Tillman Gerngross Co-Founded Adimab, LLC. in 2007 and serves as its Chief Executive Officer. Tillman Gergross is Founder of Arsanis Inc. and serves as its Chairman of the Board. Tillman Gergross Co-Founded Kreogene. He is a Co-Founder and Chairman of Alector LLC and Arsanis, Inc. He Co-Founded Avitide, Inc and serves as its Chairman of the Board.