Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-05-29 Option Award | 2026-06-02 4:14 pm | N/A N/A | Merck & Co. Inc. | MRK | Warden Kathy J Director | 1,853 | $118.72 | 18,390 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 3:31 pm | N/A N/A | Merck & Co. Inc. | MRK | Karsanbhai Surendralal Lanca Director | 1,853 | $118.72 | 5,393 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 2:26 pm | N/A N/A | Merck & Co. Inc. | MRK | Coe Mary Ellen Director | 1,853 | $118.72 | 31,776 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 2:21 pm | N/A N/A | Merck & Co. Inc. | MRK | THULIN INGE G Director | 1,853 | $118.72 | 30,403 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 2:19 pm | N/A N/A | Merck & Co. Inc. | MRK | Seidman Christine E Director | 1,853 | $118.72 | 21,328 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 2:17 pm | N/A N/A | Merck & Co. Inc. | MRK | RUSSO PATRICIA F Director | 1,853 | $118.72 | 75,539 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 2:14 pm | N/A N/A | Merck & Co. Inc. | MRK | Rothman Paul Director | 1,853 | $118.72 | 35,045 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 2:11 pm | N/A N/A | Merck & Co. Inc. | MRK | Mayo Stephen Director | 1,853 | $118.72 | 14,925 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 2:09 pm | N/A N/A | Merck & Co. Inc. | MRK | LAVIZZO-MOUREY RISA J Director | 1,853 | $118.72 | 18,749 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 2:05 pm | N/A N/A | Merck & Co. Inc. | MRK | GLOCER THOMAS H Director | 1,853 | $118.72 | 116,012 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 2:03 pm | N/A N/A | Merck & Co. Inc. | MRK | Craig Pamela J. Director | 1,853 | $118.72 | 36,660 (Direct) | View |
| 2026-05-29 Option Award | 2026-06-02 1:57 pm | N/A N/A | Merck & Co. Inc. | MRK | BAKER DOUGLAS M JR Director | 1,853 | $118.72 | 27,518 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 12:18 pm | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Zachary Jennifer EVP, General Counsel | 47,376 | $0 | 118,273 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 12:14 pm | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Williams David Michael EVP,Chief Info&Digital Officer | 18,222 | $0 | 49,938 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 12:10 pm | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Litchfield Caroline EVP & CFO | 62,474 | $0 | 154,775 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 12:07 pm | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Li Dean Y Executive VP & President, MRL | 78,092 | $0 | 172,523 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 12:03 pm | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 31,237 | $0 | 45,011 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 11:56 am | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | DeLuca Richard R. EVP&Pres, Merck Animal Heallth | 46,855 | $0 | 209,713 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 11:52 am | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Davis Robert M Chairman, CEO & President | 187,421 | $0 | 637,772 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 11:48 am | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Foard Brian EVP, Specialty, Pharma, & ID | 77,000 | $0 | 77,000 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 11:45 am | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Maraldo David R. EVP & Pres. MMD | 29,155 | $0 | 55,727 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 11:42 am | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Oosthuizen Johannes Jacobus EVP, Oncology & Int?l | 41,649 | $0 | 63,544 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 11:39 am | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 7,343 | $0 | 16,731 (Direct) | View |
| 2026-05-05 Option Award | 2026-05-07 11:36 am | 2027-05-05 2029-05-05 | Merck & Co. Inc. | MRK | Guindo Chirfi EVP, Access, Policy & Comms | 26,030 | $0 | 87,700 (Direct) | View |
| 2026-05-02 Tax Withholding | 2026-05-05 1:51 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 132 | $112.16 | 9,388 (Direct) | View |
| 2026-05-02 Exercise | 2026-05-05 1:51 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 383 | $112.16 | 9,388 (Direct) | View |
| 2026-05-02 Exercise | 2026-05-05 1:51 pm | 2024-05-02 2026-05-02 | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 383 | $0 | 9,388 (Direct) | View |
| 2026-05-02 Tax Withholding | 2026-05-05 1:47 pm | N/A N/A | Merck & Co. Inc. | MRK | Maraldo David R. EVP & Pres. MMD | 159 | $112.16 | 18,212 (Direct) | View |
| 2026-05-02 Exercise | 2026-05-05 1:47 pm | N/A N/A | Merck & Co. Inc. | MRK | Maraldo David R. EVP & Pres. MMD | 552 | $112.16 | 18,212 (Direct) | View |
| 2026-05-02 Exercise | 2026-05-05 1:47 pm | 2024-05-02 2026-05-02 | Merck & Co. Inc. | MRK | Maraldo David R. EVP & Pres. MMD | 552 | $0 | 18,212 (Direct) | View |
Ownership(A) | 2026-05-05 1:08 pm | N/A N/A | Merck & Co. Inc. | MRK | Maraldo David R. EVP & Pres. MMD | 0 | $0 | 74,686 (Direct) | View |
