Merck & Co., Inc.
MRK
73 insider filings · Latest: Aug 13, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| Feb 10, 2026 | Feb 10 9:38 PM | DEAN LI | Proposed Sale | 10,235 | $117.52 | $1.2M | — | View → |
| Feb 10, 2026 | Feb 10 9:04 PM | Dean Y LiExecutive VP & President, MRL | Sale | 10,235 | $117.52 | $1.2M | 92,035.05(D) | View → |
| Feb 9, 2026 | Feb 9 9:57 PM | JENNIFER ZACHARY | Proposed Sale | 121,573 | $119.15 | $14.5M | — | View → |
| Feb 9, 2026 | Feb 9 9:55 PM | CHIRFI GUINDO | Proposed Sale | 20,000 | $118.41 | $2.4M | — | View → |
| Feb 9, 2026 | Feb 9 9:04 PM | Chirfi GuindoChief Marketing Officer | Sale | 10,000 | $118.41 | $1.2M | 70,615.127(D) | View → |
| Feb 9, 2026 | Feb 9 9:01 PM | Jennifer ZacharyEVP, General Counsel | Sale | 121,573 | $119.15 | $14.5M | 68,915.671(D) | View → |
| Feb 6, 2026 | Feb 6 9:35 PM | RICHARD ROBERT DELUCA JR. | Proposed Sale | 37,685 | $120.92 | $4.6M | — | View → |
| Feb 6, 2026 | Feb 6 9:33 PM | DAVID WILLIAMS | Proposed Sale | 5,000 | $121.91 | $609.5K | — | View → |
| Feb 6, 2026 | Feb 6 9:20 PM | David Michael WilliamsEVP,Chief Info&Digital Officer | Sale | 5,000 | $121.91 | $609.5K | 30,837.743(D) | View → |
| Feb 6, 2026 | Feb 6 9:19 PM | JOHANNES JACOBUS OOSTHUIZEN | Proposed Sale | 15,000 | $121.87 | $1.8M | — | View → |
| Feb 4, 2026 | Feb 6 9:18 PM | Dalton E. Smart IIISVP Fin. - Global Controller | Sale | 6,400 | $119.68 | $765.9K | 8,204.816(D) | View → |
| Feb 6, 2026 | Feb 6 9:15 PM | Johannes Jacobus OosthuizenPresident, U.S. Market | Sale | 15,000 | $121.87 | $1.8M | 21,197.389(D) | View → |
| Feb 4, 2026 | Feb 6 9:13 PM | Caroline LitchfieldEVP & CFO | Sale | 41,997 | $119.61 | $5.0M | 90,192.194(D) | View → |
| Feb 4, 2026 | Feb 6 9:12 PM | Dean Y LiExecutive VP & President, MRL | Sale | 15,087 | $118.77 | $1.8M | 102,270.05(D) | View → |
| Feb 5, 2026 | Feb 6 9:10 PM | Chirfi GuindoChief Marketing Officer | Sale | 20,000 | $121.88 | $2.4M | 80,615.127(D) | View → |
| Feb 6, 2026 | Feb 6 9:08 PM | Richard R. DelucaEVP&Pres, Merck Animal Heallth | Sale | 37,685 | $120.92 | $4.6M | 160,173.834(D) | View → |
| Feb 4, 2026 | Feb 6 9:05 PM | Robert M DavisDirector, Chairman, CEO & President | Sale | 47,434 | $118.04 | $5.6M | 443,601.757(D) | View → |
| Feb 5, 2026 | Feb 5 9:25 PM | CHIRFI GUINDO | Proposed Sale | 20,000 | $121.88 | $2.4M | — | View → |
| Feb 4, 2026 | Feb 4 9:38 PM | DALTON SMART | Proposed Sale | 6,400 | $119.68 | $765.9K | — | View → |
| Feb 4, 2026 | Feb 4 9:29 PM | ROBERT M. DAVIS | Proposed Sale | 47,434 | $118.02 | $5.6M | — | View → |
Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| 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 → |
| 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 → |