Eos Energy Enterprises (EOSE) director Song Haiyan files Form 3 insider report

Rhea-AI Filing Summary

Eos Energy Enterprises, Inc. director Song Haiyan has filed a Form 3, the initial statement of beneficial ownership of securities as a company insider. The information provided here lists no reported purchases, sales, or other share transactions and shows no derivative positions in this disclosure.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Understanding Insider Trading Forms →

Available on EDGAR 07/15/2026 - 04:55 PM Accepted by SEC EDGAR 07/15/2026 - 04:54 PM Learn about SEC filing dates

FAQ

What does the Form 3 filed for EOSE by Song Haiyan represent?

The Form 3 for Eos Energy Enterprises, Inc. (EOSE) reports that director Song Haiyan has become an insider and must disclose beneficial ownership. This specific Form 3 shows no reported transactions or derivative positions in the provided data.

Does the EOSE Form 3 for Song Haiyan show any share purchases or sales?

No. The Form 3 data for Song Haiyan at Eos Energy Enterprises, Inc. (EOSE) indicates no buy, sell, acquire, or dispose transactions and an empty transaction list in this disclosure.

What insider role does Song Haiyan hold at Eos Energy Enterprises, Inc. (EOSE)?

According to the Form 3, Song Haiyan is a director of Eos Energy Enterprises, Inc. (EOSE). The filing classifies this reporting person as a director and not as an officer or 10% owner in this context.

Are any derivative securities reported for Song Haiyan in the EOSE Form 3?

No. The Form 3 data for Eos Energy Enterprises, Inc. (EOSE) shows an empty derivativeSummary, indicating that no options, warrants, or other derivative securities are reported for Song Haiyan in this disclosure.

Does the EOSE Form 3 for Song Haiyan indicate any gifts or tax withholdings?

No. Summary counts for gift and tax withholding transactions are zero in the Form 3 for Song Haiyan at Eos Energy Enterprises, Inc. (EOSE), and no such entries appear in the transaction list.

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^*

Song Haiyan

(Last) (First) (Middle)

C/O EOS ENERGY ENTERPRISES, INC.

TWO ALLEGHENY CENTER, NOVA TOWER 2

(Street)

PITTSBURGH PENNSYLVANIA 15212

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
07/09/2026

3. Issuer Name and Ticker or Trading Symbol
Eos Energy Enterprises, Inc. [ EOSE ]

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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

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:

Remarks:

Exhibit 24 - Power of Attorney

No securities are beneficially owned.

	/s/ Marie Martin as attorney-in-fact for Haiyan Song	07/15/2026
	** 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)