Merck & Co., Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Downing Cristal N | Chief Comm. & Public Afrs Ofcr | Sale | 7,085 | $87.00 | $616,395 | — | Nov 10, 2025 |
| Williams David Michael | EVP,Chief Info&Digital Officer | Sale | 8,614 | $83.59 | $720,044 | 24,578 | Nov 3, 2025 |
| Williams David Michael | EVP,Chief Info&Digital Officer | Tax Withholding | 8,432 | $79.29 | $668,573 | 33,013 | Aug 4, 2025 |
| Guindo Chirfi | Chief Marketing Officer | Tax Withholding | 18,175 | $79.29 | $1,441,096 | 89,234 | Aug 4, 2025 |
| Smart Dalton E. III | SVP Fin. - Global Controller | Tax Withholding | 588 | $83.18 | $48,910 | 9,539 | May 3, 2025 |
| Smart Dalton E. III | SVP Fin. - Global Controller | Option Exercise | 464 | $84.71 | $39,305 | 8,242 | May 2, 2025 |
| Romanelli Joseph | President, Human Health Int?l | Tax Withholding | 1,115 | $83.26 | $92,835 | 22,946 | Apr 30, 2025 |
| Larson Betty D | EVP, Chief HR Officer | Option Exercise | 11,350 | $84.71 | $961,458 | 11,350 | Apr 30, 2025 |
| Smart Dalton E. III | SVP Fin. - Global Controller | Sale | 4,262 | $82.76 | $352,723 | 7,778 | Apr 25, 2025 |
| Oosthuizen Johannes Jacobus | President, U.S. Market | Sale | 8,500 | $84.09 | $714,765 | 30,705 | Feb 19, 2025 |
| Williams David Michael | EVP,Chief Info&Digital Officer | Sale | 6,000 | $85.34 | $512,040 | 24,123 | Feb 13, 2025 |
| Oosthuizen Johannes Jacobus | President, U.S. Market | Option Exercise | 13,002 | $87.28 | $1,134,815 | 45,609 | Feb 8, 2025 |
| THULIN INGE G | — | Purchase | 2,833 | $88.25 | $250,000 | 2,933 | Feb 6, 2025 |
| Downing Cristal N | Chief Comm. & Public Afrs Ofcr | Sale | 2,361 | $88.76 | $209,562 | 7,085 | Feb 6, 2025 |
| BAKER DOUGLAS M JR | — | Purchase | 15,000 | $88.50 | $1,327,500 | 16,000 | Feb 5, 2025 |
| Zachary Jennifer | EVP, General Counsel | Award / Grant | 25,423 | $97.94 | $2,489,929 | 55,286 | Jan 27, 2025 |
| Williams David Michael | EVP,Chief Info&Digital Officer | Award / Grant | 10,246 | $97.94 | $1,003,493 | 30,123 | Jan 27, 2025 |
| Smart Dalton | SVP Fin. - Global Controller | Award / Grant | 2,586 | $97.94 | $253,273 | 7,014 | Jan 27, 2025 |
| Oosthuizen Johannes Jacobus | President, U.S. Market | Award / Grant | 8,664 | $97.94 | $848,552 | 32,607 | Jan 27, 2025 |
| Litchfield Caroline | EVP & CFO | Award / Grant | 23,432 | $97.94 | $2,294,930 | 74,340 | Jan 27, 2025 |
| Li Dean Y | Executive VP & President, MRL | Award / Grant | 32,621 | $97.94 | $3,194,901 | 79,592 | Jan 27, 2025 |
| Downing Cristal N | Chief Comm. & Public Afrs Ofcr | Award / Grant | 9,446 | $97.94 | $925,141 | 9,446 | Jan 27, 2025 |
| DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Award / Grant | 25,438 | $97.94 | $2,491,398 | 178,993 | Jan 27, 2025 |
| Davis Robert M | Chairman, CEO & President | Award / Grant | 95,275 | $97.94 | $9,331,234 | 443,602 | Jan 27, 2025 |
| Chattopadhyay Sanat | Exe V-P & Pres. MMD | Award / Grant | 28,136 | $97.94 | $2,755,640 | 78,758 | Jan 27, 2025 |
