MRK Merck & Co.
NYSE · SEC CIK 310158 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $72.01M 21 sales by 11 insiders
- Filings on record
- 398 since 2021-07-02, latest 2026-08-13 17:02
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Zachary Jennifer | EVP, GC | — | $25.20M |
| DeLuca Richard R. | EVP, Pres, Merck Animal Heallth | — | $11.29M |
| Guindo Chirfi | EVP, Access, Policy, Comms | — | $8.15M |
| Williams David Michael | EVP, Chief Info, Digital Off | — | $8.13M |
| Davis Robert M | COB, CEO, Pres, Dir | — | $5.60M |
| Litchfield Caroline | EVP, CFO | — | $5.02M |
| Li Dean Y | Pres, Executive VP, MRL | — | $2.99M |
| Maraldo David R. | EVP, Pres. MMD | — | $2.41M |
| Oosthuizen Johannes Jacobus | Pres, U.S. Market | — | $1.83M |
| Smart Dalton E. III | SVP Fin. - Gbl Ctrl | — | $766.0K |
Transactions 310
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-13 17:02 | 2026-08-13 | MRK | Guindo Chirfi | EVP, Access, Policy, Comms | S - Sale | $135.00 | -10.0K | 36.6K | -21% | -$1.35M | |
| DM | 2026-08-13 16:11 | 2026-08-12 | MRK | Zachary Jennifer | EVP, GC | M - OptEx | $109.78 | +54.9K | 125.8K | +77% | +$6.03M |
| D | 2026-08-13 16:11 | 2026-08-12 | MRK | Zachary Jennifer | EVP, GC | S - Sale+OE | $133.46 | -80.3K | 45.5K | -64% | -$10.72M |
| M | 2026-08-12 16:10 | 2026-08-10+ | MRK | DeLuca Richard R. | EVP, Pres, Merck Animal Heallth | S - Sale | $131.12 | -45.3K | 110.2K | -29% | -$5.94M |
| M | 2026-08-10 16:28 | 2026-08-06 | MRK | DeLuca Richard R. | EVP, Pres, Merck Animal Heallth | S - Sale | $130.38 | -6,050 | 155.5K | -4% | -$788.8K |
| DM | 2026-08-07 16:21 | 2026-08-05 | MRK | Maraldo David R. | EVP, Pres. MMD | M - OptEx | $82.25 | +18.7K | 20.9K | +853% | +$1.54M |
| DM | 2026-08-07 16:21 | 2026-08-05 | MRK | Maraldo David R. | EVP, Pres. MMD | S - Sale+OE | $128.72 | -18.7K | 18.2K | -51% | -$2.41M |
| DM | 2026-08-07 16:19 | 2026-08-05 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | M - OptEx | $74.49 | +52.8K | 66.4K | +389% | +$3.94M |
| DM | 2026-08-07 16:19 | 2026-08-05 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | S - Sale+OE | $128.77 | -52.8K | 31.7K | -62% | -$6.81M |
| 2026-08-07 16:17 | 2026-08-06 | MRK | Guindo Chirfi | EVP, Access, Policy, Comms | S - Sale | $131.00 | -15.0K | 46.6K | -24% | -$1.97M | |
| D | 2026-05-05 13:51 | 2026-05-02 | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | M - OptEx | $112.16 | +383 | 9,520 | +4% | +$43.0K |
| D | 2026-05-05 13:51 | 2026-05-02 | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | F - Tax | $112.16 | -132 | 9,388 | -1% | -$14.8K |
| D | 2026-05-05 13:47 | 2026-05-02 | MRK | Maraldo David R. | EVP, Pres. MMD | M - OptEx | $112.16 | +552 | 18.4K | +3% | +$61.9K |
| D | 2026-05-05 13:47 | 2026-05-02 | MRK | Maraldo David R. | EVP, Pres. MMD | F - Tax | $112.16 | -159 | 18.2K | -0.9% | -$17.8K |
