X0306 4 2021-07-20 0 0001761918 Erasca, Inc. ERAS 0001652037 Start Valerie Denise Harding C/O ERASCA, INC. 10835 ROAD TO THE CURE, SUITE 140 SAN DIEGO CA 92121 1 0 0 0 Common Stock 2021-07-20 4 P 0 2000 16.00 A 2000 D /s/ Ebun S. Garner, Attorney-in-Fact 2021-07-20