ERAS

SEC source: 0001209191-24-005928 · doc4.xml · derivative · entry 1

Start Valerie Denise Harding · CIK 0001652037 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2034-06-19

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 20, 2025, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-24-005926 · doc4.xml · derivative · entry 1

Garner Ebun · CIK 0001364554 · General Counsel & Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 160,082

Underlying: Common Stock · 160,082 shares

Expires 2034-06-19

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly, with vesting starting on June 20, 2024, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-24-005927 · doc4.xml · derivative · entry 1

LIU JEAN I · CIK 0001241357 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2034-06-19

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 20, 2025, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-24-005924 · doc4.xml · derivative · entry 1

Lim Jonathan E · CIK 0001283290 · Director · Chairman & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 632,759

Underlying: Common Stock · 632,759 shares

Expires 2034-06-19

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly, with vesting starting on June 20, 2024, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-24-005925 · doc4.xml · derivative · entry 1

Morris Shannon · CIK 0001973527 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,142

Underlying: Common Stock · 137,142 shares

Expires 2034-06-19

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly, with vesting starting on June 20, 2024, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-24-005922 · doc4.xml · derivative · entry 1

Hambleton Julie · CIK 0001578771 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2034-06-19

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 20, 2025, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-24-005920 · doc4.xml · derivative · entry 1

Bristol James Arthur · CIK 0001715153 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2034-06-19

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 20, 2025, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-24-005921 · doc4.xml · derivative · entry 1

Casdin Alexander W. · CIK 0001455228 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2034-06-19

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 20, 2025, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-24-005919 · doc4.xml · derivative · entry 1

Multani Pratik S · CIK 0001586894 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2034-06-19

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 20, 2025, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0000950170-25-014197 · ownership.xml · nonDerivative · entry 1

Chacko David M. · CIK 0001871801 · CFO and CBO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 262,187

F1 · kind: Shares purchased under the Company's 2021 Employee Stock Purchase Plan

F2 · price: The purchase price was calculated in accordance with the issuer's 2021 Employee Stock Purchase Plan.

F3 · balance_after: Reflects all transactions reported under this report.

SEC source: 0000950170-25-014194 · ownership.xml · nonDerivative · entry 1

Garner Ebun · CIK 0001364554 · General Counsel & Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,174

F1 · kind: Shares purchased under the Company's 2021 Employee Stock Purchase Plan

F2 · price: The purchase price was calculated in accordance with the issuer's 2021 Employee Stock Purchase Plan.

F3 · balance_after: Reflects all transactions reported under this report.

SEC source: 0001209191-24-005689 · doc4.xml · nonDerivative · entry 1

Casdin Alexander W. · CIK 0001455228 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 573,974

F1 · shares: The open market purchase was completed by the Alexander W. Casdin Inheritance IRA. Mr. Casdin exercises voting and dispositive control over the securities held by such IRA and is therefore deemed to be a beneficial owner of securities owned by such IRA.

F2 · ownership.direct: Includes 80,000 shares held by Alexander W. Casdin Inheritance IRA. Mr. Casdin exercises voting and dispositive control over the securities held by such IRA and is therefore deemed to be a beneficial owner of securities owned by such IRA.

SEC source: 0001209191-24-002967 · doc4.xml · derivative · entry 1

Chacko David M. · CIK 0001871801 · CFO and CBO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 600,000

Underlying: Common Stock · 600,000 shares

Expires 2034-02-04

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly, with vesting starting on February 1, 2024, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-24-002968 · doc4.xml · derivative · entry 1

Lim Jonathan E · CIK 0001283290 · Director · Chairman & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,500,000

Underlying: Common Stock · 1,500,000 shares

Expires 2034-02-04

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly, with vesting starting on February 1, 2024, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-24-002966 · doc4.xml · derivative · entry 1

Garner Ebun · CIK 0001364554 · General Counsel & Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 480,000

Underlying: Common Stock · 480,000 shares

Expires 2034-02-04

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly, with vesting starting on February 1, 2024, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-24-002965 · doc4.xml · derivative · entry 1

Morris Shannon · CIK 0001973527 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 535,800

Underlying: Common Stock · 535,800 shares

Expires 2034-02-04

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly, with vesting starting on February 1, 2024, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-24-000272 · doc4.xml · derivative · entry 1

Bristol James Arthur · CIK 0001715153 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,747

Underlying: Common Stock · 62,747 shares

Expires 2034-01-01

F1 · derivative.exercise_date: The option will vest and become exercisable in monthly, cumulative 1/12th increments beginning one month from the date of grant, subject to such person's continuing in service on the board through the applicable vesting date.

