---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-21-020123"
form_type: "8-K"
ticker: "EOSE"
cik: "0001805077"
company_name: "Eos Energy Enterprises, Inc."
filed_at: "2021-10-15T23:59:59+00:00"
generated_at: "2026-06-28T20:37:01.183944+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Eos Energy COO Jody Markopoulos resigns effective Nov 12, 2021; will help find successor

## Summary
- Jody Markopoulos notified Eos Energy of her resignation as COO on Oct 12, 2021, effective Nov 12, 2021.
- Markopoulos will continue performing her duties and assist in a search for a successor during transition.
- Resignation is not the result of any disagreement with the company's operations, policies, or board.

## SEC filing metadata
- accession: 0001628280-21-020123
- form_type: 8-K
- ticker: EOSE
- cik: 0001805077
- company_name: Eos Energy Enterprises, Inc.
- filed_at: 2021-10-15T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1805077/000162828021020123/0001628280-21-020123-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1805077/000162828021020123/eose-20211012.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-21-020123
- JSON: https://secwatch.observer/filing/0001628280-21-020123.json
- Plain text: https://secwatch.observer/filing/0001628280-21-020123.txt

## Key facts
- Executive change
  Jody Markopoulos resigned as Chief Operating Officer at Eos Energy Enterprises, Inc..
  - Action: resigned
  - Role: Chief Operating Officer
  source text: On October 12, 2021, Jody Markopoulos informed Eos Energy Enterprises, Inc. (the “Company”) of her intention to resign as Chief Operating Officer, effective November 12, 2021.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1805077/000162828021020123/0001628280-21-020123-index.htm

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