Michael E. Prevoznik - 18 Feb 2026 Form 4 Insider Report for QUEST DIAGNOSTICS INC (DGX)

Role: SVP & General Counsel
Issuer symbol: DGX
Report date: 18 Feb 2026
Net transaction value: -$362,605
Form type: 4
Accepted by SEC: 20 Feb 2026, 17:12:09 UTC
Previous filing: 30 Sep 2025
Next filing: 04 Mar 2026
SEC filing: View on sec.gov
Reporting owner signature: Sean D. Mersten, Attorney in Fact for Michael E. Prevoznik

Key filing fact

Michael E. Prevoznik filed Form 4 for QUEST DIAGNOSTICS INC (DGX) on 20 Feb 2026.

Key facts

This page summarizes Michael E. Prevoznik'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 30 Sep 2025.
Current net transaction value: -$362,605.

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.

See Original Filing

Reporting Owners (1)

CIK 0001222679 Primary reporting owner

PREVOZNIK MICHAEL E

Relationship: SVP & General Counsel
Address: 500 PLAZA DRIVE, SECAUCUS
Signature: Sean D. Mersten, Attorney in Fact for Michael E. Prevoznik
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: +2,013
Change %: +5.3%
Price: $0.000000
Shares after: 40,130
Date: 18 Feb 2026
Ownership: Direct
Footnotes: F1

DGX transaction

Common Stock

Tax liability

Transaction value: $63,213
Shares: -301
Change %: -0.75%
Price: $210.01
Shares after: 39,829
Date: 18 Feb 2026
Ownership: Direct
Footnotes: F2

DGX transaction

Common Stock

Tax liability

Transaction value: $71,826
Shares: -347
Change %: -0.87%
Price: $206.99
Shares after: 39,482
Date: 18 Feb 2026
Ownership: Direct
Footnotes: F2

DGX transaction

Common Stock

Sale

Transaction value: $227,566
Shares: -1,111
Change %: -2.8%
Price: $204.83
Shares after: 38,371
Date: 19 Feb 2026
Ownership: Direct
Footnotes: F3

DGX holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,738
Date: 18 Feb 2026
Ownership: 401(k)/SDCP
Footnotes: F4

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: +9,289
Change %
Price: $0.000000
Shares after: 9,289
Date: 18 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9,289
Exercise price: $204.96
Footnotes: F5

^* 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 5 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

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

Footnote F4

These underlying shares were acquired on a periodic basis by the trustee of the Company's tax qualified Profit Sharing (401(k)) and/or Supplemental Deferred Compensation Plan. The information was obtained from the plan administrator as of a current date. The number of shares is based on the account balance of the Company stock fund under each Plan (which includes some money market instruments) divided by the market price of the Company's stock as of that date.

Footnote F5

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