| Guindo Chirfi | Chief Marketing Officer | Award / Grant | 28,158 | $97.94 | $2,757,795 | 69,144 | Jan 27, 2025 |
| Guindo Chirfi | Chief Marketing Officer | Tax Withholding | 17,412 | $115.20 | $2,005,862 | 40,370 | Aug 5, 2024 |
| DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Tax Withholding | 13,360 | $127.51 | $1,703,534 | 150,360 | May 4, 2024 |
| Klobuchar Michael A | EVP - Chief Strategy Officer | Option Exercise | 887 | $127.51 | $113,101 | 24,058 | May 4, 2024 |
| Oosthuizen Johannes Jacobus | President, U.S. Market | Option Exercise | 912 | $127.51 | $116,289 | 24,271 | May 4, 2024 |
| Smart Dalton | SVP Fin. - Global Controller | Tax Withholding | 590 | $128.26 | $75,673 | 4,118 | May 3, 2024 |
| Romanelli Joseph | President, Human Health Int?l | Tax Withholding | 1,115 | $128.80 | $143,612 | 20,716 | May 2, 2024 |
| Smart Dalton | SVP Fin. - Global Controller | Tax Withholding | 131 | $128.80 | $16,873 | 2,917 | May 2, 2024 |
| Litchfield Caroline | EVP & CFO | Sale | 38,291 | $125.50 | $4,805,521 | 50,908 | Feb 14, 2024 |
| Davis Robert M | Chairman, CEO & President | Sale | 124,676 | $125.74 | $15,676,760 | 373,651 | Feb 13, 2024 |
| Romanelli Joseph | President, Human Health Int?l | Sale | 1,000 | $124.89 | $124,890 | 19,569 | Feb 13, 2024 |
| Li Dean Y | Executive VP & President, MRL | Sale | 14,702 | $125.50 | $1,845,101 | 46,242 | Feb 9, 2024 |
| Williams David Michael | EVP,Chief Info&Digital Officer | Sale | 1,451 | $127.57 | $185,104 | 19,812 | Feb 7, 2024 |
| Oosthuizen Johannes Jacobus | President, U.S. Market | Option Exercise | 7,119 | $87.10 | $620,065 | 42,286 | Feb 2, 2024 |
| MIZELL STEVEN | EVP, Chief HR Officer | Option Exercise | 32,170 | $73.73 | $2,371,894 | 74,313 | Feb 2, 2024 |
| Zachary Jennifer | EVP, General Counsel | Option Exercise | 19,417 | $87.10 | $1,691,221 | 78,557 | Feb 2, 2024 |
| Oosthuizen Johannes Jacobus | President, U.S. Market | Award / Grant | 3,133 | $119.43 | $374,174 | 21,349 | Jan 22, 2024 |
| Smart Dalton | SVP Fin. - Global Controller | Award / Grant | 2,661 | $119.43 | $317,803 | 2,667 | Jan 22, 2024 |
| Williams David Michael | EVP,Chief Info&Digital Officer | Award / Grant | 10,196 | $119.43 | $1,217,708 | 21,263 | Jan 22, 2024 |
| MIZELL STEVEN | EVP, Chief HR Officer | Award / Grant | 18,384 | $119.43 | $2,195,601 | 41,319 | Jan 22, 2024 |
| Zachary Jennifer | EVP, General Counsel | Award / Grant | 23,298 | $119.43 | $2,782,480 | 59,140 | Jan 22, 2024 |
| Li Dean Y | Executive VP & President, MRL | Award / Grant | 25,760 | $119.43 | $3,076,517 | 46,242 | Jan 22, 2024 |
| Davis Robert M | Chairman, CEO & President | Award / Grant | 76,510 | $119.43 | $9,137,589 | 348,327 | Jan 22, 2024 |
| DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Award / Grant | 23,296 | $119.43 | $2,782,241 | 135,783 | Jan 22, 2024 |
| Chattopadhyay Sanat | Exe V-P & Pres. MMD | Award / Grant | 26,716 | $119.43 | $3,190,692 | 26,716 | Jan 22, 2024 |