First Reserve Corporation — Full Portfolio
19 tracked investments · listed companies and verified rows first
IOG Resources is an energy sector investment and advisory firm focused on the upstream oil and gas value chain.
EnergyDallas, US
Marcus Rowland(Manager and Chief Executive Officer)Thomas C. Woolley, Jr.(Executive Vice President)Charles F. Shufeldt(President)Noam P. Berk(Executive Vice President)Tim Woolley
BoardMichael France(Manager)
Allen Steam Turbines is a legacy brand of Trillium Flow Technologies that provides maintenance, repair, and custom engineering of steam turbines for industrial and defense applications across Europe.
Advanced ManufacturingDefense TechEnergyHardwareIoT
Douglas Kitani(Chief Executive Officer)David Paradis(CEO)in
Co-investorsIntersaction
AFG Holdings is a technology and manufacturing specialist that combines precision engineering and OEM processes with innovation to develop solutions for clients worldwide.
Advanced ManufacturingDeep TechHardware
Co-investorsStellex Capital Management
Ascent Resources is a privately held oil and natural gas exploration and production company, and the largest natural gas producer in the state of Ohio.
EnergyOklahoma City, US
Jeffrey A. Fisher(Executive Officer)John K. Reinhart(Executive Officer)
Blue Racer Midstream provides midstream services — including gathering, processing, fractionation, and NGL transportation — for natural gas produced from the Utica Shale and southwestern Marcellus Shale.
Energy
Dresser Utility Solutions makes engineered meters, digital instrumentation, software, and pressure/flow control and repair equipment for utility infrastructure.
Advanced ManufacturingEnergyHardware
Intero provides inspection, environmental, and industrial services for critical infrastructure, helping customers measure methane emissions, ensure pipeline integrity, and manage workplace safety.
CleantechClimate TechEnergyEnterprise SoftwareIoTRoboticsSector Agnostic
Rienk de Vries(CEO)in
Co-investorsRivean Capital
Island Energy Services is an energy company operating in Hawaii.
EnergyHonolulu, US
Jon Mauer(President and CEO)
Co-investorsOne Rock Capital Partners
Lamons is a manufacturer and distributor of custom gaskets, fasteners, hoses, and engineered sealing and attachment solutions, serving industrial customers including the renewable energy and hydrogen sectors.
Advanced ManufacturingEnergyNew Materials
Lindsey Systems supplies systems, hardware, and sensors for the transmission and distribution of electricity, including switchgear sensors, grid resiliency, and smart grid products.
CleantechEnergyHardware
Venterra Group is an offshore wind energy services company that provides engineering, construction, and operations support across the full lifecycle of offshore wind farms.
CleantechClimate TechEnergy
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
AP4Hoover Circular Solutions Ltd.Palmdale SolutionsRefuelTexas American Resources Company II, LLCVitesse Energy, Inc.Vitesse Energy, Inc. (Formerly Lucero Energy Corp.)WGI
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.




