---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-049296"
form_type: "8-K"
ticker: "EOSE"
cik: "0001805077"
company_name: "Eos Energy Enterprises, Inc."
filed_at: "2026-07-23T12:42:31+00:00"
generated_at: "2026-07-23T12:45:06.579795+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Eos Energy rights offering raises $37.7M; total $263M raised for Frontier Power USA

## Summary
- Subscriptions for 6,885,218 of 27,367,171 units at $5.481/unit; each unit = 1 share + 0.4388 warrant.
- Gross proceeds of $37.7M from rights offering; combined with Hudson Bay and Cerberus investments totals ~$263M.
- Total raised exceeds Frontier Power USA target; expected to support over $1B in deployable project capital.
- Warrants to be listed on Nasdaq under symbol EOSEW; distribution of shares and warrants expected August 3, 2026.
- Rights not exercised by July 21, 2026 expired and are no longer exercisable.

## SEC filing metadata
- accession: 0001628280-26-049296
- form_type: 8-K
- ticker: EOSE
- cik: 0001805077
- company_name: Eos Energy Enterprises, Inc.
- filed_at: 2026-07-23T12:42:31+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1805077/000162828026049296/0001628280-26-049296-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1805077/000162828026049296/eose-20260721.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-049296
- JSON: https://secwatch.observer/filing/0001628280-26-049296.json
- Plain text: https://secwatch.observer/filing/0001628280-26-049296.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.