Gary R. Birkenbeuel
Gary R. Birkenbeuel has been a Director of Tetra Tech since 2018.
Mr. Birkenbeuel joined our Board in July 2018. He spent approximately 38 years with Ernst & Young LLP where, among other things, he was the Americas International Financial Reporting Standards Co-Market Leader; Pacific South West Area Industry Leader for Technology, Communications and Entertainment; and Managing Partner of the Pacific South West Assurance Practice. While at Ernst & Young, Mr. Birkenbeuel served as the audit partner in charge of multinational publicly and privately held companies engaged in the aerospace and defense, entertainment, technology, and media industries. Mr. Birkenbeuel retired from Ernst & Young in 2017. He also serves as a director and chairman of the audit and investment committees of a nonprofit entity and is a visiting professor at Claremont McKenna College.