Quest Diagnostics Inc

Item 2.02. Results of Operations and Financial Condition

On July 23, 2026, Quest Diagnostics Incorporated (the "Company") issued a press release announcing, among other things, its results for the quarter ended June 30, 2026. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated by reference herein. Item 9.01. Financial Statements and Exhibits d. Exhibit 99.1 Press release of Quest Diagnostics Incorporated dated July 23, 2026, announcing, among other things, its results for the quarter ended June 30, 2026.

104 The cover page from this current report on Form 8-K, formatted in Inline XBRL.