{"url_path":"/sec/dgx/10-k/2026/item-15","section_key":"item-15","section_title":"Item 15 Exhibits, Financial Statement Schedules","topic":"sec","document":{"doc_type":"10-K","doc_date":"2026-02-26","source_url":"https://www.sec.gov/Archives/edgar/data/1022079/0001022079-26-000015-index.html","accession_number":"0001022079-26-000015","cik":"0001022079","ticker":"DGX","issuer_name":"QUEST DIAGNOSTICS INC","edgar_url":"https://www.sec.gov/Archives/edgar/data/1022079/0001022079-26-000015-index.html","primary_entity_key":"0001022079","primary_entity_name":"QUEST DIAGNOSTICS INC"},"word_count":3383,"has_tables":true,"body_markdown":"Item 15. Exhibits, Financial Statement Schedules\n\n(a)Documents filed as part of this Report.\n\n1.Index to financial statements and supplementary data filed as part of this Report.\n\nItemPage\n\nFinancial Statements\n\n[Report of Independent Registered Public Accounting Firm (PCAOB ID](#ie5c08f396cec4eb58b332bd385d844fc_157)238[)](#ie5c08f396cec4eb58b332bd385d844fc_157)\n\nF- [1](#ie5c08f396cec4eb58b332bd385d844fc_157)\n\n[Consolidated Balance Sheets](#ie5c08f396cec4eb58b332bd385d844fc_163)\n\nF- [3](#ie5c08f396cec4eb58b332bd385d844fc_163)\n\n[Consolidated Statements of Operations](#ie5c08f396cec4eb58b332bd385d844fc_166)\n\nF- [4](#ie5c08f396cec4eb58b332bd385d844fc_166)\n\n[Consolidated Statements of Comprehensive Income](#ie5c08f396cec4eb58b332bd385d844fc_169)\n\nF- [5](#ie5c08f396cec4eb58b332bd385d844fc_169)\n\n[Consolidated Statements of Cash Flows](#ie5c08f396cec4eb58b332bd385d844fc_172)\n\nF- [6](#ie5c08f396cec4eb58b332bd385d844fc_172)\n\n[Consolidated Statements of Stockholders' Equity](#ie5c08f396cec4eb58b332bd385d844fc_175)\n\nF- [7](#ie5c08f396cec4eb58b332bd385d844fc_175)\n\n[Notes to Consolidated Financial Statements](#ie5c08f396cec4eb58b332bd385d844fc_178)\n\nF- [8](#ie5c08f396cec4eb58b332bd385d844fc_178)\n\n2. Financial Statement Schedules\n\nNone.\n\n3. Exhibits\n\nExhibit\n\nNumber\nDescription\n\n3.1\n[Restated Certificate of Incorporation of the Company, as amended August 14, 2024 (filed as an Exhibit to the Company's quarterly report on Form 10-Q for the quarter ended September 30, 2024 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207924000190/dgx093024ex31.htm)\n\n3.2\n[Amended and Restated By-Laws of the Company, as amended August 14, 2024 (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: August 14, 2024) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000110465924090867/tm2421254d4_ex3-1.htm)\n\n4.1\n[Indenture dated as of June 27, 2001, among the Company, the Subsidiary Guarantors, and The Bank of New York (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: June 27, 2001) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787101500290/ex4-3_062801.txt)\n\n4.2\n[First Supplemental Indenture, dated as of June 27, 2001, among the Company, the Initial Subsidiary Guarantors, and The Bank of New York (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: June 27, 2001) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787101500290/ex4-4_062801.txt)\n\n4.3\n[Second Supplemental Indenture, dated as of November 26, 2001, among the Company, the Subsidiary Guarantors, and The Bank of New York (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: November 26, 2001) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787101501115/ex4-1_112601.txt)\n\n4.4\n[Third Supplemental Indenture, dated as of April 4, 2002, among the Company, the Additional Subsidiary Guarantors, and The Bank of New York (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: April 1, 2002) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787102000692/ex4-1_040902.txt)\n\n4.5\n[Fourth Supplemental Indenture dated as of March 19, 2003, among Unilab Corporation (f/k/a Quest Diagnostics Newco Incorporated), the Company, The Bank of New York, and the Additional Subsidiary Guarantors (filed as an Exhibit to the Company's quarterly report on Form 10-Q for the quarter ended March 31, 2003 