---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-23-030426"
form_type: "8-K"
ticker: "EOSE"
cik: "0001805077"
company_name: "Eos Energy Enterprises, Inc."
filed_at: "2023-08-23T23:59:59+00:00"
generated_at: "2026-06-11T04:55:20.080239+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Eos Energy increases ATM offering to $200M, enters $17.15M supply agreement, terminates Yorkville SEPA

## Summary
- Amended Sales Agreement with TD Cowen raises maximum ATM offering from $100M to $200M; $83.5M had been sold as of Aug 23.
- Subsidiary Hi-Power entered $17,154,300 Master Supply Agreement with Acro for automated assembly line for battery production.
- Standby Equity Purchase Agreement with Yorkville Advisors terminated by mutual consent; no outstanding borrowings or fees due.
- Supply agreement includes milestone-based payment schedule and potential $1M or $500k incentive for early site acceptance testing.

## SEC filing metadata
- accession: 0001628280-23-030426
- form_type: 8-K
- ticker: EOSE
- cik: 0001805077
- company_name: Eos Energy Enterprises, Inc.
- filed_at: 2023-08-23T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 1.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1805077/000162828023030426/0001628280-23-030426-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1805077/000162828023030426/eose-20230823.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-23-030426
- JSON: https://secwatch.observer/filing/0001628280-23-030426.json
- Plain text: https://secwatch.observer/filing/0001628280-23-030426.txt

## Key facts
- Material Agreements
  Eos Energy Enterprises, Inc. entered into Master Supply Agreement with ACRO Automation Systems, Inc. valued at $17,154,300 (effective 2023-08-23).
  - Action: entry
  - Agreement: supply
  - Counterparty: ACRO Automation Systems, Inc.
  - Value: $17,154,300
  - Effective: 2023-08-23
  source text: Supply Agreement On August 23, 2023, HI-POWER, LLC (“Hi-Power”), a wholly-owned subsidiary of the Company, entered into a Master Supply Agreement (the “Supply Agreement”) with ACRO Automation Systems, Inc.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1805077/000162828023030426/0001628280-23-030426-index.htm
- Material Agreements
  Eos Energy Enterprises, Inc. amended Amended Sales Agreement with Cowen and Company, LLC valued at from $100,000,000 to $200,000,000 (effective 2023-08-23).
  - Action: amendment
  - Agreement: atm program
  - Counterparty: Cowen and Company, LLC
  - Value: from $100,000,000 to $200,000,000
  - Effective: 2023-08-23
  source text: 1, the “Amended Sales Agreement”) with Cowen and Company, LLC (“TD Cowen”), to increase the aggregate offering price of the shares of the Company’s common stock, $0.0001 par value per share (the “Common Stock”), that may be offered and sold from time to time in an at the market offering program,from $100,000,000 to $200,000,000 (the “Placement Shares”) through TD Cowen as its sales agent and/or principal.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1805077/000162828023030426/0001628280-23-030426-index.htm
- Material Agreements
  Eos Energy Enterprises, Inc. terminated Standby Equity Purchase Agreement with YA II PN, Ltd. valued at up to $75.0 million (effective 2023-08-23).
  - Action: termination
  - Agreement: equity purchase
  - Counterparty: YA II PN, Ltd.
  - Value: up to $75.0 million
  - Effective: 2023-08-23
  source text: the Company and YA II PN, Ltd. ("Yorkville"), an affiliate of Yorkville Advisors, terminated the Standby Equity Purchase Agreement dated as of April 28, 2022, as amended (the "SEPA") by the mutual written consent of the parties, effective as of August 23, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1805077/000162828023030426/0001628280-23-030426-index.htm

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