Berkshire Hathaway Inc., through its subsidiaries, engages in the insurance, freight rail transportation, and utility businesses worldwide. The company provides property, casualty, life, accident, and health insurance and reinsurance; and operates railroad systems in North America. It also generates, transmits, stores, and distributes electricity from natural gas, coal, wind, solar, hydroelectric, nuclear, and geothermal sources; operates natural gas distribution and storage facilities, interstate pipelines, liquefied natural gas facilities, and compressor and meter stations; and holds interest in coal mining assets. In addition, the company manufactures boxed chocolates and other confectionery products; specialty chemicals, metal cutting tools, and components for aerospace and power generation applications; flooring products; insulation, roofing, and engineered products; building and engineered components; paints and coatings; and bricks and masonry products, as well as offers manufactured and site-built home construction, and related lending and financial services. Further, it provides recreational vehicles, apparel and footwear products, jewelry, and custom picture framing products, as well as alkaline batteries; castings, forgings, fasteners/fastener systems, aerostructures, and precision components; and cobalt, nickel, and titanium alloys. Additionally, the company distributes televisions and information; franchises and services quick service restaurants; distributes electronic components; and offers logistics services, grocery and foodservice distribution services, and professional aviation training and shared aircraft ownership programs. It also retails automobiles; furniture, bedding, and accessories; household appliances, electronics, and computers; jewelry, watches, crystal, china, stemware, flatware, gifts, and collectibles; kitchenware; and motorcycle clothing and equipment. The company was incorporated in 1998 and is headquartered in Omaha, Nebraska.

Caterpillar Inc. manufactures and sells construction and mining equipment, off-highway diesel and natural gas engines, industrial gas turbines, and diesel-electric locomotives in worldwide. Its Construction Industries segment offers asphalt pavers, compactors, road reclaimers, forestry machines, cold planers, material handlers, track-type tractors, excavators, telehandlers, motor graders, and pipelayers; compact track, wheel, track-type, backhoe, and skid steer loaders; and related parts and tools. The company's Resource Industries segment provides electric rope and hydraulic shovels, draglines, rotary drills, hard rock vehicles, tractors, mining trucks, wheel loaders, off-highway and articulated trucks, wheel tractor scrapers and dozers, fleet management products, landfill and soil compactors, machinery components, autonomous ready vehicles and solutions, work tools, and safety services and mining performance solutions, as well as related parts and services. Its Energy & Transportation segment offers reciprocating engine powered generator sets; reciprocating engines, drivetrain, and integrated systems and solutions; turbines, centrifugal gas compressors, and related services; and diesel-electric locomotives and components, and other rail-related products. The company's Financial Products segment provides operating and finance leases, installment sale contracts, revolving charge accounts, repair/rebuild financing services, working capital loans, and wholesale financing; and insurance and risk management products and services. Its All Other Operating segment offers filters and fluids, undercarriage, ground engaging tools, fluid transfer products, precision seals, and rubber sealing and connecting components; parts distribution; logistics solutions and distribution services; brand management and marketing strategy services; and digital investments services. Caterpillar Inc. was founded in 1925 and is headquartered in Irving, Texas.

Trane Technologies plc, together with its subsidiaries, designs, manufactures, sells, and services of solutions for heating, ventilation, air conditioning, custom, and custom and transport refrigeration in Ireland and internationally. It offers air conditioners, exchangers, and handlers; airside and terminal devices; air sourced heat pumps, auxiliary power units; chillers; coils and condensers; gensets; dehumidifiers; ductless; furnaces; home automation products; humidifiers; indoor air quality assessments and related products; large and light commercial unitary products; refrigerant reclamation products; thermostats/controls; transport heater products; variable refrigerant flow products; and water source heat pumps. The company also provides building management, telematic, control, energy efficiency and infrastructure program, geothermal, thermal energy, thermostats, rate chambers, package heating and cooling, temporary heating and cooling, and unitary systems; bus, rail, and multi-pipe heating, ventilation, and air conditioning systems; and container, diesel-powered, truck, industrial, rail, self-powered truck, trailer, and vehicle-powered truck refrigeration and air filtration systems, as well as aftermarket and OEM parts and supplies. In addition, it offers energy and facility management, installation and performance contracting, repair and maintenance, and rental services. It markets and sells its products under the Trane and Thermo King brands through sales offices, distributors, and dealers; and through sales and service companies with a supporting chain of distributors. The company was formerly known as Ingersoll-Rand Plc and changed its name to Trane Technologies plc in March 2020. Trane Technologies plc was founded in 1885 and is headquartered in Swords, Ireland.

