Board of Directors

Edward Geiser


Mr. Edward Geiser has served on Ranger's Board and as Chairman of the Board since January 2021.  Mr. Geiser is the Managing Partner of Juniper, our controlling shareholder, as well as the head of the firm's investment committee. He assisted with the original formation of Juniper in 2003 and led the firm’s re-formation in 2014. Prior to 2014, Mr. Geiser was a Managing Director at Och-Ziff Capital Management where he focused on Och-Ziff's private investing activity in the energy industry in North America for over five years. Over the past 12 years, Mr. Geiser has served on the boards of a number of private upstream and midstream energy companies with assets located in the United States. Prior to Och-Ziff, Mr. Geiser worked at each of Merrill Lynch and Morgan Stanley in Houston where he focused on advisory work related to public and private energy companies. Mr. Geiser received a B.S. in Finance from the Louisiana State University.

Darrin Henke

President, Chief Executive Officer and Director

Mr. Darrin J. Henke has served on the Board and as President and Chief Executive Officer (“CEO”) of the Company since August 2020.  Prior to joining Ranger, Mr. Henke served nearly five years (between 2015 and 2020) as the CEO of Gary Petroleum Partners and Gary Permian LLC, a private oil and gas acquisition and development company. He was previously employed by Encana Oil & Gas (USA) Inc. for eleven years, most recently as Vice President & General Manager for Southern Operations overseeing, among others, Encana’s entrance into the Eagle Ford and Permian Basins. With thirty years of experience in the oil and gas business, Mr. Henke was also employed by Tom Brown Inc., Venoco Inc. and Burlington Resources. Mr. Henke graduated summa cum laude with a B.S. in Mechanical Engineering from Texas Tech University and also completed Duke’s Advanced Management Program. He was the recipient of the Denver Business Journal’s 2013 Power Book Award for outstanding business leadership, currently sits on the board of Colorado’s State Chamber of Commerce, and is a registered Professional Petroleum Engineer.

Richard Burnett


Mr. Burnett is the President and Chief Executive Officer of Silver Creek Oil & Gas. Mr. Burnett previously served as Chief Financial Officer of Covey Park Energy, where he was instrumental in the divestiture of the company. Before joining Covey Park Energy, Mr. Burnett served as the Chief Financial Officer of Double Eagle Energy Holdings II and served as the Vice President, Chief Financial Officer and Chief Accounting Officer of EXCO Resources, Inc. Prior to these roles, Mr. Burnett was a partner at KPMG LLP and a Manager at Arthur Anderson LLP. He also serves on the board of both US Well Services and Select Energy Services, as a Director and the Chairman of the Audit Committee. Mr. Burnett is a Certified Public Accountant in the State of Texas.

Tiffany (“TJ”) Thom Cepak


Ms. Tiffany Thom Cepak has served on Ranger's Board since September 2019. Ms. Cepak has more than 25 years of operational and financial experience within the energy industry and was the Chief Financial Officer (“CFO”) of Energy XXI Gulf Coast Inc., an oil and natural gas development and production company, from August 2017 until October 2018. She was also CFO of KLR Energy Acquisition Corp., a special purpose acquisition company (and subsequent to its business combination, Rosehill Resources Inc.) from January 2015 to June 2017 and CFO of EPL Oil & Gas, Inc. for four years until it was sold in 2014. Ms. Cepak has been a director of Patterson-UTI Energy, Inc. since August 2014 and a director of California Resources Corporation since October 2020. She served as a director of Yates Petroleum Corporation, a privately owned onshore exploration and production company, from October 2015 to October 2016. Ms. Cepak began her career as a Senior Reservoir Engineer with Exxon Production Company and Exxon Mobil Company with operational roles, including reservoir and subsurface completion engineering. Ms. Cepak holds a B.S. in Engineering from the University of Illinois and a Masters of Business Administration in Management with a concentration in Finance from Tulane University.

