Cellectis SA operates as a clinical stage biotechnological company. The firm operates through the segments: Therapeutics and Plants. The Therapeutics segment focuses on the development of products in the field of immuno-oncology and monogenic diseases. The Plants segment focuses on using Calyxt's proprietary PlantSpringTM technology platform to engineer plant metabolism to produce innovative, high-value, and sustainable materials and products for use in helping customers meet their sustainability targets and financial goals. The company was founded by David J. Sourdive and André Choulika on February 20, 1999 and is headquartered in Paris, France.