| Insider | Role | Holdings | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| Jennifer Zachary | EVP, General Counsel | 45,509 | — | $25,204,185 | -$25,204,185 |
| Richard R. DeLuca | EVP&Pres, Merck Animal Heallth | 110,167 | — | $11,288,167 | -$11,288,167 |
| David Michael Williams | EVP,Chief Info&Digital Officer | 31,716 | — | $8,646,767 | -$8,646,767 |
| Chirfi Guindo | EVP, Access, Policy & Comms | 36,613 | — | $8,151,339 | -$8,151,339 |
| Robert M Davis | Chairman, CEO & President, Director | 450,351 | — | $5,599,327 | -$5,599,327 |
| Caroline Litchfield | EVP & CFO | 92,301 | — | $5,023,312 | -$5,023,312 |
| Dean Y Li | Executive VP & President, MRL | 94,431 | — | $2,994,668 | -$2,994,668 |
| Johannes Jacobus Oosthuizen | EVP, Oncology & Int?l | 21,895 | — | $2,542,736 | -$2,542,736 |
| David R. Maraldo | EVP & Pres. MMD | 18,212 | — | $2,407,797 | -$2,407,797 |
| Douglas M Baker Jr | Director | 16,000 | $1,327,500 | — | $1,327,500 |
| Dalton E. Smart III | SVP Fin. - Global Controller | 9,388 | — | $1,118,643 | -$1,118,643 |
| Cristal N Downing | Chief Comm. & Public Afrs Ofcr | 0 | — | $825,946 | -$825,946 |
| Inge G Thulin | Director | 2,933 | $250,000 | — | $250,000 |
| Date | Insider | Side | Shares | Price | Value | Holdings After | % of Position |
|---|---|---|---|---|---|---|---|
| 2026-08-13 | Chirfi Guindo | SELL | 10,000 | $135.00 | $1,350,000 | 36,613 | 21% |
| 2026-08-12 | Jennifer Zachary | SELL | 80,315 | $133.46 | $10,718,495 | 45,509 | 64% |
| 2026-08-12 | Richard R. DeLuca | SELL | 11,099 | $131.61 | $1,460,770 | 110,767 | 9% |
| 2026-08-12 | Richard R. DeLuca | SELL | 600 | $132.04 | $79,222 | 110,167 | 1% |
| 2026-08-11 | Richard R. DeLuca | SELL | 7,410 | $131.33 | $973,165 | 127,293 | 6% |
| 2026-08-11 | Richard R. DeLuca | SELL | 5,427 | $132.35 | $718,261 | 121,866 | 4% |
| 2026-08-10 | Richard R. DeLuca | SELL | 20,784 | $130.43 | $2,710,951 | 134,703 | 13% |
| 2026-08-06 | Richard R. DeLuca | SELL | 805 | $131.02 | $105,472 | 160,732 | 0% |
| 2026-08-06 | Richard R. DeLuca | SELL | 4,945 | $130.23 | $643,993 | 155,787 | 3% |
| 2026-08-06 | Richard R. DeLuca | SELL | 300 | $131.02 | $39,307 | 155,487 | 0% |
| 2026-08-06 | Chirfi Guindo | SELL | 15,000 | $131.00 | $1,965,000 | 46,613 | 24% |
| 2026-08-05 | David R. Maraldo | SELL | 6,311 | $128.72 | $812,339 | 18,212 | 26% |
| 2026-08-05 | David R. Maraldo | SELL | 9,709 | $128.72 | $1,249,722 | 18,212 | 35% |
| 2026-08-05 | David R. Maraldo | SELL | 2,686 | $128.72 | $345,736 | 18,212 | 13% |
| 2026-08-05 | David Michael Williams | SELL | 4,600 | $128.77 | $592,345 | 31,716 | 13% |
| 2026-08-05 | David Michael Williams | SELL | 13,542 | $128.77 | $1,743,813 | 31,716 | 30% |
| 2026-08-05 | David Michael Williams | SELL | 34,705 | $128.77 | $4,468,987 | 31,716 | 52% |
| 2026-02-12 | Chirfi Guindo | SELL | 10,000 | $121.46 | $1,214,562 | 60,615 | 14% |
| 2026-02-10 | Dean Y Li | SELL | 10,235 | $117.52 | $1,202,844 | 92,035 | 10% |
| 2026-02-09 | Chirfi Guindo | SELL | 10,000 | $118.41 | $1,184,101 | 70,615 | 12% |
| 2026-02-09 | Jennifer Zachary | SELL | 25,946 | $119.15 | $3,091,523 | 68,916 | 27% |
| 2026-02-09 | Jennifer Zachary | SELL | 56,792 | $119.15 | $6,766,892 | 68,916 | 45% |
| 2026-02-09 | Jennifer Zachary | SELL | 38,835 | $119.15 | $4,627,276 | 68,916 | 36% |
| 2026-02-06 | David Michael Williams | SELL | 5,000 | $121.91 | $609,525 | 30,838 | 14% |
| 2026-02-06 | Johannes Jacobus Oosthuizen | SELL | 15,000 | $121.87 | $1,827,992 | 21,197 | 41% |
| 2026-02-06 | Richard R. DeLuca | SELL | 37,685 | $120.92 | $4,557,025 | 160,174 | 19% |
| 2026-02-05 | Chirfi Guindo | SELL | 20,000 | $121.88 | $2,437,676 | 80,615 | 20% |
| 2026-02-04 | Dalton E. Smart III | SELL | 4,000 | $119.67 | $478,700 | 10,605 | 27% |
| 2026-02-04 | Dalton E. Smart III | SELL | 2,400 | $119.67 | $287,220 | 8,205 | 23% |
| 2026-02-04 | Caroline Litchfield | SELL | 41,997 | $119.61 | $5,023,312 | 90,192 | 32% |
| 2026-02-04 | Dean Y Li | SELL | 15,087 | $118.77 | $1,791,824 | 102,270 | 13% |
| 2026-02-04 | Robert M Davis | SELL | 14,972 | $117.38 | $1,757,407 | 476,064 | 3% |
| 2026-02-04 | Robert M Davis | SELL | 32,462 | $118.35 | $3,841,920 | 443,602 | 7% |
| 2025-11-10 | Cristal N Downing | SELL | 7,085 | $87.00 | $616,395 | 0 | 100% |
| 2025-11-03 | David Michael Williams | SELL | 8,614 | $83.59 | $720,040 | 24,578 | 26% |
| 2025-04-25 | Dalton E. Smart III | SELL | 4,262 | $82.76 | $352,723 | 7,778 | 35% |
| 2025-02-19 | Johannes Jacobus Oosthuizen | SELL | 8,500 | $84.09 | $714,745 | 30,705 | 22% |
| 2025-02-13 | David Michael Williams | SELL | 6,000 | $85.34 | $512,057 | 24,123 | 20% |
| 2025-02-06 | Inge G Thulin | BUY | 2,833 | $88.25 | $250,000 | 2,933 | 2833% |
| 2025-02-06 | Cristal N Downing | SELL | 2,361 | $88.76 | $209,551 | 7,085 | 25% |
| 2025-02-05 | Douglas M Baker Jr | BUY | 15,000 | $88.50 | $1,327,500 | 16,000 | 1500% |