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>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2025-04-25 Sale | 2025-04-29 4:04 pm | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 4,262 | $82.76 | $352,723 | 7,778 (Direct) | View |
| 2025-02-19 Sale | 2025-02-20 4:01 pm | Merck & Co. Inc. | MRK | Oosthuizen Johannes Jacobus President, U.S. Market | 8,500 | $84.09 | $714,745 | 30,705 (Direct) | View |
| 2025-02-13 Sale | 2025-02-13 4:01 pm | Merck & Co. Inc. | MRK | Williams David Michael EVP,Chief Info&Digital Officer | 6,000 | $85.34 | $512,057 | 24,123 (Direct) | View |
| 2025-02-06 Purchase | 2025-02-07 4:09 pm | Merck & Co. Inc. | MRK | THULIN INGE G Director | 2,833 | $88.25 | $250,000 | 2,933 (Direct) | View |
| 2025-02-06 Sale | 2025-02-07 4:07 pm | Merck & Co. Inc. | MRK | Downing Cristal N Chief Comm. & Public Afrs Ofcr | 2,361 | $88.76 | $209,551 | 7,085 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2025-05-30 Option Award | 2025-06-03 1:45 pm | N/A N/A | Merck & Co. Inc. | MRK | Warden Kathy J Director | 2,863 | $76.84 | 16,004 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 1:25 pm | N/A N/A | Merck & Co. Inc. | MRK | THULIN INGE G Director | 2,863 | $76.84 | 27,697 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 1:22 pm | N/A N/A | Merck & Co. Inc. | MRK | Seidman Christine E Director | 2,863 | $76.84 | 18,493 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 1:21 pm | N/A N/A | Merck & Co. Inc. | MRK | RUSSO PATRICIA F Director | 2,863 | $76.84 | 71,671 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 1:18 pm | N/A N/A | Merck & Co. Inc. | MRK | Rothman Paul Director | 2,863 | $76.84 | 32,091 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 1:14 pm | N/A N/A | Merck & Co. Inc. | MRK | Mayo Stephen Director | 2,863 | $76.84 | 12,640 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 1:05 pm | N/A N/A | Merck & Co. Inc. | MRK | LAVIZZO-MOUREY RISA J Director | 2,863 | $76.84 | 16,367 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 12:58 pm | N/A N/A | Merck & Co. Inc. | MRK | Karsanbhai Surendralal Lanca Director | 2,863 | $76.84 | 3,422 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 12:55 pm | N/A N/A | Merck & Co. Inc. | MRK | GLOCER THOMAS H Director | 2,863 | $76.84 | 108,525 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 12:53 pm | N/A N/A | Merck & Co. Inc. | MRK | Craig Pamela J. Director | 2,863 | $76.84 | 33,706 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 12:51 pm | N/A N/A | Merck & Co. Inc. | MRK | Coe Mary Ellen Director | 2,863 | $76.84 | 27,683 (Direct) | View |
| 2025-05-30 Option Award | 2025-06-03 12:49 pm | N/A N/A | Merck & Co. Inc. | MRK | BAKER DOUGLAS M JR Director | 2,863 | $76.84 | 25,344 (Direct) | View |
| 2025-05-03 Exercise | 2025-05-05 4:23 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 2,050 | $83.18 | 9,539 (Direct) | View |
| 2025-05-03 Exercise | 2025-05-05 4:23 pm | 2024-05-03 2025-05-03 | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 2,050 | $0 | 9,539 (Direct) | View |
| 2025-05-03 Tax Withholding | 2025-05-05 4:23 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 844 | $83.18 | 9,539 (Direct) | View |
| 2025-05-02 Exercise | 2025-05-02 4:18 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 381 | $83.26 | 9,645 (Direct) | View |
| 2025-05-02 Tax Withholding | 2025-05-02 4:18 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 131 | $83.26 | 9,645 (Direct) | View |
| 2025-04-30 Exercise | 2025-05-02 4:18 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 464 | $84.71 | 9,645 (Direct) | View |
| 2025-04-30 Tax Withholding | 2025-05-02 4:18 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 159 | $84.71 | 9,645 (Direct) | View |
| 2025-04-30 Exercise | 2025-05-02 4:18 pm | 2025-04-30 2027-04-30 | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 845 | $0 | 9,645 (Direct) | View |
| 2025-05-02 Exercise | 2025-05-02 4:14 pm | N/A N/A | Merck & Co. Inc. | MRK | Romanelli Joseph President, Human Health Int?l | 2,262 | $83.26 | 29,336 (Direct) | View |
| 2025-05-02 Tax Withholding | 2025-05-02 4:14 pm | N/A N/A | Merck & Co. Inc. | MRK | Romanelli Joseph President, Human Health Int?l | 1,115 | $83.26 | 29,336 (Direct) | View |
| 2025-04-30 Exercise | 2025-05-02 4:14 pm | N/A N/A | Merck & Co. Inc. | MRK | Romanelli Joseph President, Human Health Int?l | 2,063 | $84.71 | 29,336 (Direct) | View |