Kevin Cumming


Mr. Kevin Cumming has served on Ranger's Board since January 2021.  Mr. Cumming is a Partner and member of the investment committee at Juniper, our controlling shareholder. He was part of the original investment team for Juniper beginning in 2005, and he re-joined in 2014 when it was re-formed. Prior to re-joining Juniper, Mr. Cumming co-founded and was President of Expedition Water Solutions, a private equity-backed oilfield water company. Mr. Cumming also served as a Vice President of White Deer Energy, a Houston-based middle-market private equity firm focused on the energy industry. During his career, he has been involved with over 20 private energy companies, many of which he helped found, and served on numerous Boards.  Mr. Cumming has also held various roles at Select Energy Services, Buckeye Partners and Merrill Lynch. Mr. Cumming holds a B.B.A. in Business Honors and Finance from The University of Texas at Austin and an M.B.A. from Rice University.

Tim Gray


Mr. Tim Gray has served on our Board since January 2021.  Mr. Gray is the General Counsel and Chief Compliance Officer of Juniper, Ranger's controlling shareholder. Prior to joining Juniper in 2017, Mr. Gray was a Managing Director and General Counsel at Och-Ziff Capital Management Group for over eight years. Mr. Gray holds a J.D. from Boston College Law School and a B.S. in Business Administration and Political Science from the University of North Carolina at Chapel Hill.

Temitope Ogunyomi


Mr. Temitope Ogunyomi has served on Ranger's Board since January 2021. Mr. Ogunyomi is a Director at Juniper, Ranger's controlling shareholder, and has over 15 years of technical, operational and investment experience in the energy industry. Prior to joining Juniper in 2018, Mr. Ogunyomi was a Vice President for mergers, acquisitions and divestitures within the energy investment banking group at Evercore Inc., a global investment banking advisory firm, from 2016 to 2018. While at Evercore, Mr. Ogunyomi was involved in leading and executing sell-side and buy-side advisory mandates, capital raises and restructuring for upstream and midstream energy companies. Prior to joining Evercore, Mr. Ogunyomi worked in various leadership, A&D, exploration, asset development and operational roles within several unconventional and conventional plays at Anadarko Petroleum, Marathon Oil and Chesapeake Energy. While working in the E&P sector, Mr. Ogunyomi primarily worked as a Team Lead and Geologist/Petrophysicist but also cross-trained in petroleum economics, drilling and reservoir engineering. Mr. Ogunyomi holds a B.S. in Geoscience from Southeast Missouri State University, a M.S. in Petroleum Geology from Oklahoma State University and an M.B.A. from the University of Oklahoma.

Joshua Schmidt


Mr. Joshua Schmidt has served on Ranger's Board since January 2021.  Mr. Schmidt is a Partner at Juniper, Ranger's controlling shareholder. Prior to joining the firm in 2014, he was a portfolio manager for Whiteside Energy Fund, LP. Mr. Schmidt has over fifteen years of experience in the energy industry and has been involved in the formation and management of over ten private energy companies. He currently serves on the boards of several Juniper portfolio companies. Mr. Schmidt received a B.S. in Finance from the University of Notre Dame.

Jeffrey E. Wojahn


Mr. Jeffrey E. Wojahn has served on Ranger's Board since September 2019. Mr. Wojahn served as Executive Vice President of EnCana Corporation from 2003 to 2013 and was President of Encana Oil & Gas (USA) Inc. from 2006 to 2013. Mr. Wojahn held senior management and operational positions in Canada and the United States and has extensive experience in unconventional resource play development. He served as Advisory Board member for Morgan Stanley Energy Partners from October 2014 until 2017. Since March 2017, Mr. Wojahn has served as the Executive Chairman of MiddleFork Energy Partners, a privately held exploration and production company, and also has served as a director of Bonanza Creek Energy, Inc. since November 2014. Mr. Wojahn received his B.S. in Geophysics from the University of Calgary in 1985.