Insider Shareholders with Direct Ownership of Quest Diagnostics Inc (DGX)
This section provides a comprehensive overview of the insiders with direct ownership of Quest Diagnostics Inc (DGX). You can find detailed information about the size and nature of each insider's ownership stake, as well as the latest updates on their holdings.
QUEST DIAGNOSTICS INC Insider List
| Insider | Adquired | Disposed | Held | # of Trades | Last Transaction |
|---|---|---|---|---|---|
|
Stephen H Rusckowski
Director |
1,139,910 | 988,060 | 389,597 $53.4 Million | 30 |
Mar 06, 2023
Reduced 9.02%
|
|
J. E. Davis
CEO and President |
269,305 | 186,911 | 120,480 $16.5 Million | 30 |
Nov 25, 2025
Reduced 3.79%
|
|
Mark Guinan
Executive Vice President & CFO |
127,774 | 102,372 | 98,981 $13.6 Million | 11 |
Mar 07, 2022
Reduced 9.57%
|
|
Catherine T. Doherty
EVP, Regional Businesses |
184,625 | 184,968 | 68,068 $9.33 Million | 42 |
Mar 05, 2025
Reduced 7.31%
|
|
Manner Carrie Eglinton
SVP, Advanced Diagnostics |
46,014 | 20,357 | 48,391 $6.63 Million | 10 |
Mar 07, 2022
Reduced 14.11%
|
|
Michael E Prevoznik
SVP & General Counsel |
287,234 | 289,016 | 38,117 $5.23 Million | 54 |
Sep 26, 2025
Reduced 0.38%
|
|
Michael J Deppe
SVP, Corp. Controller & CAO |
60,326 | 51,401 | 34,365 $4.71 Million | 33 |
Mar 04, 2025
Reduced 2.46%
|
|
Timothy M Ring
Director |
18,734 | 12,025 | 29,507 $4.05 Million | 17 |
May 15, 2025
Added 3.92%
|
|
Gary M Pfeiffer
Director |
6,709 | 1,482 | 29,431 $4.03 Million | 6 |
Oct 22, 2025
Reduced 4.79%
|
|
Manuel O. Mendez
SVP & Chief Commercial Officer |
4,926 | 5,871 | 29,045 $3.98 Million | 2 |
Feb 17, 2021
Added 14.5%
|
|
Daniel Stanzione
Director |
0 | 11,223 | 28,349 $3.89 Million | 1 |
Nov 23, 2020
Reduced 7.5%
|
|
Timothy L Main
Director |
6,709 | 0 | 26,297 $3.61 Million | 5 |
May 15, 2025
Added 4.37%
|
|
Sam Samad
Executive Vice President & CFO |
28,976 | 18,909 | 25,741 $3.53 Million | 20 |
Oct 21, 2025
Added 0.26%
|
|
Gail R Wilensky
Director |
22,357 | 18,333 | 20,506 $2.81 Million | 7 |
May 17, 2023
Added 6.26%
|
|
Vicky B Gregg
Director |
7,831 | 5,000 | 17,037 $2.34 Million | 23 |
Nov 25, 2025
Reduced 6.84%
|
|
Patrick Plewman
SVP for Diagnostic Services |
25,810 | 19,802 | 15,333 $2.1 Million | 37 |
Oct 21, 2025
Added 0.3%
|
|
Denise M Morrison
Director |
6,709 | 0 | 10,742 $1.47 Million | 5 |
May 15, 2025
Added 10.07%
|
|
Wright Lassiter Iii
Director |
6,716 | 0 | 9,044 $1.24 Million | 6 |
Jul 21, 2025
Added 0.08%
|
|
Karthik Kuppusamy
SVP, Clinical Solutions |
24,031 | 24,058 | 8,379 $1.15 Million | 38 |
Oct 21, 2025
Added 0.18%
|
|
Mark E Delaney
SVP & Chief Commercial Officer |
19,416 | 13,617 | 7,530 $1.03 Million | 23 |
Nov 18, 2025
Reduced 51.34%
|
|
Tracey Doi
Director |
6,251 | 0 | 6,490 $889,714 | 5 |
May 15, 2025
Added 15.64%
|
|
Helen Torley
Director |
1,363 | 0 | 6,260 $858,183 | 1 |
May 25, 2021
Added 17.88%
|
|
Mark A Gardner
SVP of Molecular Gen & Oncol |
4,169 | 498 | 4,673 $640,621 | 5 |
Sep 24, 2024
Reduced 2.5%
|
|
Luis Diaz
Director |
4,054 | 0 | 4,054 $555,762 | 3 |
May 15, 2025
Added 22.88%
|
|
Robert B Carter
Director |
2,698 | 0 | 2,698 $369,868 | 4 |
Oct 21, 2025
Added 0.22%
|