Primoris Services Corporation is a holding company of various subsidiaries, which form one of the larger publicly traded specialty construction and infrastructure companies in the United States. Serving diverse end-markets, we provide a wide range of construction, fabrication, maintenance, replacement, water and wastewater, and engineering services to major public utilities, petrochemical companies, energy companies, municipalities, state departments of transportation and other customers. Growing both organically and through acquisitions. The Company’s national footprint now extends nearly nationwide and into Canada.

Polarchem is a proprietary technology which we license from related parties that allows soft online cleaning of industrial boiler heat transfer surfaces. This online cleaning allows users to optimize their boiler system thereby reducing fuel consumption while also decreasing pollution and long-term degradation of their equipment. Our target market includes coal fired power plants, petroleum refineries, waste to energy facilities, biomass facilities, incinerators and other similar combustion operations.

Our Soft Wave technology is a patented technology which enables power plants, office buildings, factories and residential buildings and to run their cooling towers chemical free while meeting cooling tower operational and environmental requirements to control scale and minerals as well as harmful bacteria, while simultaneously delivering substantial reductions in water consumption.

Integrated Electrical Services, Inc. is a holding company that owns and manages subsidiaries operating across a variety of end markets. Our operations are currently organized into four principal business segments, based upon the nature of our current services:

Communications – Nationwide provider of technology infrastructure services to large corporations and independent businesses.

Residential – Regional provider of electrical installation services for single-family housing and multi-family apartment complexes.

Commercial & Industrial – Provider of electrical design, construction, and maintenance services to the commercial and industrial markets in various regional markets and nationwide in certain areas of expertise, such as the power infrastructure market.

Infrastructure Solutions – Provider of electrical and mechanical solutions to domestic and international customers.
Our businesses are managed in a decentralized manner. While sharing common goals and values, each of the Company’s segments manages its own day-to-day operations. Our corporate office is focused on significant capital allocation decisions, investment activities and selection of segment leadership, as well as strategic and operational improvement initiatives and the establishment and monitoring of risk management practices within our segments.
Integrated Electrical Services, Inc. is a Delaware corporation established in 1997 and headquartered in Houston, Texas, with an executive office in Greenwich, Connecticut.

Hill International, Inc., with 4,600 professionals in 100 offices worldwide, provides program management, project management, construction management, construction claims and other consulting services primarily to the buildings, transportation, environmental, energy and industrial markets. According to the edition of Engineering News-Record magazine, Hill is the ninth largest construction management firm and eleventh largest program management firm headquartered in the United States.

We are headquartered in Houston, Texas, and provide our heavy civil marine construction services on, over and under the water in the continental United States (U.S.), Alaska, Canada, and the Caribbean Basin.

Founded in 2000, Ameresco, Inc. is a leading independent provider of comprehensive services, energy efficiency, infrastructure upgrades, asset sustainability and renewable energy solutions for businesses and organizations throughout North America and Europe. Ameresco’s sustainability services include upgrades to a facility’s energy infrastructure and the development, construction and operation of renewable energy plants. Ameresco has successfully completed energy saving, environmentally responsible projects with Federal, state and local governments, healthcare and educational institutions, housing authorities, and commercial and industrial customers. With its corporate headquarters in Framingham, MA, Ameresco has more than 1,000 employees providing local expertise in the United States, Canada, and the United Kingdom.

We operate primarily in the commercial, industrial and institutional HVAC markets and perform most of our services in industrial, healthcare, education, office, technology, retail and government facilities. Approximately 99% of our consolidated revenue was derived from commercial, industrial and institutional customers and multi-family residential projects. Approximately 44% of our revenue was attributable to installation services in newly constructed facilities and 56% was attributable to renovation, expansion, maintenance, repair and replacement services in existing buildings.

We are a holding company of specialty electrical construction service providers that was established in 1995 through the merger of long-standing specialty contractors. Through our subsidiaries, we have served the electric utility infrastructure markets since 1891. Our operations are currently conducted through wholly-owned subsidiaries, including: The L. E. Myers Co.; Harlan Electric Company; Hawkeye Construction, Inc.; Great Southwestern Construction, Inc.; Sturgeon Electric Company, Inc.; MYR Transmission Services, Inc.; MYR Group Construction Canada, Ltd.; MYR Transmission Services Canada, Ltd.; and Northern Transmission Services, Ltd. We provide electrical construction services, and limited gas construction services, through a network of local offices located throughout the United States and Canada. We provide a broad range of services, which includes design, engineering, procurement, construction, upgrade, maintenance and repair services, with a particular focus on construction, maintenance and repair.

