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 |
|---|---|---|---|---|---|---|---|
| May 29, 2026 | Jun 2 5:57 PM | Douglas M Baker JRDirector | Grant/Award | 1,853.1 | — | 11,518.208(D) | View → |
| May 5, 2026 | May 7 4:18 PM | Jennifer ZacharyEVP, General Counsel | Grant/Award | 47,376 | $113.15 | 35,312(D) | View → |
| May 5, 2026 | May 7 4:14 PM | David Michael WilliamsEVP,Chief Info&Digital Officer | Grant/Award | 18,222 | $113.15 | 13,582(D) | View → |
| May 5, 2026 | May 7 4:10 PM | Caroline LitchfieldEVP & CFO | Grant/Award | 62,474 | $113.15 | 46,566(D) | View → |
| May 5, 2026 | May 7 4:07 PM | Dean Y LiExecutive VP & President, MRL | Grant/Award | 78,092 | $113.15 | 58,207(D) | View → |
| May 5, 2026 | May 7 4:03 PM | Betty D LarsonEVP, Chief HR Officer | Grant/Award | 31,237 | $113.15 | 23,283(D) | View → |
| May 5, 2026 | May 7 3:56 PM | Richard R. DelucaEVP&Pres, Merck Animal Heallth | Grant/Award | 46,855 | $113.15 | 34,924(D) | View → |
| May 5, 2026 | May 7 3:52 PM | Robert M DavisDirector, Chairman, CEO & President | Grant/Award | 187,421 | $113.15 | 139,697(D) | View → |
| May 5, 2026 | May 7 3:48 PM | Brian FoardEVP, Specialty, Pharma, & ID | Grant/Award | 77,000 | $113.15 | 31,044(D) | View → |
| May 5, 2026 | May 7 3:45 PM | David R. MaraldoEVP & Pres. MMD | Grant/Award | 29,155 | $113.15 | 21,731(D) | View → |
| May 5, 2026 | May 7 3:42 PM | Johannes Jacobus OosthuizenEVP, Oncology & Int?l | Grant/Award | 41,649 | $113.15 | 31,044(D) | View → |
| May 5, 2026 | May 7 3:39 PM | Dalton E. Smart IIISVP Fin. - Global Controller | Grant/Award | 7,343 | $113.15 | 5,045(D) | View → |
| May 5, 2026 | May 7 3:36 PM | Chirfi GuindoEVP, Access, Policy & Comms | Grant/Award | 26,030 | $113.15 | 19,402(D) | View → |
| May 2, 2026 | May 5 5:51 PM | Dalton E. Smart IIISVP Fin. - Global Controller | Option Exercise | 383 | — | 0(D) | View → |
| May 2, 2026 | May 5 5:47 PM | David R. MaraldoEVP & Pres. MMD | Option Exercise | 552 | — | 0(D) | View → |
| Apr 29, 2026 | May 1 10:54 PM | Chirfi GuindoEVP, Access, Policy & Comms | Option Exercise | 1,967 | — | 3,935(D) | View → |
| Apr 29, 2026 | May 1 10:32 PM | Sanat ChattopadhyayExe V-P & Pres. MMD | Option Exercise | 2,597 | — | 5,194(D) | View → |
| Apr 29, 2026 | May 1 10:20 PM | Richard R. DelucaEVP&Pres, Merck Animal Heallth | Option Exercise | 2,518 | — | 5,037(D) | View → |
| Apr 29, 2026 | May 1 9:56 PM | David Michael WilliamsEVP,Chief Info&Digital Officer | Option Exercise | 1,377 | — | 2,755(D) | View → |
| Apr 30, 2026 | May 1 9:55 PM | Dalton E. Smart IIISVP Fin. - Global Controller | Option Exercise | 464 | — | 465(D) | View → |