---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-22-028186"
form_type: "8-K"
ticker: "GWH"
cik: "0001819438"
company_name: "ESS Tech, Inc."
filed_at: "2022-11-03T23:59:59+00:00"
generated_at: "2026-06-22T09:47:12.289677+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# ESS Tech reports Q3 revenue $189K, appoints Anthony Rabb as CFO

## Summary
- Q3 2022 revenue of $189K from one Energy Warehouse unit deployed by Sycamore International.
- Automated manufacturing line installation underway; expected fully operational before year-end, enabling >750 MWh annual capacity.
- Announced multi-year agreement with SMUD to supply up to 2 GWh of long-duration storage, shipments starting in 2023.
- CFO Amir Moftakhar resigned Nov 4; Anthony Rabb appointed, previously CFO of Total Safety and Mirion.
- Vince Canino appointed COO on August 26, 2022.

## SEC filing metadata
- accession: 0001628280-22-028186
- form_type: 8-K
- ticker: GWH
- cik: 0001819438
- company_name: ESS Tech, Inc.
- filed_at: 2022-11-03T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/0001628280-22-028186-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/wk-20221103.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-22-028186
- JSON: https://secwatch.observer/filing/0001628280-22-028186.json
- Plain text: https://secwatch.observer/filing/0001628280-22-028186.txt

## Key facts
- Earnings Releases
  ESS Tech, Inc. reported third quarter of 2022 ended September 30, 2022 results: revenue $189 thousand.
  - Period: third quarter of 2022 ended September 30, 2022
  - Revenue: $189 thousand
  - Result: reported results
  source text: quarter, which should increase our annual production capacity to over 750 MWh. The fully-automated manufacturing line is expected to be operational before year end. • Recognized $189 thousand in revenue in the third quarter on one Energy WarehouseTM that was delivered to partner TerraSol Energies in the second quarter. This unit was deployed by Sycamore International,
  evidence_url: https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/0001628280-22-028186-index.htm
- Executive change
  Amir Moftakhar resigned as Chief Financial Officer at ESS Tech, Inc..
  - Action: resigned
  - Role: Chief Financial Officer
  source text: On November 3, 2022, Amir Moftakhar, Chief Financial Officer of the Company tendered his resignation as Chief Financial Officer to be effective as of November 4, 2022.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/0001628280-22-028186-index.htm
- Executive change
  Anthony Rabb was appointed as Chief Financial Officer at ESS Tech, Inc..
  - Action: appointed
  - Role: Chief Financial Officer
  source text: On November 3, 2022, the Company announced the appointment of Anthony Rabb as Chief Financial Officer of the Company, effective November 4, 2022
  evidence_url: https://www.sec.gov/Archives/edgar/data/1819438/000162828022028186/0001628280-22-028186-index.htm

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