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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: $253.62
Price Change: ▲ Price Increase of +3.97 (1.59%)
As of 10/30/2026 04:00 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
10/31/2026Chicago Partners Investment Group LLC4,953$1.24M0.0%-1.7%0.003%Search for SEC Filing on Google Icon
10/31/2026MH & Associates Securities Management Corp ADV16,941$3.83M3.3%-4.1%0.011%Search for SEC Filing on Google Icon
10/31/20263Chopt Investment Partners LLC904$0.20M0.0%N/A0.001%Search for SEC Filing on Google Icon
10/30/2026Compass Financial Management LLC10,300$2.33M0.3%+1,029,900.0%0.007%Search for SEC Filing on Google Icon
10/30/2026Rakuten Investment Management Inc.26,512$6.02M0.0%+10.0%0.018%Search for SEC Filing on Google Icon
10/30/2026AIA Group Ltd916$0.21M0.0%-83.5%0.001%Search for SEC Filing on Google Icon
10/30/2026Provenance Wealth Advisors LLC128$29K0.0%N/A0.000%Search for SEC Filing on Google Icon
10/30/2026Lyell Wealth Management LP925$0.21M0.0%N/A0.001%Search for SEC Filing on Google Icon
10/30/2026Richwood Investment Advisors LLC2,064$0.47M0.3%-9.0%0.001%Search for SEC Filing on Google Icon
10/30/2026Oregon Public Employees Retirement Fund18,167$4.10M0.0%-0.3%0.012%Search for SEC Filing on Google Icon
10/30/2026Eads & Heald Wealth Management1,192$0.27M0.1%+10.3%0.001%Search for SEC Filing on Google Icon
10/30/2026GRIMES & Co WEALTH MANAGEMENT LLC32,219$7.28M0.2%-4.9%0.022%Search for SEC Filing on Google Icon
10/29/2026Greenleaf Trust6,448$1.46M0.0%-0.7%0.004%Search for SEC Filing on Google Icon
10/29/2026Nippon Life Global Investors Americas Inc.132,210$29.86M1.2%-3.7%0.089%Search for SEC Filing on Google Icon
10/29/2026Sumitomo Mitsui Trust Group Inc.336,692$76.05M0.0%-2.9%0.228%Search for SEC Filing on Google Icon
10/29/2026Mirae Asset Global Investments Co. Ltd.68,372$15.44M0.0%N/A0.046%Search for SEC Filing on Google Icon
10/29/2026Profund Advisors LLC11,876$2.68M0.1%+38.7%0.008%Search for SEC Filing on Google Icon
10/29/2026ProShare Advisors LLC35,671$8.06M0.0%+1.5%0.024%Search for SEC Filing on Google Icon
10/29/2026Vise Technologies Inc.7,601$1.72M0.0%+14.7%0.005%Search for SEC Filing on Google Icon
10/29/2026Grandfield & Dodd LLC912$0.21M0.0%N/A0.001%Search for SEC Filing on Google Icon
10/29/2026Cidel Asset Management Inc.1,714$0.39M0.0%-12.2%0.001%Search for SEC Filing on Google Icon
10/29/2026Moss Adams Wealth Advisors LLC1,386$0.31M0.0%N/A0.001%Search for SEC Filing on Google Icon
10/29/2026MGO One Seven LLC1,635$0.37M0.0%+21.4%0.001%Search for SEC Filing on Google Icon
10/29/2026Aprio Wealth Management LLC3,266$0.74M0.0%+8.5%0.002%Search for SEC Filing on Google Icon
10/29/2026Avestar Capital LLC3,301$0.75M0.1%-2.1%0.002%Search for SEC Filing on Google Icon
10/29/2026State of Wyoming335$76K0.0%-88.5%0.000%Search for SEC Filing on Google Icon
10/28/2026Financial Solutions Advisory Group Inc.1,175$0.27M0.0%-14.1%0.001%Search for SEC Filing on Google Icon
10/28/2026Choreo LLC2,866$0.65M0.0%+8.8%0.002%Search for SEC Filing on Google Icon
10/28/2026China Universal Asset Management Co. Ltd.26,959$6.12M0.3%+14.7%0.000%Search for SEC Filing on Google Icon
10/28/2026TOWER TRUST & INVESTMENT Co3,010$0.68M0.4%+6.8%0.000%Search for SEC Filing on Google Icon
10/28/2026D.A. Davidson & CO.1,496$0.34M0.0%+28.5%0.000%Search for SEC Filing on Google Icon
10/28/2026BOKF NA8,750$1.98M0.0%-1.9%0.000%Search for SEC Filing on Google Icon
