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Merck & Company Inc (MRK)

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Insider transactions

A complete record of Form 4 filings tracking every share acquisition and disposal by executives, directors, and senior officers. Filterable by date range and transaction type, the table exposes the direct market actions of those with the deepest knowledge of a company's operations — providing a factual, data-driven signal of internal conviction that complements traditional fundamental and technical analysis.

Transaction date
Executive
Executive Title
Security Type
Acquisition / Disposal
Shares
Share price
Aug 13, 2026GUINDO, CHIRFIEVP, Access, Policy & CommsCommon StockDisposal10,000135
Aug 12, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal11,099131.613
Aug 12, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockDisposal80,315133.456
Aug 12, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockAcquisition13,43384.71
Aug 12, 2026ZACHARY, JENNIFEREVP, General CounselStock Option (Right to Buy)Disposal41,4940
Aug 12, 2026ZACHARY, JENNIFEREVP, General CounselStock Option (Right to Buy)Disposal13,4330
Aug 12, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockAcquisition41,494117.89
Aug 12, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal600132.037
Aug 11, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal5,427132.35
Aug 11, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal7,410131.331
Aug 10, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal20,784130.435
Aug 6, 2026GUINDO, CHIRFIEVP, Access, Policy & CommsCommon StockDisposal15,000131
Aug 6, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal300131.023
Aug 6, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal805131.022
Aug 6, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal4,945130.231
Aug 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerStock Option (Right to Buy)Disposal4,6000
Aug 5, 2026MARALDO, DAVID R.EVP & Pres. MMDCommon StockAcquisition6,31173.73
Aug 5, 2026MARALDO, DAVID R.EVP & Pres. MMDCommon StockAcquisition2,68684.71
Aug 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockDisposal34,705128.771
Aug 5, 2026MARALDO, DAVID R.EVP & Pres. MMDCommon StockDisposal2,686128.718
Aug 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockAcquisition34,70573.73
Aug 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockDisposal13,542128.771
Aug 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockAcquisition13,54275.36
Aug 5, 2026MARALDO, DAVID R.EVP & Pres. MMDStock Option (Right to Buy)Disposal6,3110
Aug 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockDisposal4,600128.771
Aug 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockAcquisition4,60077.62
Aug 5, 2026MARALDO, DAVID R.EVP & Pres. MMDCommon StockDisposal9,709128.718
Aug 5, 2026MARALDO, DAVID R.EVP & Pres. MMDCommon StockAcquisition9,70987.1
Aug 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerStock Option (Right to Buy)Disposal34,7050
Aug 5, 2026MARALDO, DAVID R.EVP & Pres. MMDStock Option (Right to Buy)Disposal2,6860
Aug 5, 2026MARALDO, DAVID R.EVP & Pres. MMDStock Option (Right to Buy)Disposal9,7090
Aug 5, 2026MARALDO, DAVID R.EVP & Pres. MMDCommon StockDisposal6,311128.718
Aug 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerStock Option (Right to Buy)Disposal13,5420
Jun 30, 2026SEIDMAN, CHRISTINE EDirectorPhantom StockAcquisition63.23128.5
Jun 30, 2026COE, MARY ELLENDirectorPhantom StockAcquisition233.463128.5
Jun 30, 2026KARSANBHAI, SURENDRALAL LANCADirectorPhantom StockAcquisition126.459128.5
