HF Sinclair Corp

(Former name or former address, if changed since last report)

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.07 Submission of Matters to a Vote of Security Holders.

On May 13, 2026, HF Sinclair Corporation (“HF Sinclair”) held its 2026 Annual Meeting of Stockholders (the “Annual Meeting”). A total of 164,376,715 shares of HF Sinclair’s common stock were present in person or represented by proxy at the Annual Meeting, representing over 91% of HF Sinclair’s 180,273,453 shares of common stock outstanding and entitled to vote as of the March 16, 2026 record date. The matters submitted for a vote and the related results are set forth below. A more detailed description of each proposal is set forth in HF Sinclair’s definitive Proxy Statement filed with the Securities and Exchange Commission on March 31, 2026 (the “Proxy Statement”).

•Proposal 1 (Election of Directors): The stockholders elected all ten (10) director nominees to serve until HF Sinclair’s annual meeting of stockholders in 2027, or until their earlier resignation or removal.

•Proposal 2(Advisory Vote on the Compensation of HF Sinclair’s Named Executive Officers): The stockholders approved on an advisory basis the compensation of HF Sinclair’s named executive officers as disclosed in the Proxy Statement.