QUEST DIAGNOSTICS INC (DGX) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-07-22 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: QUEST DIAGNOSTICS INC (DGX) CIK: 0001022079 --- Reporting Owner --- Name: DELANEY MARK E CIK: 0001955265 Role: Officer (SVP & Chief Commercial Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-07-22 | Code: L Shares: +34 | Price: $206.81 Total Value: $7,031.44 Shares Owned After: 11,935 | Ownership: D (Direct) Footnotes: [F1] Represents an award of restricted share units. [F2] 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. --- Footnotes (Complete Index) --- F1: Represents an award of restricted share units. F2: 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. --- Signature --- /s/ Sean D. Mersten, Attorney in Fact for Mark E. Delaney (2026-07-27)