QUEST DIAGNOSTICS INC — Director's Dealing 2026

Feb 20, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: QUEST DIAGNOSTICS INC (DGX)
CIK: 0001022079
Period of Report: 2026-02-18

Reporting Person: Plewman Patrick (SVP for Diagnostic Services)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-18	Common Stock	A	1952	—	Acquired	17333	Direct
2026-02-18	Common Stock	F	244	$210.01	Disposed	17089	Direct
2026-02-18	Common Stock	F	293	$206.99	Disposed	16796	Direct
2026-02-19	Common Stock	S	958	$204.83	Disposed	15838	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-18	Non-Qualifed Stock Option (right to buy)	$204.96	A	9009	Acquired	2036-02-18	Common Stock (9009)	Direct

Footnotes

F1: Represents an award of restricted stock units.

F2: Disposition of common stock to the issuer solely to cover tax withholding obligations arising from the vesting of restricted stock units.

F3: This exercise and sale reported were effected pursuant to a Rule 10b5-1 sales plan adopted by the reporting person.

F4: The options vest in three equal annual installments beginning on the first annual anniversary of the grant date.