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BIIB Insider Trading

Insider Ownership Percentage: 0.25%
Insider Buying (Last 12 Months): $585.09
Insider Selling (Last 12 Months): $734,709.55

Biogen Insider Trading History Chart

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

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Biogen Share Price & Price History

Current Price: $200.99
Price Change: ▼ Price Decrease of -1.963 (-0.97%)
As of 08/3/2026 02:07 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  
9/5/2023Priya SinghalInsiderSell431$269.43$116,124.333,354View SEC Filing Icon  
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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.

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Biogen Institutional Trading History

Reporting DateHedge FundShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
7/10/2026Investors Research Corp1,641$0.36M0.1%-11.3%0.001%Search for SEC Filing on Google Icon
7/10/2026Insight Wealth Strategies LLC34,320$7.20M0.7%+16.9%0.023%Search for SEC Filing on Google Icon
7/10/2026Tema ETFs LLC2,772$0.60M0.0%+5.5%0.002%Search for SEC Filing on Google Icon
7/10/2026Generali Investments Management Co LLC7,437$1.61M0.3%+4.6%0.005%Search for SEC Filing on Google Icon
7/10/2026Handelsbanken Fonder AB93,236$20.15M0.1%+12.7%0.063%Search for SEC Filing on Google Icon
7/10/2026Charles Schwab Trust Co3,101$0.67M0.0%N/A0.002%Search for SEC Filing on Google Icon
7/10/2026Wealthcare Advisory Partners LLC4,728$1.02M0.0%-12.3%0.003%Search for SEC Filing on Google Icon
7/9/2026Contravisory Investment Management Inc.44,329$9.58M1.7%-0.8%0.030%Search for SEC Filing on Google Icon
7/9/2026Valeo Financial Advisors LLC1,301$0.28M0.0%N/A0.001%Search for SEC Filing on Google Icon
7/8/2026Beacon Investment Advisory Services Inc.12,229$2.64M0.1%-0.7%0.008%Search for SEC Filing on Google Icon
7/8/2026Trust Point Inc.1,078$0.23M0.0%N/A0.001%Search for SEC Filing on Google Icon
7/8/2026Czech National Bank42,023$9.08M0.0%+5.1%0.028%Search for SEC Filing on Google Icon
7/8/2026PensionDanmark Pensionsforsikringsaktieselskab10,506$2.27M0.0%-4.4%0.007%Search for SEC Filing on Google Icon
7/8/2026Assenagon Asset Management S.A.5,766$1.25M0.0%-17.3%0.004%Search for SEC Filing on Google Icon
7/8/2026Israel Discount Bank of New York1,055$0.23M0.4%N/A0.001%Search for SEC Filing on Google Icon
7/7/2026GAMMA Investing LLC6,462$1.40M0.1%+7.8%0.004%Search for SEC Filing on Google Icon
7/7/2026CoreCap Advisors LLC858$0.19M0.0%+237.8%0.001%Search for SEC Filing on Google Icon
7/6/2026RDA Financial Network3,000$0.65M0.1%-4.0%0.002%Search for SEC Filing on Google Icon
7/6/2026Boltwood Capital Management1,489$0.32M0.1%+16.9%0.001%Search for SEC Filing on Google Icon
7/2/2026Versant Capital Management Inc1,539$0.33M0.0%+15.6%0.001%Search for SEC Filing on Google Icon
7/2/2026First County Bank CT 3,933$0.85M0.4%-5.6%0.003%Search for SEC Filing on Google Icon
6/22/2026Sapient Capital LLC1,143$0.21M0.0%N/A0.001%Search for SEC Filing on Google Icon
6/18/2026Western Wealth Management LLC1,183$0.22M0.0%-5.7%0.001%Search for SEC Filing on Google Icon
6/18/2026Pacer Advisors Inc.660,408$121.07M0.2%-48.6%0.447%Search for SEC Filing on Google Icon
6/12/2026Defilade Capital Management L.P.96,289$17.65M2.5%-40.6%0.065%Search for SEC Filing on Google Icon
6/3/2026CoreFirst Bank & Trust295$54K0.0%-50.0%0.000%Search for SEC Filing on Google Icon
6/3/2026Parallel Advisors LLC4,367$0.80M0.0%+1.5%0.003%Search for SEC Filing on Google Icon