Our principal executive offices are located at 1701 Golf Road, Suite 3-1012, Rolling Meadows, Illinois 60008-4210. The telephone number of our principal executive offices is (847) 290-1891.

Argan, Inc. (“Argan”) conducts operations through its wholly-owned subsidiaries, Gemma Power Systems, LLC and affiliates (“GPS”) and Southern Maryland Cable, Inc. (“SMC”), which together are referred to as the “Company,”. Through GPS, we provide a full range of development, consulting, engineering, procurement, construction, commissioning, operations and maintenance services to the power generation and renewable energy markets for a variety of customers including public utilities, independent power project owners, municipalities, public institutions and private industry. Through SMC, we provide telecommunications infrastructure services including project management, construction and maintenance to the federal government, local governments, telecommunications and broadband service providers as well as electric utilities.

Skyline Corporation was originally incorporated in Indiana in 1959, as successor to a business founded in 1951. Skyline Corporation and its consolidated subsidiaries designs, produces and markets manufactured housing, modular housing and park models to independent dealers and manufactured housing communities located throughout the United States and Canada. Manufactured housing is built to standards established by the U.S. Department of Housing and Urban Development, modular homes are built according to state, provincial or local building codes, and park models are built according to specifications established by the American National Standards Institute.

We are a leading infrastructure construction company operating mainly throughout North America across a range of industries. Our primary activities include the engineering, building, installation, maintenance and upgrade of communications, energy and utility infrastructure, such as: wireless, wireline/fiber and satellite communications; petroleum and natural gas pipeline infrastructure; electrical utility transmission and distribution; conventional and renewable power generation; and industrial infrastructure. Our customers are primarily in these industries. Including our predecessor companies, we have been in business for more than 85 years. We offer our services primarily under the MasTec service mark. We have been consistently ranked among the top specialty contractors by Engineering News-Record for the past several years.

Energy Efficiency and Sustainability;

Engineering and Planning;

Economic and Financial Consulting; and

National Preparedness and Interoperability.

We operate our business through a network of offices located primarily in California and New York. We also have operations in Arizona, Florida, Kansas, Oregon, Texas, Washington and Washington, DC. We believe communities of this size are underserved by large outsourcing companies that tend to focus on securing large federal and state projects, and projects for the private sector. We seek to establish close working relationships with our clients and expand the breadth and depth of the services we provide to them over time.

Sterling Construction Company, Inc. was founded in 1991 as a Delaware corporation. Our principal executive offices are located at 1800 Hughes Landing Boulevard, Suite 250, The Woodlands, Texas 77380, and our telephone number at this address is (281) 214-0800. Our construction business was founded in 1955 by a predecessor company in Michigan and is now conducted through our subsidiaries which primarily include: Texas Sterling Construction Co., a Delaware corporation, or “TSC”; Road and Highway Builders, LLC, a Nevada limited liability company, or “RHB”; Road and Highway Builders of California, Inc., a California corporation, or “RHBCa”; Ralph L. Wadsworth Construction Company, LLC, a Utah limited liability company, or “RLW”; J. Banicki Construction, Inc., an Arizona corporation, or “JBC”; and Myers & Sons Construction, L.P., a California limited partnership, or “Myers”. The terms “Company,” “Sterling,” and “we” refer to Sterling Construction Company, Inc. and its subsidiaries except when it is clear that those terms mean only the parent company or a particular subsidiary.

Sterling is a leading heavy civil construction company that specializes in the building and reconstruction of transportation and water infrastructure projects in Texas, Utah, Nevada, Colorado, Arizona, California, Hawaii and other states in which there are construction opportunities. Its transportation infrastructure projects include highways, roads, bridges, airfields, ports and light rail. Its water infrastructure projects include water, wastewater and storm drainage systems.