 Calyxt, Inc. NASDAQ: CLXT, a plant-based technology company, announced the appointment of current board member Yves Ribeill, Ph.D., as Chairman. This appointment coincides with Dr. André Choulikas decision to wholly focus his energy on Cellectis clinical development activities, and thus, retiring as Chairman of Calyxts Board. Additionally, Calyxts Board of Directors appointed Laurent Arthaud Cellectis Board member as Director. These changes are effective immediately. 