Board of Directors

Brenda A. Cline

Brenda A. Cline became a director in 2015. Since 1993, Ms. Cline has served as executive vice president, chief financial officer, treasurer, and secretary of the Kimbell Art Foundation, a private operating foundation that owns and operates the Kimbell Art Museum, Fort Worth, Texas. Ms. Cline has also served as an independent trustee of American Beacon Funds since 2004 and currently serves as the chair of the audit and compliance committee. She is a director of Tyler Technologies, Inc., serving on the nominating and governance committee and as the chair of the audit committee.

From 1993 until 2013, Ms. Cline served as a contract author for Thomson Reuters, Fort Worth, Texas. Before 1993, Ms. Cline held various positions with Ernst & Young LLP. Ms. Cline also serves on the boards of certain non-profit entities, including on the board of trustees of Texas Christian University and the Pension Fund of the Christian Church. Ms. Cline is a certified public accountant. She earned her Bachelor of Business Administration, Accounting degree, summa cum laude, from Texas Christian University.

Director Since: 2015
Range Resources Corporation Committee Membership:
Audit Committee
Compensation Committee
ESG & Safety Committee

Dennis L. Degner

Dennis L. Degner, Chief Executive Officer and President joined Range in 2010. Mr. Degner was named Chief Executive Officer effective May 10, 2023. Mr. Degner has more than 20 years of oil and gas experience having worked in a variety of technical and managerial positions across the United States including Texas, Louisiana, Wyoming, Colorado and Pennsylvania.

Prior to joining Range, Mr. Degner held positions with EnCana, Sierra Engineering and Halliburton. Mr. Degner is a member of the Society of Petroleum Engineers and has been published for his work on active roles played in the deployment of new technologies. Mr. Degner holds a Bachelor of Science Degree in Agricultural Engineering from Texas A&M University.

Director Since: 2023

Margaret K. Dorman

Margaret K. Dorman became a director in 2019. Ms. Dorman has 30 years of experience in the energy industry, largely focused in the oilfield service and equipment sector. In 2009, she retired as the Executive Vice President, Chief Financial Officer and Treasurer of Smith International, Inc. (now part of Schlumberger Limited) after spending more than a decade in that role.  Previously, she held management positions at Landmark Graphics, prior to its acquisition by Halliburton Corporation, and Ernst & Young. 

Ms. Dorman has served as an independent director of Equitrans Midstream Corporation since the November 2018 separation from EQT Corporation and, for the previous seven years, as an independent director of EQT Corporation.  Additionally, she is a director of privately-held Rubicon Oilfield International and formerly served as a director of Hanover Compressor Company.  Ms. Dorman earned a Bachelor of Arts degree in Economics-Business from Hendrix College and is a certified public accountant. 

Director Since: 2019
Range Resources Corporation Committee Membership: 
Audit Committee
Compensation Committee
ESG & Safety Committee

Charles G. Griffie

Charles G. Griffie became a director in 2023. Mr. Griffie previously served as the Senior Vice President of Engineering and Operations at Western Midstream Partners, LP. Mr. Griffie also worked in the Appalachian Basin and was a founding executive and Senior Vice President of Operations, Midstream and marketing for Olympus Energy. Prior to that, Mr. Griffie had an extensive career with Anadarko Petroleum Corporation where he worked in various roles of responsibility.  Mr. Griffie is an independent director for privately held Koloma, Inc., a geologic hydrogen company, serving on the Audit and Risk committee. 

Mr. Griffie earned a bachelor’s degree in mechanical engineering and an MBA from the University of Colorado at Denver. He also completed the Program for Leadership Development – Executive Education at Harvard Business School. Mr. Griffie was recently recognized by the National Diversity Council as a top 100 Black Executive and top 100 Diverse Leaders in Energy.

Director Since: 2023
Range Resources Corporation Committee Membership:
Governance & Nominating Committee
ESG & Safety Committee

Chris S. Kendall

Chris S. Kendall became a director in February 2025. Mr. Kendall has more than 30 years of experience in the global oil and gas industry, including as a director, President, and Chief Executive Officer of Denbury Inc. prior to its acquisition by Exxon Mobil Corporation in November 2023. Prior to joining Denbury, Mr. Kendall was with Noble Energy, serving as the Senior Vice President, Global Operations Services. During his 14-year tenure at Noble Energy, Mr. Kendall held several international and domestic leadership roles, primarily in the Eastern Mediterranean, Latin America, and the Gulf regions. Mr. Kendall began his energy career at Mobil Corporation in 1989.

Mr. Kendall earned a Bachelor of Science in Engineering, Civil Specialty from the Colorado School of Mines and graduated from Harvard Business School’s Advanced Management Program. Mr. Kendall is a director of NOV Inc. and California Resources Corporation, including its subsidiary, Carbon TerraVault

Director Since: 2025
Range Resources Corporation Committee Membership:
Governance & Nominating Committee
ESG & Safety Committee

Greg G. Maxwell

Greg G. Maxwell became a director in September 2015, and Chairman of the board in July 2018. Mr. Maxwell served as executive vice president, Finance, and chief financial officer for Phillips 66, a diversified energy manufacturing and logistics company until his retirement on December 31, 2015. Mr. Maxwell had over 37 years of experience in various financial roles within the petrochemical and oil and gas industries.

Mr. Maxwell served as senior vice president, chief financial officer and controller for Chevron Phillips Chemical Company from 2003 until joining Phillips 66 in 2012. He joined Phillips Petroleum Company in 1978 and held various positions within the comptrollers group including the corporate planning and development group, the corporate treasury department and downstream business units. He is a certified public accountant and a certified internal auditor. He earned a Bachelor of Accountancy degree from New Mexico State University in 1978. 

Director Since: 2015
Range Resources Corporation Committee Membership: 
Audit Committee
Compensation Committee
ESG & Safety Committee

Reginal W. Spiller

Reginal W. Spiller became a director in September 2021. Mr. Spiller began his energy career as a geologist with Exxon USA and is now President and CEO of Azimuth Energy Investments, LLC, providing energy advisory services to upstream companies.  Mr. Spiller also had a distinguished public service career, having served as the Deputy Assistant Secretary of Oil and Gas at the U.S. Department of Energy, focusing on the development of advanced technologies for the natural gas and oil industry.  He is still active with the DOE’s fossil energy technology and carbon capture projects and has served on several National Research Council/National Academy of Science boards.   Mr. Spiller is a member of the American Association of Petroleum Geologists, Society of Petroleum Engineers, Geologic Society of America, and the National Association of Black Geoscientists.  

Mr. Spiller earned a bachelor’s degree in geology from the State University of New York and a M.S. in geology from Penn State University. 

Director Since: 2021
Range Resources Corporation Committee Membership: 
Compensation Committee
Governance & Nominating Committee
ESG & Safety Committee