X0508 4 2025-12-09 0001850119 Century Therapeutics, Inc. IPSC 0002100154 Lee Han Myung 25 N 38TH ST. 11TH FLOOR PHILADELPHIA PA 19104 true false false false 0 Stock Option (right to buy) 0.5920 2025-12-09 4 A 0 88000 0 A 2035-12-09 Common Stock 88000 88000 D Century Therapeutics, Inc. (the "Company") issued to the Reporting Person stock options (the "Options") in connection with his appointment as a director. The Options vest in equal monthly installments over 36 months subject to the Reporting Person's continued service to the Company and are issued pursuant to the Company's 2021 Equity Incentive Plan. /s/ Douglas Carr, Attorney-in-Fact 2025-12-11