/Investor DB

First Reserve Corporation — Full Portfolio

19 tracked investments · listed companies and verified rows first

IOG Resourcesiogresources.cominJun 2017✓ verified

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)

Trilliumflowtrilliumflow.comin𝕏✓ verified

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

AFGlobal Corporationafgholdings.comMay 2017

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, LLCascentresources.com

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, LLCblueracermidstream.com

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, LLCdresserutility.com

Dresser Utility Solutions makes engineered meters, digital instrumentation, software, and pressure/flow control and repair equipment for utility infrastructure.

Advanced ManufacturingEnergyHardware

Intero Integrity Servicesintero-integrity.comin𝕏Apr 2018

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 Servicesislandenergyservices.com

Island Energy Services is an energy company operating in Hawaii.

EnergyHonolulu, US

Jon Mauer(President and CEO)

Co-investorsOne Rock Capital Partners

Lamonslamons.com

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 Systemslindsey-usa.com

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 Plcventerra-group.com

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.