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000095011703001797/ex10-1.txt)\n\n50\n\n[Table](#ie5c08f396cec4eb58b332bd385d844fc_7)[of](#ie5c08f396cec4eb58b332bd385d844fc_7)[Contents](#ie5c08f396cec4eb58b332bd385d844fc_7)\n\n4.6\n[Fifth Supplemental Indenture dated as of April 16, 2004, among Unilab Acquisition Corporation (d/b/a FNA Clinics of America), the Company, The Bank of New York, and the Additional Subsidiary Guarantors (filed as an Exhibit to the Company's quarterly report on Form 10-Q for the quarter ended March 31, 2004 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000095011704001657/ex10-1.txt)\n\n4.7\n[Sixth Supplemental Indenture dated as of October 31, 2005, among the Company, The Bank of New York, and the Subsidiary Guarantors (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: October 31, 2005) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000095011705004157/ex4-7.htm)\n\n4.8\n[Seventh Supplemental Indenture dated as of November 21, 2005, among the Company, The Bank of New York, and the Additional Subsidiary Guarantors (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: November 21, 2005) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000095011705004480/ex4-1.htm)\n\n4.9\n[Eighth Supplemental Indenture dated as of July 31, 2006, among the Company, The Bank of New York, and the Additional Subsidiary Guarantors (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: July 31, 2006) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000095011706003285/ex4-1.htm)\n\n4.10\n[Ninth Supplemental Indenture dated as of September 30, 2006, among the Company, The Bank of New York, and the Additional Subsidiary Guarantors (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: September 30, 2006) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000095011706004130/ex4-1.htm)\n\n4.11\n[Tenth Supplemental Indenture dated as of June 22, 2007, among the Company, The Bank of New York, and the Subsidiary Guarantors (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: June 19, 2007) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000093041307005477/c49146_ex4-11.htm)\n\n4.12\n[Eleventh Supplemental Indenture dated as of June 22, 2007, among the Company, The Bank of New York, and the Additional Subsidiary Guarantors (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: June 19, 2007) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000093041307005477/c49146_ex4-14.htm)\n\n4.13\n[Twelfth Supplemental Indenture dated as of June 25, 2007, among the Company, The Bank of New York, and the Additional Subsidiary Guarantors (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: June 19, 2007) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000093041307005477/c49146_ex4-15.htm)\n\n4.14\n[Thirteenth Supplemental Indenture dated as of November 17, 2009, among the Company, The Bank of New York Mellon, and the Subsidiary Guarantors (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: November 17, 2009) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000093041309005838/c59427_ex4-14.htm)\n\n4.15\n[Fourteenth Supplemental Indenture dated as of March 24, 2011, among the Company, The Bank of New York Mellon, and the Subsidiary Guarantors (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: March 21, 2011) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000093041311002247/c64911_ex4-15.htm)\n\n4.16\n[Fifteenth Supplemental Indenture dated as of November 30, 2011, among the Company, The Bank of New York Mellon, and the Additional Subsidiary Guarantors (filed as an Exhibit to the Company's 2011 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000093041312000949/c68209_ex4-24.htm)\n\n4.17\n[Sixteenth Supplemental Indenture dated as of March 17, 2014, between the Company and The Bank of New York Mellon (filed as an Exhibit to the Company's current report on Form 8-K (Date of Report: March 12, 2014) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787114000160/ss206544_ex0417.htm)\n\n51\n\n[Table](#ie5c08f396cec4eb58b332bd385d844fc_7)[of](#ie5c08f396cec4eb58b332bd385d844fc_7)[Contents](#ie5c08f396cec4eb58b332bd385d844fc_7)\n\n4.18\n[Seventeenth