Charles S. Fuchs - 10 Aug 2026 Form 4 Insider Report for Erasca, Inc. (ERAS)

Reporting relationship: President, R&D
Issuer ticker: ERAS
Reported as of: 10 Aug 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 12 Aug 2026, 16:22:08 UTC
Prior SEC filing: 30 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Ebun S. Garner, as Attorney-in-Fact

Key filing fact

Charles S. Fuchs filed Form 4 for Erasca, Inc. (ERAS) on 12 Aug 2026.

Key facts

This page summarizes Charles S. Fuchs's Form 4 filing for Erasca, Inc. (ERAS).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 12 Aug 2026, 16:22.

Change

Previous filing in this sequence was filed on 30 Jul 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001719576 Primary reporting owner

Fuchs Charles S.

Relationship: President, R&D
Address: C/O ERASCA, INC., 3115 MERRYFIELD ROW, SUITE 300, SAN DIEGO
Signature: /s/ Ebun S. Garner, as Attorney-in-Fact
Signature date: 12 Aug 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ERAS transaction Derivative

Stock option (right to buy)

Award

Transaction value
Shares: +1,300,000
Change %
Price: $0.000000^*
Shares after: 1,300,000
Date: 10 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,300,000
Exercise price: $18.12
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The reported option award was granted in connection with the Reporting Person's commencement of employment. Of the total option award, 21,480 shares were granted under the Issuer's 2021 Incentive Award Plan, with a portion intended to qualify as an incentive stock option under Section 422 of the Internal Revenue Code to the extent permitted by law. The remaining 1,278,520 shares were granted as a nonqualified stock option under the Issuer's 2026 Employment Inducement Incentive Award Plan.

Footnote F2

The reported option award vests as follows: 25% of the shares subject to the option will vest on the first anniversary of the date of grant, and the remaining 75% of the shares will vest in 36 substantially equal monthly installments thereafter, subject to the Reporting Person's continued service with the Issuer through each applicable vesting date.