Mr. Jennings has served as Chief Executive Officer since January 2020. He served as President from January 2020 until November 2021, as Executive Vice President from November 2019 through December 2019, as Executive Chairman from January 2016 until January 2017 and as the Chief Executive Officer and President from the merger of Holly Corporation (“Holly”) and Frontier Oil Corporation (“Frontier”) in July 2011 until January 2016. He served as Chairman of the Board from January 2017 to February 2019 and January 2013 to January 2016. Mr. Jennings has served as Chief Executive Officer of Holly Logistic Services, L.L.C. (“HLS”), the general partner of the general partner of Holly Energy Partners, L.P., since January 2020 and as President of HLS since September 2022. He previously served as Chief Executive Officer of HLS from January 2014 to November 2016 and as President of HLS from October 2015 to February 2016. Mr. Jennings previously served as President and Chief Executive Officer of Frontier from 2009 until the merger of Holly and Frontier in July 2011 and as the Executive Vice President and Chief Financial Officer of Frontier from 2005 until 2009.

Mr. Atanasov has served as Executive Vice President and Chief Financial Officer since September 2022. Prior to joining HF Sinclair, Mr. Atanasov served as Chief Financial Officer of Lummus Technology LLC, a global chemical technologies company for the petrochemical and energy industries, from April 2022 to September 2022, as the Executive Vice President, Chief Financial Officer and Treasurer of Kraton Corporation, a NYSE listed specialty chemical company, from May 2019 until its merger with DL Holdings in March 2022 and as the Chief Financial Officer of Empire Petroleum Partners, LLC, a wholesale distributor of motor fuels, from February 2016 to May 2019. Prior to then, Mr. Atanasov served as Executive Vice President, Chief Financial Officer and Treasurer of NGL Energy Partners LP, a NYSE listed MLP, from May 2013 to February 2016, as Senior Vice President, Finance and Treasurer from September 2012 to May 2013 and as Vice President and Treasurer from November 2011 to September 2012. Prior to joining NGL, he held various finance roles of increasing responsibility with GE Capital from January 2003 to November 2011. He is a registered Certified Public Accountant.

Director Since: 2011

Business Experience:

Mr. Myers has served as the Chairperson of the Board since February 2019. Mr. Myers has served as a senior advisor of Quantum Energy Partners, a private equity firm, since February 2013. Mr. Myers served as an operating advisor to Paine & Partners, LLC, a private equity firm, from 2009 through 2012 and as Senior Advisor to Cameron International Corporation, a publicly traded provider of flow equipment products, from 2008 until 2009. He served Cameron in various other capacities, including as Senior Vice President and Chief Financial Officer from 2003 through 2008, President of Cameron’s compression business from 1998 through 2001 and Senior Vice President and General Counsel from 1995 through 1999. In addition, Mr. Myers served as Senior Vice President and General Counsel of Baker Hughes Incorporated from 1988 through 1995 and as an associate and then a partner at Fulbright & Jaworski (now Norton Rose Fulbright) from 1978 through 1988.

Additional Directorships:

Mr. Myers served as a director of Frontier Oil Corporation from 2009 until the merger of Frontier Oil Corporation and Holly Corporation in July 2011, as a director of Forum Energy Technologies, Inc. from September 2010 until March 2018, as a director of ION Geophysical Corporation from 2001 to June 2019, and as a director of NCS Multistage Holdings, Inc. from February 2017 to June 2020. He currently serves as a director of Comfort Systems USA, Inc. Mr. Myers also serves as a director of WireCo WorldGroup Inc., which ceased to have a class of securities registered pursuant to Section 12 of the Exchange Act at the end of September 2016.

Director Since:

2017

Business Experience:

Ms. Catalano served in various capacities for BP plc, and its predecessor Amoco Corporation, from 1979 until her retirement in 2003, including as Group Vice President, Marketing, for BP plc from 2000 to 2003.

Additional Directorships:

Ms. Catalano currently serves on the boards of directors of Ecovyst Inc. and Frontdoor, Inc. She served on the boards of directors of Mead Johnson Nutrition Company until May 2017, Chemtura Corporation until June 2017, Kraton Corporation until March 2022 and Willis Towers Watson plc until June 2022 (having previously served on the board of directors of Willis Group from 2006 until the merger of Willis Group and Towers Watson & Co.).

Director Since:

2020

Business Experience:

Mr. Fernandez joined KPMG LLP in 1984 and served in a number of leadership positions until his retirement in September 2020, including most recently as Managing Partner of the Dallas office and market leader for KPMG’s Southwest region across audit, tax and consulting services from October 2009 to September 2020. During his career at KPMG, he also served as National Managing Partner for Talent Acquisition, member of the National Inclusion and Diversity Board and as Co-Chair of the National Hispanic/Latino employee resource group.

Additional Directorships:

Mr. Fernandez serves on the board of directors of Jacobs Engineering Group Inc. since October 2020.

Director Since: 2022

Business Experience:

Mr. Hardy joined Shell USA, Inc. (formerly Shell Oil Company, Inc.) in 1988, and at the time of his retirement in 2022, Mr. Hardy served as Senior Vice President, Shell Chemicals and Products, for the U.S. Gulf Coast, a position he held since 2021. Prior to that time, Mr. Hardy served in a number of leadership positions, including as Vice President, Shell Chemicals and Products/General Manager, Shell Geismar Chemical Site from 2018 until 2021 and as General Manager, Shell Geismar Chemical Site from 2015 to 2018.

