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Quest Diagnostics

DGX Mostly scheduled
CIK 0001022079 #382 in the set updated 17 Sep 2026
Bought (120 mo)
$0.00
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$483.21M
$23.42M on a plan · $441.66M straight out of an exercise
Sold at will
$18.13M
79 of 287 sales
Net
−$483.21M
−$18.13M against sales at will

By person

32 insiders · 287 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
RUSCKOWSKI STEPHEN H
Director
—
$203.16M (33) scheduled
−$203.16M
389,597
0.3530%
$94.56M
+176.3%
PREVOZNIK MICHAEL E
SVP & General Counsel
—
$63.90M (55) scheduled
−$63.90M
42,337
0.0384%
$10.28M
−11.3%
Doherty Catherine T.
EVP, Regional Businesses
—
$60.76M (56) scheduled
−$60.76M
67,122
0.0608%
$16.29M
−12.5%
Davis J. E.
CEO and President
—
$51.69M (41) scheduled
−$51.69M
122,423
0.1109%
$29.71M
+284.6%
GUINAN MARK
Executive Vice President & CFO
—
$32.16M (8) scheduled
−$32.16M
98,981
0.0897%
$24.02M
+145.4%
Cohen Jon R
SVP & Group Exec. Diag. Sol.
—
$20.22M (13) scheduled
−$20.22M
31,757
0.0288%
$7.71M
−51.9%
Cunningham Everett
SVP, Commercial
—
$12.48M (11) scheduled
−$12.48M
38,311
0.0347%
$9.30M
+12.3%
Deppe Michael J
SVP, Corp. Controller & CAO
—
$6.97M (10) scheduled
−$6.97M
35,196
0.0319%
$8.54M
+45.0%
STANZIONE DANIEL
Director
—
$6.25M (5) scheduled
−$6.25M
28,349
0.0257%
$6.88M
−14.4%
KUPPUSAMY KARTHIK
SVP, Clinical Solutions
—
$5.19M (9) scheduled
−$5.19M
13,557
0.0123%
$3.29M
+59.5%
Plewman Patrick
SVP for Diagnostic Services
—
$4.60M (10) scheduled
−$4.60M
15,293
0.0139%
$3.71M
+64.0%
WILENSKY GAIL R
Director
—
$4.03M (5) scheduled
−$4.03M
20,506
0.0186%
$4.98M
+104.8%
PFEIFFER GARY M
Director
—
$3.90M (7) scheduled
−$3.90M
31,005
0.0281%
$7.53M
+17.1%
RING TIMOTHY M
Director
—
$3.00M (7) scheduled
−$3.00M
31,140
0.0282%
$7.56M
+85.1%
DELANEY MARK E
SVP & Chief Commercial Officer
—
$2.30M (6) scheduled
−$2.30M
10,335
0.0094%
$2.51M
+497.1%
Gregg Vicky B
Director
—
$762.01K (3)
−$762.01K
18,386
0.0167%
$4.46M
+137.7%
BRITELL JENNE K
Director
—
$635.73K (1) scheduled
−$635.73K
14,479
0.0131%
$3.51M
−27.5%
EGLINTON MANNER CARRIE
SVP, Advanced Diagnostics
—
$555.08K (2)
−$555.08K
48,391
0.0438%
$11.75M
+172.6%
LEIDEN JEFFREY M
Director
—
$346.98K (3)
−$346.98K
6,000
0.0054%
$1.46M
−0.4%
ZIEGLER JOHN B
Director
—
$191.02K (1)
−$191.02K
16,557
0.0150%
$4.02M
−10.8%
Klug Robert A
VP, Corporate Controller
—
$119.93K (1)
−$119.93K
6,261
0.0057%
$1.52M
+60.2%
SAMAD SAM
Executive Vice President & CFO
—
—
—
33,478
0.0303%
$8.13M
+113.6%
Mendez Manuel O.
SVP & Chief Commercial Officer
—
—
—
29,045
0.0263%
$7.05M
+17.3%
MAIN TIMOTHY L
Director
—
—
—
22,460
0.0203%
$5.45M
+176.7%
MORRISON DENISE M
Director
—
—
—
11,929
0.0108%
$2.90M
+3,398%
Lassiter Wright III
Director
—
—
—
10,323
0.0094%
$2.51M
+1,730%
Doi Tracey
Director
—
—
—
7,748
0.0070%
$1.88M
+2,083%
Torley Helen
Director
—
—
—
6,260
0.0057%
$1.52M
—
Diaz Luis
Director
—
—
—
5,196
0.0047%
$1.26M
—
GARDNER MARK A
SVP of Molecular Gen & Oncol
—
—
—
4,673
0.0042%
$1.13M
+366.4%
CARTER ROBERT B
Director
—
—
—
3,864
0.0035%
$937.87K
—
WENTWORTH TIMOTHY C
Director
—
—
—
1,358
0.0012%
$329.61K
+135,700%

