| Insider Trading |
Relationship |
Date |
Transaction |
Cost |
#Shares |
Value ($) |
#Shares Total |
SEC Form 4 |
| Guindo Chirfi | EVP, Access, Policy & Comms | Apr 29 '26 | Option Exercise | 110.03 | 1,967 | 216,429 | 62,582 | May 01 06:54 PM | | Chattopadhyay Sanat | Exe V-P & Pres. MMD | Apr 29 '26 | Option Exercise | 110.03 | 2,597 | 285,748 | 16,477 | May 01 06:32 PM | | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Apr 29 '26 | Option Exercise | 110.03 | 2,518 | 277,056 | 162,778 | May 01 06:20 PM | | Williams David Michael | EVP,Chief Info&Digital Officer | Apr 29 '26 | Option Exercise | 110.03 | 1,377 | 151,511 | 32,395 | May 01 05:56 PM | | Smart Dalton E. III | SVP Fin. - Global Controller | Apr 29 '26 | Option Exercise | 110.03 | 944 | 103,868 | 9,156 | May 01 05:55 PM | | Smart Dalton E. III | SVP Fin. - Global Controller | Apr 30 '26 | Option Exercise | 110.95 | 464 | 51,481 | 9,296 | May 01 05:55 PM | | Li Dean Y | Executive VP & President, MRL | Apr 29 '26 | Option Exercise | 110.03 | 4,722 | 519,562 | 96,757 | May 01 05:45 PM | | Zachary Jennifer | EVP, General Counsel | Apr 29 '26 | Option Exercise | 110.03 | 2,951 | 324,699 | 72,351 | May 01 05:43 PM | | Larson Betty D | EVP, Chief HR Officer | Apr 30 '26 | Option Exercise | 110.95 | 11,350 | 1,259,282 | 18,917 | May 01 05:42 PM | | Larson Betty D | EVP, Chief HR Officer | Apr 29 '26 | Option Exercise | 110.03 | 2,085 | 229,413 | 8,282 | May 01 05:42 PM | | Litchfield Caroline | EVP & CFO | Apr 29 '26 | Option Exercise | 110.03 | 3,935 | 432,968 | 94,239 | May 01 05:39 PM | | Davis Robert M | Chairman, CEO & President | Apr 29 '26 | Option Exercise | 110.03 | 13,300 | 1,463,399 | 456,902 | May 01 05:38 PM | | Oosthuizen Johannes Jacobus | EVP, Oncology & Int?l | Apr 29 '26 | Option Exercise | 110.03 | 1,377 | 151,511 | 22,574 | May 01 05:34 PM | | Guindo Chirfi | Chief Marketing Officer | Feb 12 '26 | Sale | 121.46 | 10,000 | 1,214,562 | 60,615 | Feb 12 04:02 PM | | DEAN LI | Officer | Feb 10 '26 | Proposed Sale | 117.52 | 10,235 | 1,202,844 | | Feb 10 04:38 PM | | Li Dean Y | Executive VP & President, MRL | Feb 10 '26 | Sale | 117.52 | 10,235 | 1,202,844 | 92,035 | Feb 10 04:04 PM | | JENNIFER ZACHARY | Officer | Feb 09 '26 | Proposed Sale | 119.15 | 121,573 | 14,485,690 | | Feb 09 04:57 PM | | CHIRFI GUINDO | Officer | Feb 09 '26 | Proposed Sale | 118.41 | 20,000 | 2,368,202 | | Feb 09 04:55 PM | | Guindo Chirfi | Chief Marketing Officer | Feb 09 '26 | Sale | 118.41 | 10,000 | 1,184,101 | 70,615 | Feb 09 04:04 PM | | Zachary Jennifer | EVP, General Counsel | Feb 09 '26 | Option Exercise | 119.15 | 121,573 | 14,485,690 | 125,708 | Feb 09 04:01 PM | | Zachary Jennifer | EVP, General Counsel | Feb 09 '26 | Sale | 119.15 | 121,573 | 14,485,690 | 68,916 | Feb 09 04:01 PM | | RICHARD ROBERT DELUCA JR. | Officer | Feb 06 '26 | Proposed Sale | 120.92 | 37,685 | 4,557,025 | | Feb 06 04:35 PM | | DAVID WILLIAMS | Officer | Feb 06 '26 | Proposed Sale | 121.91 | 5,000 | 609,525 | | Feb 06 