Board of Directors


Paul R. Johnston, Ph.D.
Chairman of the Board of Directors

Paul Johnston

Dr. Johnston joined the Company in 1981. He was promoted to Principal Engineer in 1987 and to Vice President in 1996. In 1997, he assumed responsibility for the firm’s network of offices. In 2003 he was appointed Chief Operating Officer and added responsibility for the Health and Environmental Groups. In 2006, he assumed line responsibility for all of the firm’s consulting groups. Dr. Johnston was named President in May 2007. He was named Chief Executive Officer and elected to the Board of Directors in May 2009. Dr. Johnston stepped down from his position as Chief Executive Officer and served as Executive Chairman of the Board of Directors from May 2018 to May 2019.

Dr. Johnston received his Ph.D. (1981) in Civil Engineering and M.S. (1977) in Structural Engineering from Stanford University. He received his B.A.I. (1976) in Civil Engineering with First Class Honors from Trinity College, University of Dublin, Ireland, where he was elected a Foundation Scholar in 1975. Dr. Johnston is a Registered Professional Civil Engineer in the State of California and a Chartered Engineer in Ireland.

The Company believes that Dr. Johnston's service as Chief Executive Officer of the Company, and extensive and unique experience with the operations of the Company, qualifies him to serve as a director of the Company.

Catherine Corrigan, Ph.D.
President & Chief Executive Officer

Catherine Ford Corrigan

Dr. Corrigan joined the Company in 1996. She was promoted to Principal in the Biomechanics practice in 2002 and was appointed Group Vice President in May 2012. Dr. Corrigan was named President in July 2016. She was named Chief Executive Officer and elected to the Board of Directors in May 2018. 

Dr. Corrigan earned her Ph.D. (1996) in Mechanical Engineering and Medical Physics and M.S. (1992) in Mechanical Engineering from the Massachusetts Institute of Technology and her B.S. in Bioengineering from the University of Pennsylvania. Prior to joining Exponent, Dr. Corrigan was a researcher in the Orthopaedic Biomechanics Laboratory at Beth Israel Hospital and Harvard Medical School. 

The Company believes that Dr. Corrigan's service as President and Chief Executive Officer of the Company, and extensive and unique experience with the operations of the Company, qualifies her to serve as director of the Company.

George Brown

George Brown


Mr. Brown joined the Board in October 2020. Mr. Brown has been an attorney for over three decades, specializing in complex business litigation. He is a Retired Partner with Gibson Dunn & Crutcher LLP, where he practiced in the Palo Alto and Los Angeles offices. His clients included large global companies, boards, CEOs, and CFOs in matters involving securities class actions, corporate governance disputes, and related investigations work. Mr. Brown also has expertise in accounting and valuation disputes and taught a course on accounting and finance for business litigation at UC Berkeley School of Law for several years. Previously, he was also a law professor at UCLA School of Law. Mr. Brown is currently a board director of Silicon Valley Community Foundation and is chair of its Audit Committee.  He is also a board director of Children’s Hospital Los Angeles.  Mr. Brown also serves on the board of Housing Trust Silicon Valley where he previously served as board chair.  He was previously vice chair of the board for Fresh Lifelines for Youth. He also previously served as a national trustee for Boys & Girls Clubs of America and as board chair for the Boys & Girls Clubs of Metro Los Angeles. Mr. Brown is a senior fellow with American Leadership Forum Silicon Valley and previously served on its board. Prior to that Mr. Brown also served on the board of the Lawyers’ Committee for Civil Rights for the San Francisco Bay Area, and later served as its board co-chair.

Mr. Brown received his B.S. degree in accounting from University of Minnesota, and his M.B.A./J.D. from UCLA Anderson School of Management and UCLA School of Law. He is a member of the California State Bar and is a California Certified Public Accountant (inactive).

The Company believes that Mr. Brown’s record of success as an advisor to large global companies, boards, and executives and as a partner in large professional services organizations qualifies him to serve as a director of the Company.

Carol Lindstrom

Ms. Lindstrom joined the Board in 2017.  Ms. Lindstrom previously served as vice chairman of Deloitte LLP, or Deloitte, a professional services firm, where she led strategic relationship management, and was also president of the Deloitte Foundation. She was a member of the Deloitte & Touche Tohmatsu Global Board of Directors for eight years. Ms. Lindstrom held many management and client leadership positions during her Deloitte career, including managing director of global strategic relationship clients in the United States; managing director of Deloitte’s e-business unit,; managing director of the Americas technology practice; managing director of the San Francisco and Orange County practices; and lead advisory and client service partner for many significant clients. Ms. Lindstrom joined Deloitte in 1995 after having served as a partner at Andersen Consulting for many years. Ms. Lindstrom is a member of the Board of Genpact Limited, Energous Corporation, and Entertainment Partners. 

The Company believes that Ms. Lindstrom’s record of success in senior leadership positions with large professional services organizations qualifies her to serve as a director of the Company. 

John B. Shoven, Ph.D.

Dr. Shoven has been a member of the Board of Exponent since 2007. Dr. Shoven is currently the Charles R. Schwab Professor of Economics at Stanford University, where he has taught since 1973. He was the Director of the Stanford Institute for Economic Policy Research from 1989 to 1993 and from 1999 to 2015. He served as Chairman of the Economics Department at Stanford University from 1986 to 1989 and as Dean of the School of Humanities and Sciences from 1993 to 1998. Dr. Shoven earned his Ph.D. in economics from Yale University and his bachelor’s degree in physics from University of California, San Diego. Dr. Shoven is a Fellow of the American Academy of Arts and Sciences, a recipient of the Paul A. Samuelson Award for Outstanding Scholarly Writing on Lifelong Financial Security, an award-winning teacher at Stanford, and has published more than one hundred professional articles and twenty books. He is also Chairman of the Board of Cadence Design Systems, Inc. and a member of the Board of American Century Funds.  

The Company believes that Dr. Shoven’s extensive academic experience and service as director of other public companies qualify him to serve as a director of the Company. 

Debra Zumwalt

Ms. Zumwalt has been a member of the Board of Directors since 2014. Ms. Zumwalt is currently the Vice President and General Counsel for Stanford University and its affiliated entities, including two hospitals. She has held this position since 2001. She is also a member of the University Cabinet. Ms. Zumwalt was a Partner with Pillsbury Winthrop Shaw Pittman LLP from 1993 to 2001 where she served on the executive board and as Managing Partner of the Silicon Valley office. She is also a Member of the Board of Huron Consulting Group, Inc. 

The Company believes that Ms. Zumwalt’s senior leadership positions and her extensive legal background qualify her to serve as a director of the Company.