May 29, 2026KARSANBHAI, SURENDRALAL LANCADirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026WARDEN, KATHY JDirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026ROTHMAN, PAULDirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026CRAIG, PAMELA J.DirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026RUSSO, PATRICIA FDirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026LAVIZZO-MOUREY, RISA JDirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026BAKER, DOUGLAS M JRDirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026COE, MARY ELLENDirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026THULIN, INGE GDirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026GLOCER, THOMAS HDirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026MAYO, STEPHENDirectorPhantom StockAcquisition1,853.1118.72
May 29, 2026SEIDMAN, CHRISTINE EDirectorPhantom StockAcquisition1,853.1118.72
May 5, 2026DAVIS, ROBERT MDirector, Chairman, CEO & PresidentStock Option (Right to Buy)Acquisition139,6970
May 5, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthStock Option (Right to Buy)Acquisition34,9240
May 5, 2026GUINDO, CHIRFIEVP, Access, Policy & CommsRestricted Stock UnitAcquisition6,6280
May 5, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerRestricted Stock UnitAcquisition2,2980
May 5, 2026MARALDO, DAVID R.EVP & Pres. MMDStock Option (Right to Buy)Acquisition21,7310
May 5, 2026LITCHFIELD, CAROLINEEVP & CFORestricted Stock UnitAcquisition15,9080
May 5, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerStock Option (Right to Buy)Acquisition5,0450
May 5, 2026LI, DEAN YExecutive VP & President, MRLRestricted Stock UnitAcquisition19,8850
May 5, 2026FOARD, BRIANEVP, Specialty, Pharma, & IDRestricted Stock UnitAcquisition35,3510
May 5, 2026LARSON, BETTY DEVP, Chief HR OfficerStock Option (Right to Buy)Acquisition23,2830
May 5, 2026MARALDO, DAVID R.EVP & Pres. MMDRestricted Stock UnitAcquisition7,4240
May 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerStock Option (Right to Buy)Acquisition13,5820
May 5, 2026LI, DEAN YExecutive VP & President, MRLStock Option (Right to Buy)Acquisition58,2070
May 5, 2026OOSTHUIZEN, JOHANNES JACOBUSEVP, Oncology & Int?lStock Option (Right to Buy)Acquisition31,0440
May 5, 2026GUINDO, CHIRFIEVP, Access, Policy & CommsStock Option (Right to Buy)Acquisition19,4020
May 5, 2026FOARD, BRIANEVP, Specialty, Pharma, & IDRestricted Stock UnitAcquisition10,6050
May 5, 2026LITCHFIELD, CAROLINEEVP & CFOStock Option (Right to Buy)Acquisition46,5660
May 5, 2026OOSTHUIZEN, JOHANNES JACOBUSEVP, Oncology & Int?lRestricted Stock UnitAcquisition10,6050
May 5, 2026DAVIS, ROBERT MDirector, Chairman, CEO & PresidentRestricted Stock UnitAcquisition47,7240
May 5, 2026LARSON, BETTY DEVP, Chief HR OfficerRestricted Stock UnitAcquisition7,9540
May 5, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerRestricted Stock UnitAcquisition4,6400
May 5, 2026ZACHARY, JENNIFEREVP, General CounselStock Option (Right to Buy)Acquisition35,3120
May 5, 2026ZACHARY, JENNIFEREVP, General CounselRestricted Stock UnitAcquisition12,0640
May 5, 2026FOARD, BRIANEVP, Specialty, Pharma, & IDStock Option (Right to Buy)Acquisition31,0440
May 5, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthRestricted Stock UnitAcquisition11,9310
May 2, 2026MARALDO, DAVID R.EVP & Pres. MMDRestricted Stock UnitDisposal5520
May 2, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockAcquisition383112.16
May 2, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerRestricted Stock UnitDisposal3830
May 2, 2026MARALDO, DAVID R.EVP & Pres. MMDCommon StockAcquisition552112.16
May 2, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockDisposal132112.16
May 2, 2026MARALDO, DAVID R.EVP & Pres. MMDCommon StockDisposal159112.16
Apr 30, 2026LARSON, BETTY DEVP, Chief HR OfficerCommon StockAcquisition11,350110.95
Apr 30, 2026LARSON, BETTY DEVP, Chief HR OfficerCommon StockDisposal5,143110.95
