On April 3, 2015, Michael Wick resigned from his position as a director of MabVax Therapeutics Holdings, Inc. and all committees thereof. Mr. Wick did not resign due to any disagreement with the company or its management regarding any matters relating to the company's operations, policies or practices. On April 3, 2015, the Board appointed Thomas Varvaro as a Class I director and member of each of the company's Audit Committee, Compensation Committee and Nominating Committee, in order to fill the vacancy created by Mr. Wick's resignation.

He also served as a director of ChromaDex Corporation from March 2006 until May 2010. Mr. Varvaro is responsible for overseeing all of ChromaDex Corporation's aspects of accounting, information technology, Intellectual Property management and human resources management.