Powell Industries, Inc., together with its subsidiaries, designs, develops, manufactures, sells, and services custom-engineered equipment and systems. The company's principal products include integrated power control room substations, custom-engineered modules, electrical houses, medium-voltage circuit breakers, monitoring and control communications systems, motor control centers, switches, and bus duct systems, as well as traditional and arc-resistant distribution switchgears and control gears. Its products have application in voltages ranging from 480 volts to 38,000 volts. The company also provide field service inspection, installation, commissioning, modification and repair, spare parts, retrofit and retrofill components for existing systems, and replacement circuit breakers for switchgear. It serves onshore and offshore production, liquefied natural gas facilities and terminals, pipelines, refineries, and petrochemical plants, as well as electric utility, light rail traction power, mining and metals, pulp and paper, data centers and other municipal, commercial, and industrial markets. The company has operations in the United States, Canada, the Middle East, Africa, Europe, Mexico, and Central and South America. Powell Industries, Inc. was founded in 1947 and is headquartered in Houston, Texas.

Tidewater Inc., together with its subsidiaries, provides offshore support vessels and marine support services to the offshore energy industry through the operation of a fleet of marine service vessels worldwide. It provides services in support of offshore oil and gas exploration, field development, and production, as well as windfarm development and maintenance, including towing of and anchor handling for mobile offshore drilling units; transporting supplies and personnel necessary to sustain drilling, workover, and production activities; offshore construction, and seismic and subsea support; geotechnical survey support for windfarm construction; and various specialized services, such as pipe and cable laying. The company operates anchor handling towing supply vessels, platform supply vessels, crew boats, utility vessels, and offshore tugs. The company serves integrated and independent oil and gas exploration, field development, and production companies; mid-sized and smaller independent exploration and production companies; foreign government-owned or government-controlled organizations, and other related companies; offshore drilling contractors; and other companies, such as offshore construction, windfarm development, diving, and well stimulation companies. Tidewater Inc. was incorporated in 1956 and is headquartered in Houston, Texas.

Genesis Energy, L.P. provides integrated suite of midstream services in crude oil and natural gas industry in the United States. It operates through Offshore Pipeline Transportation, Soda and Sulfur Services, Marine Transportation, and Onshore Facilities and Transportation segments. The Offshore Pipeline Transportation segment engages in offshore crude oil and natural gas pipeline transportation and handling operations, as well as deep water pipeline servicing. This segment also owns interests in offshore crude oil and natural gas pipeline systems, platforms, and related infrastructure. The Soda and Sulfur Services segment produces, markets, and sells soda ash; and provides sulfur removal services. This segment also owns and operates soda ash production facilities, underground trona ore mines and brine solution mining operations and related equipment, and logistics and other assets; and sells sodium hydrosulfide and caustic soda to industrial and commercial companies involved in the mining of base metals. The Marine Transportation segment offers waterborne transportation of petroleum and crude oil in North America. This segment owns a fleet of 91 barges and 42 push/tow boats. The Onshore Facilities and Transportation segment offers onshore facilities and transportation services to crude oil refineries and producers by purchasing, transporting, storing, blending, and marketing crude oil and refined products; and operates trucks, trailers, railcars, and terminals and tankage in various locations along the Gulf Coast. This segment also transports crude oil, as well as owns four onshore crude oil pipeline systems and four operational crude oil rail unloading facilities. The company was incorporated in 1996 and is headquartered in Houston, Texas.

Helix Energy Solutions Group, Inc., together with its subsidiaries, an offshore energy services company, provides specialty services to the offshore energy industry in Brazil, the Gulf of Mexico, the East Coast of the United States, North Sea, the Asia Pacific, and West Africa regions. The company operates through four segments: Well Intervention, Robotics, Production Facilities, and Shallow Water Abandonment segments. It engages in the installation of flowlines, control umbilicals, and manifold assemblies and risers; trenching and burial of pipelines; installation and tie-in of riser and manifold assembly; commissioning, testing, and inspection activities; and provision of cable and umbilical lay, and connection services. The company also provides well intervention, intervention engineering, and production enhancement services; coiled tubing operations; inspection, repair, and maintenance of production structures, trees, jumpers, risers, pipelines, and subsea equipment; and related support services. In addition, it offers reclamation and remediation services; well plug and abandonment services; pipeline, cable and umbilical abandonment services; and site inspections. Additionally, the company offers oil and natural gas processing facilities and services; and fast response system, as well as site clearance and subsea support services. Further, it provides offshore oilfield decommissioning and reclamation, project management, engineered solutions, intervention, maintenance, repair, heavy lift, and commercial diving services. It serves independent oil and gas producers and suppliers, pipeline transmission companies, renewable energy companies, and offshore engineering and construction firms. The company was formerly known as Cal Dive International, Inc. and changed its name to Helix Energy Solutions Group, Inc. in March 2006. Helix Energy Solutions Group, Inc. was incorporated in 1979 and is headquartered in Houston, Texas.

