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Merck & Co., Inc.

MRK
Exchange
NYSE
Industry
Pharmaceutical Preparations
SEC CIK
0000310158

In the last 90 days, Merck & Co., Inc. insiders filed 0 open-market purchases and 7 sales; 3,854 institutions reported holding it in 13F filings for Q2 2026, worth $254.3B in total; 4 superinvestors hold it, including Harris Associates (Oakmark) and Fairfax Financial.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Merck & Co., Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
7 filings
5 insiders, $30.0M in total
Insiders trading
5
Net value
−$30.0M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Merck & Co., Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Merck & Co., Inc.
NameTitleLast reported holdingLast filingFilings, past year
Guindo ChirfiEVP, Access, Policy & Comms36,613Aug 13, 20268
Zachary JenniferEVP, General Counsel45,509Aug 13, 20265
DeLuca Richard R.EVP&Pres, Merck Animal Heallth110,167Aug 12, 20266
Maraldo David R.EVP & Pres. MMD18,212Aug 7, 20263
Williams David MichaelEVP,Chief Info&Digital Officer31,716Aug 7, 20266
Seidman Christine EDirector–Jul 1, 20265
Karsanbhai Surendralal LancaDirector–Jul 1, 20262
Coe Mary EllenDirector–Jul 1, 20265
Russo Patricia FDirector–Jun 2, 20261
Lavizzo-Mourey Risa JDirector–Jun 2, 20261
Glocer Thomas HDirector–Jun 2, 20264
Baker Douglas M JrDirector16,000Jun 2, 20261
Craig Pamela J.Director–Jun 2, 20261
Thulin Inge GDirector2,933Jun 2, 20261
Warden Kathy JDirector–Jun 2, 20261
Rothman PaulDirector–Jun 2, 20261
Mayo StephenDirector–Jun 2, 20261
Davis Robert MChairman, CEO & President450,351May 7, 20264
Larson Betty DEVP, Chief HR Officer13,774May 7, 20262
Li Dean YExecutive VP & President, MRL94,431May 7, 20265
Litchfield CarolineEVP & CFO92,301May 7, 20264
Oosthuizen Johannes JacobusEVP, Oncology & Int?l21,895May 7, 20264
Smart DaltonSVP Fin. - Global Controller9,388May 7, 20265
Foard BrianEVP, Specialty, Pharma, & ID–May 7, 20261
Chattopadhyay SanatExe V-P & Pres. MMD15,347May 1, 20262
Romanelli JosephPresident, Human Health Int?l28,739Jan 28, 20261
Downing Cristal NChief Comm. & Public Afrs Ofcr0Nov 12, 20251
Klobuchar Michael AEVP - Chief Strategy Officer23,621May 6, 20240
Wendell Peter CDirector–Mar 29, 20240
Mizell StevenEVP, Chief HR Officer23,619Feb 2, 20240
Karachun Rita ASr. VP Fince-Global Controller45,710May 5, 20230
LeCointe-Cephas LisaSVP Chief Ethics & Com Officer5,142May 5, 20230
Frazier Kenneth CExecutive Chair700,653Nov 8, 20220
Garay ArpaSVP Human Health Global Mktg.2,109May 5, 20220
Gerberding Julie L.EVP, Chief Patient Officer48,712Feb 28, 20220
Clyburn FrankEVP & Pres ? Human Health97,095Nov 4, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Nov 2, 2021 (view filing)Oct 294 daysDeLuca Richard R.EVP&Pres, Merck Animal HeallthSSale−135.4K$87.56−$11.9M−53.7%116.9K after
Nov 2, 2021 (view filing)Oct 294 daysChattopadhyay SanatExe V-P & Pres. MMDSSale−24.6K$87.32−$2.15M−20.9%93.1K after
