Erasca officer files initial insider ownership report

Erasca, Inc. officer Charles S. Fuchs, serving as President, R&D, submitted an initial statement of beneficial ownership of securities as a reporting person.

Rhea-AI Filing Summary

Erasca, Inc. officer Charles S. Fuchs, serving as President, R&D, submitted an initial statement of beneficial ownership of securities as a reporting person. The filing lists no reportable transactions or derivative positions and shows no buy, sell, acquisition, or disposition activity.

Key Figures

Buy transactions: 0 Sell transactions: 0 Derivative transactions: 0

3 metrics

Buy transactions 0 Number of buy transactions reported for Charles S. Fuchs

Sell transactions 0 Number of sell transactions reported for Charles S. Fuchs

Derivative transactions 0 derivativeTransactionCount in the transaction summary

Key Terms

Form 3, beneficial ownership, reporting person

3 terms

Form 3 regulatory

"files an initial Form 3 insider ownership report"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

beneficial ownership regulatory

"submitted an initial statement of beneficial ownership of securities"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

reporting person regulatory

"has become a reporting person but shows no reportable transactions"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the ERAS Form 3 filed by Charles S. Fuchs report?

The Form 3 for Erasca, Inc. (ERAS) reports that officer Charles S. Fuchs has become a reporting person but shows no reportable transactions, holdings entries, or derivative positions at the time of filing.

What is Charles S. Fuchs’s role at Erasca, Inc. (ERAS)?

The filing identifies Charles S. Fuchs as an officer of Erasca, Inc., holding the title President, R&D. This role makes him a reporting person required to disclose equity ownership under SEC insider reporting rules.

Does the ERAS Form 3 show any shares bought or sold by Charles S. Fuchs?

No. The summarized data show 0 buy transactions and 0 sell transactions, with no acquire or dispose activity. The Form 3 serves as an initial ownership statement without reporting trading activity.

Are there any derivative securities reported in the ERAS Form 3 for Charles S. Fuchs?

No derivative securities are reported. The derivativeTransactionCount is 0 and the derivativeSummary is empty, indicating no options or other derivative positions disclosed in this initial statement.

Does the ERAS Form 3 indicate any gifts or restructurings of securities?

No. The transaction summary shows 0 giftCount and 0 restructuringCount, meaning there are no reported gifts of securities or restructuring-related transfers associated with Charles S. Fuchs in this filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/12/2026 - 04:21 PM Accepted by SEC EDGAR 08/12/2026 - 04:20 PM Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Fuchs Charles S.

(Last) (First) (Middle)

C/O ERASCA, INC.

3115 MERRYFIELD ROW, SUITE 300

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
08/10/2026

3. Issuer Name and Ticker or Trading Symbol
Erasca, Inc. [ ERAS ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President, R&D

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	/s/ Ebun S. Garner, as Attorney-in-Fact	08/12/2026
	** Signature of Reporting Person	Date
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 5 (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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)