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BIIB Insider Trading

Insider Ownership Percentage: 0.18%
Insider Buying (Last 12 Months): $0.00
Insider Selling (Last 12 Months): $1,817,441.95

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: $176.76
Price Change: ▼ Price Decrease of -2.33 (-1.30%)
As of 02/3/2026 05:00 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
2/2/2026Priya 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  
7/3/2023Priya SinghalInsiderSell81$282.87$22,912.472,924View SEC Filing Icon  
4/28/2023Ginger GregoryEVPSell2,681$300.00$804,300.008,483View SEC Filing Icon  
4/4/2023Priya SinghalInsiderSell91$277.11$25,217.012,843View SEC Filing Icon  
3/28/2023Priya SinghalInsiderSell568$270.06$153,394.082,842View 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
2/3/2026NewEdge Wealth LLC2,470$0.44M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/3/2026F m Investments LLC2,465$0.43M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/3/2026Chesapeake Capital Corp IL3,544$0.62M0.5%N/A0.002%Search for SEC Filing on Google Icon
2/3/2026Crossmark Global Holdings Inc.10,094$1.78M0.0%+175.9%0.007%Search for SEC Filing on Google Icon
2/3/2026Ethic Inc.48,591$8.55M0.1%+9.2%0.033%Search for SEC Filing on Google Icon
2/3/2026Ballentine Partners LLC6,305$1.11M0.0%+6.1%0.004%Search for SEC Filing on Google Icon
2/3/2026GRIMES & Co WEALTH MANAGEMENT LLC33,844$5.96M0.1%-4.1%0.023%Search for SEC Filing on Google Icon
2/3/2026Generali Asset Management SPA SGR27,181$4.78M0.1%-33.6%0.019%Search for SEC Filing on Google Icon
2/3/2026MGO One Seven LLC2,251$0.40M0.0%N/A0.002%Search for SEC Filing on Google Icon
2/3/2026Crestwood Advisors Group LLC2,194$0.39M0.0%+20.5%0.001%Search for SEC Filing on Google Icon
2/3/2026Sequoia Financial Advisors LLC10,564$1.86M0.0%+16.1%0.007%Search for SEC Filing on Google Icon
2/3/2026Gateway Investment Advisers LLC48,161$8.48M0.1%+13.8%0.033%Search for SEC Filing on Google Icon
2/3/2026Swedbank AB231,609$40.76M0.0%-0.4%0.158%Search for SEC Filing on Google Icon
2/3/2026Mitsubishi UFJ Asset Management Co. Ltd.319,909$56.89M0.0%+4.1%0.218%Search for SEC Filing on Google Icon
2/3/2026BOKF NA14,868$2.62M0.0%-26.7%0.010%Search for SEC Filing on Google Icon
2/3/2026Sumitomo Mitsui DS Asset Management Company Ltd20,422$3.59M0.0%+2.0%0.014%Search for SEC Filing on Google Icon
2/3/2026Privium Fund Management B.V.73,480$12.93M2.4%+41.5%0.050%Search for SEC Filing on Google Icon
2/3/2026SBI Securities Co. Ltd.1,775$0.31M0.0%-14.9%0.001%Search for SEC Filing on Google Icon
2/2/2026Allegheny Financial Group1,442$0.25M0.0%-40.4%0.001%Search for SEC Filing on Google Icon
2/2/2026Truist Financial Corp11,407$2.01M0.0%+27.4%0.008%Search for SEC Filing on Google Icon
2/2/2026Cairn Investment Group Inc.8,096$1.43M0.7%-1.3%0.006%Search for SEC Filing on Google Icon
2/2/2026PKO Investment Management Joint Stock Co2,000$0.35M0.0%-66.7%0.001%Search for SEC Filing on Google Icon
2/2/2026Artemis Investment Management LLP226,845$39.92M0.5%N/A0.155%Search for SEC Filing on Google Icon
2/2/2026Composition Wealth LLC1,268$0.22M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/2/2026Horizon Investments LLC17,382$3.06M0.0%-71.5%0.012%Search for SEC Filing on Google Icon
2/2/2026One Wealth Advisors LLC1,604$0.28M0.0%N/A0.001%Search for SEC Filing on Google Icon
2/2/2026Fifth Third Bancorp9,212$1.62M0.0%+2.2%0.006%Search for SEC Filing on Google Icon
2/2/2026Danske Bank A S48,415$8.52M0.0%+8.3%0.033%Search for SEC Filing on Google Icon
2/2/2026Oppenheimer Asset Management Inc.3,012$0.53M0.0%N/A0.002%Search for SEC Filing on Google Icon
