X0206 3 2021-06-23 0 0001826457 Monte Rosa Therapeutics, Inc. GLUE 0001855641 Castle John C. MONTE ROSA THERAPEUTICS, INC. 645 SUMMER STREET, SUITE 102 BOSTON MA 02210 0 1 0 0 Chief Data Scientist Common Stock 17310 D Stock Option (Right to Buy) 1.13 2030-08-13 Common Stock 51931 D Stock Option (Right to Buy) 6.14 2031-04-12 Common Stock 182353 D 25% of this option became vested and exercisable on May 1, 2021, with the remainder vesting in 36 substantially equal monthly installments thereafter. 25% of this option shall vest and become exercisable on April 9, 2022, with the remainder vesting in 36 substantially equal monthly installments thereafter. Exhibit 24 - Power of Attorney /s/ Ajim Tamboli, Attorney-in-Fact 2021-06-23