6/3/2026NewEdge Advisors LLC13,031$2.39M0.0%-38.1%0.009%Search for SEC Filing on Google Icon
6/1/2026Caerus Investment Advisors LLC2,801$0.51M0.2%+5.0%0.002%Search for SEC Filing on Google Icon
6/1/2026Financial Solutions Advisory Group Inc.1,372$0.25M0.0%N/A0.001%Search for SEC Filing on Google Icon
5/26/2026Glenmede Trust Co. NA11,652$2.14M0.0%+17.5%0.008%Search for SEC Filing on Google Icon
5/22/2026Summitry LLC4,737$0.87M0.0%-1.2%0.003%Search for SEC Filing on Google Icon
5/22/2026Groupama Asset Managment8,753$1.61M0.0%+3.8%0.006%Search for SEC Filing on Google Icon
5/22/2026Segall Bryant & Hamill LLC5,379$1.03M0.0%N/A0.004%Search for SEC Filing on Google Icon
5/19/2026Western Wealth Management LLC1,183$0.22M0.0%-5.7%0.001%Search for SEC Filing on Google Icon
5/19/2026Bank of America Corp DE1,156,369$212M0.0%+2.4%0.783%Search for SEC Filing on Google Icon
5/19/2026Kentucky Retirement Systems19,502$3.58M0.1%+112.6%0.013%Search for SEC Filing on Google Icon
5/19/2026Janus Henderson Group PLC18,975$3.48M0.0%-6.3%0.013%Search for SEC Filing on Google Icon
5/19/2026Bull Harbor Capital LLC5,077$0.93M0.2%N/A0.003%Search for SEC Filing on Google Icon
5/19/2026Arkadios Wealth Advisors4,781$0.88M0.0%+4.5%0.003%Search for SEC Filing on Google Icon
5/19/2026Encore Global Management LP500$92K0.1%N/A0.000%Search for SEC Filing on Google Icon
5/18/2026ADAR1 Capital Management LLC11,000$2.02M0.1%-54.7%0.007%Search for SEC Filing on Google Icon
5/18/2026Amundi790,827$144.98M0.0%+38.2%0.536%Search for SEC Filing on Google Icon
5/18/2026EverSource Wealth Advisors LLC3,178$0.58M0.0%+32.5%0.002%Search for SEC Filing on Google Icon
5/18/2026California State Teachers Retirement System220,687$40.46M0.0%-2.5%0.149%Search for SEC Filing on Google Icon
5/18/2026Royal Bank of Canada531,377$97.42M0.0%-1.9%0.360%Search for SEC Filing on Google Icon
5/18/2026Richwood Investment Advisors LLC2,032$0.37M0.3%-4.2%0.001%Search for SEC Filing on Google Icon
5/18/2026Empowered Funds LLC21,775$3.99M0.0%-62.4%0.015%Search for SEC Filing on Google Icon
5/16/2026The Manufacturers Life Insurance Company95,108$17.44M0.0%-10.1%0.064%Search for SEC Filing on Google Icon
5/16/2026Quantinno Capital Management LP116,374$21.34M0.0%+18.3%0.079%Search for SEC Filing on Google Icon
5/16/2026SummitTX Capital L.P.21,656$3.97M0.1%N/A0.015%Search for SEC Filing on Google Icon
5/16/2026Lazard Asset Management LLC16,935$3.11M0.0%-63.3%0.011%Search for SEC Filing on Google Icon
5/16/2026Orbimed Advisors LLC61,600$11.29M0.2%N/A0.042%Search for SEC Filing on Google Icon
5/15/2026OMERS ADMINISTRATION Corp20,149$3.69M0.0%+19.9%0.014%Search for SEC Filing on Google Icon
5/15/2026Lombard Odier Asset Management Switzerland SA3,899$0.72M0.0%N/A0.003%Search for SEC Filing on Google Icon
5/15/2026Waverly Advisors LLC3,151$0.58M0.0%+12.8%0.002%Search for SEC Filing on Google Icon
5/14/2026Healthcare of Ontario Pension Plan Trust Fund9,220$1.69M0.0%-78.4%0.006%Search for SEC Filing on Google Icon
5/14/2026Dai ichi Life Insurance Company Ltd5,808$1.07M0.0%-3.5%0.004%Search for SEC Filing on Google Icon
5/14/2026Renaissance Technologies LLC203,396$37.29M0.1%-49.0%0.138%Search for SEC Filing on Google Icon
5/14/2026Gabelli Funds LLC14,100$2.59M0.0%-8.4%0.010%Search for SEC Filing on Google Icon
5/14/2026Morningstar Investment Management LLC19,344$3.55M0.2%+3.0%0.013%Search for SEC Filing on Google Icon
5/14/2026Public Employees Retirement System of Ohio46,062$8.45M0.0%-2.8%0.031%Search for SEC Filing on Google Icon
5/14/2026Compound Planning Inc.2,742$0.50M0.0%-16.4%0.002%Search for SEC Filing on Google Icon