F2 · derivative.underlying_shares: At the election of the filing person, the option grant was issued in lieu of direct cash compensation payable to such person in 2024 in connection with each position on the board and its committees for which such person is anticipated to serve in 2024.

SEC source: 0001209191-24-000271 · doc4.xml · derivative · entry 1

Multani Pratik S · CIK 0001586894 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,867

Underlying: Common Stock · 32,867 shares

Expires 2034-01-01

F1 · derivative.exercise_date: The option will vest and become exercisable in monthly, cumulative 1/12th increments beginning one month from the date of grant, subject to such person's continuing in service on the board through the applicable vesting date.

F2 · derivative.underlying_shares: At the election of the filing person, the option grant was issued in lieu of direct cash compensation payable to such person in 2024 in connection with each position on the board and its committees for which such person is anticipated to serve in 2024.

SEC source: 0001209191-24-000270 · doc4.xml · derivative · entry 1

LIU JEAN I · CIK 0001241357 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,482

Underlying: Common Stock · 35,482 shares

Expires 2034-01-01

F1 · derivative.exercise_date: The option will vest and become exercisable in monthly, cumulative 1/12th increments beginning one month from the date of grant, subject to such person's continuing in service on the board through the applicable vesting date.

F2 · derivative.underlying_shares: At the election of the filing person, the option grant was issued in lieu of direct cash compensation payable to such person in 2024 in connection with each position on the board and its committees for which such person is anticipated to serve in 2024.

SEC source: 0001209191-24-000269 · doc4.xml · derivative · entry 1

Start Valerie Denise Harding · CIK 0001652037 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,590

Underlying: Common Stock · 39,590 shares

Expires 2034-01-01

F1 · derivative.exercise_date: The option will vest and become exercisable in monthly, cumulative 1/12th increments beginning one month from the date of grant, subject to such person's continuing in service on the board through the applicable vesting date.

F2 · derivative.underlying_shares: At the election of the filing person, the option grant was issued in lieu of direct cash compensation payable to such person in 2024 in connection with each position on the board and its committees for which such person is anticipated to serve in 2024.

SEC source: 0001209191-24-000268 · doc4.xml · derivative · entry 1

Casdin Alexander W. · CIK 0001455228 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,084

Underlying: Common Stock · 41,084 shares

Expires 2034-01-01

F1 · derivative.exercise_date: The option will vest and become exercisable in monthly, cumulative 1/12th increments beginning one month from the date of grant, subject to such person's continuing in service on the board through the applicable vesting date.

F2 · derivative.underlying_shares: At the election of the filing person, the option grant was issued in lieu of direct cash compensation payable to such person in 2024 in connection with each position on the board and its committees for which such person is anticipated to serve in 2024.

SEC source: 0001209191-23-058912 · doc4.xml · nonDerivative · entry 1

Chacko David M. · CIK 0001871801 · CFO and CBO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 246,726

F1 · kind: Shares purchased under the issuer's 2021 Employee Stock Purchase Plan.

F2 · price: The purchase price was calculated in accordance with the issuer's 2021 Employee Stock Purchase Plan.

SEC source: 0001209191-23-058910 · doc4.xml · nonDerivative · entry 1

Garner Ebun · CIK 0001364554 · General Counsel & Corp. Sec.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,728

F1 · kind: Shares purchased under the issuer's 2021 Employee Stock Purchase Plan.

F2 · price: The purchase price was calculated in accordance with the issuer's 2021 Employee Stock Purchase Plan.

