X0508 4 2026-01-23 0001662774 Quince Therapeutics, Inc. QNCX 0001624830 Ryan Charles S. C/O QUINCE THERAPEUTICS, INC. 611 GATEWAY BLVD., SUITE 273 SOUTH SAN FRANCISCO CA 94080 false true false false President false Employee Stock Option (Right to Buy) 3.08 2026-01-23 4 A false 200000 0 A 2036-01-23 Common Shares 200000 200000 D The shares subject to this option shall vest in equal monthly installments, at a rate of 1/48th of the total number of shares on each monthly anniversary of the vesting with 1/48th vesting on the date of grant and the remaining options vesting on the 1st day of each subsequent month, such that the total number of shares shall be fully vested on December 1, 2029. /s/ Brendan Hannah as attorney-in-fact for Charles Ryan 2026-01-23