1/30/2026Sigma Planning Corp5,246$0.92M0.0%N/A0.004%Search for SEC Filing on Google Icon
1/30/2026Citizens Financial Group Inc. RI1,797$0.32M0.0%-10.0%0.001%Search for SEC Filing on Google Icon
1/30/2026New York State Teachers Retirement System111,203$19.57M0.0%+0.9%0.076%Search for SEC Filing on Google Icon
1/30/2026Bogart Wealth LLC509$90K0.0%+62.6%0.000%Search for SEC Filing on Google Icon
1/30/2026Simplicity Wealth LLC1,952$0.34M0.0%+9.9%0.001%Search for SEC Filing on Google Icon
1/30/2026Keybank National Association OH8,418$1.48M0.0%+2.0%0.006%Search for SEC Filing on Google Icon
1/30/2026Wealthfront Advisers LLC15,551$2.74M0.0%+37.3%0.011%Search for SEC Filing on Google Icon
1/30/2026Mitsubishi UFJ Trust & Banking Corp65,318$11.50M0.0%-22.8%0.045%Search for SEC Filing on Google Icon
1/30/2026M&T Bank Corp16,761$2.95M0.0%+14.4%0.011%Search for SEC Filing on Google Icon
1/29/2026Comerica Bank19,475$3.43M0.0%-42.2%0.013%Search for SEC Filing on Google Icon
1/29/2026Nippon Life Global Investors Americas Inc.26,490$4.66M0.2%N/A0.018%Search for SEC Filing on Google Icon
1/29/2026Aprio Wealth Management LLC1,950$0.34M0.0%N/A0.001%Search for SEC Filing on Google Icon
1/29/2026Camelot Portfolios LLC1,900$0.33M0.2%-9.5%0.001%Search for SEC Filing on Google Icon
1/29/2026Pictet Asset Management Holding SA947,494$166.90M0.2%+22.9%0.646%Search for SEC Filing on Google Icon
1/29/2026Verdence Capital Advisors LLC1,413$0.25M0.0%-5.4%0.001%Search for SEC Filing on Google Icon
1/29/2026Sanctuary Advisors LLC5,172$0.91M0.0%+36.2%0.004%Search for SEC Filing on Google Icon
1/29/2026AEGON ASSET MANAGEMENT UK Plc260,162$45.79M0.5%+33.0%0.177%Search for SEC Filing on Google Icon
1/29/2026Vanguard Group Inc.17,447,092$3.07B0.0%+0.9%11.893%Search for SEC Filing on Google Icon
1/29/2026Impax Asset Management Group plc32,124$5.65M0.0%-2.8%0.022%Search for SEC Filing on Google Icon
1/29/2026Resonant Capital Advisors LLC1,684$0.30M0.0%+6.9%0.001%Search for SEC Filing on Google Icon
1/29/2026Concurrent Investment Advisors LLC4,376$0.77M0.0%+178.4%0.003%Search for SEC Filing on Google Icon
1/29/2026Generali Investments Management Co LLC10,974$1.93M0.4%+10.1%0.007%Search for SEC Filing on Google Icon
1/29/2026Calamos Advisors LLC35,527$6.25M0.0%-3.9%0.024%Search for SEC Filing on Google Icon
1/29/2026China Universal Asset Management Co. Ltd.23,905$4.21M0.3%-19.2%0.016%Search for SEC Filing on Google Icon
1/28/2026Citizens & Northern Corp6,912$1.22M0.3%-1.2%0.005%Search for SEC Filing on Google Icon
1/28/2026Arizona State Retirement System40,220$7.08M0.0%-7.4%0.027%Search for SEC Filing on Google Icon
1/28/2026WPG Advisers LLC145$26K0.0%+417.9%0.000%Search for SEC Filing on Google Icon
1/28/2026Chicago Partners Investment Group LLC2,816$0.48M0.0%+3.4%0.002%Search for SEC Filing on Google Icon
1/28/2026Turtle Creek Wealth Advisors LLC1,462$0.26M0.0%N/A0.001%Search for SEC Filing on Google Icon
1/28/2026B. Metzler seel. Sohn & Co. AG29,971$5.28M0.0%+140.1%0.020%Search for SEC Filing on Google Icon
1/28/2026Teacher Retirement System of Texas23,489$4.13M0.0%-37.8%0.016%Search for SEC Filing on Google Icon
1/28/2026HB Wealth Management LLC4,670$0.82M0.0%+14.2%0.003%Search for SEC Filing on Google Icon
1/28/2026Caprock Group LLC23,453$4.13M0.1%+318.0%0.016%Search for SEC Filing on Google Icon
1/28/2026Kingswood Wealth Advisors LLC1,431$0.25M0.0%N/A0.001%Search for SEC Filing on Google Icon
1/28/2026KLP Kapitalforvaltning AS191,677$33.73M0.1%+15.1%0.131%Search for SEC Filing on Google Icon
