Michael E. Prevoznik

CIK: 0001222679

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)17 (47.2%)

Position reduction

Option Exercises (M)6 (16.7%)

Derivative conversions

Awards (A)4 (11.1%)

Compensation grants

Other (G, F, J, C, D, …)9 (25.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

DGX

QUEST DIAGNOSTICS INC

Officer

Discretionary Trading P&L

Holdings

Transaction History (36 total)

DGX
QUEST DIAGNOSTICS INC
Aug 28, 2026
Sale(S)
Direct
6.2K shares at avg. $243.63$1.5M
DGX
QUEST DIAGNOSTICS INC
Aug 28, 2026
Exercise(M)
Direct
22.7K shares at avg. $112.17$2.5M
DGX
QUEST DIAGNOSTICS INC
Aug 28, 2026
Sale(S)
Direct
16K shares at avg. $242.88$3.9M
DGX
QUEST DIAGNOSTICS INC
Aug 28, 2026
Gift(G)
Direct
1K shares-
DGX
QUEST DIAGNOSTICS INC
Aug 28, 2026
Sale(S)
Direct
430 shares at avg. $244.51$105K
DGX
QUEST DIAGNOSTICS INC
Mar 5, 2026
Sale(S)
Direct
3.9K shares at avg. $206.21$800K
DGX
QUEST DIAGNOSTICS INC
Mar 4, 2026
Award(A)
Direct
7.2K shares at avg. $204.86$1.5M
DGX
QUEST DIAGNOSTICS INC
Mar 4, 2026
Tax Payment(F)
Direct
3.4K shares at avg. $204.86$687K
DGX
QUEST DIAGNOSTICS INC
Mar 3, 2026
Sale(S)
Direct
526 shares at avg. $207.73$109K
DGX
QUEST DIAGNOSTICS INC
Mar 2, 2026
Tax Payment(F)
Direct
288 shares at avg. $204.86$59K
DGX
QUEST DIAGNOSTICS INC
Feb 19, 2026
Sale(S)
Direct
1.1K shares at avg. $204.83$228K
DGX
QUEST DIAGNOSTICS INC
Feb 18, 2026
Award(A)
Direct
2K shares-
DGX
QUEST DIAGNOSTICS INC
Feb 18, 2026
Tax Payment(F)
Direct
301 shares at avg. $210.01$63K
DGX
QUEST DIAGNOSTICS INC
Feb 18, 2026
Tax Payment(F)
Direct
347 shares at avg. $206.99$72K
DGX
QUEST DIAGNOSTICS INC
Sep 26, 2025
Exercise(M)
Direct
227 shares at avg. $103.57$24K
DGX
QUEST DIAGNOSTICS INC
Sep 26, 2025
Sale(S)
Direct
144 shares at avg. $188.66$27K
DGX
QUEST DIAGNOSTICS INC
Sep 26, 2025
Sale(S)
Direct
83 shares at avg. $187.22$16K
DGX
QUEST DIAGNOSTICS INC
Sep 24, 2025
Sale(S)
Direct
175 shares at avg. $187.02$33K
DGX
QUEST DIAGNOSTICS INC
Sep 24, 2025
Exercise(M)
Direct
175 shares at avg. $103.57$18K
DGX
QUEST DIAGNOSTICS INC
Sep 23, 2025
Sale(S)
Direct
28.3K shares at avg. $187.12$5.3M
DGX
QUEST DIAGNOSTICS INC
Sep 23, 2025
Exercise(M)
Direct
28.3K shares at avg. $103.57$2.9M
DGX
QUEST DIAGNOSTICS INC
Mar 17, 2025
Sale(S)
Direct
4.6K shares at avg. $170.00$789K
DGX
QUEST DIAGNOSTICS INC
Mar 4, 2025
Award(A)
Direct
8.5K shares at avg. $173.74$1.5M
DGX
QUEST DIAGNOSTICS INC
Mar 4, 2025
Tax Payment(F)
Direct
3.9K shares at avg. $173.74$679K
DGX
QUEST DIAGNOSTICS INC
Mar 4, 2025
Sale(S)
Direct
592 shares at avg. $175.79$104K

