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Natural Gas Services Group, Inc. is a leading provider of small, medium and large horsepower compression equipment to the oil and natural gas industry.

We focus primarily on the nonconventional natural gas and oil production business in the United States. We manufacture, fabricate and rent natural gas compressors that enhance the production of oil and natural gas wells and provide maintenance services for those compressors.

  • Headquartered in Midland, TX
  • Total Fleet Horsepower: exceeds 500,000 (50HP to 2500HP units)
  • Founded in 1998/IPO in 2002
  • Listed on NYSE in 2008
  • Only rental company with proprietary compressor brand (CiP)

Board of Directors

Stephen C. Taylor

Chairman of the Board

Stephen C. Taylor, served as President and Chief Executive Officer from January 2005 until his retirement, effective May 17, 2022. He also served as Interim CEO from November 11th 2022 to February 12th 2024 and Interim President from November 11th 2022 to October 9th 2023.

Mr. Taylor was elected as a Director of Natural Gas Services Group at the Annual Meeting of Shareholders in June 2005. Effective January 1, 2006, he was appointed Chairman of the Board. Immediately prior to joining Natural Gas Services Group, Mr. Taylor held the position of General Manager − US Operations for Trican Production Services, Inc. from 2002 through 2004. Mr. Taylor joined Halliburton Resource Management in 1976, becoming its Vice President − Operations in 1989. Beginning in 1993, he held multiple senior level management positions with Halliburton Energy Services until 2000 when he was elected Senior Vice President/Chief Operating Officer of Enventure Global Technology, LLC, a joint-venture deep water drilling technology company owned by Halliburton Company and Shell Oil Company. Mr. Taylor elected early retirement from Halliburton Company in 2002 to join Trican Production Services, Inc. Mr. Taylor holds a Bachelor of Science degree in Mechanical Engineering from Texas Tech University and a Master of Business Administration degree from the University of Texas at Austin.

Mr. Taylor’s senior management experience in the natural resources industry provides the Board and our company with significant insight into our business. Mr. Taylor’s engineering and advanced business training uniquely qualifies him to provide leadership, technical expertise and financial acumen to our Board.


Justin C. Jacobs

Chief Executive Officer / Director

Mr. Jacobs was named the Chief Executive Office of Natural Gas Services Group, Inc. in February 2024. Prior to Mr. Jacobs’ employment with the Company, he was a Managing Director and a member of the management committee of Mill Road Capital Management LLC. Mill Road Capital Management is an investment firm focused on investments in small, publicly traded companies. The firm manages multiple funds with approximately $1.0 billion of assets under management. Mr. Jacobs joined Mill Road in 2005, prior to the initial closing of the first fund, Mill Road Capital I. From 1999 to 2004, Mr. Jacobs was employed at LiveWire Capital, an investment and management group backed primarily by The Blackstone Group and Thomas Lee Partners that focused on operationally intensive buyouts of middle market companies. While employed at LiveWire, he held various operational positions in numerous portfolio companies, including interim Chief Operating Officer, in addition to investment responsibilities. Before joining LiveWire, Mr. Jacobs was an investment professional in the private equity group at The Blackstone Group from 1996 to 1999.

Mr. Jacobs is also currently a member of the Board of Directors of Swiss Water Decaffeinated Coffee, Inc. He has previously served as a member of the Boards of Directors of numerous public and private companies. Mr. Jacobs holds a B.S. from the McIntire School of Commerce at the University of Virginia with concentrations in accounting and finance.

Mr. Jacobs provides the Board and Company with more than 25 years of experience as a public investor, private equity investor, operator, and member of Boards of Directors; he also has significant experience in turnaround situations. He has expertise in capital markets transactions, mergers and acquisitions, capital allocation and strategic reviews, as well as significant experience with executive compensation, shareholder communications and the development of both short-and long-term strategic growth plans. In addition, he has significant experience in both operational and oversight roles, particularly with small, publicly traded companies, as well as corporate governance practices and shareholder value creation.


