Merck & Co., Inc. (MRK) Insider Trading & Ownership $83.35 -0.67 (-0.80%) Closing price 07/11/2025 03:59 PM EasternExtended Trading$83.24 -0.11 (-0.14%) As of 07/11/2025 07:59 PM 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 Merck & Co., Inc. (NYSE:MRK) Insider Buying and Selling ActivityCurrentInsider OwnershipPercentage0.13%Number OfInsiders Buying(Last 12 Months)1Amount OfInsider Buying(Last 12 Months)$250.01KNumber OfInsiders Selling(Last 12 Months)2Amount OfInsider Selling(Last 12 Months)$562.29K Get MRK Insider Trade Alerts Want to know when executives and insiders are buying or selling Merck & Co., Inc. stock? 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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 TransactionDetails5/15/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Sell$74.68$15,001 - $50,0005/5/2025Marjorie Taylor GreeneU.S. Congress Member (R-GA)Buy$82.85$1,001 - $15,0004/29/2025Gilbert Ray Cisneros, Jr.U.S. Congress Member (D-CA)Buy$84.70$1,001 - $15,0004/25/2025Dalton E Smart IIISVPSell4,262$82.76$352,723.12 4/23/2025Ro KhannaU.S. Congress Member (D-CA)Sell$78.73$15,001 - $50,0004/21/2025Bruce WestermanU.S. Congress Member (R-AR)Sell$77.91$1,001 - $15,0004/17/2025Jefferson ShreveU.S. Congress Member (R-IN)Sell$77.93$15,001 - $50,0004/15/2025Ro KhannaU.S. Congress Member (D-CA)Buy$78.28$15,001 - $50,0004/9/2025Marjorie Taylor GreeneU.S. Congress Member (R-GA)Buy$81.82$1,001 - $15,0004/8/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Buy$78.77$15,001 - $50,0003/31/2025Gilbert Ray Cisneros, Jr.U.S. Congress Member (D-CA)Sell$89.74$15,001 - $50,0003/20/2025Kelly MorrisonU.S. Congress Member (D-MN)Sell$94.72$1,001 - $15,0003/3/2025Bruce WestermanU.S. Congress Member (R-AR)Buy$93.19$1,001 - $15,0002/26/2025Gilbert Ray Cisneros, Jr.U.S. Congress Member (D-CA)Buy$89.39$15,001 - $50,0002/25/2025Robert Bresnahan, Jr.U.S. Congress Member (R-PA)Sell$91.50$15,001 - $50,0002/24/2025Jefferson ShreveU.S. Congress Member (R-IN)Buy$91.22$15,001 - $50,0002/6/2025Cristal N DowningInsiderSell2,361$88.76$209,562.36 2/6/2025Inge G ThulinDirectorBuy2,833$88.25$250,012.25 (Data available from 1/1/2013 forward) MRK Insider Trading Activity - Frequently Asked Questions Who is on Merck & Co., Inc.'s Insider Roster? The list of insiders at Merck & Co., Inc. includes Cristal N Downing, Dalton E Smart III, Inge G Thulin, Johannes Jacobus Oosthuizen, Joseph Romanelli, Kenneth C Frazier, Richard R Deluca, Rita A Karachun, Robert M Davis, Sanat Chattopadhyay, and Steven Mizell. Learn more on insiders at MRK. What percentage of Merck & Co., Inc. stock is owned by insiders? 0.13% of Merck & Co., Inc. stock is owned by insiders. Learn more on MRK's insider holdings. Which Merck & Co., Inc. insiders have been buying company stock? The following insider purchased MRK shares in the last 24 months: Inge G Thulin ($250,012.25). How much insider buying is happening at Merck & Co., Inc.? Insiders have purchased a total of 2,833 MRK shares in the last 24 months for a total of $250,012.25 bought. Which Merck & Co., Inc. insiders have been selling company stock? The following insiders have sold MRK shares in the last 24 months: Cristal N Downing ($209,562.36), Dalton E Smart III ($352,723.12), Johannes Jacobus Oosthuizen ($213,052.78), Joseph Romanelli ($124,890.00), Richard R Deluca ($4,602,729.69), and Steven Mizell ($7,358,392.60). How much insider selling is happening at Merck & Co., Inc.? Insiders have sold a total of 112,971 Merck & Co., Inc. shares in the last 24 months for a total of $12,861,350.55 sold. Which members of congress are trading Merck & Co., Inc.? Marjorie Taylor Greene (R-GA), Gilbert Ray Cisneros, Jr. (D-CA), Ro Khanna (D-CA), Robert Bresnahan, Jr. (R-PA), Bruce Westerman (R-AR), Jefferson Shreve (R-IN), Julie Johnson (D-TX), Jared Moskowitz (D-FL), and C. Scott Franklin (R-FL) have bought shares of Merck & Co., Inc. in the last year totaling $186,000. Robert Bresnahan, Jr. (R-PA), Ro Khanna (D-CA), Bruce Westerman (R-AR), Jefferson Shreve (R-IN), Gilbert Ray Cisneros, Jr. (D-CA), Kelly Morrison (D-MN), Josh Gottheimer (D-NJ), Byron Donalds (R-FL), Jared Moskowitz (D-FL), Jonathan L. Jackson (D-IL), and John James (R-MI) have sold shares totaling $275,500. Merck & Co., Inc. Key ExecutivesMr. Robert M. Davis J.D. (Age 57)Chairman, President & CEO Compensation: $5.57MMs. Caroline Litchfield (Age 55)Executive VP & CFO Compensation: $3.09MMr. Richard R. DeLuca Jr. (Age 61)Executive VP & President of Merck Animal Health Compensation: $2.4MMr. Sanat Chattopadhyay (Age 64)Executive VP & President of Merck Manufacturing Division Compensation: $2.49MDr. Dean Y. Li M.D. (Age 61)Ph.D., Executive VP & President of Merck Research Laboratories Compensation: $3.61MMr. Dalton E. Smart III (Age 57)Senior VP of Finance, Principal Accounting Officer & Global Controller 1 recent tradesMr. David Michael Williams (Age 55)Executive VP and Chief Information & Digital Officer Mr. Peter DannenbaumVice President of Investor RelationsMs. Jennifer L. Zachary (Age 46)Executive VP & General Counsel Compensation: $2.73MLisa LeCointe-Cephas (Age 42)Senior VP and Chief Ethics & Compliance Officer More Insider Trading Tools from MarketBeat Related Companies Amgen Insider Selling Corcept Therapeutics Insider Selling Gilead Sciences Insider Selling Moderna Insider Selling Vertex Pharmaceuticals Insider Selling AbbVie Insider Selling Bristol Myers Squibb Insider Selling Johnson & Johnson Insider Selling Eli Lilly and Company Insider Selling Pfizer Insider Selling 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 Do They Know Something? 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