Matt D. GentryMatt Gentry

Founding Member
President and Chief Executive Officer

Matt serves as President and Chief Executive Officer for Monadnock. With more than 15 years of experience in the oil and gas industry, Matt has put his broad geological and engineering skillset to use in the operational management of a wide range of assets. A proven leader, Matt brings in-depth knowledge and expertise in operations, risk management, and technically focused opportunity evaluation, culminating in a successful acquisition and divestiture track record. Matt has developed oil and gas projects that led to the successful divestment of those properties for over $350 million within the Eagle Ford Shale play of South Texas and the Permian Basin’s Wolfcamp Shale play in West Texas. Additionally, he has drilled and completed over 100 vertical and horizontal unconventional wells. Matt’s reputation among his industry peers is evidenced by his recent selection by Oil & Gas Investor magazine as one of the Top 20 oil and gas professionals under the age of 40. Matt’s most recent position was that of Vice President of Engineering and Business Development for Forge Energy, a $400 million EnCap and Pine Brook backed private company. Prior to Forge, Matt served as the Chief Operating Officer for Australian Securities Exchange listed Antares Energy.

Matt has a M.S. degree in geology from Texas A&M University and a B.S. degree in geoscience from Mississippi State University. Additionally, Matt is both a certified petroleum geologist and certified petroleum geophysicist by the American Association of Petroleum Geologists.

David WilliamsonDavid Williams

Founding Member
Vice President, Geoscience

David serves as Vice President of Geoscience at Monadnock. A certified petroleum geologist (AAPG) and certified professional geologist (AIPG), David has more than 15 years of oil and gas experience, having drilled hundreds of wells in a variety of conventional and unconventional assets. As an oil prospector, David takes a total petroleum systems approach and has proven success in both organic growth and exploiting additional value from existing fields. As a member of Pioneer Natural Resources’s New Plays and Shale Technology Team, David was instrumental in the characterization and growth of Pioneer’s North America unconventional asset portfolio inclusive of the Wolfcamp and Spraberry shale plays and helped realize a strategic $300 million acquisition during his tenure on the team. He was heavily involved in growing Pioneer’s Barnett Shale asset, planning and geosteering its first 50 wells in the liquids-rich Combo Play (which resulted in production growth to 10.3 Mboepd at the time of its successful divestiture for $155 million). David’s most recent position was that of Vice President of Geoscience at Forge Energy. At Forge, David grew the successful horizontal San Andres play concept from less than 7,000 gross acres to over 25,000 net acres.

David has a B.S. cum laude in geoscience and M.S. degrees in both geoscience and geographic information sciences from the University of Texas at Dallas.

Adam HowardAdam Howard

Founding Member
Vice President, Engineering

Adam serves as Vice President of Engineering for Monadnock. Adam has applied his technical and business acumen to acquire, study, and develop assets in plays throughout the U.S., South America, Asia, and Europe. Adam has packed nearly 9 years of industry experience with hands-on, value additive results in all play environments: onshore and offshore; conventional and unconventional; vertical and horizontal; primary, secondary, and tertiary projects. Adam blends technical reservoir and production engineering knowledge with extensive experience in financial modeling and risk management at the well, field, and company level. Adam most recently served as Reservoir Engineer for the private equity backed Forge Energy. At Forge, Adam managed a capital program with expenditures over the last two years of $260 million that resulted in drilling 60 horizontal San Andres wells. Additionally, Adam oversaw the production growth of Forge’s San Andres asset from less than 1,000 gross bopd to over 5,000 gross bopd. Prior to Forge, Adam was a Petroleum Engineering Consultant for Netherland, Sewell & Associates. A combination of technical understanding and sound business judgment is why some of the most respected companies in the industry have trusted Adam with their most valuable assets. He started his career as a Reservoir and Production Engineer at ExxonMobil.

Adam earned his B.S. degree in Mechanical Engineering from Texas Tech University.

Kelli RoachKelli Roach

Founding Member
General Counsel and Vice President, Land and Legal

Kelli serves as General Counsel and Vice President of Land and Legal for Monadnock. Kelli is a highly qualified, well-respected legal professional with more than 18 years of legal experience.  She has expertise and extensive experience within all aspects of exploration and production (E&P) projects, including acquisitions, development, and divestitures.  Kelli has negotiated, documented, and closed a broad range of routine and complex E&P transactions, including purchase and sale agreements (with transaction values ranging from $5 million to $200 million).  Her experience also includes conducting and managing the due diligence process for clients buying and selling E&P projects.  As Chief Administrative Officer for the U.S. subsidiary of an Australian public company, and in addition to her role as General Counsel, Kelli managed the coordination of operational, administrative, land, and accounting matters. With highly developed business acumen and a practical application of legal expertise, Kelli has served as a trusted adviser to her clients’ executive teams and boards of directors regarding compliance, risk, and strategic issues. 

Kelli earned a B.A. degree in Political Science and a M.A. degree in International Management from the University of Texas at Dallas and a J.D. from Southern Methodist University.

Keith KimmeKeith-Kimme

Senior Technical Analyst

Keith serves as Senior Technical Analyst for Monadnock.  Previously, he spent over seven years at Netherland, Sewell & Associates where he was an Analyst Coordinator and the lead analyst on his team.  He has evaluated onshore and offshore fields in North and South America, Africa, Asia, Europe, and Australia and has particularly extensive experience studying horizontal plays, having joined the industry near the outset of the shale boom.  As a consultant, Keith used his analytical skills to assist small independents, major oil companies, and national oil companies with reserves and resources estimation, lawsuits, A&D transactions, exploration and development planning, and initial public offerings.

Keith earned a B.S. in Physics from the University of Texas at Austin and a M.S. in Materials Science at the University of Wisconsin - Madison.

Sharon BrunerSharon-Bruner

Office Manager

Sharon serves as Office Manager, Legal Assistant, and Organizational Genius for Monadnock. Prior to joining Monadnock, Sharon spent 14 years in the legal industry as a litigation paralegal working on a multitude of cases, including energy-related disputes.

Sharon earned her B.A. in Historical Studies from the University of Texas at Dallas.