List of insiders holdings for QUEST DIAGNOSTICS INC:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | RUSCKOWSKI STEPHEN H Director | 2023-03-08 16:29:53 | 389,597 0 | 389,597 | Form 4 |
| 2 | MOHAPATRA SURYA N Chairman, President & CEO | 2012-05-02 16:24:07 | 243,713 10,813 | 254,526 | Form 4 |
| 3 | FREEMAN KENNETH W Chairman of the Board | 2004-12-14 17:52:53 | 216,187 2,109 | 218,296 | Form 4 |
| 4 | HAGEMANN ROBERT SVP & Chief Financial Officer | 2013-03-07 16:30:46 | 126,722 35,798 | 162,520 | Form 4 |
| 5 | Davis J. E. CEO and President | 2026-09-03 17:05:30 | 122,423 0 | 122,423 | Form 4 |
| 6 | ZEWE DAVID M SVP, Diagnostic Testing Ops | 2007-02-13 19:40:46 | 94,448 4,970 | 99,418 | Form 4 |
| 7 | GUINAN MARK Executive Vice President & CFO | 2022-03-09 16:48:30 | 98,981 0 | 98,981 | Form 4 |
| 8 | Miller Joan Elizabeth SVP-Oncology & Neurology Srvcs | 2012-03-02 16:48:51 | 89,232 1,047 | 90,279 | Form 4 |
| 9 | Doherty Catherine T. EVP, Regional Businesses | 2026-03-06 16:45:04 | 67,122 4,502 | 71,624 | Form 4 |
| 10 | Peters Robert E VP, Sales & Marketing | 2007-02-13 19:35:25 | 63,118 1,882 | 65,000 | Form 4 |
| 11 | Simmons Wayne R. Vice President, Operations | 2011-06-20 16:31:34 | 63,150 602 | 63,752 | Form 4 |
| 12 | Mendez Manuel O. SVP & Chief Commercial Officer | 2021-02-22 16:50:28 | 56,678 0 | 56,678 | Form 4 |
| 13 | MARRONE GERALD C SVP, Administration | 2004-03-02 18:48:46 | 49,609 2,440 | 52,049 | Form 4 |
| 14 | GRANT THOMAS W II Sr VP, Ins. & Employer Serv. | 2007-02-13 19:25:45 | 51,460 0 | 51,460 | Form 4 |
| 15 | Cohen Jon R SVP & Group Exec. Diag. Sol. | 2018-03-12 16:33:53 | 51,221 0 | 51,221 | Form 4 |
| 16 | EGLINTON MANNER CARRIE SVP, Advanced Diagnostics | 2022-03-09 16:44:42 | 48,391 0 | 48,391 | Form 4 |
| 17 | PREVOZNIK MICHAEL E SVP & General Counsel | 2026-08-31 16:37:15 | 36,557 5,780 | 42,337 | Form 4 |
| 18 | Cunningham Everett SVP, Commercial | 2019-03-25 16:36:30 | 37,760 721 | 38,481 | Form 4 |
| 19 | Deppe Michael J SVP, Corp. Controller & CAO | 2026-03-06 16:43:41 | 35,196 0 | 35,196 | Form 4 |
| 20 | WILENSKY GAIL R Director | 2023-05-19 18:17:44 | 20,506 13,375 | 33,881 | Form 4 |
| 21 | SAMAD SAM Executive Vice President & CFO | 2026-07-27 16:33:28 | 33,478 0 | 33,478 | Form 4 |
| 22 | RING TIMOTHY M Director | 2026-05-21 16:54:52 | 31,140 0 | 31,140 | Form 4 |
| 23 | PFEIFFER GARY M Director | 2026-05-21 16:52:10 | 31,005 0 | 31,005 | Form 4 |
| 24 | STANZIONE DANIEL Director | 2020-11-24 16:31:08 | 28,349 0 | 28,349 | Form 4 |
