Regeneron Pharmaceuticals (REGN) Insider Trading & Ownership $579.61 -7.35 (-1.25%) Closing price 08/28/2025 04:00 PM EasternExtended Trading$578.25 -1.36 (-0.23%) As of 07:21 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 ForecastsChartCompetitorsDividendEarningsFDA EventsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Regeneron Pharmaceuticals (NASDAQ:REGN) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage7.02%Number OfInsiders Buying(Last 3 Years)0Number OfInsiders Selling(Last 3 Years)18Amount OfInsider Selling(Last 3 Years)$189.80M Get REGN Insider Trade Alerts Want to know when executives and insiders are buying or selling Regeneron Pharmaceuticals stock? 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REGN Insider Buying and Selling by Quarter Regeneron Pharmaceuticals 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/SellAverage Share PriceTotal Transaction7/25/2025Ro KhannaU.S. Congress Member (D-CA)Sell$563.10$1,001 - $15,0007/1/2025Ro KhannaU.S. Congress Member (D-CA)Sell$534.91$1,001 - $15,0005/28/2025Ro KhannaU.S. Congress Member (D-CA)Sell$591.85$1,001 - $15,0005/19/2025Ro KhannaU.S. Congress Member (D-CA)Buy$596.54$1,001 - $15,0005/15/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Buy$584.99$1,001 - $15,0004/15/2025Ro KhannaU.S. Congress Member (D-CA)Sell$557.91$1,001 - $15,0004/10/2025Byron DonaldsU.S. Congress Member (R-FL)Sell$546.39$1,001 - $15,0004/9/2025Ro KhannaU.S. Congress Member (D-CA)Buy$576.72$1,001 - $15,0004/8/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Sell$556.81$1,001 - $15,0004/7/2025Jefferson ShreveU.S. Congress Member (R-IN)Sell$572.78$15,001 - $50,0004/1/2025Julie JohnsonU.S. Congress Member (D-TX)Sell$617.00$1,001 - $15,0002/25/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Sell$723.47$1,001 - $15,0002/12/2025Julie JohnsonU.S. Congress Member (D-TX)Sell$663.86$1,001 - $15,0001/24/2025Josh GottheimerU.S. Congress Member (D-NJ)Sell$675.79$1,001 - $15,0001/15/2025Julie JohnsonU.S. Congress Member (D-TX)Buy$703.43$1,001 - $15,00011/29/2024Josh GottheimerU.S. Congress Member (D-NJ)Sell$750.22$1,001 - $15,00011/19/2024Josh GottheimerU.S. Congress Member (D-NJ)Sell$744.60$1,001 - $15,00011/13/2024Jonathan L. JacksonU.S. Congress Member (D-IL)Sell$804.33$15,001 - $50,00011/1/2024Jonathan L. JacksonU.S. Congress Member (D-IL)Sell$843.60$1,001 - $15,00010/23/2024Josh GottheimerU.S. Congress Member (D-NJ)Sell$941.39$1,001 - $15,00010/15/2024Greg LandsmanU.S. Congress Member (D-OH)Sell$1,016.53$1,001 - $15,000 (Data available from 1/1/2013 forward) REGN Insider Trading Activity - Frequently Asked Questions Who is on Regeneron Pharmaceuticals' Insider Roster? The list of insiders at Regeneron Pharmaceuticals includes Andrew J Murphy, Arthur F Ryan, Bonnie L Bassler, Christine A Poon, Christopher R Fenimore, George Yancopoulos, Huda Y Zoghbi, Jason Pitofsky, Joseph J Larosa, Joseph L Goldstein, Leonard S Schleifer, Marc Tessier-Lavigne, Marion Mccourt, Michael S Brown, N Anthony Coles, Neil Stahl, Plew Daniel P Van, and Robert E Landry. Learn more on insiders at REGN. What percentage of Regeneron Pharmaceuticals stock is owned by insiders? 