SEC source: 0001209191-23-057681 · doc4.xml · nonDerivative · entry 2

Lim Jonathan E · CIK 0001283290 · Director · Chairman & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By City Hill, LLC

Disclosed balance after: 12,899,360

F1 · balance_after: Includes purchases made on December 5, 2023, and December 6, 2023 that are reported on this Form 4.

F2 · ownership.nature: 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.

SEC source: 0001209191-23-057833 · doc4.xml · nonDerivative · entry 1

Start Valerie Denise Harding · CIK 0001652037 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Start 2006 Trust

Disclosed balance after: 20,000

F1 · ownership.nature: The securities reported herein as being purchased were purchased by the Start 2006 Trust. Such securities may be deemed to be beneficially owned by the Reporting Person, who with her spouse are the co-trustees of the Start 2006 Trust.

SEC source: 0001209191-23-057681 · doc4.xml · nonDerivative · entry 1

Lim Jonathan E · CIK 0001283290 · Director · Chairman & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By City Hill, LLC

Disclosed balance after: 12,899,360

F1 · balance_after: Includes purchases made on December 5, 2023, and December 6, 2023 that are reported on this Form 4.

F2 · ownership.nature: 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.

SEC source: 0001209191-23-057297 · doc4.xml · nonDerivative · entry 1

Casdin Alexander W. · CIK 0001455228 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 493,974

SEC source: 0001209191-23-052403 · doc4.xml · nonDerivative · entry 1

Lim Jonathan E · CIK 0001283290 · Director · Chairman & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Jonathan E. Lim and Conyee T. lim Family Trust, dated April 28, 2005

Disclosed balance after: 19,456,216

F1 · ownership.nature: 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.

SEC source: 0000929638-23-001787 · form4.xml · derivative · entry 4

Chen Bihua · CIK 0001599214 · Director

Cormorant Asset Management, LP · CIK 0001583977 · Director

Cormorant Global Healthcare Master Fund, LP · CIK 0001618442 · Director

Cormorant Private Healthcare Fund II, LP · CIK 0001747677 · Director

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2033-06-21

F4 · derivative.exercise_date: 100% of the options to purchase shares vest on 6/22/2024, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

F5 · ownership.direct: Stock options granted to Bihua Chen, in her capacity as a director of the Issuer.

SEC source: 0001209191-23-039589 · doc4.xml · derivative · entry 1

Varney Michael David · CIK 0001638647 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2033-06-21

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 22, 2024, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-23-039588 · doc4.xml · derivative · entry 1

Multani Pratik S · CIK 0001586894 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2033-06-21

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 22, 2024, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-23-039587 · doc4.xml · derivative · entry 1

LIU JEAN I · CIK 0001241357 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2033-06-21

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 22, 2024, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-23-039585 · doc4.xml · derivative · entry 1

Start Valerie Denise Harding · CIK 0001652037 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2033-06-21

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 22, 2024, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-23-039584 · doc4.xml · derivative · entry 1

Hambleton Julie · CIK 0001578771 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2033-06-21

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 22, 2024, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-23-039583 · doc4.xml · derivative · entry 1

Casdin Alexander W. · CIK 0001455228 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2033-06-21

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 22, 2024, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-23-039582 · doc4.xml · derivative · entry 1

Bristol James Arthur · CIK 0001715153 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,000

Underlying: Common Stock · 60,000 shares

Expires 2033-06-21

F1 · derivative.exercise_date: 100% of the options to purchase shares vest on June 22, 2024, subject to the Reporting Person's continuous service to the Issuer on such vesting date.

SEC source: 0001209191-23-035590 · doc4.xml · nonDerivative · entry 1

Lim Jonathan E · CIK 0001283290 · Director · Chairman & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Jonathan E. Lim and Conyee T. Lim Family Trust, dated April 28, 2005

Disclosed balance after: 18,396,216

F1 · ownership.nature: 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.

