Merck & Co., Inc.
MRK
76 insider filings · Latest: Sep 30, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| Aug 13, 2026 | Aug 13 9:02 PM | Chirfi GuindoEVP, Access, Policy & Comms | Sale | 10,000 | $135.00 | $1.4M | 36,613.127(D) | View → |
| Aug 13, 2026 | Aug 13 8:15 PM | CHIRFI GUINDO | Proposed Sale | 10,000 | $135.00 | $1.4M | — | View → |
| Aug 12, 2026 | Aug 13 8:11 PM | Jennifer ZacharyEVP, General Counsel | Sale | 80,315 | $133.46 | $10.7M | 45,509.254(D) | View → |
| Aug 12, 2026 | Aug 12 8:23 PM | RICHARD ROBERT DELUCA JR | Proposed Sale | 11,699 | $131.63 | $1.5M | — | View → |
| Aug 12, 2026 | Aug 12 8:19 PM | JENNIFER L ZACHARY | Proposed Sale | 80,315 | $133.46 | $10.7M | — | View → |
| Aug 12, 2026 | Aug 12 8:10 PM | Richard R. DelucaEVP&Pres, Merck Animal Heallth | Sale | 11,699 | $131.63 | $1.5M | 110,167.07(D) | View → |
| Aug 11, 2026 | Aug 12 8:10 PM | Richard R. DelucaEVP&Pres, Merck Animal Heallth | Sale | 12,837 | $131.76 | $1.7M | 121,866.07(D) | View → |
| Aug 10, 2026 | Aug 12 8:10 PM | Richard R. DelucaEVP&Pres, Merck Animal Heallth | Sale | 20,784 | $130.43 | $2.7M | 134,703.07(D) | View → |
| Aug 11, 2026 | Aug 11 8:14 PM | RICHARD ROBERT DELUCA JR | Proposed Sale | 12,837 | $131.76 | $1.7M | — | View → |
| Aug 10, 2026 | Aug 10 8:43 PM | RICHARD ROBERT DELUCA JR | Proposed Sale | 20,784 | $130.43 | $2.7M | — | View → |
| Aug 6, 2026 | Aug 10 8:28 PM | Richard R. DelucaEVP&Pres, Merck Animal Heallth | Sale | 6,050 | $130.38 | $788.8K | 155,487.07(D) | View → |
| Aug 5, 2026 | Aug 7 8:21 PM | David R. MaraldoEVP & Pres. MMD | Sale | 18,706 | $128.72 | $2.4M | 18,212.434(D) | View → |
| Aug 5, 2026 | Aug 7 8:19 PM | David Michael WilliamsEVP,Chief Info&Digital Officer | Sale | 52,847 | $128.77 | $6.8M | 31,716.037(D) | View → |
| Aug 6, 2026 | Aug 7 8:17 PM | Chirfi GuindoEVP, Access, Policy & Comms | Sale | 15,000 | $131.00 | $2.0M | 46,613.127(D) | View → |
| Aug 6, 2026 | Aug 6 8:47 PM | CHIRFI GUINDO | Proposed Sale | 15,000 | $131.00 | $2.0M | — | View → |
| Aug 6, 2026 | Aug 6 8:45 PM | RICHARD ROBERT DELUCA JR | Proposed Sale | 6,050 | $130.38 | $788.8K | — | View → |
| Aug 5, 2026 | Aug 5 8:27 PM | DAVID M WILLIAMS | Proposed Sale | 52,847 | $128.77 | $6.8M | — | View → |
| Aug 5, 2026 | Aug 5 8:26 PM | DAVID MARALDO | Proposed Sale | 18,706 | $128.72 | $2.4M | — | View → |
| Feb 9, 2026 | Feb 13 9:15 PM | CHIRFI GUINDO | Proposed Sale | 20,000 | $118.41 | $2.4M | — | View → |
| Feb 12, 2026 | Feb 12 9:02 PM | Chirfi GuindoChief Marketing Officer | Sale | 10,000 | $121.46 | $1.2M | 60,615.127(D) | View → |
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Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Apr 29, 2026 | May 1 9:55 PM | Dalton E. Smart IIISVP Fin. - Global Controller | Option Exercise | 944 | — | 1,889(D) | View → |
| Apr 29, 2026 | May 1 9:45 PM | Dean Y LiExecutive VP & President, MRL | Option Exercise | 4,722 | — | 9,444(D) | View → |
| Apr 29, 2026 | May 1 9:43 PM | Jennifer ZacharyEVP, General Counsel | Option Exercise | 2,951 | — | 5,903(D) | View → |
| Apr 30, 2026 | May 1 9:42 PM | Betty D LarsonEVP, Chief HR Officer | Option Exercise | 11,350 | — | 11,350(D) | View → |
| Apr 29, 2026 | May 1 9:42 PM | Betty D LarsonEVP, Chief HR Officer | Option Exercise | 2,085 | — | 4,172(D) | View → |
| Apr 29, 2026 | May 1 9:39 PM | Caroline LitchfieldEVP & CFO | Option Exercise | 3,935 | — | 7,870(D) | View → |
| Apr 29, 2026 | May 1 9:38 PM | Robert M DavisDirector, Chairman, CEO & President | Option Exercise | 13,300 | — | 26,601(D) | View → |
| Apr 29, 2026 | May 1 9:34 PM | Johannes Jacobus OosthuizenEVP, Oncology & Int?l | Option Exercise | 1,377 | — | 2,755(D) | View → |
| Mar 31, 2026 | Apr 1 5:47 PM | Christine E SeidmanDirector | Grant/Award | 67.545 | — | 19,238.328(D) | View → |
| Mar 31, 2026 | Apr 1 5:44 PM | Thomas H GlocerDirector | Grant/Award | 405.271 | — | 108,293.493(D) | View → |
| Mar 31, 2026 | Apr 1 5:42 PM | Mary Ellen CoeDirector | Grant/Award | 249.397 | — | 29,702.652(D) | View → |
| Feb 9, 2026 | Feb 9 9:01 PM | Jennifer ZacharyEVP, General Counsel | Option Exercise | 121,573 | $87.10 | 0(D) | View → |
| Feb 6, 2026 | Feb 6 9:20 PM | David Michael WilliamsEVP,Chief Info&Digital Officer | Option Exercise | 5,000 | — | 4,600(D) | View → |
| Feb 4, 2026 | Feb 6 9:18 PM | Dalton E. Smart IIISVP Fin. - Global Controller | Option Exercise | 4,000 | $62.07 | 8,130(D) | View → |
| Feb 4, 2026 | Feb 6 9:13 PM | Caroline LitchfieldEVP & CFO | Option Exercise | 41,997 | — | 0(D) | View → |
| Feb 4, 2026 | Feb 6 9:12 PM | Dean Y LiExecutive VP & President, MRL | Option Exercise | 15,087 | — | 0(D) | View → |
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