Insider trading activities (stock purchases, sales, and option exercises)
reported by insiders of Merck & Co., Inc. (MRK)
since 2011 are shown in Table 1 and Table 2.
Table 1 shows the monthly insider trading data of Merck & Co., Inc..
Table 2 shows the detailed insider transactions.
This company's CIK number is 310158.
Total stock buying since 2011: $1,621,756.
Total stock sales since 2011: $696,530,264.
Total stock option exercises since 2011: $272,503,850.
Table 3. Detailed insider trading at Merck & Co., Inc. (MRK)
| Trade Date |
Insider Name |
Trade Type |
Shares |
Price ($) |
Value ($) |
| 2025-08-04 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 17,119 | 79.29 | 1,357,365 |
| 2025-08-04 | Guindo Chirfi (Chief Marketing Officer) | Option Ex | 36,903 | 79.29 | 2,926,038 |
| 2025-05-03 | Smart Dalton E. Iii (SVP Fin. - Global Controller) | Option Ex | 2,050 | 83.18 | 170,519 |
| 2025-05-02 | Smart Dalton E. Iii (SVP Fin. - Global Controller) | Option Ex | 381 | 83.26 | 31,722 |
| 2025-05-02 | Romanelli Joseph (President, Human Health Int?l) | Option Ex | 2,262 | 83.26 | 188,334 |
| 2025-04-30 | Smart Dalton E. Iii (SVP Fin. - Global Controller) | Option Ex | 464 | 84.71 | 39,305 |
| 2025-04-30 | Romanelli Joseph (President, Human Health Int?l) | Option Ex | 2,063 | 84.71 | 174,756 |
| 2025-04-30 | Larson Betty D (EVP, Chief HR Officer) | Option Ex | 11,350 | 84.71 | 961,458 |
| 2025-02-19 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Sale | 8,500 | 84.09 | 714,748 |
| 2025-02-13 | Williams David Michael (EVP,Chief Info&Digital Officer) | Sale | 6,000 | 85.34 | 512,058 |
| 2025-02-08 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Option Ex | 13,002 | 87.28 | 1,134,814 |
| 2025-02-06 | Downing Cristal N (Chief Comm. & Public Afrs Ofcr) | Sale | 2,361 | 88.75 | 209,550 |
| 2025-02-06 | Thulin Inge G (Director) | Buy | 2,832 | 88.25 | 249,924 |
| 2025-02-05 | Baker Douglas M Jr (Director) | Buy | 15,000 | 88.50 | 1,327,500 |
| 2024-08-05 | Guindo Chirfi (Chief Marketing Officer) | Option Ex | 36,901 | 115.20 | 4,250,995 |
| 2024-05-04 | Smart Dalton (SVP Fin. - Global Controller) | Option Ex | 612 | 127.51 | 78,036 |
| 2024-05-04 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Option Ex | 912 | 127.51 | 116,289 |
| 2024-05-04 | Klobuchar Michael A (EVP - Chief Strategy Officer) | Option Ex | 887 | 127.51 | 113,101 |
| 2024-05-04 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Option Ex | 27,126 | 127.51 | 3,458,836 |
| 2024-05-03 | Smart Dalton (SVP Fin. - Global Controller) | Option Ex | 2,046 | 128.26 | 262,419 |
| 2024-05-02 | Smart Dalton (SVP Fin. - Global Controller) | Option Ex | 381 | 128.80 | 49,072 |
| 2024-05-02 | Romanelli Joseph (President, Human Health Int?l) | Option Ex | 2,262 | 128.80 | 291,345 |
| 2024-02-14 | Litchfield Caroline (EVP & CFO) | Sale | 38,291 | 125.50 | 4,805,520 |
| 2024-02-14 | Litchfield Caroline (EVP & CFO) | Option Ex | 38,291 | 58.08 | 2,223,941 |
| 2024-02-14 | Davis Robert M (Chairman, CEO & President) | Sale | 85,021 | 125.40 | 10,661,548 |
