The board of directors of CanSino Biologics Inc. (the " Company ") announced that Ms. Xi LUO () ("Ms. Luo") has tendered her resignation as the chief financial officer of the Company (the "CFO") with effect from November 15, 2023, due to her personal career development. Ms. Luo has confirmed that she has no disagreement with the Board and there are no matters in relation to her resignation that need to be brought to the attention of the shareholders of the Company or The Stock Exchange of Hong Kong Limited.