Eos Energy Form 144: 0.1% stake set for sale via UBS

Rhea-AI Filing Summary

Eos Energy Enterprises, Inc. (EOSE) filed a Form 144 indicating an intended insider sale of 324,504 common shares through UBS Financial Services on or after 08/06/2025. The shares were acquired via RSU vesting on 06/21/2025. At the current reference price the aggregate market value is $2.11 million. Total shares outstanding are 259,853,606, so the planned sale represents approximately 0.1 % of outstanding stock.

No other sales by this insider were reported in the past three months and no material adverse information was acknowledged. The filing provides disclosure but does not guarantee that the transaction will occur; it merely grants the right to sell under Rule 144.

Positive

• Sale represents only ~0.1 % of outstanding shares, implying limited dilution or price pressure.
• Full transparency via Rule 144 filing allows investors to monitor insider activity.

Negative

• Insider intention to sell can be interpreted as reduced confidence in near-term share appreciation.
• Aggregate market value of $2.1 M could still weigh on sentiment for a thin-traded stock.

Insights

Financial Analyst

TL;DR: Modest insider Rule 144 sale; size immaterial to float, signal mildly negative.

The notice covers 324 k shares (~0.1 % of 260 M shares). Market value is roughly $2.1 M, small relative to EOSE’s daily trading volume, so liquidity impact should be minimal. Because the stock was obtained via recent RSU vesting, the filing likely reflects diversification rather than a valuation statement. Still, insider intent to sell can be perceived as a slight negative sentiment indicator. No other concurrent sales or price-sensitive disclosures accompany the filing, keeping overall impact limited.

Risk Analyst

TL;DR: Low risk to shareholders; transaction equals 0.1 % of shares, limited market overhang.

The prospective sale is well within Rule 144 limits and does not consolidate with prior three-month transactions

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 1000 Harbor Blvd 3rd Floor Weehawken NJ 07086	324504	2109276	259853606	08/06/2025	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	06/21/2025	RSU Vesting	Issuer			324504	06/21/2025	N/A

* 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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

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

How many EOSE shares are insiders planning to sell under this Form 144?

The filing covers 324,504 common shares.

What is the estimated market value of the planned Eos Energy share sale?

The aggregate market value listed is about $2.11 million.

When can the EOSE insider begin selling the shares?

The approximate sale date stated is 08/06/2025.

What percentage of Eos Energy’s outstanding shares does the sale represent?

Roughly 0.1 % of the 259,853,606 shares outstanding.

How were the shares being sold acquired?

They were acquired via RSU vesting on 06/21/2025.