Cellectis (CLLS) SC 13D Cellectis / ASTRAZENECA ownership change

EXHIBIT 1

CUSIP No. 15117K103

JOINT FILING AGREEMENT

The undersigned acknowledge and agree that the foregoing statement on Schedule 13D is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13D shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing statements. The undersigned acknowledge that each shall be responsible for the timely filing of such amendments, and for the completeness and accuracy of the information concerning him, her or it contained herein, but shall not be responsible for the completeness and accuracy of the information concerning the other entities or persons, except to the extent that he, she or it knows or has reason to believe that such information is inaccurate.

Date: November 9, 2023	ASTRAZENECA PLC
	By:	/s/ Adrian Kemp
	Name:	Adrian Kemp
	Title:	Company Secretary
Date: November 9, 2023	ASTRAZENECA HOLDINGS B.V.
	By:	/s/ Kamila Kozikowska
	Name:	Kamila Kozikowska
	Title:	Director