{"url_path":"/sec/dgx/8-k/2026-05-08/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-08","source_url":"https://www.sec.gov/Archives/edgar/data/1022079/0001104659-26-057938-index.html","accession_number":"0001104659-26-057938","cik":"0001022079","ticker":"DGX","issuer_name":"QUEST DIAGNOSTICS INC","edgar_url":"https://www.sec.gov/Archives/edgar/data/1022079/0001104659-26-057938-index.html","primary_entity_key":"0001022079","primary_entity_name":"QUEST DIAGNOSTICS INC"},"word_count":301,"has_tables":true,"body_markdown":"false\n0001022079\n\n0001022079\n\n2026-05-06\n2026-05-06\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n \n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWASHINGTON, DC 20549\n\n \n\n \n\n**FORM 8-K**\n\n \n\n \n\n**CURRENT REPORT PURSUANT TO SECTION 13\nOR 15(d) OF**\n\n**THE SECURITIES EXCHANGE ACT OF 1934**\n\n \n\n**Date of Report** (Date of Earliest Event Reported)**:\nMay 6, 2026**\n\n \n\n \n\n**Quest Diagnostics Incorporated**\n\n(Exact Name of Registrant as Specified in Its Charter)\n\n \n\n \n\n**Delaware**\n\n(State or other jurisdiction of incorporation)\n\n \n\n**001-12215**\n**16-1387862**\n\n(Commission File Number)\n(I.R.S. Employer Identification No.)\n\n \n \n\n**500 Plaza Drive**\n\n**Secaucus, NJ**\n\n**07094**\n\n(Address of principal executive offices)\n(Zip Code)\n\n \n \n\n**(973) 520-2700**\n\n(Registrant's telephone number, including area code)\n\n \n\n \n\nCheck the appropriate box below if the Form 8-K filing is intended\nto simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2.\nbelow):\n\n \n\n¨ Written communications\npursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n¨ Soliciting material\npursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n¨ Pre-commencement\ncommunications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n¨ Pre-commencement communications\npursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\nSecurities registered pursuant to Section 12(b) of the Act:\n\n \n\nTitle of each class\nTrading Symbol(s)\nName of each exchange on which registered\n\nCommon Stock, $0.01 Par Value\nDGX\nNew York Stock Exchange\n\n \n\nIndicate by check mark whether the registrant is an emerging growth\ncompany as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities\nExchange Act of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging growth company   ¨\n\n \n\nIf an emerging growth company, indicate by check mark if the registrant\nhas elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant\nto Section 13(a) of the Exchange Act.       ¨"}