Apr 30, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockDisposal159110.95
Apr 30, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockAcquisition464110.95
Apr 30, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerRestricted Stock UnitDisposal4640
Apr 30, 2026LARSON, BETTY DEVP, Chief HR OfficerRestricted Stock UnitDisposal11,3500
Apr 29, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockDisposal324110.03
Apr 29, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockAcquisition944110.03
Apr 29, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockAcquisition1,377110.03
Apr 29, 2026OOSTHUIZEN, JOHANNES JACOBUSEVP, Oncology & Int?lCommon StockAcquisition1,377110.03
Apr 29, 2026DAVIS, ROBERT MDirector, Chairman, CEO & PresidentCommon StockAcquisition13,300110.03
Apr 29, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerRestricted Stock UnitDisposal1,3770
Apr 29, 2026GUINDO, CHIRFIEVP, Access, Policy & CommsCommon StockAcquisition1,967110.03
Apr 29, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal1,241110.03
Apr 29, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockDisposal679110.03
Apr 29, 2026CHATTOPADHYAY, SANATExe V-P & Pres. MMDCommon StockAcquisition2,597110.03
Apr 29, 2026LARSON, BETTY DEVP, Chief HR OfficerRestricted Stock UnitDisposal2,0850
Apr 29, 2026GUINDO, CHIRFIEVP, Access, Policy & CommsRestricted Stock UnitDisposal1,9670
Apr 29, 2026CHATTOPADHYAY, SANATExe V-P & Pres. MMDRestricted Stock UnitDisposal2,5970
Apr 29, 2026CHATTOPADHYAY, SANATExe V-P & Pres. MMDCommon StockDisposal1,130110.03
Apr 29, 2026LITCHFIELD, CAROLINEEVP & CFOCommon StockDisposal1,938110.03
Apr 29, 2026OOSTHUIZEN, JOHANNES JACOBUSEVP, Oncology & Int?lCommon StockDisposal679110.03
Apr 29, 2026LARSON, BETTY DEVP, Chief HR OfficerCommon StockAcquisition2,085110.03
Apr 29, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockAcquisition2,951110.03
Apr 29, 2026LITCHFIELD, CAROLINEEVP & CFORestricted Stock UnitDisposal3,9350
Apr 29, 2026LI, DEAN YExecutive VP & President, MRLCommon StockAcquisition4,722110.03
Apr 29, 2026GUINDO, CHIRFIEVP, Access, Policy & CommsCommon StockDisposal969110.03
Apr 29, 2026DAVIS, ROBERT MDirector, Chairman, CEO & PresidentCommon StockDisposal6,551110.03
Apr 29, 2026LI, DEAN YExecutive VP & President, MRLCommon StockDisposal2,326110.03
Apr 29, 2026LI, DEAN YExecutive VP & President, MRLRestricted Stock UnitDisposal4,7220
Apr 29, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerRestricted Stock UnitDisposal9440
Apr 29, 2026DAVIS, ROBERT MDirector, Chairman, CEO & PresidentRestricted Stock UnitDisposal13,3000
Apr 29, 2026OOSTHUIZEN, JOHANNES JACOBUSEVP, Oncology & Int?lRestricted Stock UnitDisposal1,3770
Apr 29, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockDisposal1,454110.03
Apr 29, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthRestricted Stock UnitDisposal2,5180
Apr 29, 2026LARSON, BETTY DEVP, Chief HR OfficerCommon StockDisposal715110.03
Apr 29, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockAcquisition2,518110.03
Apr 29, 2026ZACHARY, JENNIFEREVP, General CounselRestricted Stock UnitDisposal2,9510
Apr 29, 2026LITCHFIELD, CAROLINEEVP & CFOCommon StockAcquisition3,935110.03
Mar 31, 2026COE, MARY ELLENDirectorPhantom StockAcquisition249.397120.29
Mar 31, 2026SEIDMAN, CHRISTINE EDirectorPhantom StockAcquisition67.545120.29
Mar 31, 2026GLOCER, THOMAS HDirectorPhantom StockAcquisition405.271120.29
Feb 12, 2026GUINDO, CHIRFIChief Marketing OfficerCommon StockDisposal10,000121.456
Feb 10, 2026LI, DEAN YExecutive VP & President, MRLCommon StockDisposal10,235117.523
Feb 9, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockDisposal38,835119.152
Feb 9, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockAcquisition38,835119.152
Feb 9, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockAcquisition25,946119.152