Supplemental Indenture dated as of March 10, 2015, between the Company and The Bank of New York Mellon (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: March 5, 2015) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787115000168/ss419933_ex0418.htm)\n\n4.19\n[Eighteenth Supplemental Indenture dated as of May 26, 2016, between the Company and The Bank of New York Mellon (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: May 23, 2016) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787116001220/ss1485098_ex0419.htm)\n\n4.20\n[Nineteenth Supplemental Indenture dated as of March 12 2019, between the Company and The Bank of New York Mellon (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: March 7, 2019) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787119000202/ss128814_ex0402.htm)\n\n4.21\n[Twentieth Supplemental Indenture dated as of December 16, 2019, between the Company and The Bank of New York Mellon (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: December 16, 2019) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787119000973/ss160605_ex0402.htm)\n\n4.22\n[Twenty-First Supplemental Indenture dated as of May 13, 2020, between the Company and The Bank of New York Mellon (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: May 11, 2020) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787120000458/ss173511_ex0402.htm)\n\n4.23\n[Twenty-Second Supplemental Indenture dated as of November 1, 2023, between the Company and The Bank of New York Mellon (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: October 30, 2023) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207923000172/dgx10302023ex42.htm)\n\n4.24\n[Twenty-Third Supplemental Indenture dated as of August 19, 2024, between the Company and The Bank of New York Mellon (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: August 14, 2024) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000110465924090867/tm2421254d4_ex4-2.htm)\n\n4.25\n[Description of Securities (filed as an Exhibit to the Company’s 2024 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000044/dgx12312024ex425.htm)\n\n10.1‡*\n[Amended and Restated Employee Stock Purchase Plan, as amended, effective as of November 6, 2025](dgx12312025ex101.htm)\n\n10.2‡\n[Amended and Restated Quest Diagnostics Incorporated Employee Long-Term Incentive Plan as amended March 31, 2023 (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended June 30, 2023 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207923000136/dgx06302023ex101.htm)\n\n10.3‡\n[Form of Quest Diagnostics Incorporated 2025 Equity Award Agreement (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended March 31, 2025 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000120/dgx03312025ex101.htm)\n\n10.4‡\n[Quest Diagnostics Supplemental Deferred Compensation Plan (Post 2004) as amended and restated December 1, 2020 (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ending September 30, 2021 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/0001022079/000102207921000144/dgx09302021ex102.htm)\n\n10.5‡\n[Amendment No. 1 to Quest Diagnostics Supplemental Deferred Compensation Plan (Post 2004) (as amended and restated December 1, 2020), effective as of November 29, 2022 (filed as an Exhibit to the Company’s 2022 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207923000018/dgx12312022ex105.htm)\n\n10.6‡\n[Amendment No. 2 to Quest Diagnostics Supplemental Deferred Compensation Plan (Post - 2004) (as amended and restated December 1, 2020), effective as of December 9, 2024 (filed as an Exhibit to the Company's 2024 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000044/dgx12312024ex106.htm)\n\n10.7‡*\n[Amendment No. 3 to Quest Diagnostics Supplemental Deferred Compensation Plan (Post – 2004) (amended and restated December 1, 2004), effective January 1, 2026](dgx12312025ex107.htm)\n\n52\n\n[Table](#ie5c08f396cec4eb58b332bd385d844fc_7)[of](#ie5c08f396cec4eb58b332bd385d844fc_7)[Contents](#ie5c08f396cec4eb58b332bd385d844fc_7)\n\n10.8‡\n[Quest Diagnostics Supplemental