Cornerstone Research Announces Michael Topper as New Board of Directors Chair


Senior vice president succeeds cofounder Cynthia Zollinger for four-year term.

Menlo Park, Calif.—Cornerstone Research, a leading provider of economic and financial consulting and expert testimony, announced today that Senior Vice President Michael D. Topper has been elected to a four-year term as chair of the firm’s board of directors.

A leading antitrust and competition economist, Dr. Topper has more than 25 years of experience in antitrust merger review, complex business litigation, and regulatory proceedings. A longtime member of Cornerstone Research’s board of directors and executive committee, he also served as head or cohead of the firm’s antitrust and competition practice from 2004 to 2015, and as head of the Silicon Valley office from 2012 to 2017.

Mike is an outstanding choice for this critical position in our firm governance.

“Mike’s commitment to our vision and core values is well established, and he is a role model for collaboration and teamwork,” Cornerstone Research CEO Rahul Guha said. “He is an outstanding choice for this critical position in our firm governance.”

Dr. Topper succeeds Cornerstone Research cofounder Cynthia L. Zollinger as the board’s chair. Ms. Zollinger takes the title of managing director and director emerita.

“As a highly respected leader both inside and outside the firm, Mike consistently takes a thoughtful, long-term, and strategic approach to issues relevant to our clients, experts, and staff,” Ms. Zollinger said. “I valued working with him on both our board of directors and executive committee, and his experience will continue to serve us well as he takes on his new leadership role.”

“It is an honor to be elected to this important role,” Dr. Topper said. “I am proud to have served Cornerstone Research in varied capacities over many years, and I am excited to support our continued growth and success as we look to the future.”

Dr. Topper continues to be actively involved in high-profile client matters, both as a consultant and an expert. Some of his recent representative work includes U.S. v. AT&T/Time WarnerFTC v. Qualcomm; Commercial Metal Company’s Acquisition of Certain Assets from Gerdau S.A.; In re: Whirlpool Corp. Front-Loading Washer Products Liability Litigation; and Toyota Motor Corp. Unintended Acceleration Marketing, Sales Practices, and Products Liability Litigation.

Dr. Topper holds a B.S. from the University of Virginia, and M.S., M.A., and Ph.D. degrees from Stanford University.

  • Silicon Valley

Michael D. Topper

Chair of the Board

  • Silicon Valley

Cynthia L. Zollinger

Managing Director and Director Emerita


Jason Milch
Terri Viera
Cornerstone Research