Nov 2, 2021 (view filing)Nov 11 dayClyburn FrankEVP & Pres ? Human HealthSSale−39.8K$87.87−$3.49M−29.1%97.1K after
Nov 3, 2021 (view filing)Nov 12 daysGerberding Julie L.EVP, Chief Patient OfficerSSale−96.3K$87.91−$8.46M−71.1%39.2K after
Nov 4, 2021 (view filing)Nov 31 dayKarachun Rita ASr. VP Fince-Global ControllerSSale−25.0K$88.45−$2.21M−41.1%35.8K after
Nov 5, 2021 (view filing)Nov 41 dayLitchfield CarolineEVP & CFOSSale−18.3K$91.00−$1.67M−43.2%24.1K after
Nov 5, 2021 (view filing)Nov 41 dayDeLuca Richard R.EVP&Pres, Merck Animal HeallthSSale−29.8K$90.40−$2.69M−20.3%116.9K after
Nov 10, 2021 (view filing)Nov 91 dayFrazier Kenneth CExecutive ChairSSale−663.9K$82.27−$54.6M−53.1%586.8K after2 lots
Nov 1, 2022 (view filing)Oct 284 daysZachary JenniferEVP, General CounselSSale−165.3K$99.38−$16.4M−81.3%38.0K after2 lots
Nov 1, 2022 (view filing)Oct 284 daysOosthuizen Johannes JacobusPresident, U.S. MarketSSale−3.63K$100.21−$364.1K−25.0%10.9K after
Nov 1, 2022 (view filing)Oct 284 daysMizell StevenEVP, Chief HR OfficerSSale−25.0K$99.63−$2.49M−43.7%32.1K after2 lots
Nov 1, 2022 (view filing)Oct 284 daysKarachun Rita ASr. VP Fince-Global ControllerSSale−32.0K$100.34−$3.21M−43.8%41.1K after
Nov 1, 2022 (view filing)Oct 28-314 daysFrazier Kenneth CExecutive ChairSSale−867.1K$100.44−$87.1M−55.1%706.3K after5 lots
Nov 1, 2022 (view filing)Oct 284 daysDeLuca Richard R.EVP&Pres, Merck Animal HeallthSSale−164.6K$100.26−$16.5M−54.6%137.0K after
Nov 1, 2022 (view filing)Oct 284 daysChattopadhyay SanatExe V-P & Pres. MMDSSale−100.3K$100.10−$10.0M−68.7%45.6K after
Nov 3, 2022 (view filing)Nov 1-22 daysFrazier Kenneth CExecutive ChairSSale−600.0K$99.86−$59.9M−46.1%700.7K after5 lots
Nov 7, 2022 (view filing)Nov 3-44 daysFrazier Kenneth CExecutive ChairSSale−470.0K$98.66−$46.4M−40.1%700.7K after4 lots
Nov 7, 2022 (view filing)Nov 7Same dayOosthuizen Johannes JacobusPresident, U.S. MarketSSale−45.6K$99.47−$4.53M−71.1%18.5K after
Nov 8, 2022 (view filing)Nov 71 dayFrazier Kenneth CExecutive ChairSSale−235.8K$99.55−$23.5M−25.2%700.7K after3 lots
Nov 10, 2022 (view filing)Nov 91 dayDavis Robert MCEO & PresidentSSale−167.6K$102.44−$17.2M−40.4%247.6K after3 lots
Nov 10, 2022 (view filing)Nov 91 dayOosthuizen Johannes JacobusPresident, U.S. MarketSSale−1.79K$103.21−$185.3K−9.7%16.7K after
Nov 10, 2022 (view filing)Nov 8-102 daysMizell StevenEVP, Chief HR OfficerSSale−35.0K$101.18−$3.54M−52.1%32.1K after2 lots
Jan 11, 2023 (view filing)Jan 92 daysChattopadhyay SanatExe V-P & Pres. MMDSSale−84.0K$112.29−$9.43M−74.0%29.5K after5 lots
Feb 6, 2023 (view filing)Feb 33 daysZachary JenniferEVP, General CounselSSale−75.4K$103.17−$7.78M−58.3%53.9K after
Feb 8, 2023 (view filing)Feb 62 daysMizell StevenEVP, Chief HR OfficerSSale−4.44K$104.25−$462.5K−10.0%39.9K after
Feb 10, 2023 (view filing)Feb 91 dayMizell StevenEVP, Chief HR OfficerSSale−5.00K$107.00−$535.0K−12.5%34.9K after