SEC source: 0001209191-23-023955 · doc4.xml · nonDerivative · entry 1

Casdin Alexander W. · CIK 0001455228 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 463,974

SEC source: 0001209191-23-024257 · doc4.xml · derivative · entry 1

Morris Shannon · CIK 0001973527 · Chief Medical Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 375,000

Underlying: Common Stock · 375,000 shares

Expires 2033-04-09

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly following April 10, 2023, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-23-021458 · doc4.xml · nonDerivative · entry 1

Lim Jonathan E · CIK 0001283290 · Director · Chairman & CEO · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Jonathan E. Lim and Conyee T. Lim Family Trust, dated April 28, 2005

Disclosed balance after: 18,296,216

F1 · ownership.nature: 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.

SEC source: 0001209191-23-006481 · doc4.xml · derivative · entry 3

Chacko David M. · CIK 0001871801 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 600,000

Underlying: Common Stock · 600,000 shares

Expires 2033-01-31

F2 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly following February 1, 2023, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-23-006481 · doc4.xml · nonDerivative · entry 2

Chacko David M. · CIK 0001871801 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 239,248

F1 · balance_after: Includes 1,748 shares acquired under the Erasca, Inc. Employee Stock Purchase Plan (the ESPP) on June 15, 2022 and 2 shares acquired under the ESPP on December 15, 2022.

SEC source: 0001209191-23-006481 · doc4.xml · nonDerivative · entry 1

Chacko David M. · CIK 0001871801 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 239,248

F1 · balance_after: Includes 1,748 shares acquired under the Erasca, Inc. Employee Stock Purchase Plan (the ESPP) on June 15, 2022 and 2 shares acquired under the ESPP on December 15, 2022.

SEC source: 0001209191-23-006482 · doc4.xml · derivative · entry 1

Lim Jonathan E · CIK 0001283290 · Director · Chairman & CEO · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,500,000

Underlying: Common Stock · 1,500,000 shares

Expires 2033-01-31

F1 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly following February 1, 2023, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-23-006480 · doc4.xml · derivative · entry 3

Wei Lin · CIK 0001872772 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 560,000

Underlying: Common Stock · 560,000 shares

Expires 2033-01-31

F2 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly following February 1, 2023, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-23-006480 · doc4.xml · nonDerivative · entry 2

Wei Lin · CIK 0001872772 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 315,812

F1 · balance_after: Includes 1,748 shares acquired under the Erasca, Inc. Employee Stock Purchase Plan (the ESPP) on June 15, 2022 and 2 shares acquired under the ESPP on December 15, 2022.

SEC source: 0001209191-23-006480 · doc4.xml · nonDerivative · entry 1

Wei Lin · CIK 0001872772 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 315,812

F1 · balance_after: Includes 1,748 shares acquired under the Erasca, Inc. Employee Stock Purchase Plan (the ESPP) on June 15, 2022 and 2 shares acquired under the ESPP on December 15, 2022.

SEC source: 0001209191-23-006479 · doc4.xml · derivative · entry 3

Garner Ebun · CIK 0001364554 · General Counsel & Corp. Sec.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 480,000

Underlying: Common Stock · 480,000 shares

Expires 2033-01-31

F2 · derivative.exercise_date: 1/48th of the shares subject to the option vest monthly following February 1, 2023, subject to the Reporting Person's continuous service to the Issuer on each such vesting date.

SEC source: 0001209191-23-006479 · doc4.xml · nonDerivative · entry 2

Garner Ebun · CIK 0001364554 · General Counsel & Corp. Sec.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,280

F1 · balance_after: Includes 2,388 shares acquired under the Erasca, Inc. Employee Stock Purchase Plan (the ESPP) on June 15, 2022 and 2 shares acquired under the ESPP on December 15, 2022.

SEC source: 0001209191-23-006479 · doc4.xml · nonDerivative · entry 1

Garner Ebun · CIK 0001364554 · General Counsel & Corp. Sec.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,280

F1 · balance_after: Includes 2,388 shares acquired under the Erasca, Inc. Employee Stock Purchase Plan (the ESPP) on June 15, 2022 and 2 shares acquired under the ESPP on December 15, 2022.