SCHEDULE 13G/A 0001140361-23-057682 0001559515 XXXXXXXX LIVE 2 Common Stock, par value $0.001 per share 07/07/2025 0001662774 Quince Therapeutics, Inc. 22053A107 611 Gateway Boulevard, Suite 273 South San Francisco CA 94080 Rule 13d-1(c) Genextra S.p.A. L6 0 0 0 0 0 N 0 OO Francesco Micheli L6 0 0 0 0 0 N 0 IN Matteo Bruno Renzulli L6 0 0 0 0 0 N 0 IN Quince Therapeutics, Inc. 611 Gateway Boulevard, Suite 273, South San Francisco, California, 94080 This Schedule 13G is filed jointly by each of the following persons (collectively, the "Reporting Persons") pursuant to a joint filing agreement: (1) Genextra S.p.A. (2) Francesco Micheli (3) Matteo Bruno Renzulli Via Giovanni De Grassi, 11 20123 Milano Italy Genextra S.p.A. is formed under Italian law. Francesco Micheli is an Italian citizen. Matteo Bruno Renzulli is an Italian citizen. 0 0 0 0 0 0 N Y Y Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. Exhibit 99.1 Joint Filing Agreement Genextra S.p.A. /s/ FRANCESCO MICHELI 10/29/2025 Francesco Micheli /s/ FRANCESCO MICHELI 10/29/2025 Matteo Bruno Renzulli /s/ MATTEO BRUNO RENZULLI 10/29/2025