Individual transactions

69
Insider
Date
Role
Action
Shares
Price
Amount
KUPPUSAMY KARTHIK
4 Mar 2026
SVP, Clinical Solutions
Sell
2,628
$204.86
$538.37K
Gregg Vicky B
25 Nov 2025
Director
Sell
1,250
$191.76
$239.70K
PFEIFFER GARY M
22 Oct 2025
Director
Sell
1,482
$182.40
$270.32K
Plewman Patrick
19 Feb 2025
SVP for Diagnostic Services
Sell
320
$169.71
$54.31K
DELANEY MARK E
5 Feb 2025
SVP & Chief Commercial Officer
Sell
403
$164.30
$66.21K
Gregg Vicky B
5 Feb 2025
Director
Sell
1,250
$164.57
$205.71K
KUPPUSAMY KARTHIK
28 Oct 2024
SVP, Clinical Solutions
Sell
1,775
$156.92
$278.53K
KUPPUSAMY KARTHIK
28 Aug 2024
SVP, Clinical Solutions
Sell
1,990
$153.26
$304.99K
DELANEY MARK E
24 Jul 2024
SVP & Chief Commercial Officer
Sell
420
$143.08
$60.09K
Gregg Vicky B
23 Feb 2024
Director
Sell
2,500
$126.64
$316.60K
Doherty Catherine T.
7 Mar 2023
SVP, Regional Businesses
Sell
5,307
$140.55
$745.90K
PREVOZNIK MICHAEL E
7 Mar 2023
SVP & General Counsel
Sell
4,754
$140.55
$668.17K
Doherty Catherine T.
3 Mar 2023
SVP, Regional Businesses
Sell
717
$140.63
$100.83K
PREVOZNIK MICHAEL E
2 Mar 2023
SVP & General Counsel
Sell
593
$138.54
$82.15K
Doherty Catherine T.
24 Feb 2023
SVP, Regional Businesses
Sell
1,690
$141.42
$239.00K
PREVOZNIK MICHAEL E
24 Feb 2023
SVP & General Counsel
Sell
1,415
$141.42
$200.11K
Doherty Catherine T.
8 Mar 2022
SVP, Group Exec. Clin. Fran.
Sell
7,032
$135.21
$950.80K
PREVOZNIK MICHAEL E
8 Mar 2022
SVP & General Counsel
Sell
6,228
$135.21
$842.09K
PREVOZNIK MICHAEL E
28 Feb 2022
SVP & General Counsel
Sell
661
$130.00
$85.93K
PREVOZNIK MICHAEL E
24 Feb 2022
SVP & General Counsel
Sell
1,669
$126.26
$210.73K
Doherty Catherine T.
24 Feb 2022
SVP, Group Exec. Clin. Fran.
Sell
2,750
$126.26
$347.22K
Doherty Catherine T.
7 May 2021
SVP, Group Exec. Clin. Fran.
Sell
8,536
$139.96
$1.19M
PREVOZNIK MICHAEL E
10 Mar 2021
SVP & General Counsel
Sell
5,574
$120.47
$671.50K
PREVOZNIK MICHAEL E
25 Feb 2021
SVP & General Counsel
Sell
801
$115.49
$92.51K
PREVOZNIK MICHAEL E
24 Feb 2021
SVP & General Counsel
Sell
750
$116.95
$87.71K
PREVOZNIK MICHAEL E
24 Feb 2021
SVP & General Counsel
Sell
438
$116.95
$51.22K
STANZIONE DANIEL
23 Nov 2020
Director
Sell
2,300
$127.45
$293.14K
STANZIONE DANIEL
23 Nov 2020
Director
Sell
3,302
$126.46
$417.58K
STANZIONE DANIEL
23 Nov 2020
Director
Sell
5,621
$125.73
$706.74K
EGLINTON MANNER CARRIE
27 Apr 2020
SVP, Advanced Diagnostics
Sell
2,500
$110.00
$275.00K
EGLINTON MANNER CARRIE
27 Apr 2020
SVP, Advanced Diagnostics
Sell
2,500
$112.03
$280.08K
Davis J. E.
16 Mar 2020
EVP, General Diagnostics
Sell
500
$90.15
$45.07K
Davis J. E.
16 Mar 2020
EVP, General Diagnostics
Sell
421
$88.53
$37.27K
Davis J. E.
16 Mar 2020
EVP, General Diagnostics
Sell
1,307
$87.81
$114.77K
Davis J. E.
16 Mar 2020
EVP, General Diagnostics
Sell
1,085
$86.65
$94.02K
Davis J. E.
16 Mar 2020
EVP, General Diagnostics
Sell
200
$85.59
$17.12K
Doherty Catherine T.
11 Mar 2020
SVP, Group Exec. Clin. Fran.
