Sec Form 4 Filing - Lim Jonathan E @ Erasca, Inc. - 2021-07-20

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Lim Jonathan E 2. Issuer Name and Ticker or Trading Symbol Erasca, Inc. [ ERAS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director X __ 10% Owner X __ Officer (give title below) _____ Other (specify below) See Remarks (Last) (First) (Middle) C/O ERASCA, INC., 10835 ROAD TO THE CURE, SUITE 140 3. Date of Earliest Transaction (MM/DD/YY) 07/20/2021 (Street) SAN DIEGO, CA92121 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 07/20/2021 C 5,135,390 A 20,156,222 I By Jonathan E. Lim and Conyee T. Lim Family Trust, dated April 28, 2005 ( 2 ) Common Stock 07/20/2021 C 5,441,027 A 11,899,360 I By City Hill, LLC ( 3 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Series A Preferred Stock $ 0 07/20/2021 C 6,162,468 ( 1 ) ( 1 ) Common Stock 5,135,390 ( 1 ) 0 I By the Jonathan E. Lim and Conyee T. Lim Family Trust, dated April 28, 2005 ( 2 ) Series A Preferred Stock $ 0 07/20/2021 C 6,081,233 ( 1 ) ( 1 ) Common Stock 5,067,694 ( 1 ) 0 I By City Hill, LLC ( 3 ) Series B-1 Preferred Stock $ 0 07/20/2021 C 336,000 ( 1 ) ( 1 ) Common Stock 280,000 ( 1 ) 0 I By City Hill, LLC ( 3 ) Series B-2 Preferred Stock $ 0 07/20/2021 C 112,000 ( 1 ) ( 1 ) Common Stock 93,333 ( 1 ) 0 I By City Hill, LLC ( 3 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Lim Jonathan E C/O ERASCA, INC. 10835 ROAD TO THE CURE, SUITE 140 SAN DIEGO, CA92121 X X See Remarks Lim Conyee T. C/O ERASCA, INC. 10835 ROAD TO THE CURE, SUITE 140 SAN DIEGO, CA92121 X City Hill, LLC 4653 CARMEL MOUNTAIN ROAD, SUITE 308-501 SAN DIEGO, CA92121 X Signatures /s/ Ebun S. Garner, Attorney-in-Fact 07/20/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. ( 2 )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. ( 3 )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.

Remarks: Chairman and Chief Executive Officer

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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