1/28/2026M&T Bank Corp28,565$5.03M0.0%+94.9%0.019%Search for SEC Filing on Google Icon
1/28/2026Universal Beteiligungs und Servicegesellschaft mbH123,736$21.83M0.0%-16.2%0.084%Search for SEC Filing on Google Icon
1/28/2026OVERSEA CHINESE BANKING Corp Ltd34,366$6.05M0.2%-25.6%0.023%Search for SEC Filing on Google Icon
1/28/2026City State Bank322$57K0.0%-53.5%0.000%Search for SEC Filing on Google Icon
1/27/2026Optas LLC1,706$0.30M0.0%+4.5%0.001%Search for SEC Filing on Google Icon
1/27/2026Jones Kertz & Associates Inc.4,491$0.79M0.4%N/A0.003%Search for SEC Filing on Google Icon
1/27/2026Evergreen Capital Management LLC2,588$0.46M0.0%+11.7%0.002%Search for SEC Filing on Google Icon
1/27/2026TD Waterhouse Canada Inc.628$0.11M0.0%-14.4%0.000%Search for SEC Filing on Google Icon
1/27/2026Zurcher Kantonalbank Zurich Cantonalbank 452,442$79.63M0.2%+29.9%0.308%Search for SEC Filing on Google Icon
1/27/2026Bayforest Capital Ltd887$0.16M0.1%+106.8%0.001%Search for SEC Filing on Google Icon
1/27/2026First Horizon Corp169$30K0.0%N/A0.000%Search for SEC Filing on Google Icon
1/27/2026Asset Management One Co. Ltd.67,453$11.93M0.0%-0.7%0.046%Search for SEC Filing on Google Icon
1/27/2026GF Fund Management CO. LTD.6,880$1.21M0.0%-81.1%0.005%Search for SEC Filing on Google Icon
1/26/2026Merit Financial Group LLC10,517$1.85M0.0%+25.7%0.007%Search for SEC Filing on Google Icon
1/26/2026Whittier Trust Co.766$0.14M0.0%-34.9%0.001%Search for SEC Filing on Google Icon
1/26/2026Mirae Asset Global Investments Co. Ltd.35,107$6.18M0.0%-47.6%0.024%Search for SEC Filing on Google Icon
1/26/2026PDS Planning Inc1,291$0.23M0.0%N/A0.001%Search for SEC Filing on Google Icon
1/26/2026Parcion Private Wealth LLC2,096$0.37M0.0%+29.5%0.001%Search for SEC Filing on Google Icon
1/26/2026CWM LLC48,890$8.60M0.0%+3.0%0.033%Search for SEC Filing on Google Icon
1/26/2026KBC Group NV53,398$9.40M0.0%+50.6%0.036%Search for SEC Filing on Google Icon
1/26/2026Massachusetts Wealth Management2,999$0.53M0.2%+4.3%0.002%Search for SEC Filing on Google Icon
1/23/2026Farther Finance Advisors LLC1,656$0.29M0.0%+57.9%0.001%Search for SEC Filing on Google Icon
1/23/2026Bridgewater Advisors Inc.1,212$0.20M0.0%N/A0.001%Search for SEC Filing on Google Icon
1/23/2026Sage Mountain Advisors LLC2,042$0.36M0.0%-14.6%0.001%Search for SEC Filing on Google Icon
1/23/2026BSW Wealth Partners1,909$0.34M0.0%-4.0%0.001%Search for SEC Filing on Google Icon
1/23/2026Patton Fund Management Inc.1,244$0.22M0.0%-32.6%0.001%Search for SEC Filing on Google Icon
1/23/2026Assetmark Inc.2,392$0.42M0.0%+15.5%0.002%Search for SEC Filing on Google Icon
1/23/2026State of Alaska Department of Revenue17,187$3.02M0.0%-5.5%0.012%Search for SEC Filing on Google Icon
1/23/2026Paragon Capital Management Inc.6,686$1.18M0.9%N/A0.005%Search for SEC Filing on Google Icon
1/23/2026Old North State Wealth Management LLC23,809$4.19M2.0%+6.9%0.016%Search for SEC Filing on Google Icon
1/23/2026Choreo LLC2,377$0.42M0.0%-2.7%0.002%Search for SEC Filing on Google Icon
1/23/2026Sumitomo Mitsui Trust Group Inc.370,627$65.23M0.0%-10.8%0.253%Search for SEC Filing on Google Icon
1/23/2026Robeco Institutional Asset Management B.V.610,908$107.51M0.2%-9.0%0.416%Search for SEC Filing on Google Icon
1/23/2026Howard Capital Management Inc.1,161$0.20M0.0%N/A0.001%Search for SEC Filing on Google Icon
1/23/2026Ritholtz Wealth Management28,375$4.99M0.1%+142.9%0.019%Search for SEC Filing on Google Icon
1/22/2026Massachusetts Financial Services Co. MA712,559$125.40M0.0%-2.3%0.486%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: $176.76
Low: $176.19
High: $182.67