10/28/2026Motley Fool Asset Management LLC2,649$0.60M0.0%-11.0%0.000%Search for SEC Filing on Google Icon
10/28/2026Pinnacle Wealth Planning Services Inc.913$0.21M0.0%-11.6%0.000%Search for SEC Filing on Google Icon
10/28/2026North Dakota State Investment Board4,514$1.02M0.0%+3.9%0.000%Search for SEC Filing on Google Icon
10/27/2026Generali Asset Management SPA SGR36,993$8.36M0.1%+4.6%0.025%Search for SEC Filing on Google Icon
10/27/2026Asset Management One Co. Ltd.66,441$15.01M0.0%+3.6%0.045%Search for SEC Filing on Google Icon
10/27/2026Balance Wealth Partners LLC174$39K0.0%N/A0.000%Search for SEC Filing on Google Icon
10/26/2026Oppenheimer & Co. Inc.7,477$1.69M0.0%+180.5%0.005%Search for SEC Filing on Google Icon
10/26/2026Park Avenue Securities LLC7,818$1.77M0.0%+7.9%0.005%Search for SEC Filing on Google Icon
10/26/2026Verdence Capital Advisors LLC1,600$0.36M0.0%+12.8%0.001%Search for SEC Filing on Google Icon
10/26/2026Leo Wealth LLC22,652$5.12M1.1%N/A0.015%Search for SEC Filing on Google Icon
10/24/2026Apollon Wealth Management LLC42,817$9.67M0.1%+1,837.4%0.029%Search for SEC Filing on Google Icon
10/24/2026Loring Wolcott & Coolidge Fiduciary Advisors LLP MA7,913$1.79M0.0%+27.8%0.005%Search for SEC Filing on Google Icon
10/24/2026Kingswood Wealth Advisors LLC9,045$2.04M0.1%+479.1%0.006%Search for SEC Filing on Google Icon
10/24/2026Sigma Planning Corp12,385$2.80M0.1%+100.0%0.008%Search for SEC Filing on Google Icon
10/24/2026Financial Management Professionals Inc.1,031$0.23M0.0%+5,627.8%0.001%Search for SEC Filing on Google Icon
10/24/2026Probity Advisors Inc.1,183$0.27M0.0%+3.6%0.001%Search for SEC Filing on Google Icon
10/24/2026Guardian Investment Management4,400$0.99M0.7%-20.0%0.003%Search for SEC Filing on Google Icon
10/23/2026Signaturefd LLC5,302$1.20M0.0%+4.1%0.004%Search for SEC Filing on Google Icon
10/23/2026Citizens Financial Group Inc. RI3,091$0.70M0.0%-5.8%0.002%Search for SEC Filing on Google Icon
10/23/2026Carolina Wealth Advisors LLC467$0.11M0.0%N/A0.000%Search for SEC Filing on Google Icon
10/23/2026Evergreen Capital Management LLC22,447$5.07M0.1%+647.5%0.015%Search for SEC Filing on Google Icon
10/23/2026Mascoma Wealth Management LLC1,209$0.27M0.0%+30.4%0.001%Search for SEC Filing on Google Icon
10/23/2026Canton Hathaway LLC139$31K0.0%N/A0.000%Search for SEC Filing on Google Icon
10/23/2026Manchester Capital Management LLC2,559$0.58M0.1%+182.8%0.002%Search for SEC Filing on Google Icon
10/23/2026Barrett & Company Inc.2,575$0.58M0.2%+8,483.3%0.002%Search for SEC Filing on Google Icon
10/23/2026Farmers & Merchants Investments Inc.3,960$0.87M0.0%+3.4%0.003%Search for SEC Filing on Google Icon
10/23/2026Capital Investment Advisors LLC29,603$6.69M0.1%+1,347.6%0.020%Search for SEC Filing on Google Icon
10/23/2026Wedbush Securities Inc.17,364$3.92M0.1%+1,391.8%0.012%Search for SEC Filing on Google Icon
10/23/2026Vision Financial Markets LLC150$34K0.0%-25.0%0.000%Search for SEC Filing on Google Icon
10/23/2026Sterling Capital Management LLC74,522$16.83M0.3%+1,449.3%0.050%Search for SEC Filing on Google Icon
10/23/2026XXI Wealth LLC3,810$0.86M0.3%+5.7%0.003%Search for SEC Filing on Google Icon
10/22/2026Yousif Capital Management LLC270,457$61.09M0.7%+1,813.5%0.183%Search for SEC Filing on Google Icon
10/22/2026Old North State Wealth Management LLC24,136$5.45M2.0%-2.4%0.016%Search for SEC Filing on Google Icon
10/22/2026Root Financial Partners LLC3,963$0.90M0.0%N/A0.003%Search for SEC Filing on Google Icon
