Michael E. Prevoznik - 23 Sep 2025 Form 4 Insider Report for QUEST DIAGNOSTICS INC (DGX)

Reporting relationship: SVP & General Counsel
Issuer ticker: DGX
Reported as of: 23 Sep 2025
Net transaction value: -$5,326,042
SEC form: 4
Accepted by SEC: 25 Sep 2025, 16:39:11 UTC
Prior SEC filing: 19 Mar 2025
Next SEC filing: 30 Sep 2025
Source filing: View source filing
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 25 Sep 2025.

Key facts

This page summarizes Michael E. Prevoznik's Form 4 filing for QUEST DIAGNOSTICS INC (DGX).
6 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 25 Sep 2025, 16:39.

Change

Previous filing in this sequence was filed on 19 Mar 2025.
Current net transaction value: -$5,326,042.

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 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: 25 Sep 2025

Reported non-derivative transactions

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

DGX transaction

Common Stock

Options Exercise

Transaction value: $2,929,788
Shares: +28,288
Change %: +74%
Price: $103.57
Shares after: 66,405
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1

DGX transaction

Common Stock

Sale

Transaction value: $5,293,313
Shares: -28,288
Change %: -43%
Price: $187.12
Shares after: 38,117
Date: 23 Sep 2025
Ownership: Direct
Footnotes: F1, F2

DGX transaction

Common Stock

Options Exercise

Transaction value: $18,125
Shares: +175
Change %: +0.46%
Price: $103.57
Shares after: 38,292
Date: 24 Sep 2025
Ownership: Direct
Footnotes: F1

DGX transaction

Common Stock

Sale

Transaction value: $32,729
Shares: -175
Change %: -0.46%
Price: $187.02
Shares after: 38,117
Date: 24 Sep 2025
Ownership: Direct
Footnotes: F1, F3

DGX holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 5,691
Date: 23 Sep 2025
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)

Options Exercise

Transaction value: $2,929,788
Shares: -28,288
Change %: -99%
Price: $103.57
Shares after: 402
Date: 23 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 28,288
Exercise price: $103.57
Footnotes: F1, F5

DGX transaction Derivative

Non-Qualifed Stock Option (right to buy)

Options Exercise

Transaction value: $18,125
Shares: -175
Change %: -44%
Price: $103.57
Shares after: 227
Date: 24 Sep 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 175
Exercise price: $103.57
Footnotes: F1, 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

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

Footnote F2

This transaction was executed in multiple trades at prices ranging from $187.000 to $187.880. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

Footnote F3

This transaction was executed in multiple trades at prices ranging from $187.000 to $187.350. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

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 vested in three annual installments beginning with the first on February 19, 2019, the second on February 19, 2020 and the final on February 19, 2021.