Mr. Siurek has served as our Chief Accounting Officer since December 2020 and previously held executive finance and accounting roles at Fortune 500 companies. Prior to Biodesix, Mr. Siurek served as SVP, Chief Accounting Officer and Controller of Vail Resorts Inc. from April 2016 to October 2020. Prior to Vail Resorts, Mr. Siurek served as Chief Financial Officer for Sprint Corporation’s prepaid and wholesale division from December 2013 to April 2016 and as VP, Chief Accounting Officer and Controller from July 2013 to December 2013. He served as VP, Assistant Controller of Sprint Corporation from January 2009 to November 2009. Prior to Sprint Corporation, Mr. Siurek worked for LyondellBasell Industries from January 2004 to January 2009, where he held various positions, including Director of Risk Management and Global Shared Services from September 2008 to January 2009, European Controller from July 2007 to August 2008, and Senior Manager of Technical Accounting from January 2004 to June 2007 and served as its Controller for European Operations. Mr. Siurek is a member of the American Institute of Certified Public Accountants (AICPA) Financial Reporting Executive Committee (FinREC), a senior committee focused on financial reporting matters. Mr. Siurek holds a Bachelor's and Master's Degree in Accounting from Texas A&M University and is a Certified Public Accountant.