Insider Transactions Reported by 24 Insiders of QUEST DIAGNOSTICS INC

Symbol
DGX on NYSE
Location
Secaucus, NJ

Insiders trading volume in the past year

QUEST DIAGNOSTICS INC executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Stephen H. Rusckowski Director $47,867,056 06 Mar 2023
J. E. Davis CEO and President, Director $27,238,398 -$19,317,034 -41% 04 Mar 2026
Catherine T. Doherty EVP, Regional Businesses $14,702,234 -$6,964,737 -32% 04 Mar 2026
Mark Guinan Executive Vice President & CFO $13,108,142 07 Mar 2022
Michael E. Prevoznik SVP & General Counsel $8,841,829 -$6,505,262 -42% 04 Mar 2026
Timothy M. Ring Director $7,948,934 01 Oct 2025
Sam Samad Executive Vice President & CFO $7,870,127 04 Mar 2026
Manner Carrie Eglinton SVP, Advanced Diagnostics $7,592,213 07 Mar 2022
Michael J. Deppe SVP, Corp. Controller & CAO $6,881,798 04 Mar 2026
Gary M. Pfeiffer Director $5,368,214 -$270,317 -4.8% 22 Oct 2025
Timothy L. Main Director $4,646,153 15 May 2025
Gail R. Wilensky Director $4,162,722 17 May 2023
Mark E. Delaney SVP & Chief Commercial Officer $3,341,671 -$1,795,483 -35% 04 Mar 2026
Karthik Kuppusamy SVP, Clinical Solutions $3,139,082 -$2,732,653 -47% 04 Mar 2026
Vicky B. Gregg Director $3,138,806 -$239,700 -7.1% 28 Jan 2026
Patrick Plewman SVP for Diagnostic Services $3,133,979 -$4,544,030 -59% 04 Mar 2026
Denise M. Morrison Director $1,897,896 15 May 2025
Wright Lassiter III Director $1,722,051 28 Jan 2026
Mark A. Gardner SVP of Molecular Gen & Oncol $1,539,829 24 Sep 2024
Tracey Doi Director $1,146,653 15 May 2025
Helen Torley Director $769,122 25 May 2021
Luis Diaz Director $716,260 15 May 2025
Robert B. Carter Director $496,211 28 Jan 2026
Timothy C. Wentworth Director $41,118 09 Mar 2026

Recent Insider Transactions by Companies or Individuals for QUEST DIAGNOSTICS INC

