HF Sinclair Corp

Disclosure Pursuant to Item 5.02 of Form 8-K - Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On February 24, 2026, our Board of Directors received a request from Mr. Atanas Atanasov, the Company’s Executive Vice President and Chief Financial Officer, to take a voluntary leave of absence from his duties. Our Board of Directors accepted the request and appointed Mr. Vivek Garg, the Company’s Vice President, Chief Accounting Officer and Controller, as acting Chief Financial Officer of the Company, effective as of February 24, 2026. Mr. Garg will also continue to serve in his roles as Vice President, Chief Accounting Officer and Controller.

Mr. Garg, age 51, currently serves as our Vice President, Chief Accounting Officer and Controller. Mr. Garg joined the Company in July 2024. Prior to joining our company, Mr. Garg served as Head, SEC, External Reporting and Controls, Global of Newmont Corporation (“Newmont”), a New York Stock Exchange (“NYSE”) listed gold mining company and producer of copper, silver, zinc and lead, a position he had held since October 2023. Prior to then, he served as Group Executive, Assistant Controller from December 2021 to October 2023, and Senior Director, Assistant Controller from November 2018 to December 2021. Prior to joining Newmont, Mr. Garg held the positions of Deputy Controller, Technical Accounting & Reporting, and Director, Technical Accounting at Andeavor (now Marathon Petroleum Corp.), which was a NYSE listed integrated marketing, logistics and refining company, from June 2015 to November 2018. Prior to then, he served in assurance and accounting advisory services roles for 13 years at Deloitte & Touche LLP and PricewaterhouseCoopers LLP, having most recently served as Director in Capital Markets and Accounting Advisory Services at PricewaterhouseCoopers LLP from February 2012 to June 2015. He is a registered Certified Public Accountant and a Canadian Chartered Professional Accountant.

There are no arrangements or understandings between Mr. Garg and any other person pursuant to which Mr. Garg was determined to be our principal financial officer. Mr. Garg does not have any family relationship with any director or executive officer of the Company, or any person nominated or chosen by the Company to become a director or executive officer. There are no transactions in which Mr. Garg has an interest requiring disclosure under Item 404(a) of Regulation S-K.

At the time of this filing, the Compensation Committee has not finalized any decisions regarding appropriate compensation adjustments for Mr. Garg’s appointment as acting Chief Financial Officer of the Company, but may consider such arrangements at a later date.

The Company currently expects to negotiate a mutually agreeable separation arrangement with each of Mr. Atanasov and Mr. Tim Go.