Merck & Co., Inc. (MRK) has 234 open-market insider trades by 57 insiders since 2002. Over the last six months insiders net sold $30.0M. The most active filer is Kenneth C. Frazier, Chairman.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Kenneth C. Frazier | Chairman | — | 29 | $754.7M | 2022-11-07 |
| Robert M. Davis | CEOChairmanPres | — | 7 | $207.1M | 2026-04-29 |
| Richard R. DeLuca | PresVP | — | 13 | $122.1M | 2026-08-12 |
| Jennifer Zachary | CLOVP | — | 6 | $90.7M | 2026-08-12 |
| Sanat Chattopadhyay | Pres | — | 8 | $70.0M | 2026-04-29 |
| Adam H. Schechter | PresVP | — | 12 | $59.0M | 2018-11-01 |
| Julie L. Gerberding | VP | — | 8 | $53.3M | 2022-02-24 |
| Roger M. Perlmutter | Pres | — | 1 | $33.9M | 2020-02-28 |
| Michael J. Holston | CLOVP | — | 5 | $29.2M | 2018-02-27 |
| Bruce N. Kuhlik | Exe V-P & Gen Counsel | — | 4 | $26.7M | 2015-05-04 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| Chirfi Guindo | VP | Sell | $1.4M | 2026-08-13 |
| Jennifer Zachary | CLO & VP | Sell | $10.7M | 2026-08-12 |
| Richard R. DeLuca | President & VP | Sell | $5.9M | 2026-08-10 |
| Chirfi Guindo | VP | Sell | $2.0M | 2026-08-06 |
| Richard R. DeLuca | President & VP | Sell | $789K | 2026-08-06 |
| David Michael Williams | VP | Sell | $6.8M | 2026-08-05 |
Companies that share insiders with MRK, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| David R. Maraldo | President & VP | Sell | $2.4M | 2026-08-05 |
| Chirfi Guindo | CMO | Sell | $1.2M | 2026-02-12 |
| Dean Y. Li | President & MRL | Sell | $1.2M | 2026-02-10 |
| Jennifer Zachary | CLO & VP | Sell | $14.5M | 2026-02-09 |
| Chirfi Guindo | CMO | Sell | $1.2M | 2026-02-09 |
| Johannes Jacobus Oosthuizen | President & U.S. Market | Sell | $1.8M | 2026-02-06 |
| David Michael Williams | EVP & Chief Info&Digital Officer | Sell | $610K | 2026-02-06 |
| Richard R. DeLuca | EVP&Pres & Merck Animal Heallth | Sell | $4.6M | 2026-02-06 |
| Chirfi Guindo | CMO | Sell | $2.4M | 2026-02-05 |