04:33 PM | | Williams David Michael | EVP,Chief Info&Digital Officer | Feb 06 '26 | Option Exercise | 77.62 | 5,000 | 388,100 | 35,838 | Feb 06 04:20 PM | | Williams David Michael | EVP,Chief Info&Digital Officer | Feb 06 '26 | Sale | 121.91 | 5,000 | 609,525 | 30,838 | Feb 06 04:20 PM | | JOHANNES JACOBUS OOSTHUIZEN | Officer | Feb 06 '26 | Proposed Sale | 121.87 | 15,000 | 1,827,992 | | Feb 06 04:19 PM | | Smart Dalton E. III | SVP Fin. - Global Controller | Feb 04 '26 | Option Exercise | 62.07 | 4,000 | 248,280 | 14,605 | Feb 06 04:18 PM | | Smart Dalton E. III | SVP Fin. - Global Controller | Feb 04 '26 | Sale | 119.67 | 6,400 | 765,920 | 8,205 | Feb 06 04:18 PM | | Oosthuizen Johannes Jacobus | President, U.S. Market | Feb 06 '26 | Sale | 121.87 | 15,000 | 1,827,992 | 21,197 | Feb 06 04:15 PM | | Litchfield Caroline | EVP & CFO | Feb 04 '26 | Option Exercise | 53.06 | 41,997 | 2,228,361 | 132,189 | Feb 06 04:13 PM | | Litchfield Caroline | EVP & CFO | Feb 04 '26 | Sale | 119.61 | 41,997 | 5,023,312 | 90,192 | Feb 06 04:13 PM | | Li Dean Y | Executive VP & President, MRL | Feb 04 '26 | Option Exercise | 56.04 | 15,087 | 845,475 | 117,357 | Feb 06 04:12 PM | | Li Dean Y | Executive VP & President, MRL | Feb 04 '26 | Sale | 118.77 | 15,087 | 1,791,824 | 102,270 | Feb 06 04:12 PM | | Guindo Chirfi | Chief Marketing Officer | Feb 05 '26 | Sale | 121.88 | 20,000 | 2,437,676 | 80,615 | Feb 06 04:10 PM | | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Feb 06 '26 | Sale | 120.92 | 37,685 | 4,557,025 | 160,174 | Feb 06 04:08 PM | | Davis Robert M | Chairman, CEO & President | Feb 04 '26 | Sale | 118.04 | 47,434 | 5,599,327 | 443,602 | Feb 06 04:05 PM | | CHIRFI GUINDO | Officer | Feb 05 '26 | Proposed Sale | 121.88 | 20,000 | 2,437,676 | | Feb 05 04:25 PM | | DALTON SMART | Officer | Feb 04 '26 | Proposed Sale | 119.67 | 6,400 | 765,920 | | Feb 04 04:38 PM | | ROBERT M. DAVIS | Officer | Feb 04 '26 | Proposed Sale | 118.02 | 47,434 | 5,598,137 | | Feb 04 04:29 PM | | DEAN LI | Officer | Feb 04 '26 | Proposed Sale | 118.77 | 15,087 | 1,791,824 | | Feb 04 04:27 PM | | CAROLINE A LITCHFIELD | Officer | Feb 04 '26 | Proposed Sale | 119.61 | 41,997 | 5,023,312 | | Feb 04 04:26 PM | | Downing Cristal N | Chief Comm. & Public Afrs Ofcr | Nov 10 '25 | Sale | 87.00 | 7,085 | 616,395 | 0 | Nov 12 04:01 PM | | CRISTAL DOWNING | Officer | Nov 10 '25 | Proposed Sale | 87.00 | 7,085 | 616,395 | | Nov 10 04:07 PM | | Williams David Michael | EVP,Chief Info&Digital Officer | Nov 03 '25 | Sale | 83.59 | 8,614 | 720,040 | 24,578 | Nov 04 04:02 PM | | DAVID WILLIAMS | Officer | Nov 03 '25 | Proposed Sale | 83.59 | 8,614 | 720,040 | | Nov 03 04:09 PM | | Williams David Michael | EVP,Chief Info&Digital Officer | Aug 04 '25 | Option Exercise | 79.29 | 17,119 | 1,357,366 | 41,445 | Aug 05 08:46 AM | | Guindo Chirfi | Chief Marketing Officer | Aug 04 '25 | Option Exercise | 79.29 | 36,903 | 2,926,039 | 107,409 | Aug 05 08:43 AM |
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