On December 13, 2019, Cleveland BioLabs, Inc. appointed Christopher Zosh, the Company's current Vice President of Finance, to serve as the Company's interim principal executive officer, principal financial officer and principal accounting officer while the Company's board of directors continues its search for a permanent Chief Executive Officer. Mr. Zosh succeeds Yakov Kogan, whose resignation as Chief Executive Officer became effect on December 13, 2019. Christopher Zosh, 44, has served as Vice President of Finance of the Company since January 1, 2019.