On December 20, 2018, Timothy Powers, the Chief Scientific Officer and a member of the Board of Directors of Mount Tam Biotechnologies, Inc. informed the company of his intention to immediately resign from his positions as CSO and as a member of the Board of Directors. Mr. Powers' resignation as CSO was made effective September 5, 2018. Effective upon Mr. Powers' resignation as a director, the size of the company's Board of Directors was reduced from five to four directors.