TTEK · Tetra Tech Inc

Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services in water, environment, and sustainable infrastructure, announced today that the Company was awarded a $100 million multiple-award contract to provide planning and assessment services to support Air Force Civil Engineer Center (AFCEC) projects. Under the 5-year contract, Tetra Tech’s engineers, scientists, and technical specialists will support AFCEC in the development of new and resilient infrastructure for our Air Force bases, through assessing the environmental impacts of projects, conducting mitigation planning, and developing environmental impact statements. Our teams will combine advanced subject matter expertise with in-house Tetra Tech Delta technologies to conduct surveys, perform analyses, and develop innovative predictive models related to airspace; air quality, noise, and acoustics; cultural, biological, and natural resources including water resources; hazardous waste; and

Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services in water, environment, and sustainable infrastructure, announced today that Rijkswaterstaat, the Netherland’s Executive Agency of the Ministry of Infrastructure and Water Management, has selected Tetra Tech to provide engineering and technical services to develop and modernize the country’s water infrastructure networks. Tetra Tech’s water engineers will design high-end solutions to renew and extend the life of water systems and surrounding infrastructure, including flood defense structures, locks, and bridges. Tetra Tech also will leverage in-house, advanced data analytics and laboratory expertise to conduct soil and sediment surveys and support evidence-based decision-making for water system upgrades and new build projects. Our work on this critical national water framework will support infrastructure resilience and long-term water security across the country. “Tetra Tech has

Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services in water, environment, and sustainable infrastructure, announced today that the U.S. Army Corps of Engineers (USACE) Portland District awarded the Company a position on a 5-year multiple-award contract with a shared capacity of $49 million, to provide architectural and engineering (A-E) design services for critical navigation and water control infrastructure. Under the 5-year contract, Tetra Tech engineers, scientists, and technical specialists will provide comprehensive design and technical services to optimize and improve the resilience of a wide range of essential structures such as locks, dams, levees, and flood zone management infrastructure. Our teams will plan, design, and perform advanced computer modeling for dam safety, migratory fish passage, flood risk management, inland and coastal navigation, and other civil works projects. “Tetra Tech has supported USACE to deliver

Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services in water, environment, and sustainable infrastructure, announced today that United Utilities, one of the United Kingdom’s largest listed water companies, selected Tetra Tech’s WaterNet ™ SaaS water network management solution to support its AMP8 leakage and demand reduction commitments. WaterNet is one of the advanced technologies in the Tetra Tech Delta solutions platform. Under the 5-year agreement, Tetra Tech’s WaterNet platform will provide a unified, data-driven approach to finding and addressing water infrastructure delivery systems leakage faster, improving overall water demand management, strengthening network resilience, and delivering clear, consistent reporting. Tetra Tech specialists also will support United Utilities with strategies to leverage WaterNet’s extensive leakage reduction capabilities. WaterNet implementation is planned for the first half of 2026 and will support

Revenue $1.21 billion; Net Revenue $1.04 billion Net Revenue up 8% excluding USAID/DOS and Q1-25 Hurricanes Operating Income $141 million; Adjusted EBITDA $147 million EPS $0.40; Adjusted EPS $0.35 Raising FY26 Net Revenue and EPS guidance Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services in water, environment and sustainable infrastructure, today announced results for the first quarter ended December 28, 2025. Revenue and revenue, net of subcontractor costs (net revenue) 1 , in the first quarter totaled $1.21 billion and $1.04 billion, respectively. Operating income was $141 million and adjusted EBITDA 1 was $147 million; adjusted EBITDA margin up 140 basis points year-over-year. EPS was $0.40 and adjusted EPS 1 was $0.35. Backlog was $3.95 billion at the end of the first quarter. Cash from operations was $72 million in the first quarter and $517 million over the trailing 12 months. Q1 FY26 Highlights (Excluding USAID / DOS) Adjusted

Expanding Its High-End Data Analytics, AI, and Enterprise Tech Services Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services in water, environment, and sustainable infrastructure, announced today that it has acquired Halvik Corp (Halvik), a high-end provider of advisory consulting services focused on advanced data analytics, systems modernization, and cybersecurity for U.S. defense and civilian agencies. “The addition of Halvik expands our high-end analytics and digital solutions across U.S. federal agencies,” said Roger Argus, Tetra Tech President and CEO-designate. “Halvik broadens our relationships with the U.S. Army, Navy, Air Force, and Department of Transportation. Together, we will strengthen resiliency and operational effectiveness using advanced data analytics, artificial intelligence, machine learning, and cybersecurity solutions.” Dr. Madhavi Bathula, Chief Executive Officer of Halvik, said, “We are delighted for our 600

Tetra Tech, Inc. (NASDAQ: TTEK), a leading provider of high-end consulting and engineering services in water, environment, and sustainable infrastructure, announced today that it has signed a definitive agreement to acquire Providence Consulting Group Pty Ltd (Providence), an advisory and project management consultancy based in Australia. Providence brings an exceptional team with a strong record of advisory consulting services supporting defense agencies in resilient planning and sustainment. Their specialists have deep expertise in program delivery, systems engineering, and protective security. This acquisition further expands Tetra Tech’s global advisory consulting services by adding highly complementary defense and mission support services to our existing advisory services in large scale water, energy, and infrastructure program development. “Tetra Tech’s extensive advisory expertise and advanced technology solutions support our clients in effectively and efficiently planning