EOS Energy insider plans Rule 144 stock sale

EOS Energy Enterprises, Inc. insider Sumeet Puri filed to sell common stock under Rule 144.

Rhea-AI Filing Summary

EOS Energy Enterprises, Inc. insider Sumeet Puri filed to sell common stock under Rule 144. The filing lists 29,167 common shares held at UBS Financial Services, Inc. with an aggregate market value of $100,042.81, associated with RSU vesting dated July 25, 2026, for potential sale on July 28, 2026 on NASDAQ. It also notes a prior sale of 8,823 common shares on June 30, 2026 for $51,693.07 during the past three months.

Key Figures

Shares to be sold: 29,167 shares Aggregate market value of planned sale: $100,042.81 RSU vesting shares: 29,167 shares +3 more

6 metrics

Shares to be sold 29,167 shares Common stock listed as securities to be sold on July 28, 2026

Aggregate market value of planned sale $100,042.81 Value of 29,167 common shares held at UBS Financial Services, Inc.

RSU vesting shares 29,167 shares Common shares associated with RSU Vesting on July 25, 2026

Shares sold in prior 3 months 8,823 shares Common stock sold on June 30, 2026

Value of prior sale $51,693.07 Total value of 8,823 common shares sold on June 30, 2026

Planned sale date July 28, 2026 Date listed for sale of 29,167 common shares on NASDAQ

Key Terms

Rule 144, RSU Vesting, Securities To Be Sold, Securities Sold During The Past 3 Months

4 terms

Rule 144 regulatory

"144: Securities To Be Sold"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

RSU Vesting financial

"Common | 07/25/2026 | RSU Vesting | Issuer"

RSU vesting is the process by which restricted stock units — a promise by a company to give shares to an employee — become actual, owned shares over time or when certain goals are met. Investors care because vested shares can dilute existing ownership when issued, and the timing of vesting affects when employees can sell shares, which can influence share supply, insider selling patterns, and company incentives.

Securities To Be Sold regulatory

"144: Securities To Be Sold"

Securities Sold During The Past 3 Months regulatory

"144: Securities Sold During The Past 3 Months"

FAQ

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

What does the Form 144 filing for EOSE disclose about planned stock sales?

The filing discloses a potential sale of 29,167 common shares of EOS Energy Enterprises, Inc. on July 28, 2026 on NASDAQ, tied to RSU vesting that occurred on July 25, 2026.

How many EOSE shares are related to RSU vesting in this Form 144?

The Form 144 associates 29,167 common shares of EOS Energy Enterprises, Inc. with RSU Vesting dated July 25, 2026. These RSU-related shares are listed as securities to be sold through UBS Financial Services, Inc.

What was the aggregate market value of the EOSE shares listed to be sold?

The Form 144 reports an aggregate market value of $100,042.81 for the 29,167 common shares of EOS Energy Enterprises, Inc. that are listed as securities to be sold through UBS Financial Services, Inc.

What prior EOSE stock sale is reported in the past 3 months section?

The filing reports that on June 30, 2026, 8,823 common shares of EOS Energy Enterprises, Inc. were sold for a total value of $51,693.07, disclosed in the securities sold during the past three months section.

Who is the reporting person in the EOSE Form 144 filing and where are they located?

The reporting person is Sumeet Puri, with an address at Two Allegheny Center, Nova Tower 2, Pittsburgh, PA 15212. This person is associated with the planned sale of EOS Energy Enterprises, Inc. common stock.

Which broker is listed for the EOSE common shares to be sold under Form 144?

The Form 144 lists UBS Financial Services, Inc., located at 11 Madison Avenue, 4th Floor, New York, NY 10010, as the broker for the 29,167 common shares of EOS Energy Enterprises, Inc. to be sold.

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

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Accepted by SEC EDGAR 07/28/2026 - 04:10 PM EDT Learn about SEC filing dates

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	0001991521
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Eos Energy Enterprises, Inc.
SEC File Number	001-39291
Address of Issuer	TWO ALLEGHENY CENTER NOVA TOWER 2 PITTSBURGH PENNSYLVANIA 15212
Phone	(732) 225-8400
Name of Person for Whose Account the Securities are To Be Sold	Puri Sumeet
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	Officer

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	29167	100042.81	339514027	07/28/2026	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	07/25/2026	RSU Vesting	Issuer			29167	07/25/2026	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Sumeet Puri TWO ALLEGHENY CENTER NOVA TOWER 2 PITTSBURGH PA 15212	Common	06/30/2026	8823	51693.07

144: Remarks and Signature

Remarks	The shares reported on this Form 144 will be sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person to cover estimated tax withholding obligations from the vesting of restricted stock units.
Date of Notice	07/28/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	09/12/2025
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	/s/ UBS Financial Services Inc, as attorney-in-fact for Sumeet Puri
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)