Tetra Tech announced that it has been selected for the U.S. Missile Defense Agency’s SHIELD (Scalable Homeland Innovative Enterprise Layered Defense) indefinite-delivery/indefinite-quantity contract, which carries a program ceiling of $151 billion. Under this agreement, Tetra Tech will deliver a broad suite of engineering, consulting and rapid-response capabilities to support layered homeland missile defense programs. The win underscores the company’s expertise in systems integration and advanced analytics, leveraging its more than 25,000-strong workforce and Leading with Science® methodology to accelerate the delivery of innovative solutions for environment, infrastructure and defense customers.

Tetra Tech has scheduled the release of its first quarter 2026 financial results for Wednesday, January 28, 2026, immediately after market close. The following morning, Thursday, January 29, 2026 at 8:00 a.m. Pacific Time, management will host a live audio-visual webcast to discuss reported revenues, margins and forward guidance. Investors can access the webcast via a link on tetratech.com/investors, with a replay available following the call. This event will provide insights into the company’s project backlog, regional growth trends and any shifts in sustainable infrastructure spending that may impact near-term performance.