Black Construction Awarded Three Projects in Diego Garcia Totaling $54.5 Million

Tutor Perini Corporation (NYSE: TPC) (the “Company”), a leading civil, building and specialty construction company, announced today that its subsidiary, Black Construction Corporation, in a joint venture with Mace International, has been awarded the following projects, collectively valued at approximately $54.5 million, by the U.S. Naval Facilities Engineering Systems Command, Pacific District.

1. Repairs to North Parking Apron, Phase 2 – This contract, valued at $43,487,800, provides long-term repairs that include the removal and replacement of the existing North Parking Apron and portions of Taxiways Alpha and Papa. Work is anticipated to begin this spring with substantial competition expected in mid-2026.
2. Repairs to Incinerator Building, F-5007 – This contract, valued at $6,497,101, provides for the removal and replacement of the existing incinerator building and associated utility systems. Work is anticipated to begin this spring with substantial competition expected in the spring of 2026.
3. Repair DG1 Road – This contract, valued at $4,547,218, provides for the removal and replacement of certain sections of DG1 Road in Palmsville and Splendidville, including providing new road markings and signage. Work is anticipated to begin this spring with substantial competition expected in the spring of 2025.

The contract values were included in the Company’s backlog beginning in the first quarter of 2024.

About Tutor Perini Corporation

Tutor Perini Corporation is a leading civil, building and specialty construction company offering diversified general contracting and design-build services to private customers and public agencies throughout the world. We have provided construction services since 1894 and have established a strong reputation within our markets by executing large, complex projects on time and within budget, while adhering to strict quality control measures. We offer general contracting, pre-construction planning and comprehensive project management services, including planning and scheduling of manpower, equipment, materials and subcontractors required for a project. We also offer self-performed construction services including site work, concrete forming and placement, steel erection, electrical, mechanical, plumbing and heating, ventilation and air conditioning (HVAC).

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Tutor Perini Corporation Jorge Casado, 818-362-8391 Vice President, Investor Relations and Corporate Communications www.tutorperini.com