X0508 4 2025-11-03 0001915657 HF Sinclair Corp DINO 0002027139 REH Advisors Inc. 2800 WEST LINCOLNWAY CHEYENNE WY 82009 true false false false false Common Stock 2025-11-03 4 D false 960061 52.08 D 13149080 D These shares were sold by the Reporting Person to the Issuer in a private transaction pursuant to the Stock Purchase Agreement between the Reporting Person and the Issuer dated November 3, 2025. Ross B. Matthews currently serves as representative of the Reporting Person on the Issuer's board of directors, and therefore the Reporting Person constitutes a "director by deputization" of the Issuer. REH ADVISORS INC., By: /s/ Ross B. Matthews, Name: Ross B. Matthews, Title: Chair of the Board 2025-11-05