Sam Samad - 18 Feb 2026 Form 4 Insider Report for QUEST DIAGNOSTICS INC (DGX)

Reporting relationship: Executive Vice President & CFO
Issuer ticker: DGX
Reported as of: 18 Feb 2026
Net transaction value: -$375,956
SEC form: 4
Accepted by SEC: 20 Feb 2026, 17:12:39 UTC
Prior SEC filing: 24 Oct 2025
Next SEC filing: 04 Mar 2026
Source filing: View source filing
Reporting owner signature: Sean D. Mersten, Attorney in Fact for Sam Samad

Key filing fact

Sam Samad filed Form 4 for QUEST DIAGNOSTICS INC (DGX) on 20 Feb 2026.

Key facts

This page summarizes Sam Samad's Form 4 filing for QUEST DIAGNOSTICS INC (DGX).
5 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 20 Feb 2026, 17:12.

Change

Previous filing in this sequence was filed on 24 Oct 2025.
Current net transaction value: -$375,956.

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 0001694295 Primary reporting owner

SAMAD SAM

Relationship: Executive Vice President & CFO
Address: 500 PLAZA DRIVE, SECAUCUS
Signature: Sean D. Mersten, Attorney in Fact for Sam Samad
Signature date: 20 Feb 2026

Reported non-derivative transactions

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

DGX transaction

Common Stock

Award

Transaction value: $0
Shares: +3,965
Change %: +15%
Price: $0.000000
Shares after: 29,706
Date: 18 Feb 2026
Ownership: Direct
Footnotes: F1

DGX transaction

Common Stock

Tax liability

Transaction value: $179,559
Shares: -855
Change %: -2.9%
Price: $210.01
Shares after: 28,851
Date: 18 Feb 2026
Ownership: Direct
Footnotes: F2

DGX transaction

Common Stock

Tax liability

Transaction value: $209,060
Shares: -1,010
Change %: -3.5%
Price: $206.99
Shares after: 27,841
Date: 18 Feb 2026
Ownership: Direct
Footnotes: F2

DGX transaction

Common Stock

Award

Transaction value: $12,662
Shares: +69
Change %: +0.25%
Price: $183.51
Shares after: 27,910
Date: 28 Jan 2026
Ownership: Direct
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

DGX transaction Derivative

Non-Qualifed Stock Option (right to buy)

Award

Transaction value: $0
Shares: +18,303
Change %
Price: $0.000000
Shares after: 18,303
Date: 18 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 18,303
Exercise price: $204.96
Footnotes: F4

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Represents an award of restricted stock units.

Footnote F2

Disposition of common stock to the issuer solely to cover tax withholding obligations arising from the vesting of restricted stock units.

Footnote F3

Reflects shares that were acquired pursuant to a dividend reinvestment plan administered by the reporting person's broker and eligible for deferred reporting on Form 5 under Rule 16a-6. The reporting person has chosen to report such transaction early on this Form 4.

Footnote F4

The options vest in three equal annual installments beginning on the first annual anniversary of the grant date.