Tetra Tech names Roger Argus president

Tetra Tech (TTEK) announced two key leadership appointments as part of its continued succession planning and internal talent development. As fiscal year 2026 begins, Roger R. Argus is being promoted to President of Tetra Tech, and Jonathan S. Weiss will be appointed President, Commercial/International Services Group. Argus, currently Executive Vice President of Corporate Development and President of the Commercial/International Services Group, brings 40 years of professional experience, including over 30 years with Tetra Tech. “These appointments reflect the disciplined, forward-looking succession process we have undertaken,” said Dan Batrack, Tetra Tech Chairman and CEO. “Mr. Argus’ leadership, entrepreneurship and deep operational knowledge have contributed significantly to Tetra Tech’s record of success. Together with Tetra Tech’s executive management team, he will continue to advance our strategic objectives and industry-leading performance.”