Matrix Service Company provides engineering, fabrication, construction, and maintenance services to support critical energy infrastructure and industrial markets in the United States, Canada, and internationally. The company's Storage and Terminal Solutions segment undertakes work related to aboveground crude oil and refined product storage tanks and terminals; engineering, procurement, fabrication, and construction services related to cryogenic, specialty tanks, and terminals for LNG, NGLs, hydrogen, ammonia, propane, butane, liquid nitrogen/liquid oxygen, and liquid petroleum; and provides plant work, truck and rail loading/offloading facilities, and marine structures, as well as storage tank and terminal maintenance and repair. This segment offers engineered specialty tank products, including geodesic domes, aluminum internal floating roofs, floating suction and skimmer systems, roof drain systems, and floating roof seals. Its Utility and Power Infrastructure segment offers power delivery services, including construction of new substations, upgrades of existing substations, transmission and distribution line installations, and upgrades and maintenance, and emergency and storm restoration services. This segment provides engineering, fabrication, and construction services for LNG utility peak shaving facilities; and construction and maintenance services to power generation facilities, including natural gas fired facilities. The company's Process and Industrial Facilities segment offers plant maintenance and turnarounds for refining and processing of crude oil, fractionating, and marketing of natural gas and natural gas liquids; engineering, procurement, fabrication, and construction for refinery upgrades and retrofits for hydrogen processing, production, loading, and distribution facilities; and constructs thermal vacuum test chambers for aerospace and defense, and other industries. The company was founded in 1984 and is headquartered in Tulsa, Oklahoma.

Orion Group Holdings, Inc. operates as a specialty construction company in the building, industrial, and infrastructure sectors in the United States, Alaska, Hawaii, Canada, and the Caribbean Basin. It operates in two segments, Marine and Concrete. The company provides marine construction services, including construction, restoration, dredging, maintenance, and repair of marine transportation facilities and pipelines, bridges and causeways, and marine environmental structures. Its marine transportation facility projects comprise cruise ship port facilities, private terminals, special-use navy terminals, recreational use marinas and docks, and other marine-based facilities, as well as building or rehabilitating public port facilities for container ship loading and unloading. The company also offers on-going maintenance and repair, inspection, emergency repair, and demolition and salvage services. Its marine pipeline service projects include the installation and removal of underwater buried pipeline transmission lines; the installation of pipeline intakes and outfalls for industrial facilities; the construction of pipeline outfalls for wastewater and industrial discharges; river crossing and directional drilling; the creation of hot taps and tie-ins; and inspection, maintenance, and repair services. The company's bridge and causeway projects include the construction, repair, and maintenance of overwater bridges and causeways, as well as the develops fendering systems in marine environments. The company also provides specialty services, such as design, salvage, demolition, surveying, towing, diving and underwater inspection, excavation, and repair services. In addition, it offers elevated concrete pouring for columns, elevated beams, and structural walls; and light commercial services comprising slabs, sidewalks, ramps, and tilt walls. The company was founded in 1994 and is headquartered in Houston, Texas.

Oil States International, Inc., through its subsidiaries, provides engineered capital equipment and products for the energy, industrial, and military sectors worldwide. The company operates through three segments: Well Site Services, Downhole Technologies, and Offshore/Manufactured Products. The Well Site Services segment offers a range of equipment and services that are used to drill for, establish, and maintain the flow of oil and natural gas from a well throughout its lifecycle. It also provides wireline support, frac stacks, isolation tools, downhole and extended reach activity, well testing and flowback operations, sand control, and land drilling services. The Downhole Technologies segment provides oil and gas perforation systems, and downhole tools in support of completion, intervention, wireline, and well abandonment operations. This segment also designs, manufactures, and markets its consumable engineered products to oilfield service, and exploration and production companies. The Offshore/Manufactured Products segment designs, manufactures, and markets capital equipment utilized on floating production systems, subsea pipeline infrastructure, and offshore drilling rigs and vessels. Its products include flexible bearings, advanced connector systems, high-pressure riser systems, managed pressure drilling systems, deepwater mooring systems, cranes, subsea pipeline products, and blow-out preventer stack integration products. This segment also provides short-cycle products, such as valves, elastomers, and other specialty products that are used in the land-based drilling and completion markets; and other products for use in industrial, military, alternative energy, and other applications. In addition, it offers specialty welding, fabrication, cladding and machining, offshore installation, and inspection and repair services. The company was incorporated in 1995 and is headquartered in Houston, Texas.

SEACOR Marine Holdings Inc. provides marine and support transportation services to offshore oil, natural gas, and windfarm facilities worldwide. Its offshore support and specialty vessels deliver cargo and personnel to offshore installations, including offshore wind farms; handle anchors and mooring equipment for offshore rigs and platforms; assist offshore operations for production and storage facilities; provide construction, well work-over, and offshore wind farm installation and decommissioning support; and carry and launch equipment used underwater in drilling and well installation, maintenance, inspection, and repair, as well as offer accommodations for technicians and specialists, safety support, and emergency response services. As of December 31, 2023, the company operated a fleet of 58 support vessels, of which 55 were owned or leased-in, and three were managed on behalf of unaffiliated third parties. It serves integrated national and international oil companies, independent oil and natural gas exploration and production companies, and oil field service and construction companies, as well as offshore wind farm operators and offshore wind farm installation and maintenance companies. SEACOR Marine Holdings Inc. was founded in 1989 and is headquartered in Houston, Texas.