MRK insider trading
Merck & Co., Inc. · end-of-day data as of Oct 16, 2026
Merck & Co., Inc.
$145.95+12.0%
Buy · 27 analystsPT $157.17 +7.7%
In the last 12 months MRK insiders made 0 open-market purchases and 23 sales worth $57.76M, as reported on SEC Form 4. The latest: Guindo Chirfi (officer: EVP, Access, Policy & Comms) sold 10,000 shares at $135.00 on Aug 13, 2026.
Last 90 days
- Insiders-$25.58M
Transactions
Open-market buys $0 · sells $57.76M over the last 365 days (0 buys, 23 sells).
| Sep 30, 2026 | Coe Mary Ellen | Other | 206 | — | — |
| Sep 30, 2026 | Karsanbhai Surendralal Lanca | Other | 112 | — | — |
| Sep 30, 2026 | Seidman Christine E | Other | 56 | — | — |
| Sep 1, 2026 | Gupta Gaurav K | Other | 0 | — | — |
| Aug 13, 2026 | Guindo Chirfi | Sell | 10,000 | $135.00 | $1.35M |
| Aug 12, 2026 | DeLuca Richard R. | Sell | 11,699 | $131.63 | $1.54M |
| Aug 12, 2026 | Zachary Jennifer | Other | 109,854 | $109.78 | $12.06M |
| Aug 12, 2026 | Zachary Jennifer | Sell | 80,315 | $133.46 | $10.72M |
| Aug 11, 2026 | DeLuca Richard R. | Sell | 12,837 | $131.76 | $1.69M |
| Aug 10, 2026 | DeLuca Richard R. | Sell | 20,784 | $130.43 | $2.71M |
| Aug 6, 2026 | DeLuca Richard R. | Sell | 6,050 | $130.38 | $789K |
| Aug 6, 2026 | Guindo Chirfi | Sell | 15,000 | $131.00 | $1.97M |
| Aug 5, 2026 | Maraldo David R. | Sell | 2,686 | $128.72 | $346K |
| Aug 5, 2026 | Maraldo David R. | Other | 37,412 | $82.25 | $3.08M |
| Aug 5, 2026 | Williams David Michael | Other | 105,694 | $74.49 | $7.87M |
| Aug 5, 2026 | Williams David Michael | Sell | 34,705 | $128.77 | $4.47M |
| Jun 30, 2026 | Coe Mary Ellen | Other | 233 | — | — |
| Jun 30, 2026 | Karsanbhai Surendralal Lanca | Other | 126 | — | — |
| Jun 30, 2026 | Seidman Christine E | Other | 63 | — | — |
| May 29, 2026 | BAKER DOUGLAS M JR | Other | 1,853 | — | — |
Source: SEC Form 4 filings. "Other" covers awards, option exercises and gifts.