Effective February 19, 2021, Yves Ribeill, Ph.D., the Chair of the Board of Directors of Calyxt, Inc. (the 'Company'), was appointed as the Executive Chair of the Board of Directors and in that capacity, will serve as the Company’s principal executive officer until the appointment of a successor to James Blome, the Company’s Chief Executive Officer. Additionally, effective February 19, 2021, Mr. Blome ceased serving as the Company’s Chief Executive Officer. Mr. Blome will be entitled to the compensation benefits on the terms described in his offer letter agreement with the Company dated September 17, 2018 applicable to such a termination without cause.