Daniel W. Muehl has served as our Executive Vice President and Chief Financial Officer since May 2019, and prior to that, as our Principal Accounting Officer and Principal Financial Officer since March 2016, as our Senior Vice President of Finance since September 2016 and as our Vice President of Finance since 2015. Previously, Mr. Muehl was the Chief Financial Officer of biotechnology company Somalogic, Inc. from 2014 to 2015 and prior to that the Chief Financial Officer of bio-industrial company OPX Biotechnologies, Inc. from 2010 to 2014. He earned a Bachelor of Science degree in accounting from the University of Massachusetts—Amherst and received his Certified Public Accountant certificate in 1990.