Ownership | 2026-05-04 6:28 pm | N/A N/A | Merck & Co. Inc. | MRK | Maraldo David R. EVP & Pres. MMD | 0 | $0 | 74,686 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 6:54 pm | N/A N/A | Merck & Co. Inc. | MRK | Guindo Chirfi EVP, Access, Policy & Comms | 1,967 | $110.03 | 65,605 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 6:54 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Guindo Chirfi EVP, Access, Policy & Comms | 1,967 | $0 | 65,605 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 6:54 pm | N/A N/A | Merck & Co. Inc. | MRK | Guindo Chirfi EVP, Access, Policy & Comms | 969 | $110.03 | 65,605 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 6:32 pm | N/A N/A | Merck & Co. Inc. | MRK | Chattopadhyay Sanat Exe V-P & Pres. MMD | 2,597 | $110.03 | 205,869 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 6:32 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Chattopadhyay Sanat Exe V-P & Pres. MMD | 2,597 | $0 | 205,869 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 6:32 pm | N/A N/A | Merck & Co. Inc. | MRK | Chattopadhyay Sanat Exe V-P & Pres. MMD | 1,130 | $110.03 | 205,869 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 6:20 pm | N/A N/A | Merck & Co. Inc. | MRK | DeLuca Richard R. EVP&Pres, Merck Animal Heallth | 2,518 | $110.03 | 167,895 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 6:20 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | DeLuca Richard R. EVP&Pres, Merck Animal Heallth | 2,518 | $0 | 167,895 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 6:20 pm | N/A N/A | Merck & Co. Inc. | MRK | DeLuca Richard R. EVP&Pres, Merck Animal Heallth | 1,241 | $110.03 | 167,895 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:56 pm | N/A N/A | Merck & Co. Inc. | MRK | Williams David Michael EVP,Chief Info&Digital Officer | 1,377 | $110.03 | 34,471 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:56 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Williams David Michael EVP,Chief Info&Digital Officer | 1,377 | $0 | 34,471 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 5:56 pm | N/A N/A | Merck & Co. Inc. | MRK | Williams David Michael EVP,Chief Info&Digital Officer | 679 | $110.03 | 34,471 (Direct) | View |
| 2026-04-30 Tax Withholding | 2026-05-01 5:55 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 159 | $110.95 | 11,491 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:55 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 944 | $110.03 | 11,491 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:55 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 1,408 | $0 | 11,491 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 5:55 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 324 | $110.03 | 11,491 (Direct) | View |
| 2026-04-30 Exercise | 2026-05-01 5:55 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 464 | $110.95 | 11,491 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:45 pm | N/A N/A | Merck & Co. Inc. | MRK | Li Dean Y Executive VP & President, MRL | 4,722 | $110.03 | 103,875 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:45 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Li Dean Y Executive VP & President, MRL | 4,722 | $0 | 103,875 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 5:45 pm | N/A N/A | Merck & Co. Inc. | MRK | Li Dean Y Executive VP & President, MRL | 2,326 | $110.03 | 103,875 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:43 pm | N/A N/A | Merck & Co. Inc. | MRK | Zachary Jennifer EVP, General Counsel | 2,951 | $110.03 | 76,800 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:43 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Zachary Jennifer EVP, General Counsel | 2,951 | $0 | 76,800 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 5:43 pm | N/A N/A | Merck & Co. Inc. | MRK | Zachary Jennifer EVP, General Counsel | 1,454 | $110.03 | 76,800 (Direct) | View |
| 2026-04-30 Tax Withholding | 2026-05-01 5:42 pm | N/A N/A | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 5,143 | $110.95 | 29,296 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:42 pm | N/A N/A | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 2,085 | $110.03 | 29,296 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:42 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 13,435 | $0 | 29,296 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 5:42 pm | N/A N/A | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 715 | $110.03 | 29,296 (Direct) | View |
| 2026-04-30 Exercise | 2026-05-01 5:42 pm | N/A N/A | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 11,350 | $110.95 | 29,296 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:39 pm | N/A N/A | Merck & Co. Inc. | MRK | Litchfield Caroline EVP & CFO | 3,935 | $110.03 | 100,171 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:39 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Litchfield Caroline EVP & CFO | 3,935 | $0 | 100,171 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 5:39 pm | N/A N/A | Merck & Co. Inc. | MRK | Litchfield Caroline EVP & CFO | 1,938 | $110.03 | 100,171 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:38 pm | N/A N/A | Merck & Co. Inc. | MRK | Davis Robert M Chairman, CEO & President | 13,300 | $110.03 | 476,952 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:38 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Davis Robert M Chairman, CEO & President | 13,300 | $0 | 476,952 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 5:38 pm | N/A N/A | Merck & Co. Inc. | MRK | Davis Robert M Chairman, CEO & President | 6,551 | $110.03 | 476,952 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:34 pm | N/A N/A | Merck & Co. Inc. | MRK | Oosthuizen Johannes Jacobus EVP, Oncology & Int?l | 1,377 | $110.03 | 24,650 (Direct) | View |
| 2026-04-29 Exercise | 2026-05-01 5:34 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Oosthuizen Johannes Jacobus EVP, Oncology & Int?l | 1,377 | $0 | 24,650 (Direct) | View |
| 2026-04-29 Tax Withholding | 2026-05-01 5:34 pm | N/A N/A | Merck & Co. Inc. | MRK | Oosthuizen Johannes Jacobus EVP, Oncology & Int?l | 679 | $110.03 | 24,650 (Direct) | View |
| 2026-03-31 Option Award | 2026-04-01 1:47 pm | N/A N/A | Merck & Co. Inc. | MRK | Seidman Christine E Director | 68 | $120.29 | 19,338 (Direct) | View |