Business Description

Tutor Perini Corporation (together with its consolidated subsidiaries, “Tutor Perini,” the “Company,” “we,” “us,” and “our,” unless the context indicates otherwise) is a leading construction company offering diversified general contracting, construction management and design-build services to private customers and public agencies throughout the world. The Company was formed through the 2008 merger between Tutor-Saliba Corporation and Perini Corporation (“Perini”) and our legacy dates to 1894, when Perini's predecessor businesses began providing construction services. Our corporate headquarters are in Los Angeles (Sylmar), California, and we have various other principal offices throughout the United States and its territories (see Item 2. Properties for a listing of our major facilities). Our common stock is listed on the New York Stock Exchange under the symbol “TPC.” We are incorporated in the Commonwealth of Massachusetts. We are a recognized leader in the construction industry and have built a solid reputation for executing large, complex projects while adhering to strict safety and quality control standards. We offer general contracting, pre-construction planning and comprehensive project management services, and have strong expertise in planning and delivering design-bid-build, design-build, construction management, and public-private partnership (P3) projects. We often utilize our resources and capabilities to self-perform multiple components of our projects, including earthwork, excavation, concrete forming and placement, steel erection, electrical, mechanical, plumbing, heating, ventilation and air conditioning (HVAC), and fire protection. During 2025, we performed work on approximately 1,600 construction projects. We are recognized as one of the leading civil contractors in the United States, as evidenced by our performance on several of the country’s largest mass-transit and transportation projects, such as Newark Liberty International Airport’s AirTrain Replacement project and new Terminal A (“Newark Airport Terminal A”), various components of the East Side Access project, along with the Midtown Bus Terminal Replacement - Phase 1 project, and the Manhattan Tunnel project, all in New York, the Minneapolis Southwest Light Rail project (also known as the METRO Green Line Extension), the California High-Speed Rail System, the Alaskan Way Viaduct Replacement (the “SR 99”) project in Seattle, major portions of the Red Line and Purple Line subway segments of the Los Angeles Metro system, the San Francisco Central Subway extension to Chinatown, and the City Center Guideway and Stations project in Hawaii. We are also recognized as one of the major building contractors in the United States, as evidenced by our performance on several of the country’s largest building development projects, including Hudson Yards and the new Brooklyn and Manhattan Jail projects in New York City, the CityCenter complex and the Cosmopolitan Resort and Casino, both in Las Vegas, as well as several major technology, healthcare and educational facilities in California for prominent customers. Our strengths and expertise in the construction of civil and building infrastructure projects have been augmented by our vertical integration capabilities, which we established more than a decade ago through the acquisitions of various business entities specializing in electrical, mechanical, plumbing, HVAC and other services that enhance our market capabilities and expand our geographic presence. Our vertical integration capabilities, which also involve close interactions between our Civil and Building segment resources on large, complex projects, are a competitive advantage that allow us to self-perform a greater amount of work than our competitors. These capabilities also increase our competitiveness in bidding and our efficiency in managing and executing large projects, and provide us with significant cross-selling opportunities across a broad geographic footprint. 3 Table of Contents Business Segment Overview Our business is conducted through three segments: Civil, Building and Specialty Contractors. Civil Segment Our Civil segment specializes in public works construction and the replacement and reconstruction of infrastructure across several major geographic regions of the United States.…