David L. Bradshaw


David L. Bradshaw, joined our board in December of 2011. On May 17, 2022, Mr. Bradshaw was appointed as the Lead Independent Director at the time John W. Chisholm was appointed as Interim Chief Executive Officer. Since 2005, Mr. Bradshaw has acted as a consultant in the oil and gas exploration and production sector and has overseen his investments in this area. From August 2007 through November 2009, Mr. Bradshaw served as a Director and Audit Committee Chairman for Triangle Petroleum, a publicly traded company listed on the American Stock Exchange. From November 2007 through November 2008, Mr. Bradshaw served as a Director for Comet Ridge Limited, an Australian company listed on the Australian Securities Exchange. From 1986 to 2005, Mr. Bradshaw worked for Tipperary Corporation, a U.S. public company listed on the American Stock Exchange. During his tenure at Tipperary, the company was involved in oil and gas exploration and production, and natural gas processing and transportation. He held the positions of Chief Executive Officer from 1996 to 2005, Chairman of the Board from 1997 to 2005, Chief Financial Officer from 1990 to 1996 and Chief Operating Officer from 1993 to 1996. From 1999 to 2005, Mr. Bradshaw also served as Chief Executive Officer and Chairman of Tipperary Oil & Gas (Australia) Pty Ltd, a subsidiary of Tipperary, which explored for and produced natural gas in Queensland, Australia. From 1983 to 1986, Mr. Bradshaw was an owner and officer of Bradcorp, Inc., a private exploration and production company. Prior to this, Mr. Bradshaw spent six years in public accounting serving predominantly oil and gas clients. Mr. Bradshaw graduated from Texas A&M University with a BBA in Accounting in 1976 and a MBA in 1977, and is also a Certified Public Accountant.

Mr. Bradshaw's educational and professional training and achievements as a Certified Public Accountant and MBA, along with his past experience as both a Chief Financial Officer and Chief Executive Officer of a public company involved in the natural resources industry, provides us with considerable accounting and corporate finance skills. In addition, Mr. Bradshaw's career has spanned over forty years in the oil and gas industry and as a public accountant. His executive management positions in both private and public companies bring us significant leadership, planning and management skills and background.


Georganne Hodges


Ms. Hodges has more than 30 years of wholesale and retail energy experience, including national public accounting firm experience and extensive experience across the energy industry value chain. She was most recently Executive Vice President of Supply, Trading & Logistics at Motiva Enterprises, LLC, until January 2023. Prior to joining Motiva, she held the position of CFO with Spark Energy, where she successfully completed the company’s initial public offering as well as several acquisitions. She also held the position of CFO with Direct Energy, as well as other senior financial roles since beginning her career with Arthur Andersen in 1987. Since March 2023, she has served as a member of the board of directors and Audit Committee of PBF Energy (NYSE:PBF). Since 2022, she has served as a member of the board of directors of BWC Terminals LLC, where she serves on the Audit Committee and the Nominating and Corporate Governance Committee. Beginning in May 2021, she served as a member of the board of directors of TransAlta Renewables Inc. (formerly (TSX: RNW)) where she was the Chair of the Audit Committee until her resignation from the Board in early October 2023 in connection with an acquisition of that company. Ms. Hodges holds a BBA in Accounting and Finance from the Hankamer School of Business at Baylor University.


Nigel J. Jenvey


Nigel. J. Jenvey, was appointed as a Director of Natural Gas Services Group in April 2021. Mr. Jenvey is currently Executive - Strategy & Growth Initiatives at Baker Hughes and serves as a board member for their interests in a hydrogen production technology company called Ekona Power and the Long Duration Energy Storage Council, and previously held the position of Global Head of Carbon Management at their consultancy Gaffney, Cline & Associates. Prior to joining Baker Hughes, Mr. Jenvey spent eight years at BP as the company’s head of Carbon, Capture, Use and Storage (CCUS) and carbon solutions manager. He also led similar efforts at Maersk Oil as Technical Director of carbon & climate, and served in various managerial and project leadership roles at Royal Dutch Shell, including Shell’s global Enhanced Oil Recovery (EOR) Center of Expertise and European operating business. He began his career as a petroleum engineer at Texaco in 1995 supervising offshore oil and gas production operations in the North Sea. Mr. Jenvey is an industry leader in Carbon Management and expert in CCUS having been involved in leading projects across the world since 2004. These have included providing study leadership to the National Petroleum Council, industry capability development in the Society of Petroleum Engineers, and provision of advise to various major energy companies in the US and Canada. Mr. Jenvey is the Editor of the annual Decarbonization feature in the SPE Journal of Petroleum Technology and has been a peer reviewer to the International Energy Agency. Mr. Jenvey has also provided testimony to Congress on CO2 Capture technologies. Mr. Jenvey holds a Bachelor degree (Hons.) in Mining Engineering from the University of Leeds and both a Diploma and a Master of Science degree in Petroleum Engineering from Imperial College in London.

Mr. Jenvey brings significant carbon management, sustainability and Environmental, Social and Governance (“ESG”) experience to our Board. His experience of working with companies, investors, governments, academia, and non-governmental organizations provides us a wealth of knowledge and insight regarding the challenges and solutions that exist for the oil and gas industry, and adds to our Board’s capabilities to successfully guide the Company through these matters that are impacting our business and industry.


