# EDGAR Filing Document

**Accession Number:** 0001805077
**File Stem:** 0001628280-25-045345
**Filing Date:** 2025-10
**Character Count:** 6301
**Document Hash:** 294b9c832d6264f8dfa4cabb5e1ce025
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-25-045345.hdr.sgml**: 20251017

**ACCESSION NUMBER**: 0001628280-25-045345

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20251016

**ITEM INFORMATION**: Submission of Matters to a Vote of Security Holders

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20251017

**DATE AS OF CHANGE**: 20251017

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Eos Energy Enterprises, Inc.
- **CENTRAL INDEX KEY:** 0001805077
- **STANDARD INDUSTRIAL CLASSIFICATION:** MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39291
- **FILM NUMBER:** 251400956

**BUSINESS ADDRESS:**
- **STREET 1:** 3920 PARK AVENUE
- **CITY:** EDISON
- **STATE:** NJ
- **ZIP:** 08820
- **BUSINESS PHONE:** (732) 225-8400

**MAIL ADDRESS:**
- **STREET 1:** 3920 PARK AVENUE
- **CITY:** EDISON
- **STATE:** NJ
- **ZIP:** 08820

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** B. Riley Principal Merger Corp. II
- **DATE OF NAME CHANGE:** 20200227

?xml version='1.0' encoding='ASCII'? eose-20251016

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 8-K**

**CURRENT REPORT**

**PURSUANT TO SECTION 13 OR 15(d) OF THE**

**SECURITIES EXCHANGE ACT OF 1934**

Date of Report (Date of earliest event reported): October 16, 2025

**EOS ENERGY ENTERPRISES, INC.**

(Exact name of registrant as specified in its charter)

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| | | |
|:---|:---|:---|
| **Delaware** | **001-39291** | **84-4290188** |
| (State or other jurisdiction<br>of incorporation) | (Commission<br>File Number) | (IRS Employer<br>Identification No.) |

---

**3920 Park Avenue**

**Edison, New Jersey 08820**

(Address of principal executive offices, including zip code)

Registrant's telephone number, including area code: **(732) 225-8400**

**N/A**

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

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| | | |
|:---|:---|:---|
| **Title of each class** | **Trading Symbol(s)** | **Name of each exchange on which registered** |
| Common stock, par value $0.0001 per share | EOSE | The Nasdaq Stock Market LLC |
| Warrants, each exercisable for one share of common stock | EOSEW | The Nasdaq Stock Market LLC |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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**Item 5.07 Submission of Matters to a Vote of Security Holders**

On October 16, 2025, Eos Energy Enterprises, Inc. (the "Company") held its Special Meeting of Stockholders ("Special Meeting"). On August 20, 2025, the record date for the Special Meeting, 279,216,376 of the Company's common stock were issued and outstanding, of which 148,182,204 were present for the purposes of establishing a quorum. The following are the voting results for the proposals considered and voted upon at the Special Meeting, each of which was described in the Company's Definitive Proxy Statement filed with the Securities and Exchange Commission on September 2, 2025:

**Proposal 1:** To approve, for purposes of complying with the Nasdaq Listing Rules, including, but not limited to, Rule 5635, the Company's issuance of shares of the Company's common stock to the Affiliated Purchaser (as defined in the Proxy Statement) upon redemption or conversion of the Notes (as defined in the Proxy Statement) pursuant to the Indenture (as defined in the Proxy Statement) as supplemented by the First Supplemental Indenture (as defined in the Proxy Statement).

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| | | |
|:---|:---|:---|
| <u>For</u> | &nbsp;&nbsp;&nbsp;<u>Against</u> | &nbsp;&nbsp;&nbsp;<u>Abstained</u> |
| 146,304,352 | 1,426,110 | 451,742 |

---

**Proposal 2:** To approve an adjournment of the Special Meeting to a later date or dates, if necessary or appropriate, to permit further solicitation of proxies in the event that there are insufficient votes for the approval of Proposal 1 or the absence of a quorum.

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| | | |
|:---|:---|:---|
| <u>For</u> | &nbsp;&nbsp;&nbsp;<u>Against</u> | &nbsp;&nbsp;&nbsp;<u>Abstained</u> |
| 143,665,565 | 4,086,765 | 429,874 |

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Based on the foregoing votes, both Proposal 1 and Proposal 2 were approved. No other matters were submitted to or voted on by the Company's stockholders at the Special Meeting.

**Item 9.01 Financial Statement and Exhibits.**

(d) Exhibits

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| | |
|:---|:---|
| **Exhibit <br>Number** | **Description of Document** |
| 104 | Cover page of this Current Report on Form 8-K formatted in Inline XBRL |

---

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**SIGNATURE**

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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| | | | |
|:---|:---|:---|:---|
| | **EOS ENERGY ENTERPRISES, INC.** | **EOS ENERGY ENTERPRISES, INC.** | **EOS ENERGY ENTERPRISES, INC.** |
| Dated: October 17, 2025 | By: | /s/ Nathan Kroeker | /s/ Nathan Kroeker |
|  |  | Name: | Nathan Kroeker |
|  |  | Title: | Interim Chief Financial Officer |

---