Todd Harris, Ph.D. has served as our President and Chief Executive Officer since November 2018 and as a member of our Board since August 2018. Prior to co-founding Tyra, Dr. Harris served in various roles, most recently as Head of Corporate Development at Sienna Biopharmaceuticals, Inc., a clinical-stage biopharmaceutical company, from January 2016 to July 2018 and as a director thereof from April 2013 to December 2019, and previously as the founder and Chief Executive Officer of Sienna (then called Sienna Labs) from April 2013 to January 2016. In September 2019, Sienna Biopharmaceuticals filed for voluntary petition to allow restructuring under Chapter 11 of the United States Bankruptcy Code and ceased its operations in December 2019. Before Sienna, Dr. Harris was a consultant at McKinsey & Company in the Health Care Practice Division from September 2008 to December 2012. Dr. Harris holds a Bachelor of Science Degree in Electrical Engineering from Brigham Young University, a Master of Science Degree in Bioengineering from the University of California, San Diego, and a Ph.D. in Medical Engineering and Medical Physics from Massachusetts Institute of Technology. We believe that Dr. Harris valuable expertise and the perspective he brings in his capacity as our President and Chief Executive Officer, his extensive experience and knowledge in the life sciences industry and his education provide him with the qualifications and skills to serve on our Board.