Form 4 Tracker
Merck & Co., Inc.
MRK

76 insider filings · Latest: Sep 30, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Feb 4, 2026Feb 4 9:27 PMDEAN LI
Proposed Sale
15,087$118.77$1.8M—

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Feb 4, 2026Feb 4 9:26 PMCAROLINE A LITCHFIELD
Proposed Sale
41,997$119.61$5.0M—

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Nov 10, 2025Nov 10 9:07 PMCRISTAL DOWNING
Proposed Sale
7,085$87.00$616.4K—

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Nov 3, 2025Nov 3 9:09 PMDAVID WILLIAMS
Proposed Sale
8,614$83.59$720.0K—

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Apr 25, 2025Apr 25 8:05 PMDALTON SMART
Proposed Sale
4,262$82.76$352.7K—

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Feb 19, 2025Feb 19 10:09 PMJOHANNES JACOBUS OOSTHUIZEN
Proposed Sale
8,500$84.09$714.7K—

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Feb 13, 2025Feb 13 9:10 PMDAVID WILLIAMS
Proposed Sale
6,000$85.34$512.1K—

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Feb 6, 2025Feb 6 9:43 PMCRISTAL DOWNING
Proposed Sale
2,361$88.76$209.6K—

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Apr 29, 2026May 1 9:55 PMDalton E. Smart IIISVP Fin. - Global Controller
Option Exercise
944—1,889(D)

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Apr 29, 2026May 1 9:45 PMDean Y LiExecutive VP & President, MRL
Option Exercise
4,722—9,444(D)

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Apr 29, 2026May 1 9:43 PMJennifer ZacharyEVP, General Counsel
Option Exercise
2,951—5,903(D)

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Apr 30, 2026May 1 9:42 PMBetty D LarsonEVP, Chief HR Officer
Option Exercise
11,350—11,350(D)

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Apr 29, 2026May 1 9:42 PMBetty D LarsonEVP, Chief HR Officer
Option Exercise
2,085—4,172(D)

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Apr 29, 2026May 1 9:39 PMCaroline LitchfieldEVP & CFO
Option Exercise
3,935—7,870(D)

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Apr 29, 2026May 1 9:38 PMRobert M DavisDirector, Chairman, CEO & President
Option Exercise
13,300—26,601(D)

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Apr 29, 2026May 1 9:34 PMJohannes Jacobus OosthuizenEVP, Oncology & Int?l
Option Exercise
1,377—2,755(D)

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Mar 31, 2026Apr 1 5:47 PMChristine E SeidmanDirector
Grant/Award
67.545—19,238.328(D)

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Mar 31, 2026Apr 1 5:44 PMThomas H GlocerDirector
Grant/Award
405.271—108,293.493(D)

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Mar 31, 2026Apr 1 5:42 PMMary Ellen CoeDirector
Grant/Award
249.397—29,702.652(D)

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Feb 9, 2026Feb 9 9:01 PMJennifer ZacharyEVP, General Counsel
Option Exercise
121,573$87.100(D)

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Feb 6, 2026Feb 6 9:20 PMDavid Michael WilliamsEVP,Chief Info&Digital Officer
Option Exercise
5,000—4,600(D)

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Feb 4, 2026Feb 6 9:18 PMDalton E. Smart IIISVP Fin. - Global Controller
Option Exercise
4,000$62.078,130(D)

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Feb 4, 2026Feb 6 9:13 PMCaroline LitchfieldEVP & CFO
Option Exercise
41,997—0(D)

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Feb 4, 2026Feb 6 9:12 PMDean Y LiExecutive VP & President, MRL
Option Exercise
15,087—0(D)

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