| 2025-04-30 Tax Withholding | 2025-05-02 4:14 pm | N/A N/A | Merck & Co. Inc. | MRK | Romanelli Joseph President, Human Health Int?l | 1,017 | $84.71 | 29,336 (Direct) | View |
| 2025-04-30 Exercise | 2025-05-02 4:14 pm | 2025-04-30 2027-04-30 | Merck & Co. Inc. | MRK | Romanelli Joseph President, Human Health Int?l | 4,325 | $0 | 29,336 (Direct) | View |
| 2025-04-30 Exercise | 2025-05-02 4:12 pm | N/A N/A | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 11,350 | $84.71 | 28,897 (Direct) | View |
| 2025-04-30 Tax Withholding | 2025-05-02 4:12 pm | N/A N/A | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 5,153 | $84.71 | 28,897 (Direct) | View |
| 2025-04-30 Exercise | 2025-05-02 4:12 pm | 2025-04-30 2027-04-30 | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 11,350 | $0 | 28,897 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:19 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 9,281 | $0 | 17,059 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:15 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Litchfield Caroline EVP & CFO | 65,540 | $0 | 139,880 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:13 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Williams David Michael EVP,Chief Info&Digital Officer | 22,939 | $0 | 47,164 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:12 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Chattopadhyay Sanat Exe V-P & Pres. MMD | 43,256 | $0 | 228,584 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:10 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | DeLuca Richard R. EVP&Pres, Merck Animal Heallth | 41,945 | $0 | 223,956 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:07 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Davis Robert M Chairman, CEO & President | 221,524 | $0 | 665,126 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:06 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Oosthuizen Johannes Jacobus President, U.S. Market | 22,939 | $0 | 53,769 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:04 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Li Dean Y Executive VP & President, MRL | 78,647 | $0 | 158,828 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:03 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Zachary Jennifer EVP, General Counsel | 49,155 | $0 | 104,986 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 6:00 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Downing Cristal N Chief Comm. & Public Afrs Ofcr | 17,040 | $0 | 24,125 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 5:58 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Larson Betty D EVP, Chief HR Officer | 34,736 | $0 | 40,933 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 5:45 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Guindo Chirfi Chief Marketing Officer | 32,769 | $0 | 102,651 (Direct) | View |
| 2025-04-29 Option Award | 2025-05-01 5:43 pm | 2026-04-29 2028-04-29 | Merck & Co. Inc. | MRK | Romanelli Joseph President, Human Health Int?l | 35,660 | $0 | 57,459 (Direct) | View |
| 2025-04-25 Exercise | 2025-04-29 4:04 pm | N/A N/A | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 5,000 | $58.08 | 7,778 (Direct) | View |
| 2025-04-25 Exercise | 2025-04-29 4:04 pm | 2016-05-01 2025-04-30 | Merck & Co. Inc. | MRK | Smart Dalton E. III SVP Fin. - Global Controller | 5,000 | $0 | 7,778 (Direct) | View |
| 2025-03-31 Option Award | 2025-04-02 09:57 am | N/A N/A | Merck & Co. Inc. | MRK | Seidman Christine E Director | 91 | $89.76 | 15,478 (Direct) | View |
| 2025-03-31 Option Award | 2025-04-02 09:53 am | N/A N/A | Merck & Co. Inc. | MRK | GLOCER THOMAS H Director | 543 | $89.76 | 104,679 (Direct) | View |
| 2025-03-31 Option Award | 2025-04-02 09:50 am | N/A N/A | Merck & Co. Inc. | MRK | Coe Mary Ellen Director | 334 | $89.76 | 24,578 (Direct) | View |
| 2025-02-08 Tax Withholding | 2025-02-11 2:59 pm | N/A N/A | Merck & Co. Inc. | MRK | Oosthuizen Johannes Jacobus President, U.S. Market | 6,404 | $87.28 | 39,205 (Direct) | View |
| 2025-02-08 Exercise | 2025-02-11 2:59 pm | 2025-02-08 2025-02-08 | Merck & Co. Inc. | MRK | Oosthuizen Johannes Jacobus President, U.S. Market | 13,002 | $0 | 39,205 (Direct) | View |
| 2025-02-08 Exercise | 2025-02-11 2:59 pm | N/A N/A | Merck & Co. Inc. | MRK | Oosthuizen Johannes Jacobus President, U.S. Market | 13,002 | $87.28 | 39,205 (Direct) | View |