Curtiss-Wright Corporation, together with its subsidiaries, provides engineered products, solutions, and services mainly to aerospace and defense, commercial power, process, and industrial markets worldwide. It operates through three segments: Aerospace & Industrial, Defense Electronics, and Naval & Power. The Aerospace & Industrial segment offers industrial and specialty vehicle products, such as power management electronics, traction inverters, transmission shifters, and control systems; sensors, controls, and electro-mechanical actuation components used on commercial and military aircraft; and surface technology services including shot peening, laser peening, and engineered coatings. The Defense Electronics segment provides commercial off-the-shelf embedded computing board-level modules and processing equipment, data acquisition and flight test instrumentation equipment, integrated subsystems, instrumentation and control systems, tactical communications solutions; and electronic stabilization products, and weapons handling systems; avionics and electronics; flight test equipment; and aircraft data management solutions. The Naval & Power segment offers main coolant pumps, power-dense compact motors, generators, steam turbines, valves, and secondary propulsion systems; energy absorbers, retractable hook cable systems, net-stanchion systems and mobile systems to support fixed land-based arresting systems; hardware, valves, fastening systems, specialized containment doors, airlock hatches, and spent fuel management products; reactor coolant pumps and control rod drive mechanisms for commercial nuclear power plants, as well as various nuclear reactor technologies. This segment furnishes severe-service valve technologies and services, heat exchanger repair, and piping test and isolation products, and offers ship repair and maintenance for the U.S. navy. Curtiss-Wright Corporation was incorporated in 1929 and is headquartered in Davidson, North Carolina.

ITT Inc., together with its subsidiaries, manufactures and sells engineered critical components and customized technology solutions for the transportation, industrial, and energy markets in the United States and internationally. The Motion Technologies segment manufactures brake pads, shims, shock absorbers, and energy absorption components; and sealing technologies primarily for the transportation industry, including passenger cars, trucks, light- and heavy-duty commercial and military vehicles, buses, and trains. This segment sells its products under ITT Friction Technologies, KONI, Wolverine Advanced Materials, Axtone, Novitek, and GALT. brand names. The Industrial Process segment provides industrial pumps, valves, and plant optimization and remote monitoring systems and services; and aftermarket solutions, such as replacement parts and services. It serves various customers in industries, such as chemical, energy, mining, and other industrial process markets. This segment sells its products under Goulds Pumps, Bornemann, Engineered Valves, PRO Services, C'treat, i-ALERT, Rheinhütte Pumpen, and Habonim brand names. The Connect & Control Technologies segment designs and manufactures a range of engineered connectors and specialized products for critical applications supporting various markets, including aerospace and defense, industrial, transportation, medical, and energy. This segment provides connector products, such as circular, rectangular, radio frequency, fiber optic, D-sub miniature, micro-miniature, and cable assemblies; and control products consist of highly engineered actuation, flow control, energy absorption, environmental control, and composite component solutions for the aerospace, defense, and industrial markets under Cannon, VEAM, BIW Connector Systems, Aerospace Controls, Enidine, Compact Automation, Neo-Dyn Process Controls, Conoflow, and Micro-Mode brand names. The company was incorporated in 1920 and is headquartered in Stamford, Connecticut.