| 2024-02-14 | Davis Robert M (Chairman, CEO & President) | Option Ex | 85,021 | 73.73 | 6,268,598 |
| 2024-02-13 | Romanelli Joseph (President, Human Health Int?l) | Sale | 1,000 | 124.89 | 124,888 |
| 2024-02-13 | Davis Robert M (Chairman, CEO & President) | Sale | 150,000 | 126.06 | 18,908,700 |
| 2024-02-13 | Davis Robert M (Chairman, CEO & President) | Option Ex | 150,000 | 74.55 | 11,181,750 |
| 2024-02-09 | Li Dean Y (Executive VP & President, MRL) | Sale | 14,702 | 125.50 | 1,845,086 |
| 2024-02-09 | Li Dean Y (Executive VP & President, MRL) | Option Ex | 14,702 | 62.07 | 912,553 |
| 2024-02-07 | Williams David Michael (EVP,Chief Info&Digital Officer) | Sale | 1,451 | 127.57 | 185,108 |
| 2024-02-02 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Sale | 18,959 | 127.17 | 2,411,110 |
| 2024-02-02 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Option Ex | 20,937 | 78.73 | 1,648,370 |
| 2024-02-02 | Zachary Jennifer (EVP, General Counsel) | Sale | 49,499 | 126.97 | 6,284,789 |
| 2024-02-02 | Zachary Jennifer (EVP, General Counsel) | Option Ex | 19,417 | 87.10 | 1,691,220 |
| 2024-02-02 | Mizell Steven (EVP, Chief HR Officer) | Sale | 50,694 | 126.65 | 6,420,344 |
| 2024-02-02 | Mizell Steven (EVP, Chief HR Officer) | Option Ex | 32,994 | 72.22 | 2,382,826 |
| 2023-11-09 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Sale | 2,081 | 102.38 | 213,061 |
| 2023-11-08 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Sale | 43,823 | 105.03 | 4,602,685 |
| 2023-10-30 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Option Ex | 915 | 102.82 | 94,080 |
| 2023-08-14 | Mizell Steven (EVP, Chief HR Officer) | Sale | 4,250 | 109.01 | 463,292 |
| 2023-08-03 | Guindo Chirfi (Chief Marketing Officer) | Option Ex | 36,901 | 105.70 | 3,900,435 |
| 2023-08-03 | Mizell Steven (EVP, Chief HR Officer) | Sale | 4,500 | 105.49 | 474,700 |
| 2023-08-02 | Romanelli Joseph (President, Human Health Int?l) | Sale | 89 | 107.37 | 9,556 |
| 2023-05-04 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Option Ex | 907 | 118.22 | 107,225 |
| 2023-05-04 | Klobuchar Michael A (EVP - Chief Strategy Officer) | Option Ex | 885 | 118.22 | 104,624 |
| 2023-05-04 | Lecointe-cephas Lisa (SVP Chief Ethics & Com Officer) | Option Ex | 813 | 118.22 | 96,112 |
| 2023-05-04 | Zachary Jennifer (EVP, General Counsel) | Sale | 19,141 | 117.59 | 2,250,828 |
| 2023-05-03 | Lecointe-cephas Lisa (SVP Chief Ethics & Com Officer) | Option Ex | 689 | 117.89 | 81,226 |
| 2023-05-03 | Mizell Steven (EVP, Chief HR Officer) | Sale | 53,400 | 119.01 | 6,355,080 |
| 2023-05-03 | Mizell Steven (EVP, Chief HR Officer) | Option Ex | 52,000 | 75.52 | 3,926,936 |
| 2023-05-02 | Williams David Michael (EVP,Chief Info&Digital Officer) | Sale | 7,509 | 116.82 | 877,223 |
| 2023-05-02 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 6,035 | 56.04 | 338,201 |
| 2023-05-01 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Option Ex | 866 | 115.47 | 99,997 |
| 2023-05-01 | Klobuchar Michael A (EVP - Chief Strategy Officer) | Option Ex | 866 | 115.47 | 99,997 |
| 2023-05-01 | Litchfield Caroline (EVP & CFO) | Option Ex | 866 | 115.47 | 99,997 |
