Form 4 Tracker
Merck & Co., Inc.
MRK

73 insider filings · Latest: Aug 13, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Feb 10, 2026Feb 10 9:38 PMDEAN LI
Proposed Sale
10,235$117.52$1.2M

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Feb 10, 2026Feb 10 9:04 PMDean Y LiExecutive VP & President, MRL
Sale
10,235$117.52$1.2M92,035.05(D)

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Feb 9, 2026Feb 9 9:57 PMJENNIFER ZACHARY
Proposed Sale
121,573$119.15$14.5M

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Feb 9, 2026Feb 9 9:55 PMCHIRFI GUINDO
Proposed Sale
20,000$118.41$2.4M

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Feb 9, 2026Feb 9 9:04 PMChirfi GuindoChief Marketing Officer
Sale
10,000$118.41$1.2M70,615.127(D)

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Feb 9, 2026Feb 9 9:01 PMJennifer ZacharyEVP, General Counsel
Sale
121,573$119.15$14.5M68,915.671(D)

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Feb 6, 2026Feb 6 9:35 PMRICHARD ROBERT DELUCA JR.
Proposed Sale
37,685$120.92$4.6M

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Feb 6, 2026Feb 6 9:33 PMDAVID WILLIAMS
Proposed Sale
5,000$121.91$609.5K

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Feb 6, 2026Feb 6 9:20 PMDavid Michael WilliamsEVP,Chief Info&Digital Officer
Sale
5,000$121.91$609.5K30,837.743(D)

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Feb 6, 2026Feb 6 9:19 PMJOHANNES JACOBUS OOSTHUIZEN
Proposed Sale
15,000$121.87$1.8M

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Feb 4, 2026Feb 6 9:18 PMDalton E. Smart IIISVP Fin. - Global Controller
Sale
6,400$119.68$765.9K8,204.816(D)

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Feb 6, 2026Feb 6 9:15 PMJohannes Jacobus OosthuizenPresident, U.S. Market
Sale
15,000$121.87$1.8M21,197.389(D)

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Feb 4, 2026Feb 6 9:13 PMCaroline LitchfieldEVP & CFO
Sale
41,997$119.61$5.0M90,192.194(D)

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Feb 4, 2026Feb 6 9:12 PMDean Y LiExecutive VP & President, MRL
Sale
15,087$118.77$1.8M102,270.05(D)

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Feb 5, 2026Feb 6 9:10 PMChirfi GuindoChief Marketing Officer
Sale
20,000$121.88$2.4M80,615.127(D)

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Feb 6, 2026Feb 6 9:08 PMRichard R. DelucaEVP&Pres, Merck Animal Heallth
Sale
37,685$120.92$4.6M160,173.834(D)

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Feb 4, 2026Feb 6 9:05 PMRobert M DavisDirector, Chairman, CEO & President
Sale
47,434$118.04$5.6M443,601.757(D)

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Feb 5, 2026Feb 5 9:25 PMCHIRFI GUINDO
Proposed Sale
20,000$121.88$2.4M

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Feb 4, 2026Feb 4 9:38 PMDALTON SMART
Proposed Sale
6,400$119.68$765.9K

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Feb 4, 2026Feb 4 9:29 PMROBERT M. DAVIS
Proposed Sale
47,434$118.02$5.6M

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Aug 12, 2026Aug 13 8:11 PMJennifer ZacharyEVP, General Counsel
Option Exercise
54,927$117.890(D)

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Aug 5, 2026Aug 7 8:21 PMDavid R. MaraldoEVP & Pres. MMD
Option Exercise
18,706$87.105,374(D)

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Aug 5, 2026Aug 7 8:19 PMDavid Michael WilliamsEVP,Chief Info&Digital Officer
Option Exercise
52,847$77.620(D)

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Jun 30, 2026Jul 1 12:47 PMChristine E SeidmanDirector
Grant/Award
63.2321,291.269(D)

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Jun 30, 2026Jul 1 12:44 PMSurendralal Lanca KarsanbhaiDirector
Grant/Award
126.4595,518.802(D)

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Jun 30, 2026Jul 1 12:41 PMMary Ellen CoeDirector
Grant/Award
233.46331,999.102(D)

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May 29, 2026Jun 2 8:14 PMKathy J WardenDirector
Grant/Award
1,853.117,890.292(D)

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May 29, 2026Jun 2 7:31 PMSurendralal Lanca KarsanbhaiDirector
Grant/Award
1,853.15,392.343(D)

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May 29, 2026Jun 2 6:26 PMMary Ellen CoeDirector
Grant/Award
1,853.131,765.639(D)

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May 29, 2026Jun 2 6:21 PMInge G ThulinDirector
Grant/Award
1,853.127,469.711(D)

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May 29, 2026Jun 2 6:19 PMChristine E SeidmanDirector
Grant/Award
1,853.121,228.039(D)

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May 29, 2026Jun 2 6:17 PMPatricia F RussoDirector
Grant/Award
1,853.162,390.752(D)

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May 29, 2026Jun 2 6:14 PMPaul RothmanDirector
Grant/Award
1,853.134,944.942(D)

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May 29, 2026Jun 2 6:11 PMStephen MayoDirector
Grant/Award
1,853.114,824.52(D)

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May 29, 2026Jun 2 6:09 PMRisa J Lavizzo-MoureyDirector
Grant/Award
1,853.117,749.352(D)

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May 29, 2026Jun 2 6:05 PMThomas H GlocerDirector
Grant/Award
1,853.1110,911.759(D)

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May 29, 2026Jun 2 6:03 PMPamela J. CraigDirector
Grant/Award
1,853.134,944.93(D)

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May 29, 2026Jun 2 5:57 PMDouglas M Baker JRDirector
Grant/Award
1,853.111,518.208(D)

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May 5, 2026May 7 4:18 PMJennifer ZacharyEVP, General Counsel
Grant/Award
47,376$113.1535,312(D)

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May 5, 2026May 7 4:14 PMDavid Michael WilliamsEVP,Chief Info&Digital Officer
Grant/Award
18,222$113.1513,582(D)

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