| 25 | MAIN TIMOTHY L Director | 2026-07-27 16:33:59 | 22,460 5,000 | 27,460 | Form 4 |
| 26 | BUEHLER WILLIAM F Director | 2014-02-14 16:20:34 | 26,225 0 | 26,225 | Form 4 |
| 27 | Haydon John B. SVP, Operations | 2014-02-18 20:11:02 | 25,366 0 | 25,366 | Form 4 |
| 28 | Gregg Vicky B Director | 2026-07-27 16:34:58 | 18,386 0 | 18,386 | Form 4 |
| 29 | HAGGERTY ROSANNE Director | 2010-05-10 16:15:37 | 17,334 0 | 17,334 | Form 4 |
| 30 | ZIEGLER JOHN B Director | 2017-02-24 16:32:23 | 16,557 0 | 16,557 | Form 4 |
| 31 | KUPPUSAMY KARTHIK SVP, Clinical Solutions | 2026-07-27 16:35:39 | 13,557 2,049 | 15,606 | Form 4 |
| 32 | Plewman Patrick SVP for Diagnostic Services | 2026-07-27 16:34:17 | 15,293 0 | 15,293 | Form 4 |
| 33 | BONGIORNO THOMAS F VP and Corporate Controller | 2015-03-03 18:26:01 | 11,837 3,165 | 15,002 | Form 4 |
| 34 | BRITELL JENNE K Director | 2018-06-06 17:12:13 | 0 14,479 | 14,479 | Form 4 |
| 35 | BALDWIN JOHN C MD Director | 2015-08-13 16:49:10 | 12,949 0 | 12,949 | Form 4 |
| 36 | MORRISON DENISE M Director | 2026-05-21 16:53:04 | 11,929 0 | 11,929 | Form 4 |
| 37 | DELANEY MARK E SVP & Chief Commercial Officer | 2026-07-29 17:04:48 | 10,335 0 | 10,335 | Form 4 |
| 38 | Lassiter Wright III Director | 2026-07-27 16:33:06 | 10,323 0 | 10,323 | Form 4 |
| 39 | ORDONEZ KATHY SVP, Diagnostic Solutions | 2013-04-02 16:38:04 | 9,569 0 | 9,569 | Form 4 |
| 40 | Doi Tracey Director | 2026-05-21 16:55:55 | 7,748 0 | 7,748 | Form 4 |
| 41 | Klug Robert A VP, Corporate Controller | 2019-03-05 16:31:38 | 6,261 0 | 6,261 | Form 4 |
| 42 | Torley Helen Director | 2021-05-25 16:41:27 | 6,260 0 | 6,260 | Form 4 |
| 43 | LEIDEN JEFFREY M Director | 2018-05-30 16:38:20 | 6,000 0 | 6,000 | Form 4 |
| 44 | Diaz Luis Director | 2026-05-21 16:57:33 | 5,196 0 | 5,196 | Form 4 |
| 45 | GARDNER MARK A SVP of Molecular Gen & Oncol | 2024-09-26 16:28:50 | 4,673 0 | 4,673 | Form 4 |
| 46 | CARTER ROBERT B Director | 2026-07-27 16:35:17 | 3,864 0 | 3,864 | Form 4 |
| 47 | FLAHERTY JAMES F III Director | 2006-05-08 16:27:13 | 1,667 2,000 | 3,667 | Form 4 |
| 48 | GRANT WILLIAM R Director | 2007-04-03 16:23:29 | 3,622 0 | 3,622 | Form 4 |
| 49 | CIRILLO MARY A Director | 2004-04-05 16:04:09 | 2,707 0 | 2,707 | Form 4 |
| 50 | WENTWORTH TIMOTHY C Director | 2026-10-02 16:33:40 | 477 0 | 477 | Form 4 |
| 51 | GLAXOSMITHKLINE PLC Director 10% Owner | 2011-02-02 13:55:59 | 0 0 | 0 | Form 4 |
| 52 | BRODY KENNETH D Director | 2004-04-28 17:33:49 | 0 0 | 0 | Form 4 |