HF Sinclair Corporation’s Board of Directors believes that good governance practices and policies provide an important framework for the operation of the company. We are committed to conducting our business with high ethical standards.

Persons wishing to communicate with the non-management directors may do so by emailing presiding.director.HFC@hollyfrontier.com or writing to c/o Secretary, HF Sinclair Corporation, 2828 North Harwood, Suite 1300, Dallas, Texas 75201.

Conflict Minerals Report

On August 22, 2012, the U.S. Securities and Exchange Commission adopted the final rule regarding the sourcing of conflict minerals under Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act.

HF Sinclair is committed to being a responsible corporate citizen. To learn more about the initiatives HF Sinclair is taking with respect to this rule, please click on the link below: