon
8/23/2026Saudi Central Bank10,273$2.22M0.0%+89.7%0.007%Search for SEC Filing on Google Icon
8/22/2026Noble Wealth Partners LLC1,340$0.29M0.3%N/A0.001%Search for SEC Filing on Google Icon
8/22/2026Syon Capital LLC3,492$0.75M0.0%+11.6%0.002%Search for SEC Filing on Google Icon
8/22/2026Premier Path Wealth Partners LLC2,786$0.60M0.1%-20.9%0.002%Search for SEC Filing on Google Icon
8/22/2026NEOS Investment Management LLC23,734$5.13M0.0%+13.9%0.016%Search for SEC Filing on Google Icon
8/21/2026Mason & Associates Inc1,038$0.22M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/21/2026Continuum Advisory LLC304$66K0.0%N/A0.000%Search for SEC Filing on Google Icon
8/21/2026Nykredit A S41,734$9.02M0.0%N/A0.028%Search for SEC Filing on Google Icon
8/21/2026B. Metzler seel. Sohn & Co. AG12,258$2.65M0.0%-58.8%0.008%Search for SEC Filing on Google Icon
8/21/2026Investors Research Corp1,641$0.36M0.1%-11.3%0.001%Search for SEC Filing on Google Icon
8/20/2026Proficio Capital Partners LLC2,701$0.58M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/20/2026Nwam LLC2,553$0.55M0.0%+123.8%0.002%Search for SEC Filing on Google Icon
8/20/2026Rehmann Capital Advisory Group1,236$0.27M0.0%+6.1%0.001%Search for SEC Filing on Google Icon
8/20/2026JNBA Financial Advisors422$91K0.0%-29.2%0.000%Search for SEC Filing on Google Icon
8/20/2026Sigma Planning Corp6,193$1.34M0.0%-14.0%0.004%Search for SEC Filing on Google Icon
8/20/2026Alyeska Investment Group L.P.932,374$201.45M0.5%+15.8%0.631%Search for SEC Filing on Google Icon
8/20/2026Northwestern Mutual Wealth Management Co.7,299$1.58M0.0%+3.6%0.005%Search for SEC Filing on Google Icon
8/20/2026Wedbush Securities Inc.1,164$0.25M0.0%+5.1%0.001%Search for SEC Filing on Google Icon
8/20/2026Greenleaf Trust6,491$1.40M0.0%+1.9%0.004%Search for SEC Filing on Google Icon
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC1,255,168$271.19M0.0%-8.9%0.850%Search for SEC Filing on Google Icon
8/19/2026New Mexico Educational Retirement Board7,224$1.56M0.0%+5.9%0.005%Search for SEC Filing on Google Icon
8/19/2026Royal London Asset Management Ltd.64,751$13.99M0.0%+0.8%0.044%Search for SEC Filing on Google Icon
8/19/2026Mufg Securities Americas Inc.4,447$0.96M0.0%+9.5%0.003%Search for SEC Filing on Google Icon
8/19/2026Investors Asset Management of Georgia Inc. GA ADV1,032$0.22M0.1%N/A0.001%Search for SEC Filing on Google Icon
8/19/2026Van ECK Associates Corp98,109$21.20M0.0%-90.9%0.066%Search for SEC Filing on Google Icon
8/19/2026Nissay Asset Management Corp Japan185,301$40.04M0.2%+522.6%0.125%Search for SEC Filing on Google Icon
8/19/2026Wellington Management Group LLP3,117,469$673.56M0.1%+5.3%2.110%Search for SEC Filing on Google Icon
8/19/2026Kingsview Wealth Management LLC1,171$0.25M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/18/2026Beacon Pointe Advisors LLC4,544$0.98M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/18/2026Pin Oak Investment Advisors Inc.821$0.18M0.1%N/A0.001%Search for SEC Filing on Google Icon
8/18/2026Livforsakringsbolaget Skandia Omsesidigt1,330$0.29M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/18/2026Rakuten Investment Management Inc.24,097$5.22M0.0%N/A0.016%Search for SEC Filing on Google Icon
8/18/2026Palo Alto Investors LP140,279$30.31M0.0%N/A0.095%Search for SEC Filing on Google Icon
8/18/2026Empowered Funds LLC21,948$4.74M0.0%N/A0.015%Search for SEC Filing on Google Icon
8/18/2026United Capital Financial Advisors LLC7,017$1.52M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/18/2026Jefferies Financial Group Inc.27,463$5.93M0.0%N/A0.019%Search for SEC Filing on Google Icon
8/18/2026Public Employees Retirement System of Ohio45,608$9.85M0.0%N/A0.031%Search for SEC Filing on Google Icon
8/17/2026Proficio Capital Partners LLC2,701$0.58M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/17/2026Pure Financial Advisors LLC1,438$0.31M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/17/2026Corient Private Wealth LP163,315$10.56M0.0%N/A0.111%Search for SEC Filing on Google Icon
8/17/2026Parallax Volatility Advisers L.P.2,291$0.50M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/17/2026Artia Global Partners LP18,437$3.98M0.7%N/A0.012%Search for SEC Filing on Google Icon
8/17/2026Bank of America Corp DE1,116,228$241.17M0.0%N/A0.755%Search for SEC Filing on Google Icon
8/15/2026Freestone Grove Partners LP83,853$18.12M0.1%N/A0.057%Search for SEC Filing on Google Icon
8/15/2026Caisse de depot et placement du Quebec510,194$110.23M0.2%N/A0.345%Search for SEC Filing on Google Icon
8/15/2026Man Group plc196,222$42.40M0.1%N/A0.133%Search for SEC Filing on Google Icon
8/15/2026Roberts Glore & Co. Inc. IL3,001$0.65M0.2%N/A0.002%Search for SEC Filing on Google Icon
8/15/2026Jupiter Topco LLC19,831$4.28M0.0%N/A0.013%Search for SEC Filing on Google Icon
8/14/2026ADAR1 Capital Management LLC17,900$3.87M0.2%N/A0.012%Search for SEC Filing on Google Icon
8/14/2026EFG International AG4,582$0.99M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/14/2026Primecap Management Co. CA15,154,606$3.27B1.9%N/A10.257%Search for SEC Filing on Google Icon
8/14/2026Canada Pension Plan Investment Board13,602$2.94M0.0%N/A0.009%Search for SEC Filing on Google Icon
8/14/2026Legal & General Group Plc1,493,289$322.64M0.1%N/A1.011%Search for SEC Filing on Google Icon
8/14/2026The Manufacturers Life Insurance Company90,784$19.62M0.0%N/A0.061%Search for SEC Filing on Google Icon
8/14/2026Aberdeen Wealth Management LLC265$57K0.0%N/A0.000%Search for SEC Filing on Google Icon
8/14/2026Trail Ridge Investment Advisors LLC1,807$0.39M0.2%N/A0.001%Search for SEC Filing on Google Icon
8/13/2026Cibc World Market Inc.7,424$1.60M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/13/2026OMERS ADMINISTRATION Corp23,421$5.06M0.0%N/A0.016%Search for SEC Filing on Google Icon
8/13/2026Osmosis Investment Management UK Ltd3,629$0.78M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/13/2026Sanctuary Advisors LLC5,838$1.26M0.0%N/A0.004%Search for SEC Filing on Google Icon
8/13/2026Polymer Capital Management HK LTD38,665$8.35M0.4%N/A0.026%Search for SEC Filing on Google Icon
8/13/2026Connor Clark & Lunn Investment Management Ltd.3,948$0.85M0.0%N/A0.003%Search for SEC Filing on Google Icon
8/13/2026Bank of Nova Scotia16,446$3.55M0.0%N/A0.011%Search for SEC Filing on Google Icon
8/12/2026Elevation Point Wealth Partners LLC3,519$0.76M0.0%N/A0.002%Search for SEC Filing on Google Icon
8/12/2026Daiichi Life Insurance Co. Ltd.5,397$1.17M0.0%N/A0.004%Search for SEC Filing on Google Icon
8/12/2026Commerce Bank11,672$2.52M0.0%N/A0.008%Search for SEC Filing on Google Icon
8/12/2026Northwestern Mutual Wealth Management Co.7,299$1.58M0.0%N/A0.005%Search for SEC Filing on Google Icon
8/12/2026Evolve Private Wealth LLC2,032$0.44M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/12/2026Westpac Banking Corp1,843$0.40M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/12/2026TRB Wealth Management LLC1,097$0.24M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/12/2026Sumitomo Life Insurance Co.1,648$0.36M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/12/2026Korea Investment CORP33,574$7.25M0.0%N/A0.023%Search for SEC Filing on Google Icon
8/12/2026EP Wealth Advisors LLC2,024$0.44M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/12/2026Ieq Capital LLC132,142$28.55M0.1%N/A0.089%Search for SEC Filing on Google Icon
8/12/2026Callan Family Office LLC6,183$1.34M0.0%N/A0.004%Search for SEC Filing on Google Icon
8/12/2026Keebeck Wealth Management1,395$0.30M0.0%N/A0.001%Search for SEC Filing on Google Icon
8/11/2026Keating Financial Advisory Services Inc.268$58K0.0%N/A0.000%Search for SEC Filing on Google Icon
Data available starting January 2016

