Dr. Mattingly has served as a member of the board of directors since December 2014. Previously, Dr. Mattingly served as the Chief Executive Officer of Trimeris, Inc., a biopharmaceutical company, from November 2007 until January 2012 following its merger with Synageva BioPharma Corp in November 2011. He also served on the board of directors of Trimeris, Inc. from November 2007 until November 2011. He served a director of OncoGenex Pharmaceuticals, Inc., a biopharmaceutical company, from June 2010 until August 2017 and has served as a director of Achieve Life Sciences since August 2017. From 2005 to 2007, Dr. Mattingly served as President and Chief Executive Officer of Ambrx, Inc., a biopharmaceutical company. From 2003 to 2005, Dr. Mattingly served as Executive Vice President of CancerVax, Inc., a pharmaceutical company, and as Chief Operating Officer from June 2005 to September 2005. From 1996 to 2003, Dr. Mattingly provided senior leadership in various management positions at Agouron Pharmaceuticals, Inc. and Pfizer. From 1983 to 1996, Dr. Mattingly held various positions in oncology marketing and sales management at Eli Lilly and Company. Dr. Mattingly received a Doctor of Pharmacy degree from the University of Kentucky.