10/22/2026Adams Diversified Equity Fund Inc.97,100$21.93M0.7%-3.2%0.066%Search for SEC Filing on Google Icon
10/22/2026E. Ohman J or Asset Management AB113,189$25.57M0.6%+2,248.8%0.077%Search for SEC Filing on Google Icon
10/22/2026SBI Securities Co. Ltd.49,780$11.24M0.3%+3,284.1%0.034%Search for SEC Filing on Google Icon
10/22/2026Pinnacle Bancorp Inc.1,288$0.29M0.1%+7,950.0%0.001%Search for SEC Filing on Google Icon
10/22/2026Massachusetts Wealth Management3,455$0.78M0.3%+7.0%0.002%Search for SEC Filing on Google Icon
10/21/2026Crossmark Global Holdings Inc.125,959$28.45M0.3%+1,162.1%0.085%Search for SEC Filing on Google Icon
10/21/2026Albion Financial Group UT176$40K0.0%+2,833.3%0.000%Search for SEC Filing on Google Icon
10/21/2026Carnegie Investment Counsel1,632$0.37M0.0%N/A0.001%Search for SEC Filing on Google Icon
10/21/2026Nisa Investment Advisors LLC35,248$7.96M0.0%-0.9%0.024%Search for SEC Filing on Google Icon
10/21/2026Integrated Advisors Network LLC1,403$0.32M0.0%+3.5%0.001%Search for SEC Filing on Google Icon
10/21/2026Robeco Institutional Asset Management B.V.656,465$148.28M0.2%-17.0%0.444%Search for SEC Filing on Google Icon
10/20/2026Bank Pictet & Cie Europe AG3,279$0.74M0.0%+5.7%0.002%Search for SEC Filing on Google Icon
10/20/2026Prime Capital Investment Advisors LLC21,271$4.81M0.0%+776.4%0.014%Search for SEC Filing on Google Icon
10/20/2026Investors Asset Management of Georgia Inc. GA ADV9,405$2.12M0.7%+811.3%0.006%Search for SEC Filing on Google Icon
10/20/2026Sumitomo Mitsui DS Asset Management Company Ltd345,619$78.07M0.5%+1,552.4%0.234%Search for SEC Filing on Google Icon
10/20/2026CWA Asset Management Group LLC42,412$9.58M0.3%+11.2%0.029%Search for SEC Filing on Google Icon
10/19/2026Capital Square LLC909$0.21M0.1%N/A0.001%Search for SEC Filing on Google Icon
10/19/2026Clark Wealth Partners363$82K0.0%+5,085.7%0.000%Search for SEC Filing on Google Icon
10/19/2026Generali Investments Management Co LLC7,221$1.63M0.3%-2.9%0.005%Search for SEC Filing on Google Icon
10/19/2026Grant Private Wealth Management Inc1,176$0.27M0.1%N/A0.001%Search for SEC Filing on Google Icon
10/17/2026SteelPeak Wealth LLC3,149$0.71M0.0%+4.6%0.002%Search for SEC Filing on Google Icon
10/17/2026IFP Advisors Inc15,924$3.60M0.1%+976.7%0.011%Search for SEC Filing on Google Icon
10/17/2026Frank Rimerman Advisors LLC26,859$6.07M0.3%+416.8%0.018%Search for SEC Filing on Google Icon
10/17/2026Align Financial LLC123$28K0.0%+339.3%0.000%Search for SEC Filing on Google Icon
10/17/2026Forum Financial Management LP1,936$0.44M0.0%+2.4%0.001%Search for SEC Filing on Google Icon
10/17/2026Kintegral Advisory LLC18,048$4.08M0.3%+0.6%0.012%Search for SEC Filing on Google Icon
10/16/2026TD Waterhouse Canada Inc.2,855$0.65M0.0%+313.8%0.002%Search for SEC Filing on Google Icon
10/16/2026Banque Pictet & Cie SA64,875$14.65M0.1%-0.3%0.044%Search for SEC Filing on Google Icon
10/16/2026James T. Borello RIA637$0.14M0.0%-16.0%0.000%Search for SEC Filing on Google Icon
10/16/2026Hanson & Doremus Investment Management816$0.18M0.0%+55.4%0.001%Search for SEC Filing on Google Icon
10/16/2026Pension & Wealth Management Advisors Inc.358$81K0.0%N/A0.000%Search for SEC Filing on Google Icon
10/16/2026BFI Infinity Ltd.19,095$4.31M2.1%N/A0.013%Search for SEC Filing on Google Icon
10/16/2026Goldstein Advisors LLC932$0.21M0.0%N/A0.001%Search for SEC Filing on Google Icon
10/16/2026NFSG Corp1,837$0.42M0.0%+512.3%0.001%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: $253.62
Low: $251.19
High: $258.73

