David Michael Williams serves as Executive at Merck & Co., Inc., where they oversee executive responsibilities. Since joining the company, David Michael Williams has executed 29 insider transactions totaling $1.8M, demonstrating a bearish approach to their equity position. Their most recent transaction on Jan 26, 2026 involved receiving (via award) 6,112 shares valued at $656.4K.
David Michael Williams currently holds 30,837.74 shares of Merck & Co., Inc. (MRK), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, David Michael Williams has been a net seller of MRK stock. They have purchased $0 and sold $1.8M worth of shares.
David Michael Williams's most recent insider trade was on Jan 26, 2026, when they sold 6,112 shares at $107.40 per share.
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| $83.59 |
| Discretionary |
| Aug 4, 2025 | MRK | $668.6K | Payment | 8,432 | $79.29 | Discretionary |
| Aug 4, 2025 | MRK | $1.4M | Option Exercise | 17,119 | $79.29 | Discretionary |
| Feb 7, 2024 | MRK | $185.1K | Sale | 1,451 | $127.57 | Discretionary |
| Jan 22, 2024 | MRK | $1.2M | Award | 10,196 | $119.43 | Discretionary |
| May 2, 2023 | MRK | $338.2K | Option Exercise | 6,035 | $56.04 | Discretionary |
| May 2, 2023 | MRK | $877.2K | Sale | 7,509 | $116.82 | Discretionary |
| May 1, 2023 | MRK | $66.6K | Option Exercise | 577 | $115.47 | Discretionary |
| May 1, 2023 | MRK | $22.9K | Payment | 198 | $115.47 | Discretionary |
| Feb 10, 2023 | MRK | $44.1K | Payment | 413 | $106.72 | Discretionary |
| Feb 10, 2023 | MRK | $128.6K | Option Exercise | 1,205 | $106.72 | Discretionary |
| Jan 23, 2023 | MRK | $191.7K | Award | 1,745 | $109.88 | Discretionary |
| May 3, 2022 | MRK | $37.4K | Option Exercise | 427 | $87.65 | Discretionary |
| May 3, 2022 | MRK | $12.9K | Payment | 147 | $87.65 | Discretionary |
| May 1, 2022 | MRK | $17.6K | Payment | 198 | $88.69 | Discretionary |
| May 1, 2022 | MRK | $51.2K | Option Exercise | 577 | $88.69 | Discretionary |
| Feb 24, 2022 | MRK | $122.0K | Award | 1,660 | $73.51 | Discretionary |
| Feb 10, 2022 | MRK | $92.0K | Option Exercise | 1,202 | $76.53 | Discretionary |
| Feb 10, 2022 | MRK | $36.5K | Payment | 477 | $76.53 | Discretionary |
| May 4, 2021 | MRK | $10.9K | Payment | 143 | $75.98 | Discretionary |
| May 4, 2021 | MRK | $31.7K | Option Exercise | 417 | $75.98 | Discretionary |
| May 3, 2021 | MRK | $10.6K | Payment | 142 | $74.50 | Discretionary |
| May 3, 2021 | MRK | $30.7K | Option Exercise | 412 | $74.50 | Discretionary |
| May 1, 2021 | MRK | $41.7K | Option Exercise | 560 | $74.50 | Discretionary |
| May 1, 2021 | MRK | $14.3K | Payment | 192 | $74.50 | Discretionary |
| Feb 26, 2021 | MRK | $151.8K | Award | 2,090 | $72.62 | Discretionary |
| Feb 10, 2021 | MRK | $35.0K | Payment | 467 | $75.04 | Discretionary |
| Feb 10, 2021 | MRK | $87.6K | Option Exercise | 1,167 | $75.04 | Discretionary |