See Full Table
Biogen logo
Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases in the United States, Europe, Germany, Asia, and internationally. The company provides TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; ADUHELM to treat Alzheimer's disease; FUMADERM to treat plaque psoriasis; BENEPALI, an etanercept biosimilar referencing ENBREL; IMRALDI, an adalimumab biosimilar referencing HUMIRA; FLIXABI, an infliximab biosimilar referencing REMICADE; and BYOOVIZ, a ranibizumab biosimilar referencing LUCENTIS. It offers RITUXAN for treating non-Hodgkin's lymphoma, chronic lymphocytic leukemia (CLL), rheumatoid arthritis, two forms of ANCA-associated vasculitis, and pemphigus vulgaris; RITUXAN HYCELA for non-Hodgkin's lymphoma and CLL; GAZYVA to treat CLL and follicular lymphoma; OCREVUS for relapsing MS and primary progressive MS; LUNSUMIO to treat relapsed or refractory follicular lymphoma; glofitamab for non-Hodgkin's lymphoma; and other anti-CD20 therapies. In addition, the company is developing various products for the treatment of MS, Alzheimer's disease and dementia, neuromuscular disorders, Parkinson's disease and movement disorders, neuropsychiatry, genetic neurodevelopmental disorders, and biosimilars, which are under various stages of development. It has collaboration and license agreements with Acorda Therapeutics, Inc.; Alkermes Pharma Ireland Limited; Denali Therapeutics Inc.; Eisai Co., Ltd.; Genentech, Inc.; Neurimmune SubOne AG; Ionis Pharmaceuticals, Inc.; Samsung Bioepis Co., Ltd.; Sangamo Therapeutics, Inc.; and Sage Therapeutics, Inc., as well as collaboration with Fujirebio to potentially identify and develop blood-based biomarkers for tau pathology in the brain. The company was founded in 1978 and is headquartered in Cambridge, Massachusetts.
Read More on Biogen

