TETRA TECH INC 8-K

What Happened Tetra Tech, Inc. (TTEK) filed a Form 8-K on March 26, 2026, announcing that Eric W. Thornburg has been appointed to the company’s Board of Directors effective March 30, 2026. He will serve until the next annual meeting of stockholders and will join the Compensation Committee and the Nominating and Corporate Governance Committee.

Key Details

• Appointment effective March 30, 2026; Board will have eight members after his appointment.
• Mr. Thornburg, age 65, most recently served as CEO of H2O America (formerly SJW Group) from 2017–2025 and Chair of its board 2018–2026.
• Non-employee director compensation: $110,000 annual retainer; $2,000 per meeting when board meetings exceed eight per year; annual long-term equity award with $175,000 grant-date fair value (60% performance stock units, 40% restricted stock units), prorated for his service period.
• Mr. Thornburg’s prior roles include CEO of Connecticut Water Service (2006–2017), VP at American Water Works (2003–2006), and President of Missouri American Water (2001–2003). Education: B.A. from Cornell; M.B.A. from Indiana Wesleyan University.

Why It Matters This 8-K tells investors about a governance change: Tetra Tech is adding an experienced water utility and utilities-sector executive to its board, potentially strengthening oversight in areas related to infrastructure and regulated utilities. The filing also discloses the standard non-employee director pay package and committee assignments, which are relevant for evaluating board composition, governance practices, and director-related expenses. A press release announcing the appointment was included as an exhibit to the filing.