On September 18, 2023, the Board of Directors of HF Sinclair Corporation (the “Corporation”) approved the Corporation’s Third Amended and Restated By-Laws (the “Amended and Restated By-Laws”), effective as of such date, to clarify the voting standard for adjournment of meetings found in Article II, Section 6. The amended language reads as follows, with new text in bold underline:

Section 6. Notice of Adjourned Meeting. Any stockholders’ meeting, annual or special, whether or not a quorum is present, may be adjourned or postponed from time to time by either the Chairperson or a majority in interest of the stockholders entitled to vote thereat, present in person or represented by proxy.