50 Day Range

MA: $227.08
Low: $210.73
High: $253.84

52 Week Range

Now: $253.62
Low: $146.52
High: $258.78

Volume

1,303,236 shs

Average Volume

1,316,967 shs

Market Capitalization

$37.49 billion

P/E Ratio

108.38

Dividend Yield

N/A

Beta

0.09

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. Robeco Institutional Asset Management B.V. — 0.44%
  2. Sumitomo Mitsui DS Asset Management Company Ltd — 0.23%
  3. Sumitomo Mitsui Trust Group Inc. — 0.23%
  4. Yousif Capital Management LLC — 0.18%
  5. State of Alaska Department of Revenue — 0.17%
  6. Nippon Life Global Investors Americas Inc. — 0.09%
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. Robeco Institutional Asset Management B.V.
  2. Curated Wealth Partners LLC
  3. Sumitomo Mitsui Trust Group Inc.
  4. Nippon Life Global Investors Americas Inc.
  5. AIA Group Ltd
  6. Adams Diversified Equity Fund Inc.
  7. State of Wyoming
  8. GRIMES & Co WEALTH MANAGEMENT LLC

Which major investors are buying Biogen stock?

Within the previous quarter, BIIB stock was acquired by institutional investors including:
  1. Sumitomo Mitsui DS Asset Management Company Ltd
  2. Yousif Capital Management LLC
  3. State of Alaska Department of Revenue
  4. Crossmark Global Holdings Inc.
  5. E. Ohman J or Asset Management AB
  6. Assenagon Asset Management S.A.
  7. Sterling Capital Management LLC
  8. Mirae Asset Global Investments Co. Ltd.

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