Sell
2,501
$104.25
$260.73K
PREVOZNIK MICHAEL E
11 Mar 2020
SVP & General Counsel
Sell
2,175
$104.25
$226.74K
Davis J. E.
27 Feb 2020
EVP, General Diagnostics
Sell
1,100
$109.02
$119.92K
Doherty Catherine T.
27 Feb 2020
SVP, Group Exec. Clin. Fran.
Sell
789
$109.02
$86.02K
PREVOZNIK MICHAEL E
27 Feb 2020
SVP & General Counsel
Sell
690
$109.02
$75.22K
Davis J. E.
26 Feb 2020
EVP, General Diagnostics
Sell
510
$111.09
$56.66K
Doherty Catherine T.
26 Feb 2020
SVP, Group Exec. Clin. Fran.
Sell
368
$111.09
$40.88K
PREVOZNIK MICHAEL E
26 Feb 2020
SVP & General Counsel
Sell
321
$111.09
$35.66K
Doherty Catherine T.
25 Feb 2020
SVP, Group Exec. Clin. Fran.
Sell
405
$112.73
$45.66K
Davis J. E.
25 Feb 2020
EVP, General Diagnostics
Sell
598
$112.73
$67.41K
Davis J. E.
8 Apr 2019
EVP, General Diagnostics
Sell
2,100
$90.70
$190.48K
Davis J. E.
8 Apr 2019
EVP, General Diagnostics
Sell
5,900
$90.15
$531.86K
Cunningham Everett
4 Mar 2019
SVP, Commercial
Sell
3,892
$86.81
$337.86K
PREVOZNIK MICHAEL E
4 Mar 2019
SVP & General Counsel
Sell
3,373
$86.81
$292.81K
Cunningham Everett
27 Feb 2019
SVP, Commercial
Sell
1,144
$86.51
$98.97K
PREVOZNIK MICHAEL E
27 Feb 2019
SVP & General Counsel
Sell
1,048
$86.51
$90.66K
Cunningham Everett
26 Feb 2019
SVP, Commercial
Sell
352
$87.06
$30.65K
PREVOZNIK MICHAEL E
26 Feb 2019
SVP & General Counsel
Sell
364
$87.06
$31.69K
Cunningham Everett
25 Feb 2019
SVP, Commercial
Sell
326
$88.23
$28.76K
PREVOZNIK MICHAEL E
25 Feb 2019
SVP & General Counsel
Sell
336
$88.23
$29.65K
LEIDEN JEFFREY M
29 May 2018
Director
Sell
1,644
$105.61
$173.62K
Doherty Catherine T.
5 Mar 2018
SVP, Group Exec. Clin. Fran.
Sell
5,556
$101.00
$561.16K
Davis J. E.
5 Mar 2018
EVP, General Diagnostics
Sell
5,122
$101.00
$517.32K
PREVOZNIK MICHAEL E
5 Mar 2018
SVP & General Counsel
Sell
4,128
$101.00
$416.93K
Davis J. E.
28 Feb 2018
EVP, General Diagnostics
Sell
648
$104.99
$68.03K
Doherty Catherine T.
28 Feb 2018
SVP, Group Exec. Clin. Fran.
Sell
572
$104.99
$60.05K
PREVOZNIK MICHAEL E
28 Feb 2018
SVP & General Counsel
Sell
496
$104.99
$52.08K
Davis J. E.
27 Feb 2018
EVP, General Diagnostics
Sell
1,150
$104.10
$119.72K
Doherty Catherine T.
27 Feb 2018
SVP, Group Exec. Clin. Fran.
Sell
1,248
$104.10
$129.92K
PREVOZNIK MICHAEL E
27 Feb 2018
SVP & General Counsel
Sell
927
$104.10
$96.50K
Davis J. E.
26 Feb 2018
EVP, General Diagnostics
Sell
494
$102.74
$50.75K
Doherty Catherine T.
26 Feb 2018
SVP, Group Exec. Clin. Fran.
Sell
397
$102.74
$40.79K
Klug Robert A
26 Feb 2018
VP, Corporate Controller
Sell
1,157
$103.66
$119.93K
Showing 250 of 287 transactions. The figures above use every one of them.

What was left out

Form 4 filings counted 645
Amendments (4/A) skipped 2
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 49
Sales straight out of an exercise 159
Sales at will 79
Transactions with no price 0
Shares from compensation/vesting 5,959,033
Sales filed before the plan box existed 69
History held since 5 Oct 2016