 Cellectis Euronext Growth: ALCLS; Nasdaq: CLLS - André Choulika, Ph.D., Cellectis Chairman and CEO, announces that he will focus all his energy on Cellectis development activities, and thus, announces his retirement from Calyxts Board of Directors, effective immediately. Calyxts Board of Directors has appointed Yves Ribeill, Ph.D., currently a Calyxt Board member, as Chairman, effective immediately. 