Kenneth C. Frazier serves as Executive at MERCK & CO INC, where they oversee executive responsibilities. Since joining the company, Kenneth C. Frazier has executed 178 insider transactions totaling $463.2M, demonstrating a bearish approach to their equity position. Their most recent transaction on Feb 4, 2026 involved purchasing 111,111 shares valued at $2.0M.
Kenneth C. Frazier currently holds 111,111 shares of MERCK & CO INC ((MRK)), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Kenneth C. Frazier has been a net seller of (MRK) stock. They have purchased $3.0M and sold $460.2M worth of shares.
Kenneth C. Frazier's most recent insider trade was on Feb 4, 2026, when they purchased 111,111 shares at $18.00 per share.
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| $N/A |
| Discretionary |
| Nov 7, 2022 | MRK | $12.5M | Sale | 126,134 | $99.42 | Discretionary |
| Nov 7, 2022 | MRK | $8.5M | Sale | 84,721 | $100.07 | Discretionary |
| Nov 7, 2022 | MRK | $2.5M | Sale | 24,914 | $98.45 | Discretionary |
| Nov 4, 2022 | MRK | $0 | Option Exercise | 235,000 | $N/A | Discretionary |
| Nov 4, 2022 | MRK | $19.7M | Sale | 200,190 | $98.53 | Discretionary |
| Nov 4, 2022 | MRK | $3.4M | Sale | 34,810 | $99.08 | Discretionary |
| Nov 3, 2022 | MRK | $0 | Option Exercise | 235,000 | $N/A | Discretionary |
| Nov 3, 2022 | MRK | $21.2M | Sale | 214,617 | $98.68 | Discretionary |
| Nov 3, 2022 | MRK | $2.0M | Sale | 20,383 | $99.09 | Discretionary |
| Nov 2, 2022 | MRK | $0 | Option Exercise | 165,828 | $N/A | Discretionary |
| Nov 2, 2022 | MRK | $0 | Option Exercise | 134,172 | $N/A | Discretionary |
| Nov 2, 2022 | MRK | $9.5M | Sale | 94,339 | $100.40 | Discretionary |
| Nov 2, 2022 | MRK | $20.5M | Sale | 205,661 | $99.68 | Discretionary |
| Nov 1, 2022 | MRK | $9.7M | Sale | 96,981 | $100.22 | Discretionary |
| Nov 1, 2022 | MRK | $0 | Gift | 1,470 | $N/A | Discretionary |
| Nov 1, 2022 | MRK | $0 | Gift | 2,450 | $N/A | Discretionary |
| Nov 1, 2022 | MRK | $0 | Gift | 1,710 | $N/A | Discretionary |
| Nov 1, 2022 | MRK | $70.7K | Sale | 700 | $101.05 | Discretionary |
| Nov 1, 2022 | MRK | $20.2M | Sale | 202,319 | $99.61 | Discretionary |
| Nov 1, 2022 | MRK | $0 | Option Exercise | 300,000 | $N/A | Discretionary |
| Oct 31, 2022 | MRK | $7.1M | Sale | 70,698 | $99.82 | Discretionary |
| Oct 31, 2022 | MRK | $0 | Option Exercise | 300,000 | $N/A | Discretionary |
| Oct 31, 2022 | MRK | $23.2M | Sale | 229,302 | $101.03 | Discretionary |
| Oct 28, 2022 | MRK | $0 | Option Exercise | 567,084 | $N/A | Discretionary |
| Oct 28, 2022 | MRK | $7.5M | Sale | 75,489 | $99.15 | Discretionary |
| Oct 28, 2022 | MRK | $31.4M | Sale | 313,232 | $100.25 | Discretionary |
| Oct 28, 2022 | MRK | $18.0M | Sale | 178,363 | $100.80 | Discretionary |
| Feb 24, 2022 | MRK | $8.8M | Award | 119,488 | $73.51 | Discretionary |