5/14/2026Inceptionr LLC2,248$0.41M0.1%-53.9%0.002%Search for SEC Filing on Google Icon
5/14/2026Knott David M Jr4,000$0.73M0.4%-33.3%0.003%Search for SEC Filing on Google Icon
5/14/2026Bank of Nova Scotia20,436$3.75M0.0%-10.0%0.014%Search for SEC Filing on Google Icon
5/14/2026Systematic Financial Management LP16,220$2.97M0.1%-2.5%0.011%Search for SEC Filing on Google Icon
5/14/2026Sei Investments Co.71,513$13.11M0.0%+20.2%0.048%Search for SEC Filing on Google Icon
5/14/2026Lido Advisors LLC4,432$0.81M0.0%-26.0%0.003%Search for SEC Filing on Google Icon
5/13/2026Cetera Investment Advisers22,444$4.12M0.0%-4.5%0.015%Search for SEC Filing on Google Icon
5/13/2026CI Investments Inc.4,078$0.75M0.0%-7.3%0.003%Search for SEC Filing on Google Icon
5/13/2026First Trust Advisors LP673,958$123.56M0.1%+19.1%0.456%Search for SEC Filing on Google Icon
5/12/2026Westpac Banking Corp1,843$0.34M0.0%-15.4%0.001%Search for SEC Filing on Google Icon
5/12/2026ABN Amro Investment Solutions5,976$1.10M0.0%+23.8%0.004%Search for SEC Filing on Google Icon
5/8/2026PNC Financial Services Group Inc.39,484$7.24M0.0%+2.0%0.027%Search for SEC Filing on Google Icon
5/8/2026Oslo Pensjonsforsikring AS1,840$0.34M0.1%N/A0.001%Search for SEC Filing on Google Icon
5/8/2026Andra AP fonden52,000$9.53M0.1%+1,980.0%0.035%Search for SEC Filing on Google Icon
5/8/2026Wilkerson Advisory Group LLC593$0.11M0.0%+129.0%0.000%Search for SEC Filing on Google Icon
5/8/2026Cassaday & Co Wealth Management LLC218$40K0.0%N/A0.000%Search for SEC Filing on Google Icon
5/8/2026Convergence Investment Partners LLC13,557$2.49M0.4%+11.5%0.009%Search for SEC Filing on Google Icon
5/7/2026Meeder Asset Management Inc.1,071$0.20M0.0%+395.8%0.001%Search for SEC Filing on Google Icon
5/7/2026Meeder Advisory Services Inc.4,721$0.87M0.0%+1.2%0.003%Search for SEC Filing on Google Icon
5/7/2026Dimensional Fund Advisors LP1,079,119$197.88M0.0%+12.3%0.731%Search for SEC Filing on Google Icon
5/7/2026Parallel Advisors LLC4,367$0.80M0.0%+1.5%0.003%Search for SEC Filing on Google Icon
5/7/2026AlphaCentric Advisors LLC3,835$0.70M0.7%+5.7%0.003%Search for SEC Filing on Google Icon
5/7/2026KBC Group NV234,692$43.03M0.1%+339.5%0.159%Search for SEC Filing on Google Icon
5/7/2026SEB Asset Management AB41,869$7.68M0.0%N/A0.028%Search for SEC Filing on Google Icon
5/7/2026Swiss National Bank430,600$78.94M0.0%+7.2%0.292%Search for SEC Filing on Google Icon
5/7/2026AIA Group Ltd9,329$1.71M0.0%+310.1%0.006%Search for SEC Filing on Google Icon
5/7/2026Mediolanum International Funds Ltd6,054$1.14M0.0%N/A0.004%Search for SEC Filing on Google Icon
5/6/2026California Public Employees Retirement System340,903$62.50M0.0%+3.1%0.231%Search for SEC Filing on Google Icon
5/6/2026Kera Capital Partners Inc.1,723$0.32M0.0%+3.5%0.001%Search for SEC Filing on Google Icon
5/6/2026Assetmark Inc.2,690$0.49M0.0%+12.5%0.002%Search for SEC Filing on Google Icon
5/6/2026Bessemer Group Inc.3,127$0.57M0.0%+15.3%0.002%Search for SEC Filing on Google Icon
5/6/2026SteelPeak Wealth LLC2,704$0.50M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/6/2026Independent Financial Group LLC3,328$0.61M0.0%N/A0.002%Search for SEC Filing on Google Icon
5/5/2026Wealthfront Advisers LLC15,679$2.87M0.0%+0.8%0.011%Search for SEC Filing on Google Icon
5/5/2026D.A. Davidson & CO.1,218$0.22M0.0%N/A0.001%Search for SEC Filing on Google Icon
5/5/2026Twin Capital Management Inc.4,430$0.81M0.1%N/A0.003%Search for SEC Filing on Google Icon
5/5/2026Bank of New York Mellon Corp788,523$144.56M0.0%-2.8%0.534%Search for SEC Filing on Google Icon
Data available starting January 2016

