On January 5, 2018, the Board of Directors of Gevo, Inc. promoted Bradford K. Towne to Chief Accounting Officer, and also designated Mr. Towne as the company's principal financial and accounting officer for SEC reporting purposes. Mr. Towne, age 40, has served as the Company's Controller since October 2016. From December 2014 to October 2016, Mr. Towne provided controller and technical accounting services for various public and private companies, including serving as the Director of Technical Accounting at Envision Healthcare, a provider of physician-led services and post-acute care, and ambulatory surgery services (March 2016 to October 2016), and Vice President, Corporate Controller, of Advanced Emissions Solutions, Inc., a company providing emissions solutions to customers in the power generation and other industries (December 2014 to August 2015).