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, as President of HLS since September 2022 and as the Chairman of the Board of HLS since November 2017. Mr. Jennings 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 has served as Executive Vice President, Corporate of HF Sinclair Corporation (“HF Sinclair”) since May 2023. Mr. Jennings served as Chief Executive of HF Sinclair Corporation from January 2020 to May 2023, President of HollyFrontier Corporation, the predecessor entity of HF Sinclair (“HFC”), from January 2020 to November 2021, as Executive Vice President of HFC from November 2019 to January 2020, as Executive Chairman of HFC from January 2016 until January 2017 and as the Chief Executive Officer and President of HFC from the merger of Holly Corporation and Frontier Oil Corporation in July 2011 until January 2016. Mr. Jennings previously served as the President and Chief Executive Officer of Frontier Oil Corporation from 2009 until the merger in July 2011 and as the Executive Vice President and Chief Financial Officer of Frontier Oil Corporation from 2005 until 2009.

Mr. Jamieson has served as Senior Vice President and Chief Operating Officer of Holly Logistic Services, L.L.C. (“HLS”), the general partner of the general partner of Holly Energy Partners, L.P., since January 2023. He served as Vice President, Pipeline Operations of the Company from the time he joined HLS in March 2013 until January 2023. Prior to joining HLS, Mr. Jamieson held various roles of increasing responsibility in engineering and plant and pipeline operations over a 25 year period at Eagle Rock Energy Partners, L.P., Enterprise Products Partners L.P., Williams Energy Partners LP (now known as Magellan Midstream Partners, L.P.), and TC Energy Corporation (formerly known as TransCanada Corporation).

Director Since:

2011

Business Experience:

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, as President of HLS since September 2022 and as the Chairman of the Board of HLS since November 2017. Mr. Jennings 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 has served as Executive Vice President, Corporate of HF Sinclair Corporation (“HF Sinclair”) since May 2023. Mr. Jennings served as Chief Executive of HF Sinclair Corporation from January 2020 to May 2023, President of HollyFrontier Corporation, the predecessor entity of HF Sinclair (“HFC”), from January 2020 to November 2021, as Executive Vice President of HFC from November 2019 to January 2020, as Executive Chairman of HFC from January 2016 until January 2017 and as the Chief Executive Officer and President of HFC from the merger of Holly Corporation and Frontier Oil Corporation in July 2011 until January 2016. Mr. Jennings previously served as the President and Chief Executive Officer of Frontier Oil Corporation from 2009 until the merger in July 2011 and as the Executive Vice President and Chief Financial Officer of Frontier Oil Corporation from 2005 until 2009.

Additional Directorships:

Mr. Jennings served as a director of HF Sinclair from July 2011 until May 2023 and served as Chairman of the Board of HF Sinclair from January 2017 to February 2019 and January 2013 to January 2016. Mr. Jennings served as a director of FTS International, Inc. from January 2019 to November 2020 and as a director of ION Geophysical Corporation from December 2010 until February 2019. He served as a director of Frontier Oil Corporation from 2008 until the merger in July 2011 and as Chairman of the board of directors of Frontier Oil Corporation from 2010 until the merger in July 2011.

Director Since:

2018

Business Experience:

Ms. LaFollette served as a Partner at Akin Gump Strauss Hauer & Feld LLP from June 2004 until her retirement in December 2020. Beginning January 2021, Ms. LaFollette was named Partner Emeritus at Akin Gump Strauss Hauer & Feld LLP. Prior to that, Ms. LaFollette served as a Partner at King & Spalding LLP from 1997 to June 2004, as a Partner at Andrews & Kurth LLP from 1987 to 1997 and as an associate at Andrews & Kurth LLP from 1980 to 1987.

Director Since:

2018

Business Experience:

Mr. Mattson served as Executive Vice President, Finance of Select Energy Services, Inc., a provider of total water solutions to the U.S. unconventional oil and gas industry, from November 2016 until his retirement in March 2018 and served as Executive Vice President and Chief Financial Officer of Select Energy Services, Inc. from November 2008 through January 2016. Prior to that, Mr. Mattson served as Senior Vice President and Chief Financial Officer of VeriCenter, Inc., a private provider of managed hosting services, from 2003 until its acquisition in August, 2007. Mr. Mattson worked as an independent consultant from November 2002 to October 2003. Mr. Mattson served as the Chief Financial Officer of Netrail, Inc., a private Internet backbone and broadband service provider, from September 1999 until November 2002. From July 1993 until May 1999, Mr. Mattson served as Senior Vice President and Chief Financial Officer of Baker Hughes Incorporated, a provider of products and services to the oil, gas and process industries. Mr. Mattson joined Baker International, Inc. in 1980, and served in a number of capacities, including Treasurer, prior to the merger of Baker International, Inc. and Hughes Tool Company in 1987, at which time he became Vice President and Treasurer of Baker Hughes, Inc., a position he held until 1993.

Additional Directorships:

Mr. Mattson has served as a director of National Oilwell Varco, Inc. since March 2005 (having served as a director of Varco (and its predecessor, Tuboscope Inc.) from January 1994 until its merger with National Oilwell Varco in March 2005). He served as a director of Rex Energy Corporation from April 2010 until November 2018.