| D | 2026-05-01 18:54 | 2026-04-29 | MRK | Guindo Chirfi | EVP, Access, Policy, Comms | M - OptEx | $110.03 | +1,967 | 62.6K | +3% | +$216.4K |
| D | 2026-05-01 18:54 | 2026-04-29 | MRK | Guindo Chirfi | EVP, Access, Policy, Comms | F - Tax | $110.03 | -969 | 61.6K | -2% | -$106.6K |
| D | 2026-05-01 18:32 | 2026-04-29 | MRK | Chattopadhyay Sanat | Exe V-P, Pres. MMD | M - OptEx | $110.03 | +2,597 | 16.5K | +19% | +$285.7K |
| D | 2026-05-01 18:32 | 2026-04-29 | MRK | Chattopadhyay Sanat | Exe V-P, Pres. MMD | F - Tax | $110.03 | -1,130 | 15.3K | -7% | -$124.3K |
| D | 2026-05-01 18:20 | 2026-04-29 | MRK | DeLuca Richard R. | EVP, Pres, Merck Animal Heallth | M - OptEx | $110.03 | +2,518 | 162.8K | +2% | +$277.1K |
| D | 2026-05-01 18:20 | 2026-04-29 | MRK | DeLuca Richard R. | EVP, Pres, Merck Animal Heallth | F - Tax | $110.03 | -1,241 | 161.5K | -0.8% | -$136.5K |
| D | 2026-05-01 17:56 | 2026-04-29 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | M - OptEx | $110.03 | +1,377 | 32.4K | +4% | +$151.5K |
| D | 2026-05-01 17:56 | 2026-04-29 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | F - Tax | $110.03 | -679 | 31.7K | -2% | -$74.7K |
| DM | 2026-05-01 17:55 | 2026-04-29+ | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | M - OptEx | $110.33 | +1,408 | 9,296 | +18% | +$155.3K |
| DM | 2026-05-01 17:55 | 2026-04-29+ | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | F - Tax | $110.33 | -483 | 9,137 | -5% | -$53.3K |
| D | 2026-05-01 17:45 | 2026-04-29 | MRK | Li Dean Y | Pres, Executive VP, MRL | M - OptEx | $110.03 | +4,722 | 96.8K | +5% | +$519.6K |
| D | 2026-05-01 17:45 | 2026-04-29 | MRK | Li Dean Y | Pres, Executive VP, MRL | F - Tax | $110.03 | -2,326 | 94.4K | -2% | -$255.9K |
| D | 2026-05-01 17:43 | 2026-04-29 | MRK | Zachary Jennifer | EVP, GC | M - OptEx | $110.03 | +2,951 | 72.4K | +4% | +$324.7K |
| D | 2026-05-01 17:43 | 2026-04-29 | MRK | Zachary Jennifer | EVP, GC | F - Tax | $110.03 | -1,454 | 70.9K | -2% | -$160.0K |
| DM | 2026-05-01 17:42 | 2026-04-29+ | MRK | Larson Betty D | EVP, Chief HR Off | M - OptEx | $110.81 | +13.4K | 18.9K | +245% | +$1.49M |
| DM | 2026-05-01 17:42 | 2026-04-29+ | MRK | Larson Betty D | EVP, Chief HR Off | F - Tax | $110.84 | -5,858 | 13.8K | -30% | -$649.3K |
| D | 2026-05-01 17:39 | 2026-04-29 | MRK | Litchfield Caroline | EVP, CFO | M - OptEx | $110.03 | +3,935 | 94.2K | +4% | +$433.0K |
| D | 2026-05-01 17:39 | 2026-04-29 | MRK | Litchfield Caroline | EVP, CFO | F - Tax | $110.03 | -1,938 | 92.3K | -2% | -$213.2K |
| D | 2026-05-01 17:38 | 2026-04-29 | MRK | Davis Robert M | COB, CEO, Pres, Dir | M - OptEx | $110.03 | +13.3K | 456.9K | +3% | +$1.46M |
| D | 2026-05-01 17:38 | 2026-04-29 | MRK | Davis Robert M | COB, CEO, Pres, Dir | F - Tax | $110.03 | -6,551 | 450.4K | -1% | -$720.8K |
| D | 2026-05-01 17:34 | 2026-04-29 | MRK | Oosthuizen Johannes Jacobus | EVP, Oncology, Int?l | M - OptEx | $110.03 | +1,377 | 22.6K | +6% | +$151.5K |
