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Quest Diagnostics

DGX Mostly scheduled
CIK 0001022079 #382 in the set updated 17 Sep 2026
Bought (12 mo)
$0.00
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$42.63M
$10.45M on a plan · $31.14M straight out of an exercise
Sold at will
$1.05M
3 of 34 sales
Net
−$42.63M
−$1.05M against sales at will

By person

19 insiders · 34 transactions
23.7×

James E. Davis holds 23.7 times base salary in stock. $29.71M of shares against $1.25M in salary for 2025.

Salary from the company's own proxy. The shares are what James E. Davis last reported holding, valued at $242.72, the price Common Stock was last bought or sold at on the open market here, on 1 Sep 2026.

Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Davis J. E.
CEO and President
$17.08M (6) scheduled
−$17.08M
122,423
0.1109%
$29.71M
−2.8%
PREVOZNIK MICHAEL E
SVP & General Counsel
$12.02M (10) scheduled
−$12.02M
42,337
0.0384%
$10.28M
−4.3%
Doherty Catherine T.
EVP, Regional Businesses
$6.96M (8) scheduled
−$6.96M
67,122
0.0608%
$16.29M
−1.9%
KUPPUSAMY KARTHIK
SVP, Clinical Solutions
$2.17M (2) scheduled
−$2.17M
13,557
0.0123%
$3.29M
+15.6%
Plewman Patrick
SVP for Diagnostic Services
$2.03M (4) scheduled
−$2.03M
15,293
0.0139%
$3.71M
−6.3%
DELANEY MARK E
SVP & Chief Commercial Officer
$1.86M (2) scheduled
−$1.86M
10,335
0.0094%
$2.51M
+105.9%
PFEIFFER GARY M
Director
$270.32K (1)
−$270.32K
31,005
0.0281%
$7.53M
+2.9%
Gregg Vicky B
Director
$239.70K (1)
−$239.70K
18,386
0.0167%
$4.46M
+2.3%
Deppe Michael J
SVP, Corp. Controller & CAO
35,196
0.0319%
$8.54M
+0.7%
SAMAD SAM
Executive Vice President & CFO
33,478
0.0303%
$8.13M
+91.7%
RING TIMOTHY M
Director
31,140
0.0282%
$7.56M
+8.1%
MAIN TIMOTHY L
Director
22,460
0.0203%
$5.45M
+11.8%
MORRISON DENISE M
Director
11,929
0.0108%
$2.90M
+24.5%
Lassiter Wright III
Director
10,323
0.0094%
$2.51M
+29.8%
Doi Tracey
Director
7,748
0.0070%
$1.88M
+43.4%
Diaz Luis
Director
5,196
0.0047%
$1.26M
+82.3%
GARDNER MARK A
SVP of Molecular Gen & Oncol
4,673
0.0042%
$1.13M
−2.5%
CARTER ROBERT B
Director
3,864
0.0035%
$937.87K
+160.7%
WENTWORTH TIMOTHY C
Director
1,358
0.0012%
$329.61K
+135,700%
Insider
Date
Role
Action
Shares
Price
Amount
PREVOZNIK MICHAEL E
28 Aug 2026
SVP & General Counsel
Sold after exercise
430
$244.51
$105.14K
PREVOZNIK MICHAEL E
28 Aug 2026
SVP & General Counsel
Sold after exercise
6,237
$243.63
$1.52M
PREVOZNIK MICHAEL E
28 Aug 2026
SVP & General Counsel
Sold after exercise
16,010
$242.88
$3.89M
KUPPUSAMY KARTHIK
4 Jun 2026
SVP, Clinical Solutions
Sold after exercise
8,147
$200.00
$1.63M
Doherty Catherine T.
13 Feb 2026
EVP, Regional Businesses
Sold after exercise
351
$209.10
$73.39K
Doherty Catherine T.
13 Feb 2026
EVP, Regional Businesses
Sold after exercise
1,619
$208.21
$337.09K
Doherty Catherine T.
13 Feb 2026
EVP, Regional Businesses
Sold after exercise
3,500
$207.08
$724.79K
Doherty Catherine T.
13 Feb 2026
EVP, Regional Businesses
Sold after exercise
10,122
$206.37
$2.09M
Doherty Catherine T.
13 Feb 2026
EVP, Regional Businesses
Sold after exercise
10,573
$205.21
$2.17M
Plewman Patrick
10 Feb 2026
SVP for Diagnostic Services
Sold after exercise
5,662
$204.00
$1.16M
Davis J. E.
25 Nov 2025
CEO and President
Sold after exercise
4,747
$192.97
$916.04K
Davis J. E.
25 Nov 2025
CEO and President
Sold after exercise
41,004
$192.27
$7.88M
Davis J. E.
25 Nov 2025
CEO and President
Sold after exercise
9,342
$191.59
$1.79M
DELANEY MARK E
18 Nov 2025
SVP & Chief Commercial Officer
Sold after exercise
7,946
$187.35
$1.49M
PREVOZNIK MICHAEL E
26 Sep 2025
SVP & General Counsel
Sold after exercise
144
$188.66
$27.17K
PREVOZNIK MICHAEL E
26 Sep 2025
SVP & General Counsel
Sold after exercise
83
$187.22
$15.54K
PREVOZNIK MICHAEL E
24 Sep 2025
SVP & General Counsel
Sold after exercise
175
$187.02
$32.73K
PREVOZNIK MICHAEL E
23 Sep 2025
SVP & General Counsel
Sold after exercise
28,288
$187.12
$5.29M

What was left out

Form 4 filings counted 77
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 13
Sales straight out of an exercise 18
Sales at will 3
Transactions with no price 0
Shares from compensation/vesting 375,487
History held since 5 Oct 2016