X0306 5 2022-12-31 0 0 0 0001761918 Erasca, Inc. ERAS 0001283290 Lim Jonathan E C/O ERASCA, INC. 3115 MERRYFIELD ROW, SUITE 300 SAN DIEGO CA 92121 1 1 1 0 Chairman and CEO Common Stock 2022-11-30 5 G 0 2000006 0.00 D 18196216 I Jonathan E. Lim and Conyee T. Lim Family Trust, dated April 28, 2005 Common Stock 11899360 I City Hill, LLC Transfer of shares to a trust of which the children of the Reporting Person and his spouse are beneficiaries. The securities reported herein may be deemed beneficially owned by each of (i) Jonathan E. Lim, M.D. and (ii) Conyee T. Lim, M.D., who are co-trustees of the Jonathan E. Lim and Conyee T. Lim Family Trust, dated April 28, 2005. Consists of shares held directly by City Hill, LLC ("City Hill"). Jonathan E. Lim, M.D. serves as the managing partner of City Hill. Dr. Lim exercises voting and dispositive control over the securities held by City Hill and is therefore deemed to be a beneficial owner of securities owned by City Hill. Dr. Lim disclaims beneficial ownership of the reported securities held by City Hill, except to the extent of his pecuniary interest therein. /s/ Ebun Garner, Attorney-in-Fact 2023-02-15