| D | 2026-05-01 17:34 | 2026-04-29 | MRK | Oosthuizen Johannes Jacobus | EVP, Oncology, Int?l | F - Tax | $110.03 | -679 | 21.9K | -3% | -$74.7K |
| 2026-02-12 | 2026-02-12 | MRK | Guindo Chirfi | CMO | S - Sale | $121.46 | -10.0K | 60.6K | -14% | -$1.21M | |
| 2026-02-10 | 2026-02-10 | MRK | Li Dean Y | Pres, Executive VP, MRL | S - Sale | $117.52 | -10.2K | 92.0K | -10% | -$1.20M | |
| DM | 2026-02-09 | 2026-02-09 | MRK | Zachary Jennifer | EVP, GC | M - OptEx | $119.15 | +121.6K | 125.7K | +2,940% | +$14.49M |
| DM | 2026-02-09 | 2026-02-09 | MRK | Zachary Jennifer | EVP, GC | S - Sale+OE | $119.15 | -121.6K | 68.9K | -64% | -$14.49M |
| 2026-02-09 | 2026-02-09 | MRK | Guindo Chirfi | CMO | S - Sale | $118.41 | -10.0K | 70.6K | -12% | -$1.18M | |
| D | 2026-02-06 | 2026-02-06 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | M - OptEx | $77.62 | +5,000 | 35.8K | +16% | +$388.1K |
| D | 2026-02-06 | 2026-02-06 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | S - Sale+OE | $121.91 | -5,000 | 30.8K | -14% | -$609.5K |
| 2026-02-06 | 2026-02-06 | MRK | DeLuca Richard R. | EVP, Pres, Merck Animal Heallth | S - Sale | $120.92 | -37.7K | 160.2K | -19% | -$4.56M | |
| D | 2026-02-06 | 2026-02-04 | MRK | Litchfield Caroline | EVP, CFO | S - Sale+OE | $119.61 | -42.0K | 90.2K | -32% | -$5.02M |
| D | 2026-02-06 | 2026-02-04 | MRK | Litchfield Caroline | EVP, CFO | M - OptEx | $53.06 | +42.0K | 132.2K | +47% | +$2.23M |
| M | 2026-02-06 | 2026-02-04 | MRK | Davis Robert M | COB, CEO, Pres, Dir | S - Sale | $118.04 | -47.4K | 443.6K | -10% | -$5.60M |
| DM | 2026-02-06 | 2026-02-04 | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | S - Sale+OE | $119.68 | -6,400 | 10.6K | -38% | -$766.0K |
| D | 2026-02-06 | 2026-02-04 | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | M - OptEx | $62.07 | +4,000 | 14.6K | +38% | +$248.3K |
| D | 2026-02-06 | 2026-02-04 | MRK | Li Dean Y | Pres, Executive VP, MRL | M - OptEx | $56.04 | +15.1K | 117.4K | +15% | +$845.5K |
| D | 2026-02-06 | 2026-02-04 | MRK | Li Dean Y | Pres, Executive VP, MRL | S - Sale+OE | $118.77 | -15.1K | 102.3K | -13% | -$1.79M |
| 2026-02-06 | 2026-02-05 | MRK | Guindo Chirfi | CMO | S - Sale | $121.88 | -20.0K | 80.6K | -20% | -$2.44M | |
| 2026-02-06 | 2026-02-06 | MRK | Oosthuizen Johannes Jacobus | Pres, U.S. Market | S - Sale | $121.87 | -15.0K | 21.2K | -41% | -$1.83M | |
| 2026-01-28 | 2026-01-26 | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | A - Grant | $107.40 | +1,066 | 10.6K | +11% | +$114.5K | |
| 2026-01-28 | 2026-01-26 | MRK | Li Dean Y | Pres, Executive VP, MRL | A - Grant | $107.40 | +20.5K | 102.3K | +25% | +$2.20M | |
| 2026-01-28 | 2026-01-26 | MRK | DeLuca Richard R. | EVP, Pres, Merck Animal Heallth | A - Grant | $107.40 | +12.3K | 197.9K | +7% | +$1.32M | |
| 2026-01-28 | 2026-01-26 | MRK | Guindo Chirfi | CMO | A - Grant | $107.40 | +9,865 | 100.6K | +11% | +$1.06M | |