WESCO International, Inc. provides business-to-business distribution, logistics services, and supply chain solutions in the United States, Canada, and internationally. It operates through three segments: Electrical & Electronic Solutions (EES), Communications & Security Solutions (CSS), and Utility and Broadband Solutions (UBS). The EES segment supplies products and supply chain solutions, including electrical equipment and supplies, automation and connected devices, security, lighting, wire and cable, and safety, as well as maintenance, repair, and operating (MRO) products. This segment also offers contractor solutions, direct and indirect manufacturing supply chain optimization programs, lighting and renewables advisory services, and digital and automation solutions. The CSS segment operates in the network infrastructure and security markets. This segment sells products directly to end-users or through various channels, including data communications contractors, security, network, professional audio/visual, and systems integrators. It also provides safety and energy management solutions. The UBS segment offers products and services to investor-owned utilities; public power companies; and service and wireless providers, broadband operators, and contractors. This segment's products include wire and cables, transformers, transmission and distribution hardware, switches, protective devices, connectors, conduits, pole line hardware, racks, cabinets, safety and MRO products, and point-to-point wireless devices. This segment also offers various service solutions, including fiber project management, high and medium voltage project design and support, pre-wired meters and capacitor banks, meter testing and metering infrastructure installation, personal protective equipment dielectric testing, and tool repair, as well as emergency response, storage yard, materials, and logistics management. The company was founded in 1922 and is headquartered in Pittsburgh, Pennsylvania.

L.B. Foster Company provides engineered and manufactured products and services for the building and infrastructure projects in the United States, Canada, the United Kingdom, and internationally. It operates through two segments: Rail, Technologies, and Services; and Infrastructure Solutions. The Rail, Technologies, and Services segment offers new rail to passenger and short line freight railroads, industrial companies, and rail contractors, as well as used rails; rail accessories, such as rack spikes, bolts, angle bars, tie plates, and other products; insulated rail joints and related accessories; fixation fasteners, coverboards, and special accessories; and trackwork products. This segment also provides engineered concrete railroad ties, friction management products and application systems, railroad condition monitoring systems and equipment including wheel impact load detection systems, wayside data collection and management systems, and rockfall, flood, earthworks, and bridge strike monitoring; and aftermarket services. The Infrastructure Solutions segment manufactures precast concrete products for use as restrooms, concession stands, and protective storage buildings under the CXT brand for national, state, and municipal parks; and manufactures sounds walls, bridge beams, box culverts, septic tanks, and other custom pre-stressed and precast concrete products. This segment also provides steel bridge products; corrosion protection solutions; concrete-reinforced steel grid decking, open steel grid deck, aluminum bridge railing, and stay-in-place steel bridge forms; cuts, threads, and paints pipe; threading services for water well applications; protective pipeline coating services; and turnkey solutions for metering and injection systems for oil and gas markets. L.B. Foster Company was founded in 1902 and is headquartered in Pittsburgh, Pennsylvania.

Westport Fuel Systems Inc. engages in the engineering, manufacturing, and supplying alternative fuel systems and components for use in transportation applications in Europe, Asia, North America, South America, and internationally. The company operates through two segments, Original Equipment Manufacturers and Independent Aftermarket. It offers alternative fuel systems and components, such as liquefied petroleum gas (LPG), compressed natural gas (CNG), liquefied natural gas (LNG), renewable natural gas or biomethane, and hydrogen; and pressure regulators, injectors, electronic control units, valves and filters, complete bi-fuel, mono-fuel and dual-fuel LPG and natural gas conversion kits and high-pressure hydrogen components. The company provides Westport's LNG high pressure direct injection 2.0 fuel system and bi-fuel products; offers turnkey solutions covering all process phases, including prototyping, development, calibration, validation, homologation, vehicle conversion and logistic services, as well as systems for diesel-powered vehicles; and supplies hydrogen fuel system components for light, medium, and heavy-duty applications. It offers its products under the AFS, BRC, Emer, GFI, HPDI, Stako, Prins, Zavoli, OMVL, TA Gas Technology, Vialle, and Valtek brands. The company was formerly known as Westport Innovations Inc. and changed its name to Westport Fuel Systems Inc. in June 2016. Westport Fuel Systems Inc. was incorporated in 1995 and is headquartered in Vancouver, Canada.