Director Since:

2019

Business Experience:

Mr. Knocke is a co-founder and a Director of Turtle Creek Trust Company, a private trust and investment management firm, since 2009. He currently serves as the Chief Investment Officer and has served as a Portfolio Manager at Turtle Creek Management, LLC, a registered investment advisory firm based in Dallas, Texas, since 2007. Since 2009, Mr. Knocke has served as a Principal and a non-controlling manager and member of TCTC Holdings, LLC (“TCTC”), a bank holding company that is a banking, securities, and investment management firm. He previously held positions as a Vice President and Portfolio Manager at Brown Brothers Harriman & Co., as well as positions at Salomon Brothers and Texas Instruments.

Director Since:

2011

Business Experience:

Mr. Lee has served as the Managing General Partner of Lee, Hite & Wisda Ltd., a private company with investments in oil and gas working, royalty and mineral interests, since founding the firm in 1984.

Additional Directorships:

Mr. Lee serves as a member of the Board of Directors of Holly Logistic Services, L.L.C., the general partner of the general partner of Holly Energy Partners, L.P. He previously served as a director of Frontier from 2000 until the merger in July 2011.

Director Since: 2022

Business Experience:

Mr. Szydlowski served as President and Chief Executive Officer and Director of SemGroup Corporation from November 2009 until his retirement in June 2014. He also previously served as Chief Executive Officer for Rose Rock Midstream and Colonial Pipeline Company. From 2004 to 2005, Mr. Szydlowski served as the Senior Consultant to the Iraqi Ministry of Oil in Baghdad on behalf of the U.S. Department of Defense (OSD, CPA) and Department of State (Embassy Baghdad). He was a Commissioner on the National Commission on Energy Policy and chaired the Task Force on Biofuels Infrastructure. Mr. Szydlowski co-chaired the Task Force on Ensuring Stable Natural Gas Prices for the Bipartisan Policy Center and was a member of the Working Group, Bipartisan Policy Center Response to The National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling Request. From 2002 until 2004, he was Vice President of Refining for Chevron Corporation and he first joined Chevron in 1981.

Additional Directorships:

Mr. Szydlowski currently serves as a director of Equitrans Midstream Corporation (“Equitrans”) and he served as a director of Sinclair Oil, which was comprised of the refining, marketing and renewables business HF Sinclair acquired from REH Company, from April 2017 until March 2022. Mr. Szydlowski served as a director of EQT Corporation (“EQT”) from November 2017 until the separation of EQT and Equitrans in November 2018. He served as a director of the general partner of 8point3 Energy Partners, LP from June 2015 until its acquisition by Capital Dynamics, Inc. in June 2018. Mr. Szydlowski also served as a director of the general partner of JP Energy Partners LP from July 2014 through March 2017.

Mr. Kunneman has served as Senior Vice President and Chief Human Resources Officer of the Company and Holly Logistic Services, L.L.C., the general partner of the general partner of Holly Energy Partners, L.P., since November 2021. He previously served as Vice President and Chief Human Resources Officer from April 2018 until November 2021. Prior to joining the Company, he was Executive Vice President of HR and Chief People & Culture Officer at Accudyne Industries. He also served in executive leadership roles in HR at Baker Hughes.

Mr. Miller has served as Senior Vice President, Commercial of the Company, since March 2021. Prior to joining the Company, he was Vice President and Head of Commodity Trading, Supply and Logistics at Husky Energy. Mr. Miller has nearly 30 years of commercial leadership experience across various organizations including United Refining Company and served in the United States Army for 21 years, retiring in 2009 with the rank of Lieutenant Colonel, Army National Guard.

Mr. Fronzaglio has served as Vice President and Chief Information Officer of the Company and Holly Logistic Services, L.L.C. (“HLS”), the general partner of the general partner of Holly Energy Partners, L.P., since August 2019. Prior to such time, he served as Vice President of Information Technology of the Company and HLS from July 2018 to August 2019. He also served as Vice President, Internal Audit of the Company and HLS from January 2014 to June 2018 and Director, Internal Audit of the Company and HLS from June 2006 to January 2014. Preceding his time at the Company, Mr. Fronzaglio was a manager at risk advisory consulting firm, KPMG LLP from January 2004 to June 2006, where he worked with clients in the oil and gas industry. Prior to KPMG, he served in various internal audit, finance and financial systems roles in the energy and telecommunications industries since 1991.

Mr. Harrison has served as Vice President, Finance, Strategy and Treasurer of the Company since September 2020. Mr. Harrison previously served as Vice President, Finance, Investor Relations and Treasurer of the Company from September 2018 to September 2020. He has served as Senior Vice President, Chief Financial Officer and Treasurer of Holly Logistic Services, L.L.C. (“HLS”), the general partner of the general partner of Holly Energy Partners, L.P., since January 2020. Mr. Harrison previously served as Vice President, Finance, Investor Relations and Treasurer of HLS from October 2018 until January 2020. He previously served as Vice President and Treasurer of the Company and HLS from January 2017 to October 2018, Business Development Representative of the Company and HLS from April 2013 to December 2016, Assistant Treasurer of the Company and HLS from August 2012 to March 2013, Manager, Credit & Collections of the Company and HLS from March 2010 to August 2012, Supervisor, Credit & Collections of the Company and HLS from January 2007 to February 2010 and Financial Analyst of the Company and HLS from October 2005 to February 2007. Prior to joining Holly Corporation, Mr. Harrison worked in the Planning & Financial Management group at JPMorgan Chase & Co.

Mr. Biery has served as Vice President, Investor Relations of the Company and Holly Logistic Services, L.L.C. (“HLS”), the general partner of the general partner of Holly Energy Partners, L.P., since September 2020. Mr. Biery joined the Treasury Department of the Company in 2012, transitioned into Investor Relations in 2014 and was promoted to Director of Investor Relations of the Company and HLS in March 2017. Prior to his time with the Company, he worked in private banking at Citigroup and Merrill Lynch.