Eos Energy (EOSE) Rule 144 Notice: RSU Vesting and Proposed Sale

Rhea-AI Filing Summary

Form 144 notice for Eos Energy Enterprises, Inc. (EOSE) reports a proposed sale of common stock under Rule 144 to be executed on 09/08/2025 on Nasdaq through UBS Financial Services. Two line items list 20,501 and 20,000 shares with aggregate market values of $143,006.78 and $145,062.00, respectively. The filer reports acquiring 40,501 shares on 09/05/2025 through RSU vesting and indicates prior sales of 17,500 shares on 07/29/2025 for $103,880.00. The form includes the standard representation that the seller is not aware of undisclosed material adverse information.

Positive

• Full Rule 144 disclosure provided with broker, execution date, and share counts
• Source of shares disclosed as RSU vesting on 09/05/2025
• Prior sale within the reporting period disclosed (17,500 shares on 07/29/2025)

Negative

• Insider intends to sell shares, which investors may note even though sizes are small
• Issuer identity fields in the form body are blank despite metadata indicating EOSE (the filing tables omit issuer name)

Insights

Securities Analyst

TL;DR: Insider-equity disposal via Rule 144 after RSU vesting; sizes are small relative to shares outstanding and appear procedural.

The filing documents a planned sale of 40,501 shares to be effected through UBS on Nasdaq on 09/08/2025, arising from RSU vesting dated 09/05/2025. A prior sale of 17,500 shares on 07/29/2025 is disclosed with gross proceeds of $103,880.00. Against the reported 259,853,606 shares outstanding, the amounts are immaterial in percentage terms. The filing is routine compliance with Rule 144 and provides transparent broker and timing details for market participants.

Corporate Governance Expert

TL;DR: Proper insider sale disclosure; contains standard certification about material non-public information.

The notice includes the required representation that the selling person lacks undisclosed material adverse information and notes that the shares stem from RSU vesting. Broker identity and execution date are provided, supporting orderly disclosure. No information in the filing indicates governance issues or undisclosed conflicts; the filing appears consistent with compliance practices for insider dispositions.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	UBS Financial Services Inc. 11 Madison Avenue 4th Floor New York NY 10010	20501	143006.78	259853606	09/08/2025	Nasdaq
Common	UBS Fincial Services Inc. 11 Madison Ave 4th Floor New York NY 10010	20000	145062.00	259853606	09/08/2025	Nasdaq

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	09/05/2025	RSU Vesting	Issuer			40501	09/05/2025	NA

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Sumeet Puri 3920 Park Avenue Edison NJ 08820	Common	07/29/2025	17500	103880.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the EOSE Form 144 filed here report?

The filing reports a proposed sale of 40,501 common shares to be sold on 09/08/2025 on Nasdaq through UBS Financial Services arising from RSU vesting on 09/05/2025.

How many shares were sold previously by the reporting person in the past 3 months?

The filing discloses a prior sale of 17,500 common shares on 07/29/2025 for gross proceeds of $103,880.00.

What is the total number of shares outstanding reported in the form?

The form lists 259,853,606 shares outstanding.

Are the shares to be sold newly acquired or purchased previously?

The shares to be sold were acquired by RSU vesting on 09/05/2025; the form reports 40,501 shares from that vesting event.

Which broker is handling the proposed sale?

The broker named is UBS Financial Services Inc., 11 Madison Avenue, 4th Floor, New York, NY 10010.