TETRA TECH INC 8-K

What Happened

• Tetra Tech, Inc. (TTEK) filed an 8-K on February 20, 2026 reporting that, following the company's annual meeting on February 19, 2026, Mr. Argus was appointed as a member of the Board of Directors in connection with his previously announced promotion to Chief Executive Officer.
• The Board will consist of seven members, including Mr. Argus; he will not serve on any Board committees.

Key Details

• Appointment effective February 19, 2026 (date of annual meeting).
• Board size after appointment: seven members.
• Mr. Argus has been with Tetra Tech for more than 30 years and became CEO in February 2026; he served as President since October 2025.
• Prior roles include Executive VP, Corporate Development (Nov 2024–Oct 2025); President, Commercial/International Services Group (Oct 2023–Oct 2025); Senior VP & President, Government Services Group (Oct 2018–Oct 2024); and President, U.S. Government Division (Oct 2017–Nov 2024).

Why It Matters

• Governance: Adding the newly promoted CEO to the Board aligns executive leadership and board oversight, a common step after a CEO transition.
• Continuity and experience: Mr. Argus is an internal hire with 30+ years at Tetra Tech and extensive leadership experience across the company’s business groups, which may signal continuity in strategy and operations.
• Board role: The filing notes he will not sit on board committees, which affects how responsibilities and oversight are distributed among directors.

Filed pursuant to Form 8-K on February 20, 2026 (TTEK).