Feb 9, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockDisposal25,946119.152
Feb 9, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockDisposal56,792119.152
Feb 9, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockAcquisition56,792119.152
Feb 9, 2026GUINDO, CHIRFIChief Marketing OfficerCommon StockDisposal10,000118.41
Feb 9, 2026ZACHARY, JENNIFEREVP, General CounselStock Option (Right to Buy)Disposal25,9460
Feb 9, 2026ZACHARY, JENNIFEREVP, General CounselStock Option (Right to Buy)Disposal38,8350
Feb 9, 2026ZACHARY, JENNIFEREVP, General CounselStock Option (Right to Buy)Disposal56,7920
Feb 6, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockDisposal5,000121.905
Feb 6, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockAcquisition5,00077.62
Feb 6, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerStock Option (Right to Buy)Disposal5,0000
Feb 6, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockDisposal37,685120.924
Feb 6, 2026OOSTHUIZEN, JOHANNES JACOBUSPresident, U.S. MarketCommon StockDisposal15,000121.866
Feb 5, 2026GUINDO, CHIRFIChief Marketing OfficerCommon StockDisposal20,000121.884
Feb 4, 2026DAVIS, ROBERT MDirector, Chairman, CEO & PresidentCommon StockDisposal32,462118.351
Feb 4, 2026LI, DEAN YExecutive VP & President, MRLCommon StockDisposal15,087118.766
Feb 4, 2026LITCHFIELD, CAROLINEEVP & CFOCommon StockDisposal41,997119.611
Feb 4, 2026LITCHFIELD, CAROLINEEVP & CFOCommon StockAcquisition41,99753.06
Feb 4, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerStock Option (Right to Buy)Disposal4,0000
Feb 4, 2026LITCHFIELD, CAROLINEEVP & CFOStock Option (Right to Buy)Disposal41,9970
Feb 4, 2026DAVIS, ROBERT MDirector, Chairman, CEO & PresidentCommon StockDisposal14,972117.38
Feb 4, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockAcquisition4,00062.07
Feb 4, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockDisposal2,400119.675
Feb 4, 2026LI, DEAN YExecutive VP & President, MRLCommon StockAcquisition15,08756.04
Feb 4, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockDisposal4,000119.675
Feb 4, 2026LI, DEAN YExecutive VP & President, MRLStock Option (Right to Buy)Disposal15,0870
Jan 26, 2026DELUCA, RICHARD R.EVP&Pres, Merck Animal HeallthCommon StockAcquisition12,264107.4
Jan 26, 2026OOSTHUIZEN, JOHANNES JACOBUSPresident, U.S. MarketCommon StockAcquisition5,026107.4
Jan 26, 2026CHATTOPADHYAY, SANATExe V-P & Pres. MMDCommon StockAcquisition13,880107.4
Jan 26, 2026LITCHFIELD, CAROLINEEVP & CFOCommon StockAcquisition15,852107.4
Jan 26, 2026DAVIS, ROBERT MDirector, Chairman, CEO & PresidentCommon StockAcquisition47,434107.4
Jan 26, 2026LI, DEAN YExecutive VP & President, MRLCommon StockAcquisition20,469107.4
Jan 26, 2026ROMANELLI, JOSEPHPresident, Human Health Int?lCommon StockAcquisition5,703107.4
Jan 26, 2026ZACHARY, JENNIFEREVP, General CounselCommon StockAcquisition11,583107.4
Jan 26, 2026GUINDO, CHIRFIChief Marketing OfficerCommon StockAcquisition9,865107.4
Jan 26, 2026SMART, DALTON E. IIISVP Fin. - Global ControllerCommon StockAcquisition1,066107.4
Jan 26, 2026WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockAcquisition6,112107.4
Dec 31, 2025SEIDMAN, CHRISTINE EDirectorPhantom StockAcquisition77.19105.26
Dec 31, 2025COE, MARY ELLENDirectorPhantom StockAcquisition285.009105.26
Dec 31, 2025GLOCER, THOMAS HDirectorPhantom StockAcquisition463.139105.26
Nov 10, 2025DOWNING, CRISTAL NChief Comm. & Public Afrs OfcrCommon StockDisposal7,08587
Nov 3, 2025WILLIAMS, DAVID MICHAELEVP,Chief Info&Digital OfficerCommon StockDisposal8,61483.59
Sep 30, 2025SEIDMAN, CHRISTINE EDirectorPhantom StockAcquisition96.80783.93
Sep 30, 2025COE, MARY ELLENDirectorPhantom StockAcquisition357.44183.93
Sep 30, 2025GLOCER, THOMAS HDirectorPhantom StockAcquisition580.84183.93