Biogen (BIIB) Insider Trading & Ownership $141.62 +1.99 (+1.43%) Closing price 09/3/2025 04:00 PM EasternExtended Trading$141.58 -0.03 (-0.02%) As of 07:29 AM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Insider Trades Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Biogen (NASDAQ:BIIB) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage0.18%Number OfInsiders Buying(Last 12 Months)0Number OfInsiders Selling(Last 12 Months)3Amount OfInsider Selling(Last 12 Months)$1.68M Get BIIB Insider Trade Alerts Want to know when executives and insiders are buying or selling Biogen stock? 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BIIB Insider Buying and Selling by Quarter Biogen Insider and Congressional Trades History Insiders and Members of Congress Insiders Only Members of Congress Only Transaction Type Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel Transaction DateNameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionDetails9/2/2025Priya SinghalInsiderSell517$133.55$69,045.35 7/8/2025Rachid IzzarInsiderSell2,223$135.00$300,105.00 5/19/2025Ro KhannaU.S. Congress Member (D-CA)Sell$129.44$1,001 - $15,0005/15/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Buy$123.70$1,001 - $15,0004/23/2025Ro KhannaU.S. Congress Member (D-CA)Buy$118.17$1,001 - $15,0004/8/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Sell$114.05$1,001 - $15,0003/7/2025Stephen A SherwinDirectorSell8,760$150.02$1,314,175.20 2/25/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Buy$143.46$1,001 - $15,0009/3/2024Priya SinghalInsiderSell431$204.22$88,018.82 (Data available from 1/1/2013 forward) BIIB Insider Trading Activity - Frequently Asked Questions Who is on Biogen's Insider Roster? The list of insiders at Biogen includes Eric K Rowinsky, Ginger Gregory, Priya Singhal, Rachid Izzar, Stephen A Sherwin, and Susan H Alexander. Learn more on insiders at BIIB. What percentage of Biogen stock is owned by insiders? 0.18% of Biogen stock is owned by insiders. Learn more on BIIB's insider holdings. Which Biogen insiders have been buying company stock? The following insider purchased BIIB shares in the last 24 months: Eric K Rowinsky ($101,255.70). How much insider buying is happening at Biogen? Insiders have purchased a total of 455 BIIB shares in the last 24 months for a total of $101,255.70 bought. Which Biogen insiders have been selling company stock? The following insiders have sold BIIB shares in the last 24 months: Priya Singhal ($502,498.60), Rachid Izzar ($300,105.00), and Stephen A Sherwin ($1,314,175.20). How much insider selling is happening at Biogen? Insiders have sold a total of 13,354 Biogen shares in the last 24 months for a total of $2,116,778.80 sold. Which members of congress are trading Biogen? Robert Bresnahan, Jr. (R-PA) and Ro Khanna (D-CA) have bought shares of Biogen in the last year totaling $24,000. Ro Khanna (D-CA) and Robert Bresnahan, Jr. (R-PA) have sold shares totaling $16,000. Biogen Key ExecutivesMr. Christopher A. Viehbacher (Age 63)President, CEO & Director Compensation: $4.07MMr. Michael R. McDonnell CPA (Age 60)Executive VP & CFO Compensation: $2.21MMs. Nicole Murphy (Age 51)Head of Pharmaceutical Operations & Technology Compensation: $1.45MMs. Susan H. Alexander Esq. (Age 67)Executive VP & Chief Legal Officer Compensation: $1.95MMr. Rachid Izzar (Age 49)Head of Global Product Strategy & Commercialization Compensation: $1.27M1 recent tradesMs. Robin C. Kramer (Age 58)Senior VP & Chief Accounting Officer Mr. Charles E. TrianoSenior VP & Head of Investor RelationsMs. Natacha GassenbachChief Communication Officer & Head of Corporate AffairsMr. Adam Keeney Ph.D. (Age 47)Executive VP & Head of Corporate Development Dr. Ginger Gregory Ph.D. (Age 56)Executive VP & Chief Human Resources Officer Compensation: $1.59M More Insider Trading Tools from MarketBeat Related Companies Amgen Insider Trading Gilead Sciences Insider Trading Ionis Pharmaceuticals Insider Trading Moderna Insider Trading Prothena Insider Trading Cassava Sciences Insider Trading Vertex Pharmaceuticals Insider Trading AbbVie Insider Trading Bristol Myers Squibb Insider Trading Eli Lilly and Company Insider Trading Insider Tracking Tools CEO Purchases/Sales CFO Purchases/Sales Top Insider Buying Stocks Top Insider Selling Stocks Insider Trades Screener Insider Trades Newsletter Congressional Stock Trades Insider Trading By Country U.S. Insider Trading Activity Canadian Insider Trading Activity U.K. Insider Trading Activity Australia Insider Trading Activity Latest Articles Loop Industries Insiders Buy Stock, Signal Confidence in OutlookDueling Insider Moves: Heavy Buying Here, Big Selling ThereCostco Faces Downgrades, Death Cross, Insider SellingReynolds Consumer Products Stock Price: Insiders Signal a BottomBuy, Sell, or Hold? 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