Today's Range

Now: $219.06
Low: $215.33
High: $218.80

50 Day Range

MA: $210.27
Low: $191.95
High: $224.51

52 Week Range

Now: $219.06
Low: $135.39
High: $225.80

Volume

422,214 shs

Average Volume

1,192,111 shs

Market Capitalization

$32.37 billion

P/E Ratio

38.65

Dividend Yield

N/A

Beta

0.17

Who are the company insiders with the largest holdings of Biogen?

Biogen's top insider shareholders include:
  1. George A Scangos (CEO)
  2. George Scangos (CEO)
  3. Susan H Alexander (EVP)
  4. Robert W Pangia (Director)
  5. Alfred Sandrock (SVP)
  6. Paul J Clancy (VP)
  7. Eric K Rowinsky (Director)
  8. Caroline Dorsa (Director)
  9. Nicole Murphy (Insider)
  10. William Young (Director)
Learn More about top insider investors at Biogen.

Who are the major institutional investors of Biogen?

Biogen's top institutional investors include:
  1. BlackRock Inc. — 10.82%
  2. Primecap Management Co. CA — 10.26%
  3. Wellington Management Group LLP — 2.11%
  4. Amundi — 1.03%
  5. Legal & General Group Plc — 1.01%
  6. UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC — 0.85%
Learn More about top institutional investors of Biogen stock.

Which major investors are selling Biogen stock?

Within the last quarter, BIIB stock was sold by these institutional investors:
  1. Van ECK Associates Corp
  2. UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
  3. B. Metzler seel. Sohn & Co. AG
  4. HighTower Advisors LLC
  5. Assenagon Asset Management S.A.
  6. Sigma Planning Corp
  7. Premier Path Wealth Partners LLC
  8. California State Teachers Retirement System

Which major investors are buying Biogen stock?

Within the previous quarter, BIIB stock was acquired by institutional investors including:
  1. BlackRock Inc.
  2. Primecap Management Co. CA
  3. Legal & General Group Plc
  4. Bank of America Corp DE
  5. Deutsche Bank AG
  6. Bank of New York Mellon Corp
  7. Amundi
  8. Caisse de depot et placement du Quebec

Biogen Active Insiders

Michel Vounatsos
Michel Vounatsos (Age 63)
CEO
Brian S Posner
Brian S Posner (Age 63)
Director
Eric K Rowinsky
Eric K Rowinsky
Director
Stephen A Sherwin
Stephen A Sherwin
Director
Susan H Alexander
Susan H Alexander (Age 69)
EVP
Alfred Sandrock
Alfred Sandrock (Age 68)
insider
Priya Singhal
Priya Singhal
Insider
Rachid Izzar
Rachid Izzar
Insider
Nicole Murphy
Nicole Murphy
Head of Pharmaceutical Operations and Technology