| 2026-01-28 | 2026-01-26 | MRK | Chattopadhyay Sanat | Exe V-P, Pres. MMD | A - Grant | $107.40 | +13.9K | 13.9K | New | +$1.49M | |
| 2026-01-28 | 2026-01-26 | MRK | Romanelli Joseph | Pres, Human Health Int?l | A - Grant | $107.40 | +5,703 | 28.7K | +25% | +$612.5K | |
| 2026-01-28 | 2026-01-26 | MRK | Oosthuizen Johannes Jacobus | Pres, U.S. Market | A - Grant | $107.40 | +5,026 | 36.2K | +16% | +$539.8K | |
| 2026-01-28 | 2026-01-26 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | A - Grant | $107.40 | +6,112 | 30.8K | +25% | +$656.4K | |
| 2026-01-28 | 2026-01-26 | MRK | Davis Robert M | COB, CEO, Pres, Dir | A - Grant | $107.40 | +47.4K | 491.0K | +11% | +$5.09M | |
| 2026-01-28 | 2026-01-26 | MRK | Zachary Jennifer | EVP, GC | A - Grant | $107.40 | +11.6K | 68.9K | +20% | +$1.24M | |
| 2026-01-28 | 2026-01-26 | MRK | Litchfield Caroline | EVP, CFO | A - Grant | $107.40 | +15.9K | 90.2K | +21% | +$1.70M | |
| 2025-11-12 | 2025-11-10 | MRK | Downing Cristal N | Chief Comm, Public Afrs Ofcr | S - Sale | $87.00 | -7,085 | 0 | -100% | -$616.4K | |
| 2025-11-04 | 2025-11-03 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | S - Sale | $83.59 | -8,614 | 24.6K | -26% | -$720.0K | |
| D | 2025-08-05 | 2025-08-04 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | M - OptEx | $79.29 | +17.1K | 41.4K | +70% | +$1.36M |
| D | 2025-08-05 | 2025-08-04 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | F - Tax | $79.29 | -8,432 | 33.0K | -20% | -$668.6K |
| D | 2025-08-05 | 2025-08-04 | MRK | Guindo Chirfi | CMO | M - OptEx | $79.29 | +36.9K | 107.4K | +52% | +$2.93M |
| D | 2025-08-05 | 2025-08-04 | MRK | Guindo Chirfi | CMO | F - Tax | $79.29 | -18.2K | 89.2K | -17% | -$1.44M |
| DM | 2025-05-05 | 2025-05-03 | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | M - OptEx | $83.18 | +2,050 | 10.1K | +25% | +$170.5K |
| DM | 2025-05-05 | 2025-05-03 | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | F - Tax | $83.18 | -844 | 9,539 | -8% | -$70.2K |
| DM | 2025-05-02 | 2025-04-30+ | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | M - OptEx | $84.06 | +845 | 8,242 | +11% | +$71.0K |
| DM | 2025-05-02 | 2025-04-30+ | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | F - Tax | $84.06 | -290 | 8,083 | -3% | -$24.4K |
| DM | 2025-05-02 | 2025-04-30+ | MRK | Romanelli Joseph | Pres, Human Health Int?l | M - OptEx | $83.95 | +4,325 | 24.1K | +22% | +$363.1K |
| DM | 2025-05-02 | 2025-04-30+ | MRK | Romanelli Joseph | Pres, Human Health Int?l | F - Tax | $83.95 | -2,132 | 22.9K | -9% | -$179.0K |
| D | 2025-05-02 | 2025-04-30 | MRK | Larson Betty D | EVP, Chief HR Off | F - Tax | $84.71 | -5,153 | 6,197 | -45% | -$436.5K |
| D | 2025-05-02 | 2025-04-30 | MRK | Larson Betty D | EVP, Chief HR Off | M - OptEx | $84.71 | +11.3K | 11.3K | New | +$961.5K |