Deferred Compensation Plan (Pre-2005) amended and restated December 1, 2020](https://www.sec.gov/Archives/edgar/data/1022079/000102207921000029/dgx12312020ex105.htm) (filed as an Exhibit to the Co[mpany’s 2020 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207921000029/dgx12312020ex105.htm)\n\n10.9‡\n[Quest Diagnostics Incorporated Senior Management Incentive Plan, as amended and restated February 18, 2019 (filed as an Exhibit to the Company's quarterly report on Form 10-Q for the quarter ended March 31, 2019 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207919000118/dgx03312019ex102.htm)\n\n10.10‡\n[Amended and Restated Quest Diagnostics Incorporated Executive Officer Severance Plan, as amended November 12, 2024 (filed as an Exhibit to the Company's 2024 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000044/dgx12312024ex109.htm)\n\n10.11‡\n[The Quest Diagnostics Profit Sharing Plan (Amendment and Restatement, effective as of September 14, 2023) (filed as an Exhibit to the Company’s 2023 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207924000041/dgx12312023ex109.htm)\n\n10.12‡\n[Amendment No. 1 to The Quest Diagnostics Profit Sharing Plan, dated as of December 9, 2024 (filed as an Exhibit to the Company's 2024 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000044/dgx12312024ex1011.htm)\n\n10.13‡*\n[Amendment No. 2 to the Quest Diagnostics Profit Sharing Plan, dated January 20, 2026](dgx12312025ex1013.htm)\n\n10.14‡\n[Quest Diagnostics Incorporated Amended and Restated Deferred Compensation Plan for Directors as amended effective February 18, 2020 (filed as an Exhibit to the Company’s 2019 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207920000017/dgx12312019ex1012.htm)\n\n10.15‡\n[Amended and Restated Quest Diagnostics Incorporated Long-Term Incentive Plan for Non-Employee Directors (as amended November 18, 2020) (filed as an Exhibit to the Company’s 2020 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/0001022079/000102207921000029/dgx12312020ex1017.htm)\n\n10.16‡\n[Form of Quest Diagnostics Incorporated Non-Employee Director Equity Award Grant Certificate (filed as an Exhibit to the Company’s 2015 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207916000195/dgx12312015ex1015.htm)\n\n10.17‡\n[Aircraft Time Sharing Agreement dated as of February 16, 2023 between Quest Diagnostics Clinical Laboratories, Inc. and James E. Davis (filed as an Exhibit to the Company's 2022 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207923000018/dgx12312022ex1020.htm)\n\n10.18†\n[Equity Purchase Agreement, dated as of July 2, 2024, by and among the Company and 1000923563 Ontario Inc., a subsidiary of the Company, and Borealis Infrastructure Corporation, a corporation incorporated under the federal laws of Canada, BPC Health Trust, a trust organized under the laws of the Province of Ontario, LifeLabs Inc, a corporation incorporated under the federal laws of Canada, and BPC Lab Finance LP, an Ontario limited partnership (filed as an Exhibit to the Company's quarterly report on Form 10-Q for the quarter ending June 30, 2024 and incorporated herein by reference)(Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207924000156/dgx06302024ex101.htm)\n\n19.1\n[Quest Diagnostics Incorporated Policy on Securities Trading (filed as an Exhibit to the Company's 2024 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000044/dgx12312024ex191.htm)\n\n21.1*\n[Subsidiaries of Quest Diagnostics Incorporated](dgx12312025ex211.htm)\n\n22*\n[Subsidiary Guarantors of Securities](dgx12312025ex22.htm)\n\n23.1*\n[Consent of PricewaterhouseCoopers LLP](dgx12312025ex231.htm)\n\n53\n\n[Table](#ie5c08f396cec4eb58b332bd385d844fc_7)[of](#ie5c08f396cec4eb58b332bd385d844fc_7)[Contents](#ie5c08f396cec4eb58b332bd385d844fc_7)\n\n24.1*\n[Power of Attorney (included on signature page)](#ie5c08f396cec4eb58b332bd385d844fc_136)\n\n31.1*\n[Rule 13a-14(a) Certification of Chief Executive Officer](dgx12312025ex311.htm)\n\n31.2*\n[Rule 13a-14(a) Certification of Chief Financial Officer](dgx12312025ex312.htm)\n\n32.1**\n[Section 