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
Timothy C. Wentworth DGX Common Stock Award 215 215 09 Mar 2026 Direct
Catherine T. Doherty DGX Common Stock Sale -7.65% $1,146,115 $206.21 -5,558 67,122 05 Mar 2026 Direct
Michael E. Prevoznik DGX Common Stock Sale -9.36% $799,682 $206.21 -3,878 37,557 05 Mar 2026 Direct
Patrick Plewman DGX Common Stock Sale -15.8% $588,730 $206.21 -2,855 15,198 05 Mar 2026 Direct
Sam Samad DGX Common Stock Tax liability -18.8% -7,720 33,268 04 Mar 2026 Direct
Sam Samad DGX Common Stock Award 51.6% 13,947 40,988 04 Mar 2026 Direct
Catherine T. Doherty DGX Common Stock Tax liability -7.4% -5,806 72,680 04 Mar 2026 Direct
Catherine T. Doherty DGX Common Stock Award 16.9% 11,364 78,486 04 Mar 2026 Direct
Mark E. Delaney DGX Common Stock Tax liability -16.4% -2,326 11,864 04 Mar 2026 Direct
Mark E. Delaney DGX Common Stock Award 66.8% 5,682 14,190 04 Mar 2026 Direct
Michael E. Prevoznik DGX Common Stock Tax liability -7.49% -3,354 41,435 04 Mar 2026 Direct
Michael E. Prevoznik DGX Common Stock Award 19.3% 7,232 44,789 04 Mar 2026 Direct
J. E. Davis DGX Common Stock Tax liability -15.6% -26,414 142,423 04 Mar 2026 Direct
J. E. Davis DGX Common Stock Award 44.1% 51,652 168,837 04 Mar 2026 Direct
Patrick Plewman DGX Common Stock Tax liability -13.5% -2,827 18,053 04 Mar 2026 Direct
Patrick Plewman DGX Common Stock Award 37.4% 5,682 20,880 04 Mar 2026 Direct
Michael J. Deppe DGX Common Stock Tax liability -2.09% -750 35,196 04 Mar 2026 Direct
Michael J. Deppe DGX Common Stock Award 4.27% 1,473 35,946 04 Mar 2026 Direct
Karthik Kuppusamy DGX Common Stock Sale -16.4% $538,372 $204.86 -2,628 13,441 04 Mar 2026 Direct
Karthik Kuppusamy DGX Common Stock Award 62.8% 6,200 16,069 04 Mar 2026 Direct
Catherine T. Doherty DGX Common Stock Sale -0.93% $131,285 $207.73 -632 67,122 03 Mar 2026 Direct
Michael E. Prevoznik DGX Common Stock Sale -1.38% $109,266 $207.73 -526 37,557 03 Mar 2026 Direct
Patrick Plewman DGX Common Stock Sale -2.63% $85,169 $207.73 -410 15,198 03 Mar 2026 Direct
Catherine T. Doherty DGX Common Stock Tax liability -0.95% -648 67,754 02 Mar 2026 Direct
Sam Samad DGX Common Stock Tax liability -3.11% -869 27,041 02 Mar 2026 Direct
Michael E. Prevoznik DGX Common Stock Tax liability -0.75% -288 38,083 02 Mar 2026 Direct
J. E. Davis DGX Common Stock Sale -7.86% $2,125,200 $212.52 -10,000 117,185 02 Mar 2026 Direct
J. E. Davis DGX Common Stock Tax liability -2.28% -2,968 127,185 02 Mar 2026 Direct
Patrick Plewman DGX Common Stock Tax liability -1.45% -230 15,608 02 Mar 2026 Direct
Karthik Kuppusamy DGX Common Stock Tax liability -2.03% -205 9,869 02 Mar 2026 Direct
Mark E. Delaney DGX Common Stock Tax liability -2.16% -188 8,508 02 Mar 2026 Direct
Michael J. Deppe DGX Common Stock Tax liability -0.25% -88 34,473 02 Mar 2026 Direct
Patrick Plewman DGX Common Stock Sale -5.7% $196,227 $204.83 -958 15,838 19 Feb 2026 Direct
Michael E. Prevoznik DGX Common Stock Sale -2.81% $227,566 $204.83 -1,111 38,371 19 Feb 2026 Direct
Catherine T. Doherty DGX Common Stock Sale -2.05% $293,521 $204.83 -1,433 68,402 19 Feb 2026 Direct
Patrick Plewman DGX Common Stock Tax liability -3.1% -537 16,796 18 Feb 2026 Direct
Patrick Plewman DGX Common Stock Award 12.7% 1,952 17,333 18 Feb 2026 Direct
Patrick Plewman DGX Non-Qualifed Stock Option (right to buy) Award 9,009 9,009 18 Feb 2026 Direct
Sam Samad DGX Common Stock Tax liability -6.28% -1,865 27,841 18 Feb 2026 Direct
Sam Samad DGX Common Stock Award 15.4% 3,965 29,706 18 Feb 2026 Direct
Sam Samad DGX Non-Qualifed Stock Option (right to buy) Award 18,303 18,303 18 Feb 2026 Direct
Michael E. Prevoznik DGX Common Stock Tax liability -1.61% -648 39,482 18 Feb 2026 Direct
Michael E. Prevoznik DGX Common Stock Award 5.28% 2,013 40,130 18 Feb 2026 Direct
Michael E. Prevoznik DGX Non-Qualifed Stock Option (right to buy) Award 9,289 9,289 18 Feb 2026 Direct
J. E. Davis DGX Common Stock Tax liability -4.54% -6,184 130,153 18 Feb 2026 Direct
J. E. Davis DGX Common Stock Award 13.2% 15,857 136,337 18 Feb 2026 Direct
J. E. Davis DGX Non-Qualifed Stock Option (right to buy) Award 73,225 73,225 18 Feb 2026 Direct
Catherine T. Doherty DGX Common Stock Tax liability -1.64% -1,161 69,835 18 Feb 2026 Direct
Catherine T. Doherty DGX Common Stock Award 4.3% 2,928 70,996 18 Feb 2026 Direct
Catherine T. Doherty DGX Non-Qualifed Stock Option (right to buy) Award 13,514 13,514 18 Feb 2026 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.