| D | 2025-04-29 | 2025-04-25 | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | M - OptEx | $58.08 | +5,000 | 12.0K | +71% | +$290.4K |
| D | 2025-04-29 | 2025-04-25 | MRK | Smart Dalton E. III | SVP Fin. - Gbl Ctrl | S - Sale+OE | $82.76 | -4,262 | 7,778 | -35% | -$352.7K |
| 2025-02-20 | 2025-02-19 | MRK | Oosthuizen Johannes Jacobus | Pres, U.S. Market | S - Sale | $84.09 | -8,500 | 30.7K | -22% | -$714.8K | |
| 2025-02-13 | 2025-02-13 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | S - Sale | $85.34 | -6,000 | 24.1K | -20% | -$512.0K | |
| D | 2025-02-11 | 2025-02-08 | MRK | Oosthuizen Johannes Jacobus | Pres, U.S. Market | F - Tax | $87.28 | -6,404 | 39.2K | -14% | -$558.9K |
| D | 2025-02-11 | 2025-02-08 | MRK | Oosthuizen Johannes Jacobus | Pres, U.S. Market | M - OptEx | $87.28 | +13.0K | 45.6K | +40% | +$1.13M |
| 2025-02-07 | 2025-02-06 | MRK | Downing Cristal N | Chief Comm, Public Afrs Ofcr | S - Sale | $88.76 | -2,361 | 7,085 | -25% | -$209.6K | |
| 2025-02-07 | 2025-02-05 | MRK | BAKER DOUGLAS M JR | Dir | P - Purchase | $88.50 | +15.0K | 16.0K | +1,500% | +$1.33M | |
| 2025-02-07 | 2025-02-06 | MRK | THULIN INGE G | Dir | P - Purchase | $88.25 | +2,833 | 2,933 | +2,833% | +$250.0K | |
| 2025-01-29 | 2025-01-27 | MRK | Davis Robert M | COB, CEO, Pres, Dir | A - Grant | $97.94 | +95.3K | 443.6K | +27% | +$9.33M | |
| 2025-01-29 | 2025-01-27 | MRK | Downing Cristal N | Chief Comm, Public Afrs Ofcr | A - Grant | $97.94 | +9,446 | 9,446 | New | +$925.1K | |
| 2025-01-29 | 2025-01-27 | MRK | Zachary Jennifer | EVP, GC | A - Grant | $97.94 | +25.4K | 55.3K | +85% | +$2.49M | |
| 2025-01-29 | 2025-01-27 | MRK | Williams David Michael | EVP, Chief Info, Digital Off | A - Grant | $97.94 | +10.2K | 30.1K | +52% | +$1.00M | |
| 2025-01-29 | 2025-01-27 | MRK | Oosthuizen Johannes Jacobus | Pres, U.S. Market | A - Grant | $97.94 | +8,664 | 32.6K | +36% | +$848.6K | |
| 2025-01-29 | 2025-01-27 | MRK | Litchfield Caroline | EVP, CFO | A - Grant | $97.94 | +23.4K | 74.3K | +46% | +$2.29M | |
| 2025-01-29 | 2025-01-27 | MRK | Smart Dalton | SVP Fin. - Gbl Ctrl | A - Grant | $97.94 | +2,586 | 7,014 | +58% | +$253.3K | |
| 2025-01-29 | 2025-01-27 | MRK | Li Dean Y | Pres, Executive VP, MRL | A - Grant | $97.94 | +32.6K | 79.6K | +69% | +$3.19M | |
| 2025-01-29 | 2025-01-27 | MRK | Chattopadhyay Sanat | Exe V-P, Pres. MMD | A - Grant | $97.94 | +28.1K | 78.8K | +56% | +$2.76M | |
| 2025-01-29 | 2025-01-27 | MRK | Guindo Chirfi | CMO | A - Grant | $97.94 | +28.2K | 69.1K | +69% | +$2.76M | |
| 2025-01-29 | 2025-01-27 | MRK | DeLuca Richard R. | EVP, Pres, Merck Animal Heallth | A - Grant | $97.94 | +25.4K | 179.0K | +17% | +$2.49M | |
| D | 2024-08-06 | 2024-08-05 | MRK | Guindo Chirfi | CMO | M - OptEx | $115.20 | +36.9K | 57.8K | +177% | +$4.25M |
| D | 2024-08-06 | 2024-08-05 | MRK | Guindo Chirfi | CMO | F - Tax | $115.20 | -17.4K | 40.4K | -30% | -$2.01M |
Purchase Sale Sale after option exercise All abbreviations