| 2023-05-01 | Lecointe-cephas Lisa (SVP Chief Ethics & Com Officer) | Option Ex | 643 | 115.47 | 74,247 |
| 2023-05-01 | Li Dean Y (Executive VP & President, MRL) | Option Ex | 1,062 | 115.47 | 122,629 |
| 2023-05-01 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 577 | 115.47 | 66,626 |
| 2023-05-01 | Karachun Rita A (Sr. VP Fince-Global Controller) | Option Ex | 930 | 115.47 | 107,387 |
| 2023-05-01 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Sale | 75,436 | 116.03 | 8,752,763 |
| 2023-05-01 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Option Ex | 75,436 | 56.04 | 4,227,433 |
| 2023-04-28 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Sale | 66,163 | 115.00 | 7,608,877 |
| 2023-04-28 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Option Ex | 66,163 | 62.07 | 4,106,737 |
| 2023-04-28 | Davis Robert M (Chairman, CEO & President) | Sale | 143,329 | 114.93 | 16,472,801 |
| 2023-04-28 | Davis Robert M (Chairman, CEO & President) | Option Ex | 143,329 | 56.04 | 8,032,157 |
| 2023-04-26 | Romanelli Joseph (President, Human Health Int?l) | Buy | 3 | 113.68 | 341 |
| 2023-04-13 | Chattopadhyay Sanat (Exe V-P & Pres. MMD) | Sale | 134,055 | 115.06 | 15,425,038 |
| 2023-04-13 | Chattopadhyay Sanat (Exe V-P & Pres. MMD) | Option Ex | 134,055 | 59.05 | 7,916,618 |
| 2023-03-24 | Romanelli Joseph (President, Human Health Int?l) | Sale | 35 | 104.65 | 3,662 |
| 2023-03-20 | Romanelli Joseph (President, Human Health Int?l) | Buy | 136 | 105.47 | 14,343 |
| 2023-02-21 | Romanelli Joseph (President, Human Health Int?l) | Buy | 11 | 109.20 | 1,201 |
| 2023-02-15 | Romanelli Joseph (President, Human Health Int?l) | Sale | 5,000 | 108.22 | 541,100 |
| 2023-02-13 | Mizell Steven (EVP, Chief HR Officer) | Sale | 1,815 | 109.10 | 198,016 |
| 2023-02-10 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 1,205 | 106.72 | 128,597 |
| 2023-02-09 | Mizell Steven (EVP, Chief HR Officer) | Sale | 5,000 | 107.00 | 535,005 |
| 2023-02-06 | Mizell Steven (EVP, Chief HR Officer) | Sale | 4,436 | 104.25 | 462,475 |
| 2023-02-03 | Zachary Jennifer (EVP, General Counsel) | Sale | 75,436 | 103.17 | 7,782,732 |
| 2023-02-03 | Zachary Jennifer (EVP, General Counsel) | Option Ex | 75,436 | 56.04 | 4,227,433 |
| 2022-12-19 | Romanelli Joseph (President, Human Health Int?l) | Buy | 7 | 109.04 | 763 |
| 2022-12-13 | Romanelli Joseph (President, Human Health Int?l) | Buy | 56 | 110.96 | 6,213 |
| 2022-12-06 | Romanelli Joseph (President, Human Health Int?l) | Buy | 30 | 109.39 | 3,281 |
| 2022-12-05 | Romanelli Joseph (President, Human Health Int?l) | Buy | 107 | 109.54 | 11,720 |
| 2022-12-02 | Romanelli Joseph (President, Human Health Int?l) | Buy | 59 | 109.67 | 6,470 |
| 2022-11-09 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Sale | 1,795 | 103.21 | 185,261 |
| 2022-11-09 | Davis Robert M (CEO & President) | Sale | 167,613 | 102.84 | 17,236,818 |
| 2022-11-09 | Davis Robert M (CEO & President) | Option Ex | 167,613 | .00 | 0 |
| 2022-11-07 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Sale | 45,561 | 99.47 | 4,531,998 |