1350 Certification of Chief Executive Officer](dgx12312025ex321.htm)\n\n32.2**\n[Section 1350 Certification of Chief Financial Officer](dgx12312025ex322.htm)\n\n97.1\n[Quest Diagnostics Incorporated Dodd-Frank Clawback Policy, adopted November 13, 2023 (filed as an Exhibit to the Company’s 2023 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207924000041/dgx12312023ex971.htm)\n\n99.1\n[Fourth Amended and Restated Receivables Sale Agreement, dated as of October 28, 2015, between Quest Diagnostics Incorporated and the subsidiaries party thereto from time to time, as Sellers, and Quest Diagnostics Receivables Inc., as Buyer (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: May 4, 2020) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/0001022079/000094787120000426/ss171981_ex9901.htm)\n\n99.2\n[Amendment No. 1 to Fourth Amended and Restated Receivables Sale Agreement, dated as of October 25, 2019 (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: May 4, 2020) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787120000426/ss171981_ex9902.htm)\n\n99.3\n[Amendment No. 2 to Fourth Amended and Restated Receivables Sale Agreement, dated as of October 19, 2023 (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207923000157/dgx09302023ex992.htm)\n\n99.4\n[Sixth Amended and Restated Credit and Security Agreement, dated as of October 27, 2017 among Quest Diagnostics Receivables Inc., as Borrower, Quest Diagnostics Incorporated, as Initial Servicer, MUFG Bank, Ltd. (formerly known as The Bank of Tokyo Mitsubishi UFJ, Ltd.), as Administrative Agent, the Lenders party thereto, the financial institutions party thereto as agents for the conduit lenders (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: May 4, 2020) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/0001022079/000094787120000426/ss171981_ex9903.htm)\n\n99.5\n[Amendment No. 1 to Sixth Amended and Restated Credit and Security Agreement, dated as of October 26, 2018 (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: May 4, 2020) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787120000426/ss171981_ex9904.htm)\n\n99.6\n[Amendment No. 2 to Sixth Amended and Restated Credit and Security Agreement, dated as of June 14, 2019 (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: May 4, 2020) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787120000426/ss171981_ex9905.htm)\n\n99.7\n[Amendment No. 3 to Sixth Amended and Restated Credit and Security Agreement, dated as of October 25, 2019 (filed as an Exhibit to the Company’s current report on Form 8-K (Date of Report: May 4, 2020) and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000094787120000426/ss171981_ex9906.htm)\n\n99.8\n[Amendment No. 4 to Sixth Amended and Restated Credit and Security Agreement, dated as of October 22, 2020 (filed as an Exhibit to the Company's 2020 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207921000029/dgx12312020ex997.htm)\n\n99.9\n[Amendment No. 5 to Sixth Amended and Restated Credit and Security Agreement, dated as of August 13, 2021 (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended September 30, 2021 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/0001022079/000102207921000144/dgx09302021ex991.htm)\n\n54\n\n[Table](#ie5c08f396cec4eb58b332bd385d844fc_7)[of](#ie5c08f396cec4eb58b332bd385d844fc_7)[Contents](#ie5c08f396cec4eb58b332bd385d844fc_7)\n\n99.10\n[Amendment No. 6 to Sixth Amended and Restated Credit and Security Agreement, dated as of October 21, 2021 (filed as an Exhibit to the Company's 2021 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207922000027/dgx12312021ex999.htm)\n\n99.11\n[Amendment No. 7 to Sixth Amended and Restated Credit and Security Agreement, dated as of October 20, 2022 (filed as an Exhibit to the Company's 2022 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207923000018/dgx12312022ex9910.htm)\n\n99.12\n[Amendment No. 8 to Sixth Amended and Restated Credit and Security Agreement, dated as of October 19, 2023 (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended September 30, 2023 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207923000157/dgx09302023ex991.htm)\n\n99.13\n[Amendment No. 9 to Sixth Amended and Restated Credit and Security Agreement, dated as of August 8, 2024 (filed as an Exhibit to the Company’s 2024 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000044/dgx12312024ex9913.htm)\n\n99.14\n[Amendment No. 10 to Sixth Amended and Restated Credit and Security Agreement, dated as of November 20, 2024 (filed as an Exhibit to the Company’s 2024 annual report on Form 10-K and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000044/dgx12312024ex9914.htm)\n\n99.15\n[Amendment No. 11 to Sixth Amended and Restated Credit and Security Agreement, dated as of April 30, 2025 (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended June 30, 2025 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000175/dgx06302025ex991.htm)\n\n99.16*\n[Amendment No. 12 to Sixth Amended and Restated Credit and Security Agreement, dated as of November 20, 2025](dgx12312025ex9916.htm)\n\n99.17\n[Amendment and Restatement Agreement, dated as of April 30, 2025, relating to the Third Amended and Restated Credit Agreement dated as of November 23, 2021 (as amended, amended and restated, supplemented or otherwise modified), among Quest Diagnostics Incorporated, the Lenders from time to time party thereto, JPMorgan Chase Bank, N.A., as Administrative Agent, and the other agents party thereto (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended June 30, 2025 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000175/dgx06302025ex992.htm)\n\n99.18\n[Fourth Amended and Restated Credit Agreement, dated as of April 30, 2025, among Quest Diagnostics Incorporated, as Borrower, the lenders party thereto, JPMorgan Chase Bank, N.A., as Administrative Agent, and other agents party thereto, forming Exhibit A to the Amendment and Restatement Agreement in Exhibit 99.17 (filed as an Exhibit to the Company’s quarterly report on Form 10-Q for the quarter ended June 30, 2025 and incorporated herein by reference) (Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207925000175/dgx06302025ex993.htm)\n\n99.19\n[Group Joinder Agreement, among Reprosource Fertility Diagnostics, Inc., Blueprint Genetics, Inc., and Mid America Clinical Laboratories, LLC, dated as of August 13, 2021, related to the Fourth Amended and Restated Receivables Sale Agreement, dated as of October 28, 2015, among Quest Diagnostics Incorporated and certain of its subsidiaries (filed as an Exhibit to the Company’s 2022 annual report on Form 10-K and incorporated herein by reference)(Commission File Number 001-12215)](https://www.sec.gov/Archives/edgar/data/1022079/000102207923000018/dgx12312022ex9912.htm)\n\n101.INSInline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document\n\n  \n\n101.SCH\nInline XBRL Taxonomy Extension Schema Document - dgx-20251231.xsd\n\n  \n\n101.CAL\nInline XBRL Taxonomy Extension Calculation Linkbase Document - dgx-20251231_cal.xml\n\n  \n\n101.DEF\nInline XBRL Taxonomy Extension Definition Linkbase Document - dgx-20251231_def.xml\n\n55\n\n[Table](#ie5c08f396cec4eb58b332bd385d844fc_7)[of](#ie5c08f396cec4eb58b332bd385d844fc_7)[Contents](#ie5c08f396cec4eb58b332bd385d844fc_7)\n\n  \n\n101.LAB\nInline XBRL Taxonomy Extension Label Linkbase Document - dgx-20251231_lab.xml\n\n  \n\n101.PRE\nInline XBRL Taxonomy Extension Presentation Linkbase Document - dgx-20251231_pre.xml\n\n104The cover page from this annual report on Form 10-K, formatted in Inline XBRL.\n\n  *Filed herewith.\n\n**Furnished herewith.\n\n  ‡Management contract or compensatory plan or arrangement required to be filed as an Exhibit to this Form 10-K pursuant to Item 15(b) of Form 10-K.\n\n  †Certain information contained in this exhibit, marked by [***], has been omitted because it (i) is not material and (ii) is the type of information that we treat as private or confidential.\n\n(b)Exhibits filed as part of this Report.\n\n    The exhibit index in (a) above is incorporated herein by reference.\n\n(c)None."}