		Type	Shares	Price		Ownership
Aug 28, 2026	DGX QUEST DIAGNOSTICS INC	Sale(S)	6,237	$243.63	$1,519,505	Direct
Aug 28, 2026	DGX QUEST DIAGNOSTICS INC	Exercise(M)	22,677	$112.17	$2,543,679	Direct
Aug 28, 2026	DGX QUEST DIAGNOSTICS INC	Sale(S)	16,010	$242.88	$3,888,437	Direct
Aug 28, 2026	DGX QUEST DIAGNOSTICS INC	Gift(G)	1,000	-	$0	Direct
Aug 28, 2026	DGX QUEST DIAGNOSTICS INC	Sale(S)	430	$244.51	$105,141	Direct
Mar 5, 2026	DGX QUEST DIAGNOSTICS INC	Sale(S)	3,878	$206.21	$799,682	Direct
Mar 4, 2026	DGX QUEST DIAGNOSTICS INC	Award(A)	7,232	$204.86	$1,481,548	Direct
Mar 4, 2026	DGX QUEST DIAGNOSTICS INC	Tax Payment(F)	3,354	$204.86	$687,100	Direct
Mar 3, 2026	DGX QUEST DIAGNOSTICS INC	Sale(S)	526	$207.73	$109,266	Direct
Mar 2, 2026	DGX QUEST DIAGNOSTICS INC	Tax Payment(F)	288	$204.86	$59,000	Direct
Feb 19, 2026	DGX QUEST DIAGNOSTICS INC	Sale(S)	1,111	$204.83	$227,566	Direct
Feb 18, 2026	DGX QUEST DIAGNOSTICS INC	Award(A)	2,013	-	$0	Direct
Feb 18, 2026	DGX QUEST DIAGNOSTICS INC	Tax Payment(F)	301	$210.01	$63,213	Direct
Feb 18, 2026	DGX QUEST DIAGNOSTICS INC	Tax Payment(F)	347	$206.99	$71,826	Direct
Sep 26, 2025	DGX QUEST DIAGNOSTICS INC	Exercise(M)	227	$103.57	$23,510	Direct
Sep 26, 2025	DGX QUEST DIAGNOSTICS INC	Sale(S)	144	$188.66	$27,167	Direct
Sep 26, 2025	DGX QUEST DIAGNOSTICS INC	Sale(S)	83	$187.22	$15,539	Direct
Sep 24, 2025	DGX QUEST DIAGNOSTICS INC	Sale(S)	175	$187.02	$32,729	Direct
Sep 24, 2025	DGX QUEST DIAGNOSTICS INC	Exercise(M)	175	$103.57	$18,125	Direct
Sep 23, 2025	DGX QUEST DIAGNOSTICS INC	Sale(S)	28,288	$187.12	$5,293,313	Direct
Sep 23, 2025	DGX QUEST DIAGNOSTICS INC	Exercise(M)	28,288	$103.57	$2,929,788	Direct
Mar 17, 2025	DGX QUEST DIAGNOSTICS INC	Sale(S)	4,643	$170.00	$789,310	Direct
Mar 4, 2025	DGX QUEST DIAGNOSTICS INC	Award(A)	8,549	$173.74	$1,485,303	Direct
Mar 4, 2025	DGX QUEST DIAGNOSTICS INC	Tax Payment(F)	3,906	$173.74	$678,628	Direct
Mar 4, 2025	DGX QUEST DIAGNOSTICS INC	Sale(S)	592	$175.79	$104,068	Direct

1-25 of 36 transactions

About PREVOZNIK MICHAEL E

PREVOZNIK MICHAEL E (SEC CIK 0001222679) files insider reports with the SEC as SVP & General Counsel of QUEST DIAGNOSTICS INC (DGX).

Signal8 holds 13 ownership filings by PREVOZNIK MICHAEL E, all Form 4s, filed between Sep 3, 2024 and Aug 31, 2026. Those filings report 36 transactions, from Aug 29, 2024 to Aug 28, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on PREVOZNIK MICHAEL E's filings is in SECAUCUS, NJ.

Recent filings by PREVOZNIK MICHAEL E

Aug 28, 2026: Open-market sale of DGX shares (Form 4, code S).
Aug 28, 2026: Option exercise of DGX shares (Form 4, code M).
Aug 28, 2026: Open-market sale of DGX shares (Form 4, code S).
Aug 28, 2026: Gift of DGX shares (Form 4, code G).
Aug 28, 2026: Open-market sale of DGX shares (Form 4, code S).

Other insiders filing for QUEST DIAGNOSTICS INC (DGX)

PFEIFFER GARY M, Director
CARTER ROBERT B, Director
SAMAD SAM, Executive Vice President & CFO
Gregg Vicky B, Director
KUPPUSAMY KARTHIK, SVP, Clinical Solutions
Lassiter Wright III, Director

How to read Form 4 transaction codes