HF Sinclair Corp

References herein to HF Sinclair Corporation (“HF Sinclair” or the “Company”) include HF Sinclair and its consolidated subsidiaries. In this document, the words “we,” “our,” “ours” and “us” refer only to HF Sinclair and its consolidated subsidiaries or, in certain contexts, to HF Sinclair or an individual consolidated subsidiary and not to any other person, with certain exceptions. References herein to Holly Energy Partners, L.P. (“HEP”) with respect to time periods prior to the HEP Merger Transaction (as defined below) refer to HEP and its consolidated subsidiaries.

We are an independent energy company that produces and markets high-value light products such as gasoline, diesel fuel, jet fuel, renewable diesel and other specialty products. We were incorporated in Delaware in 1947 and maintain our principal corporate offices at 2323 Victory Avenue, Suite 1400, Dallas, Texas 75219. Our telephone number is 214-871-3555, and our internet website address is www.hfsinclair.com. We use our website and social media accounts, including LinkedIn (@HF Sinclair) and Facebook (@HF Sinclair), as a means of disclosing information about us and our services, which information may be deemed material. Except as specifically noted, the information found on our website and social media accounts is not incorporated by reference into, and do not constitute part of, this Annual Report on Form 10-K or any other report filed with or furnished to the Securities and Exchange Commission (“SEC”). A print copy of this Annual Report on Form 10-K will be provided without charge upon written request to the Vice President, Investor Relations at the above address. A direct link to our SEC filings is available on our website under the Investor Relations tab. Also available on our website are copies of our Corporate Governance Guidelines, Audit Committee Charter, Compensation Committee Charter, Nominating, Governance and Social Responsibility Committee Charter, Finance Committee Charter, Environmental, Health, Safety, and Public Policy Committee Charter and Code of Business Conduct and Ethics, all of which will be provided without charge upon written request to the Vice President, Investor Relations at the above address. Our Code of Business Conduct and Ethics applies to all of our officers, employees and directors, including our principal executive officer, principal financial officer and principal accounting officer. Our common stock is traded on the New York Stock Exchange and NYSE Texas, Inc. under the trading symbol “DINO.”

HEP Merger Transaction

On December 1, 2023, we completed the merger of HEP into an indirect wholly owned subsidiary of HF Sinclair pursuant to an Agreement and Plan of Merger dated August 15, 2023 (the “HEP Merger Transaction”). Consideration paid in connection with the merger included cash and shares of HF Sinclair common stock.

Operations Overview

As of December 31, 2025, we:

•owned and operated a refinery in El Dorado, Kansas (the “El Dorado Refinery”), two refinery facilities located in Tulsa, Oklahoma (collectively, the “Tulsa Refineries”), the Puget Sound refinery in Anacortes, Washington (the “Puget Sound Refinery”), a refinery in Artesia, New Mexico and a refinery in Lovington, New Mexico (collectively, the “Navajo Refineries”), a refinery in West Bountiful, Utah (the “Woods Cross Refinery”), a refinery in Sinclair, Wyoming (the “Parco Refinery”) and a refinery in Casper, Wyoming (the “Casper Refinery”);

•owned and operated an RDU in Artesia, New Mexico (the “Artesia RDU”), an RDU in Cheyenne, Wyoming (the “Cheyenne RDU”) and an RDU in Sinclair, Wyoming (the “Sinclair RDU”), and a pre-treatment unit (“PTU”) in Artesia, New Mexico (the “Artesia PTU”);

•owned and operated a manufacturing facility in Mississauga, Ontario, which produces base oils and other specialized lubricant products for our Petro-Canada Lubricants business;

•owned and operated manufacturing facilities in Petrolia, Pennsylvania and the Netherlands, which produce specialty lubricant products for our Sonneborn business, such as white oils, petrolatums and waxes;

•owned and operated Red Giant Oil Company LLC (“Red Giant Oil”), which supplies locomotive engine oil and has blending, storage and packaging capabilities, and distribution facilities in Iowa and Texas;

•owned and operated HF Sinclair Asphalt Company LLC (“Asphalt”), which operates various asphalt terminals in Arizona, New Mexico and Oklahoma; and

•owned and operated logistics and refinery assets consisting of petroleum product and crude oil pipelines, terminals, tankage, loading rack facilities and refinery processing units that principally support our refining operations in the Mid-Continent, Southwest and Rocky Mountains geographic regions of the United States.

As of December 31, 2025, our operations were organized into five reportable segments: Refining, Renewables, Marketing, Lubricants & Specialties and Midstream. The Refining segment includes the operations of our El Dorado, Tulsa, Puget Sound, Navajo, Woods Cross, Parco and Casper refineries and Asphalt. The Renewables segment includes the operations of the Artesia, Cheyenne and Sinclair RDUs and the Artesia PTU. The Marketing segment includes branded fuel sales. The Lubricants & Specialties segment includes the operations of our Petro-Canada Lubricants, Red Giant Oil and Sonneborn businesses in addition to specialty lubricant products produced at our Tulsa West refinery. The Midstream segment includes petroleum product and crude pipelines, and terminal, tankage and loading rack facilities that primarily support our refining operations. See Note 19 “Segment Information” in the Notes to Consolidated Financial Statements in Item 8 of Part II of this Annual Report on Form 10-K for additional information on our reportable segments.