Bihua Chen - Jul 15, 2021 Form 3/A - Amendment Insider Report for Erasca, Inc. (ERAS)

Role: Director, 10%+ Owner
Signature: /s/ CORMORANT GLOBAL HEALTHCARE MASTER FUND, LP, By: Cormorant Global Healthcare GP, LLC, its General Partner, By: Bihua Chen, Managing Member
Stock symbol: ERAS
Transactions as of: Jul 15, 2021
Transactions value $: $0
Form type: 3/A - Amendment
Date filed: 7/16/2021, 05:59 PM
Date Of Original Report: Jul 15, 2021
Next filing: Jul 22, 2021

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	ERAS	Stock Options (right to buy)							Jul 15, 2021	Common Stock	167K	$5.81	Direct	F1, F2, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	These stock options were unintentionally omitted from the Reporting Person's original Form 3.
F2	Stock option grant for 166,666 shares, 41,667 shares of which become exercisable on 3/16/2022 and 124,999 shares of which become exercisable thereafter in equal monthly installments through 3/16/2025.
F3	Stock options granted to Bihua Chen, in her capacity as a director of the Issuer.