| 2022-11-07 | Oosthuizen Johannes Jacobus (President, U.S. Market) | Option Ex | 52,743 | .00 | 0 |
| 2022-11-04 | Frazier Kenneth C (Executive Chair) | Sale | 235,000 | 98.81 | 23,219,645 |
| 2022-11-04 | Frazier Kenneth C (Executive Chair) | Option Ex | 235,000 | .00 | 0 |
| 2022-11-03 | Frazier Kenneth C (Executive Chair) | Sale | 235,000 | 98.89 | 23,238,210 |
| 2022-11-03 | Frazier Kenneth C (Executive Chair) | Option Ex | 235,000 | .00 | 0 |
| 2022-05-04 | Oosthuizen Johannes Jacobus (SVP, U.S. Market) | Option Ex | 907 | 87.10 | 78,999 |
| 2022-05-04 | Klobuchar Michael A (EVP - Chief Strategy Officer) | Option Ex | 885 | 87.10 | 77,083 |
| 2022-05-04 | Lecointe-cephas Lisa (SVP Chief Ethics & Com Officer) | Option Ex | 813 | 87.10 | 70,812 |
| 2022-05-04 | Karachun Rita A (Sr. VP Fince-Global Controller) | Option Ex | 949 | 87.10 | 82,657 |
| 2022-05-03 | Garay Arpa (SVP Human Health Global Mktg.) | Option Ex | 1,546 | 87.65 | 135,506 |
| 2022-05-03 | Oosthuizen Johannes Jacobus (SVP, U.S. Market) | Option Ex | 773 | 87.65 | 67,753 |
| 2022-05-03 | Klobuchar Michael A (EVP - Chief Strategy Officer) | Option Ex | 773 | 87.65 | 67,753 |
| 2022-05-03 | Litchfield Caroline (EVP & CFO) | Option Ex | 773 | 87.65 | 67,753 |
| 2022-05-03 | Lecointe-cephas Lisa (SVP Chief Ethics & Com Officer) | Option Ex | 452 | 87.65 | 39,617 |
| 2022-05-03 | Li Dean Y (Executive VP & President, MRL) | Option Ex | 773 | 87.65 | 67,753 |
| 2022-05-03 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 427 | 87.65 | 37,426 |
| 2022-05-03 | Karachun Rita A (Sr. VP Fince-Global Controller) | Option Ex | 902 | 87.65 | 79,060 |
| 2022-05-01 | Garay Arpa (SVP Human Health Global Mktg.) | Option Ex | 866 | 88.69 | 76,805 |
| 2022-05-01 | Oosthuizen Johannes Jacobus (SVP, U.S. Market) | Option Ex | 866 | 88.69 | 76,805 |
| 2022-05-01 | Klobuchar Michael A (EVP - Chief Strategy Officer) | Option Ex | 866 | 88.69 | 76,805 |
| 2022-05-01 | Litchfield Caroline (EVP & CFO) | Option Ex | 866 | 88.69 | 76,805 |
| 2022-05-01 | Lecointe-cephas Lisa (SVP Chief Ethics & Com Officer) | Option Ex | 640 | 88.69 | 56,761 |
| 2022-05-01 | Li Dean Y (Executive VP & President, MRL) | Option Ex | 1,061 | 88.69 | 94,100 |
| 2022-05-01 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 577 | 88.69 | 51,174 |
| 2022-05-01 | Karachun Rita A (Sr. VP Fince-Global Controller) | Option Ex | 928 | 88.69 | 82,304 |
| 2022-02-10 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 1,202 | 76.53 | 91,989 |
| 2021-11-09 | Frazier Kenneth C (Executive Chair) | Sale | 663,881 | 82.72 | 54,918,227 |
| 2021-11-09 | Frazier Kenneth C (Executive Chair) | Option Ex | 663,881 | .00 | 0 |
| 2021-11-04 | Litchfield Caroline (EVP & CFO) | Sale | 18,335 | 91.00 | 1,668,503 |
| 2021-11-04 | Litchfield Caroline (EVP & CFO) | Option Ex | 22,683 | .00 | 0 |
| 2021-11-04 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Sale | 29,782 | 90.40 | 2,692,292 |
| 2021-11-04 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Option Ex | 29,782 | .00 | 0 |
