Mark E. Delaney - 28 Jul 2026 Form 4 Insider Report for QUEST DIAGNOSTICS INC (DGX)

Reporting relationship: SVP & Chief Commercial Officer
Issuer ticker: DGX
Reported as of: 28 Jul 2026
Net transaction value: -$376,288
SEC form: 4
Accepted by SEC: 29 Jul 2026, 17:04:48 UTC
Prior SEC filing: 27 Jul 2026
Source filing: View source filing
Reporting owner signature: Sean D. Mersten, Attorney in Fact for Mark E. Delaney

Key filing fact

Mark E. Delaney filed Form 4 for QUEST DIAGNOSTICS INC (DGX) on 29 Jul 2026.

Key facts

This page summarizes Mark E. Delaney's Form 4 filing for QUEST DIAGNOSTICS INC (DGX).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 29 Jul 2026, 17:04.

Change

Previous filing in this sequence was filed on 27 Jul 2026.
Current net transaction value: -$376,288.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001955265 Primary reporting owner

DELANEY MARK E

Relationship: SVP & Chief Commercial Officer
Address: 500 PLAZA DRIVE, C/O QUEST DIAGNOSTICS INC, SECAUCUS
Signature: Sean D. Mersten, Attorney in Fact for Mark E. Delaney
Signature date: 29 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

DGX transaction

Common Stock

Sale

Transaction value: $376,288
Shares: -1,600
Change %: -13%
Price: $235.18
Shares after: 10,335
Date: 28 Jul 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 1 footnote

Footnote F1

This sale reported was effected pursuant to a Rule 10b5-1 sales plan adopted by the reporting person.