Thomas D. Brisbin has served as our Chairman of the Board since November 2016 and a member of the Board since 2007. Dr Brisbin also served as our Chief Executive Officer from April 2007 to December 2023 and as our President from 2007 to November 2016.
Dr. Brisbin previously was vice president of and consultant for AECOM Technology Corporation, or AECOM, a company focused on infrastructure, environment and facilities engineering contracts, from spring 2004 until he joined us. Prior to joining AECOM, Dr. Brisbin was chief operating officer and executive vice president of Tetra Tech, Inc., or Tetra Tech, a leading provider of consulting, engineering and technical services, for five years. Prior to that, he was employed by Planning Research Corporation, or PRC, a systems analysis and management consulting company and wholly-owned subsidiary of The Black & Decker Corporation, from 1978 to 1995 and was co-founder and President of PRC Environmental Management, Inc. During his tenure at PRC, he was involved in all aspects of operations, marketing and finance. Before joining PRC, he was a research associate at Argonne National Laboratory. He has also served as an adjunct professor at the Illinois Institute of Technology.
Dr. Brisbin holds a B.S. degree from Northern Illinois University and a Ph.D. in Environmental Engineering from Illinois Institute of Technology. He also completed Harvard Business School’s Advanced Management Program in 1988. Dr. Brisbin, as our current Chairman of the Board and Chief Executive Officer and our prior President, brings his in-depth knowledge of the day-to-day operations of the Company and its industry to the Board, providing valuable insight to the Board as it reviews our operations, growth and financial prospects. In addition, we believe that his experience as an executive officer at Tetra Tech, a publicly traded engineering and consulting company, benefits our Board by increasing his knowledge of our industry and effective public company corporate governance.