| 2021-11-03 | Karachun Rita A (Sr. VP Fince-Global Controller) | Sale | 25,000 | 88.45 | 2,211,225 |
| 2021-11-03 | Karachun Rita A (Sr. VP Fince-Global Controller) | Option Ex | 25,000 | .00 | 0 |
| 2021-11-01 | Clyburn Frank (EVP & Pres ? Human Health) | Sale | 39,762 | 87.87 | 3,493,886 |
| 2021-11-01 | Clyburn Frank (EVP & Pres ? Human Health) | Option Ex | 39,762 | .00 | 0 |
| 2021-11-01 | Gerberding Julie L. (EVP, Chief Patient Officer) | Sale | 96,270 | 87.91 | 8,462,710 |
| 2021-11-01 | Gerberding Julie L. (EVP, Chief Patient Officer) | Option Ex | 96,270 | .00 | 0 |
| 2021-10-30 | Clyburn Frank (EVP & Pres ? Human Health) | Option Ex | 2,358 | 88.05 | 207,621 |
| 2021-10-30 | Mizell Steven (EVP, Chief HR Officer) | Option Ex | 4,715 | 88.05 | 415,155 |
| 2021-10-29 | Chattopadhyay Sanat (Exe V-P & Pres. MMD) | Sale | 24,619 | 87.32 | 2,149,731 |
| 2021-10-29 | Chattopadhyay Sanat (Exe V-P & Pres. MMD) | Option Ex | 24,619 | .00 | 0 |
| 2021-10-29 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Sale | 135,405 | 87.56 | 11,856,332 |
| 2021-10-29 | Deluca Richard R. (EVP&Pres, Merck Animal Heallth) | Option Ex | 135,405 | .00 | 0 |
| 2021-05-04 | Litchfield Caroline (EVP & CFO) | Option Ex | 1,039 | 75.98 | 78,943 |
| 2021-05-04 | Lecointe-cephas Lisa (SVP Chief Ethics & Com Officer) | Option Ex | 694 | 75.98 | 52,730 |
| 2021-05-04 | Li Dean Y (Executive VP & President, MRL) | Option Ex | 694 | 75.98 | 52,730 |
| 2021-05-04 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 417 | 75.98 | 31,683 |
| 2021-05-04 | Clyburn Frank (EVP, Chief Commercial Officer) | Option Ex | 1,906 | 75.98 | 144,817 |
| 2021-05-04 | Zachary Jennifer (EVP, General Counsel) | Option Ex | 5,772 | 75.98 | 438,556 |
| 2021-05-03 | Lecointe-cephas Lisa (SVP Chief Ethics & Com Officer) | Option Ex | 437 | 74.50 | 32,556 |
| 2021-05-03 | Li Dean Y (Executive VP & President, MRL) | Option Ex | 750 | 74.50 | 55,875 |
| 2021-05-03 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 412 | 74.50 | 30,694 |
| 2021-05-03 | Karachun Rita A (Sr. VP Fince-Global Controller) | Option Ex | 875 | 74.50 | 65,187 |
| 2021-05-01 | Lecointe-cephas Lisa (SVP Chief Ethics & Com Officer) | Option Ex | 622 | 74.50 | 46,339 |
| 2021-05-01 | Li Dean Y (Executive VP & President, MRL) | Option Ex | 1,030 | 74.50 | 76,735 |
| 2021-05-01 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 560 | 74.50 | 41,720 |
| 2021-05-01 | Karachun Rita A (Sr. VP Fince-Global Controller) | Option Ex | 901 | 74.50 | 67,124 |
| 2021-02-10 | Williams David Michael (EVP,Chief Info&Digital Officer) | Option Ex | 1,167 | 75.04 | 87,571 |
| 2020-11-09 | Frazier Kenneth C (Chairman, President & CEO) | Sale | 280,000 | 81.41 | 22,793,680 |
| 2020-10-30 | Clyburn Frank (EVP, Chief Commercial Officer) | Option Ex | 2,287 | 75.89 | 173,560 |
Insider trading activities including stock purchases, stock sales, and option exercises
of MRK listed in the above tables cannot be completely guaranteed as to their accuracy.
For more insider trading information of Merck & Co., Inc. (symbol MRK,
CIK number 310158) see
the Securities and Exchange Commission (SEC) website.