Feb 14, 2023 (view filing)Feb 131 dayMizell StevenEVP, Chief HR OfficerSSale−1.81K$109.10−$198.0K−5.2%33.1K after
Feb 16, 2023 (view filing)Feb 151 dayRomanelli JosephPresident, Human Health Int?lSSale−5.00K$108.22−$541.1K−19.8%20.3K after
Apr 14, 2023 (view filing)Apr 131 dayChattopadhyay SanatExe V-P & Pres. MMDSSale−134.1K$115.07−$15.4M−100.0%0 after2 lots
Apr 28, 2023 (view filing)Apr 28Same dayDavis Robert MChairman, CEO & PresidentSSale−143.3K$114.93−$16.5M−34.5%271.8K after
May 2, 2023 (view filing)Apr 28-May 14 daysDeLuca Richard R.EVP&Pres, Merck Animal HeallthSSale−141.6K$115.55−$16.4M−47.8%154.5K after2 lots
May 3, 2023 (view filing)May 21 dayWilliams David MichaelEVP,Chief Info&Digital OfficerSSale−7.51K$116.82−$877.2K−40.4%11.1K after
May 5, 2023 (view filing)May 41 dayKarachun Rita ASr. VP Fince-Global ControllerSSale−15.9K$117.53−$1.87M−25.8%45.7K after
May 5, 2023 (view filing)May 41 dayZachary JenniferEVP, General CounselSSale−19.1K$117.59−$2.25M−35.3%35.1K after
May 5, 2023 (view filing)May 32 daysMizell StevenEVP, Chief HR OfficerSSale−53.4K$119.01−$6.36M−62.8%31.7K after4 lots10b5-1
Jun 30, 2023 (view filing)Dec 2, 2022210 daysLateRomanelli JosephPresident, Human Health Int?lPPurchase+59$109.67+$6.47KNew position59 after
Jun 30, 2023 (view filing)Dec 5, 2022-Apr 26, 2023207 daysLateRomanelli JosephPresident, Human Health Int?lPPurchase+350$108.19+$37.9K+1.7%20.6K after7 lots
Jun 30, 2023 (view filing)Mar 2498 daysLateRomanelli JosephPresident, Human Health Int?lSSale−35$104.65−$3.66K−0.2%20.6K after
Aug 3, 2023 (view filing)Aug 21 dayRomanelli JosephPresident, Human Health Int?lSSale−30$107.37−$3.22K−0.1%20.6K after
Aug 3, 2023 (view filing)Aug 21 dayRomanelli JosephPresident, Human Health Int?lSSale−59$107.37−$6.33K−100.0%0 after
Aug 4, 2023 (view filing)Aug 31 dayMizell StevenEVP, Chief HR OfficerSSale−4.50K$105.49−$474.7K−14.2%27.2K after
Aug 15, 2023 (view filing)Aug 141 dayMizell StevenEVP, Chief HR OfficerSSale−4.25K$109.01−$463.3K−15.6%22.9K after
Nov 9, 2023 (view filing)Nov 81 dayDeLuca Richard R.EVP&Pres, Merck Animal HeallthSSale−43.8K$105.03−$4.60M−28.2%111.8K after
Nov 13, 2023 (view filing)Nov 94 daysOosthuizen Johannes JacobusPresident, U.S. MarketSSale−2.08K$102.38−$213.1K−10.3%18.2K after
Feb 2, 2024 (view filing)Feb 2Same dayZachary JenniferEVP, General CounselSSale−49.5K$126.97−$6.28M−63.0%29.1K after
Feb 2, 2024 (view filing)Feb 2Same dayMizell StevenEVP, Chief HR OfficerSSale−50.7K$126.65−$6.42M−68.2%23.6K after
Feb 5, 2024 (view filing)Feb 23 daysOosthuizen Johannes JacobusPresident, U.S. MarketSSale−19.0K$127.18−$2.41M−44.8%23.3K after
Feb 8, 2024 (view filing)Feb 71 dayWilliams David MichaelEVP,Chief Info&Digital OfficerSSale−1.45K$127.57−$185.1K−6.8%19.8K after
Feb 12, 2024 (view filing)Feb 93 daysLi Dean YExecutive VP & President, MRLSSale−14.7K$125.50−$1.85M−24.1%46.2K after
Feb 14, 2024 (view filing)Feb 131 dayRomanelli JosephPresident, Human Health Int?lSSale−1.00K$124.89−$124.9K−4.9%19.6K after