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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: $200.99
Low: $199.58
High: $203.85

50 Day Range

MA: $201.23
Low: $188.83
High: $216.63

52 Week Range

Now: $200.99
Low: $127.00
High: $219.72

Volume

380,076 shs

Average Volume

1,286,434 shs

Market Capitalization

$29.70 billion

P/E Ratio

35.50

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. Handelsbanken Fonder AB — 0.06%
  2. Contravisory Investment Management Inc. — 0.03%
  3. Czech National Bank — 0.03%
  4. Insight Wealth Strategies LLC — 0.02%
  5. Beacon Investment Advisory Services Inc. — 0.01%
  6. PensionDanmark Pensionsforsikringsaktieselskab — 0.01%
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. Assenagon Asset Management S.A.
  2. Wealthcare Advisory Partners LLC
  3. PensionDanmark Pensionsforsikringsaktieselskab
  4. Contravisory Investment Management Inc.
  5. First County Bank CT
  6. Investors Research Corp
  7. RDA Financial Network
  8. Beacon Investment Advisory Services Inc.

Which major investors are buying Biogen stock?

Within the previous quarter, BIIB stock was acquired by institutional investors including:
  1. Handelsbanken Fonder AB
  2. Insight Wealth Strategies LLC
  3. Charles Schwab Trust Co
  4. Czech National Bank
  5. Valeo Financial Advisors LLC
  6. Trust Point Inc.
  7. Israel Discount Bank of New York
  8. CoreCap Advisors LLC

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
1 recent trades
Rachid Izzar
Rachid Izzar
Insider
Nicole Murphy
Nicole Murphy
Head of Pharmaceutical Operations and Technology
1 recent trades