QUEST DIAGNOSTICS INC (DGX) has 271 open-market insider trades by 34 insiders since 2006. The most active filer is Michael E. Prevoznik, CLO & VP.
| Name | Title | Tier | Trades | Value | Last Trade |
|---|---|---|---|---|---|
| Glaxosmithkline PLC | Dir10% | — | 2 | $1.9B | 2011-01-31 |
| Stephen H. Rusckowski | CEOChairmanPres | — | 14 | $204.5M | 2023-03-06 |
| Catherine T. Doherty | VP | — | 29 | $86.7M | 2026-03-05 |
| Michael E. Prevoznik | CLOVP | — | 34 | $81.1M | 2026-08-28 |
| Surya N. Mohapatra | ChairmanPres | — | 8 | $59.9M | 2012-04-30 |
| Jon R. Cohen | VP | — | 4 | $41.8M | 2018-03-08 |
| Mark Guinan | PresCFOVP | — | 6 | $32.4M | 2022-03-07 |
| Robert Hagemann | CFO | — | 25 | $32.3M | 2013-03-05 |
| Everett Cunningham | VP | — | 7 | $29.1M | 2019-03-04 |
| J. E. Davis | CEOPres | — | 10 | $27.9M | 2026-09-01 |
| Insider | Title | Type | Value | Date |
|---|---|---|---|---|
| J. E. Davis | CEO & President | Sell | $2.4M | 2026-09-01 |
| Michael E. Prevoznik | CLO & VP | Sell | $5.5M | 2026-08-28 |
| Mark E. Delaney | CCO & VP | Sell | $376K | 2026-07-28 |
| Karthik Kuppusamy | VP | Sell | $1.6M | 2026-06-04 |
| J. E. Davis | CEO & President | Sell | $1.9M | 2026-06-01 |
| Catherine T. Doherty | EVP & Regional Businesses | Sell | $1.1M |
Companies that share insiders with DGX, and sector peers with recent insider buying. Related by who files, not by how the stocks move.
| 2026-03-05 |
| Patrick Plewman | VP | Sell | $589K | 2026-03-05 |
| Michael E. Prevoznik | SVP & General Counsel | Sell | $800K | 2026-03-05 |
| Karthik Kuppusamy | SVP & Clinical Solutions | Sell | $538K | 2026-03-04 |
| Catherine T. Doherty | EVP & Regional Businesses | Sell | $131K | 2026-03-03 |
| Patrick Plewman | SVP for Diagnostic Services | Sell | $85K | 2026-03-03 |
| Michael E. Prevoznik | SVP & General Counsel | Sell | $109K | 2026-03-03 |
| J. E. Davis | President | Sell | $2.1M | 2026-03-02 |
| Catherine T. Doherty | VP | Sell | $294K | 2026-02-19 |
| Michael E. Prevoznik | CLO & VP | Sell | $228K | 2026-02-19 |