Donald J. Tringali


Donald J. Tringali, serves as the Chief Executive Officer of Augusta Advisory Group, a boutique financial and business consulting firm providing a full range of executive, operations and corporate advisory services to companies, a position he has held since founding the firm in 2001. Prior to founding Augusta Advisory Group, Mr. Tringali served as the Executive Vice President of Telemundo Group, Inc., a major media company serving the Hispanic population in the United States, from 1996 to 2001. Mr. Tringali has extensive experience serving on the boards of directors of public and private companies, including service as chairman, as well as on the audit, compensation, and nominating and governance committees of those companies. He currently serves on the boards of directors of Wavedancer, Inc., a Nasdaq-traded provider of information technology consulting and software development services for the government and the private sector, Swiss Water Decaffeinated Coffee, Inc., a green coffee decaffinator traded on the Toronto Stock Exchange, and POSaBIT Systems Corporation, a point-of-sale payments company focusing on the cannabis industry that is traded on the Canadian Stock Exchange. Mr. Tringali served as a director, and later as the Chairman of the Board, of National Technical Systems, Inc., a Nasdaq-traded international testing and engineering firm, from 1999 through its sale to a private equity firm in 2013. He is the former Executive Chairman of the Board of Cartesian, Inc., a Nasdaq-traded international telecommunications consulting company that was sold to a private equity group in 2018. Mr. Tringali began his career as a corporate attorney in Los Angeles, where he represented public and private companies in general business matters and mergers and acquisitions transactions. Mr. Tringali holds a Bachelor of Arts in Economics from UCLA and a Juris Doctor from Harvard Law School.

Mr. Tringali’s extensive board experience, including as a member or chairman of audit, compensation, and nominating and governance committees, combined with his experience as a public company executive, will enable him to contribute valuable insights into effective governance and oversight systems at the Company that will improve value for all shareholders.

Mr. Tringali was appointed to the Board pursuant to a Cooperation Agreement entered into by and among the Company and entities affiliated with Mill Road Capital Management LLC.


Executive Team

Justin C. Jacobs

Chief Executive Officer

^ See Bio Above ^


Brian L. Tucker

President and Chief Operating Officer

Brian L. Tucker was appointed President and Chief Operation Officer of Natural Gas Services on October 10th 2023. Most recently, Brian served as a Senior Vice President Operations for Patterson UTI Energy. Immediately before his time at Patterson, he held the role of Chief Operating Officer of Pioneer Energy Services. During his time at Pioneer, Brian also held the roles of Senior Vice President Operations and Drilling/Well Services President before being named the COO in 2019. Prior to joining Pioneer, Mr. Tucker was a Vice President for Helmerich and Payne (H&P) serving as the South Texas Vice President of Operations from 2010 to 2012. From 2004 to 2010, Mr. Tucker served as drilling engineer and operations manager for the Barnett Shale, South Texas, and West Texas operations for H&P. Originally from Odessa TX, Mr. Tucker served eight years as an officer in the U.S. Army, is a West Point graduate with a Bachelor of Science in Systems Engineering and completed the Harvard Business School Advanced Management Program in 2014. He currently serves as a board member of Catholic Charities Archdiocese of San Antonio.

Mr. Tucker brings over 27 years of leadership experience with 20 years focused on managing operations in this industry. He has managed operations in the Drilling, Completion, and Production Service business lines.


James R. Hazlett

Vice President and Chief Technical Officer

James R. Hazlett, currently our Chief Technical Officer, has served in this capacity and as our Vice President-Technical Services since June 2005. He also served as Vice President of Sales of Screw Compression Systems, Inc. from 1997 until June 2007 when Screw Compression Systems, Inc. was merged into Natural Gas Services Group. After the merger in June 2007, Mr. Hazlett continues to remain employed by Natural Gas Services Group as Vice President-Technical Services. From 1982 to 1996, Mr. Hazlett served in management roles for Ingersoll Rand/Dresser Rand, working with compression of all types in several different departments from sales and service to engineering. From 1978 to 1982, Mr. Hazlett was employed by the down-hole tool division of Hughes Tool, designing and installing gas lift and plunger systems. Mr. Hazlett holds a Bachelor of Science degree from the College of Engineering at Texas A&M University and has over 40 years of industry experience.


John Bittner

Interim Chief Financial Officer

John Bittner is currently a Senior Managing Director at Accordion Partners,  a consulting firm focused on the Office of the CFO.  Mr. Bittner has over 25 years of experience in advising companies in transition and serving in C-level, including CFO and COO.   Mr. Bittner has also served in the role as an independent member of boards of director.  He was previously a partner in the advisory practices of both PwC and Grant Thornton and is a licensed CPA in the state of Texas.  Mr. Bittner holds a Master of Business Administration degree from the University of Michigan and Bachelor of Business Administration degree with a double major in accounting and finance from Texas A&M University.