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John Patience has served as a Director of the Company and board chairman since June 26, 2012. Mr. Patience also serves as a director and chairman of the board of Biodesix, Inc. (NASDAQ: BDSX), another medical diagnostics company. Mr. Patience is also a founding partner of Crabtree Partners, a private equity investment firm. Mr. Patience served as a director of Ventana Medical Systems, Inc. from 1989 and as Vice Chairman from 1999 until Ventana’s acquisition by Roche in 2008. Mr. Patience also served as a director of Stericycle, Inc. (NASDAQ: SRCL) from its founding in 1989 until June 2018. Mr. Patience was previously a partner of a venture capital investment firm that provided both Ventana and Stericycle with early-stage funding. Mr. Patience was also previously a partner in the consulting firm of McKinsey & Co., Inc., specializing in health care. Mr. Patience holds a B.A. in Liberal Arts and an L.L.B. from the University of Sydney, Australia, and an M.B.A. from the University of Pennsylvania’s Wharton School of Business.