---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-25-015704"
form_type: "8-K"
ticker: "GWH"
cik: "0001819438"
company_name: "ESS Tech, Inc."
filed_at: "2025-03-31T23:59:59+00:00"
generated_at: "2026-05-24T02:10:41.075450+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# ESS Tech enters ATM equity offering program for up to $13.5M

## Summary
- Entered Sales Agreement with Robert W. Baird & Co. for at-the-market offering.
- Maximum aggregate offering price of $13,504,438 of common stock.
- Net proceeds to be used for working capital and general corporate purposes.
- Agent commission of up to 3% of gross sales price.
- Company is not obligated to sell any shares under the agreement.

## SEC filing metadata
- accession: 0001628280-25-015704
- form_type: 8-K
- ticker: GWH
- cik: 0001819438
- company_name: ESS Tech, Inc.
- filed_at: 2025-03-31T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1819438/000162828025015704/0001628280-25-015704-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1819438/000162828025015704/wk-20250331.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-25-015704
- JSON: https://secwatch.observer/filing/0001628280-25-015704.json
- Plain text: https://secwatch.observer/filing/0001628280-25-015704.txt

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