50 Day Range

MA: $176.41
Low: $164.42
High: $187.62

52 Week Range

Now: $176.76
Low: $110.04
High: $190.20

Volume

1,577,676 shs

Average Volume

1,550,257 shs

Market Capitalization

$25.93 billion

P/E Ratio

16.11

Dividend Yield

N/A

Beta

0.16

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

Biogen's top insider shareholders include:
  1. Eric K Rowinsky (Director)
  2. Stephen A Sherwin (Director)
  3. Rachid Izzar (Insider)
  4. Priya Singhal (Insider)
Learn More about top insider investors at Biogen.

Who are the major institutional investors of Biogen?

Biogen's top institutional investors include:
  1. Vanguard Group Inc. — 11.89%
  2. Pictet Asset Management Holding SA — 0.65%
  3. Massachusetts Financial Services Co. MA — 0.49%
  4. Robeco Institutional Asset Management B.V. — 0.42%
  5. Zurcher Kantonalbank Zurich Cantonalbank — 0.31%
  6. Sumitomo Mitsui Trust Group Inc. — 0.25%
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. Nordea Investment Management AB
  2. Robeco Institutional Asset Management B.V.
  3. Sumitomo Mitsui Trust Group Inc.
  4. Horizon Investments LLC
  5. Mirae Asset Global Investments Co. Ltd.
  6. GF Fund Management CO. LTD.
  7. Universal Beteiligungs und Servicegesellschaft mbH
  8. Mitsubishi UFJ Trust & Banking Corp
During the previous year, company insiders that have sold Biogen company stock include:
  1. Eric K Rowinsky (Director)
  2. Stephen A Sherwin (Director)
  3. Rachid Izzar (Insider)
Learn More investors selling Biogen stock.

Which major investors are buying Biogen stock?

During the last quarter, BIIB stock was bought by institutional investors including:
  1. Artemis Investment Management LLP
  2. Pictet Asset Management Holding SA
  3. SG Americas Securities LLC
  4. Vanguard Group Inc.
  5. Zurcher Kantonalbank Zurich Cantonalbank
  6. AEGON ASSET MANAGEMENT UK Plc
  7. IMC Chicago LLC
  8. Dakota Wealth Management