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Corbin J. Robertson, Jr. has served as chief executive officer and chairman of the board of directors of GP Natural Resource Partners LLC since 2002. Mr. Robertson has vast business experience having founded and served as a director and as an officer of multiple companies, both private and public, and has served on the boards of numerous non-profit organizations. He has served as the chief executive officer and chairman of the board of the general partner of Great Northern Properties Limited Partnership since 1992 and Quintana Minerals Corporation since 1978, as chairman of the board of directors of New Gauley Coal Corporation since 1986, and the general partner of Western Pocahontas Properties Limited Partnership since 1986. In addition, Mr. Robertson served as chief executive officer of the general partner of Western Pocahontas Properties Limited Partnership from 1986 until 2008. He also served as a principal with Quintana Capital Group through 2023 and serves as chairman of the board of the Cullen Trust for Higher Education, and in November 2024 was appointed chairman of the board of KLX Energy Services. In addition, Mr. Robertson serves on the boards of the American Petroleum Institute, the National Petroleum Council, the Baylor College of Medicine, and the Spirit Golf Association. In 2006, Mr. Robertson was inducted into the Texas Business Hall of Fame. Mr. Robertson is the father of Corbin J. Robertson, III.

Chris Zolas was named chief financial officer in August 2017 after serving as chief accounting officer since joining NRP in March 2015. He also served as treasurer from August 2017 to May 2023.

Prior to joining the Partnership, Mr. Zolas served as director of financial reporting at Cheniere Energy, Inc., a publicly traded energy company with five SEC registrants including a master limited partnership, where he performed financial statement preparation and analysis, technical accounting and SEC reporting. Mr. Zolas joined Cheniere Energy, Inc. in 2007 as manager of SEC reporting and technical accounting and was promoted to director in 2009. Prior to joining Cheniere Energy, Inc., Mr. Zolas worked in public accounting with KPMG LLP from 2002 to 2007.

Mr. Zolas received his Bachelor of Science degree with honors in biochemistry from Trinity University in May 1996 and his master’s in accountancy from the University of Houston in 2002. He is a licensed CPA in the state of Texas.

Corbin J. Robertson, Jr. has served as chief executive officer and chairman of the board of directors of GP Natural Resource Partners LLC since 2002. Mr. Robertson has vast business experience having founded and served as a director and as an officer of multiple companies, both private and public, and has served on the boards of numerous non-profit organizations. He has served as the chief executive officer and chairman of the board of the general partner of Great Northern Properties Limited Partnership since 1992 and Quintana Minerals Corporation since 1978, as chairman of the board of directors of New Gauley Coal Corporation since 1986, and the general partner of Western Pocahontas Properties Limited Partnership since 1986. In addition, Mr. Robertson served as chief executive officer of the general partner of Western Pocahontas Properties Limited Partnership from 1986 until 2008. He also served as a principal with Quintana Capital Group through 2023 and serves as chairman of the board of the Cullen Trust for Higher Education, and in November 2024 was appointed chairman of the board of KLX Energy Services. In addition, Mr. Robertson serves on the boards of the American Petroleum Institute, the National Petroleum Council, the Baylor College of Medicine, and the Spirit Golf Association. In 2006, Mr. Robertson was inducted into the Texas Business Hall of Fame. Mr. Robertson is the father of Corbin J. Robertson, III.

Galdino J. Claro joined the Board of Directors of GP Natural Resource Partners LLC in March 2018. Mr. Claro has 30 years of worldwide executive leadership experience in the primary and secondary metals industries. From October 2013 to August 2017, Mr. Claro served as the Group Chief Executive Officer and Managing Director of Sims Metal Management where he was also a member of the Safety, Health, Environment and Sustainability Committee, the Nomination Governance Committee and the Finance Investment Committee. Before joining Sims Metal Management, Mr. Claro served for four years as the Chief Executive Officer of Harsco Metals and Minerals. He joined Harsco from Aleris, where he served as CEO of Aleris Americas. Before that, he was the CEO of the Metals Processing Group of Heico Companies LLC. During his career with Alcoa Inc., Mr. Claro served for five years as the President of Alcoa China and for six years in Europe as the Vice President of Soft Alloys Extrusions and the President of Alcoa Europe Extrusions. While in South America, Mr. Claro worked for several different divisions of Alcoa Alumni SA as plant manager, technology manager, new products development director and Managing Director of Alcoa Cargo-Van. Before joining Alcoa in 1985, Mr. Galdino Claro started his career at Honda – Motogear as a Quality Control Manager where he worked for three years in both Brazil and Japan.