| 2023-01-09 | Chattopadhyay Sanat | Exe V-P & Pres. MMD | Sale+OE | 1,702 | $114.46 | $194,812.96 | -5.5% | → |
| 2022-12-19 | Romanelli Joseph | President, Human Health Int?l | Buy | 259 | $109.85 | $28,450.05 | +0.3% | → |
| 2022-11-10 | MIZELL STEVEN | EVP, Chief HR Officer | Sale+OE | 35,000 | $101.18 | $3,541,277.50 | -35.3% | → |
| 2022-11-09 | Davis Robert M | CEO & President | Sale+OE | 167,613 | $102.44 | $17,169,839.61 | -16.9% | → |
| 2022-11-09 | Oosthuizen Johannes Jacobus | President, U.S. Market | Sell | 1,795 | $103.21 | $185,261.95 | -9.7% | → |
| 2022-11-07 | FRAZIER KENNETH C | Executive Chair | Sale+OE | 235,769 | $99.55 | $23,471,432.58 | -9.0% | → |
| 2022-11-07 | Oosthuizen Johannes Jacobus | President, U.S. Market | Sale+OE | 45,561 | $99.47 | $4,531,980.01 | -71.1% | → |
| 2022-11-04 | FRAZIER KENNETH C | Executive Chair | Sale+OE | 470,000 | $98.66 | $46,372,118.02 | -14.1% | → |
| 2022-11-02 | FRAZIER KENNETH C | Executive Chair | Sale+OE | 600,000 | $99.86 | $59,914,706.34 | -13.9% | → |
| 2022-10-31 | FRAZIER KENNETH C | Executive Chair | Sale+OE | 867,084 | $100.44 | $87,090,363.48 | -16.4% | → |
| 2022-10-28 | Oosthuizen Johannes Jacobus | President, U.S. Market | Sale+OE | 3,633 | $100.21 | $364,064.75 | -25.0% | → |
| 2022-10-28 | Karachun Rita A | Sr. VP Fince-Global Controller | Sale+OE | 31,997 | $100.34 | $3,210,684.57 | -43.8% | → |
| 2022-10-28 | MIZELL STEVEN | EVP, Chief HR Officer | Sale+OE | 25,000 | $99.63 | $2,490,720.00 | -25.7% | → |
| 2022-10-28 | Chattopadhyay Sanat | Exe V-P & Pres. MMD | Sale+OE | 100,292 | $100.10 | $10,039,379.64 | -68.7% | → |
| 2022-10-28 | Zachary Jennifer | EVP, General Counsel | Sale+OE | 165,255 | $99.38 | $16,422,892.71 | -53.9% | → |
| 2022-10-28 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sale+OE | 164,557 | $100.26 | $16,499,093.68 | -54.6% | → |
| 2021-11-09 | FRAZIER KENNETH C | Executive Chair | Sale+OE | 663,881 | $82.26 | $54,611,361.66 | -35.6% | → |
| 2021-11-04 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sale+OE | 29,782 | $90.40 | $2,692,298.76 | -20.3% | → |
| 2021-11-04 | Litchfield Caroline | EVP & CFO | Sale+OE | 18,335 | $91.00 | $1,668,503.34 | -43.2% | → |
| 2021-11-03 | Karachun Rita A | Sr. VP Fince-Global Controller | Sale+OE | 25,000 | $88.45 | $2,211,215.00 | -41.1% | → |
| 2021-11-01 | Gerberding Julie L. | EVP, Chief Patient Officer | Sale+OE | 96,270 | $87.91 | $8,462,681.74 | -71.1% | → |
| 2021-11-01 | Clyburn Frank | EVP & Pres ? Human Health | Sale+OE | 39,762 | $87.87 | $3,493,878.99 | -29.1% | → |
| 2021-10-29 | DeLuca Richard R. | EVP&Pres, Merck Animal Heallth | Sale+OE | 135,405 | $87.56 | $11,856,264.91 | -53.7% | → |
| 2021-10-29 | Chattopadhyay Sanat | Exe V-P & Pres. MMD | Sale+OE | 24,619 | $87.32 | $2,149,731.08 | -20.9% | → |
| 2021-05-10 | Clyburn Frank | EVP & Pres ? Human Health | Sale+OE | 19,324 | $78.32 | $1,513,440.22 | -17.0% | → |
| 2020-11-09 | FRAZIER KENNETH C | Chairman, President & CEO | Sell | 280,000 | $81.42 | $22,797,011.35 | -22.4% | → |