7.02% of Regeneron Pharmaceuticals stock is owned by insiders. Learn more on REGN's insider holdings. Which Regeneron Pharmaceuticals insiders have been selling company stock? The following insiders have sold REGN shares in the last 24 months: Andrew J Murphy ($5,531,266.01), Arthur F Ryan ($464,071.00), Bonnie L Bassler ($3,268,341.50), Christopher R Fenimore ($10,361,437.28), George Yancopoulos ($15,163,200.00), Huda Y Zoghbi ($850,000.00), Jason Pitofsky ($521,090.00), Joseph J Larosa ($3,949,630.70), Joseph L Goldstein ($2,571,650.00), Leonard S Schleifer ($56,839,749.16), Marion Mccourt ($4,113,975.07), and Michael S Brown ($4,578,937.92). How much insider selling is happening at Regeneron Pharmaceuticals? Insiders have sold a total of 111,233 Regeneron Pharmaceuticals shares in the last 24 months for a total of $108,213,348.64 sold. Which members of congress are trading Regeneron Pharmaceuticals? Ro Khanna (D-CA), Robert Bresnahan, Jr. (R-PA), and Julie Johnson (D-TX) have bought shares of Regeneron Pharmaceuticals in the last year totaling $32,000. Ro Khanna (D-CA), Byron Donalds (R-FL), Robert Bresnahan, Jr. (R-PA), Jefferson Shreve (R-IN), Julie Johnson (D-TX), Josh Gottheimer (D-NJ), Jonathan L. Jackson (D-IL), and Greg Landsman (D-OH) have sold shares totaling $185,000. Regeneron Pharmaceuticals Key ExecutivesDr. Leonard S. Schleifer M.D. (Age 71)Ph.D., Co-Founder, President, CEO & Co-Chairman Compensation: $8.18MDr. George D. Yancopoulos M.D. (Age 64)Ph.D., Co-Founder, President, Chief Scientific Officer & Co-Chairman Compensation: $7.76MDr. Andrew J. Murphy Ph.D. (Age 65)Executive Vice President of Research Compensation: $1.68MMr. Daniel P. Van Plew (Age 51)Executive VP and GM of Industrial Operations & Product Supply Compensation: $2.01MMr. Christopher R. Fenimore CPA (Age 53)Senior VP of Finance & CFO Ms. Patrice GiloolySenior Vice President of Quality Assurance & OperationsMr. Bob McCowanSenior VP of IT & Chief Information OfficerMr. Ryan CroweSenior Vice President of Investor Relations & Strategic AnalysisMr. Joseph J. LaRosa (Age 65)Executive VP, General Counsel & Secretary Compensation: $1.75MMs. Melissa LoznerSenior VP & Chief Compliance Officer More Insider Trading Tools from MarketBeat Related Companies AMGN Insider Transactions GILD Insider Transactions MRNA Insider Transactions NTLA Insider Transactions VIR Insider Transactions VRTX Insider Transactions ABBV Insider Transactions LLY Insider Transactions MRK Insider Transactions PFE Insider Transactions 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 Costco Faces Downgrades, Death Cross, Insider SellingReynolds Consumer Products Stock Price: Insiders Signal a BottomBuy, Sell, or Hold? Insiders Pile Into These 3 Healthcare StocksInsiders Trade Millions in NVIDIA-Linked Navitas, Hims, & Shift45 Stocks Insiders Are Selling That Analysts Say Buy This page (NASDAQ:REGN) was last updated on 8/29/2025 by MarketBeat.com Staff From Our PartnersINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredBONUS GUIDE - Ben Stein Prepares For the Next Financial CrisisWith inflation high, debt soaring, and global tensions rising, a financial storm may be brewing. Economist ...Goldco Precious Metals | SponsoredThis is my Christian duty“This land I will give to you…” — a 4,000-year-old line from Genesis may hold the key to unlocking a $150 tril...Paradigm Press | SponsoredAlex’s “Next Magnificent Seven” stocksThe original “Magnificent Seven” turned $7K into $1.18 million. 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