Merck & Co., Inc.
MRK
DELAYED 1 MONTH

37 insider filings · Latest: May 29, 2026

Common Stock Transactions

No transactions found.

Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
May 5, 2026May 7 3:45 PMDavid R. MaraldoEVP & Pres. MMD
Grant/Award
29,155$113.1521,731(D)

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May 5, 2026May 7 3:42 PMJohannes Jacobus OosthuizenEVP, Oncology & Int?l
Grant/Award
41,649$113.1531,044(D)

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May 5, 2026May 7 3:39 PMDalton E. Smart IIISVP Fin. - Global Controller
Grant/Award
7,343$113.155,045(D)

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May 5, 2026May 7 3:36 PMChirfi GuindoEVP, Access, Policy & Comms
Grant/Award
26,030$113.1519,402(D)

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May 2, 2026May 5 5:51 PMDalton E. Smart IIISVP Fin. - Global Controller
Option Exercise
383—0(D)

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May 2, 2026May 5 5:47 PMDavid R. MaraldoEVP & Pres. MMD
Option Exercise
552—0(D)

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Apr 29, 2026May 1 10:54 PMChirfi GuindoEVP, Access, Policy & Comms
Option Exercise
1,967—3,935(D)

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Apr 29, 2026May 1 10:32 PMSanat ChattopadhyayExe V-P & Pres. MMD
Option Exercise
2,597—5,194(D)

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Apr 29, 2026May 1 10:20 PMRichard R. DelucaEVP&Pres, Merck Animal Heallth
Option Exercise
2,518—5,037(D)

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Apr 29, 2026May 1 9:56 PMDavid Michael WilliamsEVP,Chief Info&Digital Officer
Option Exercise
1,377—2,755(D)

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Apr 30, 2026May 1 9:55 PMDalton E. Smart IIISVP Fin. - Global Controller
Option Exercise
464—465(D)

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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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