---
title: "ESS Tech, Inc. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/aac35fd8-8f7b-5dbc-97aa-c9f436b7e4e6
json: https://whiteintel.dev/api/public/dossier/aac35fd8-8f7b-5dbc-97aa-c9f436b7e4e6
identifier: sec:0001819438
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ESS Tech, Inc.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001819438`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/aac35fd8-8f7b-5dbc-97aa-c9f436b7e4e6  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/aac35fd8-8f7b-5dbc-97aa-c9f436b7e4e6  

## Ownership & control

### Owners / controllers

- **HONEYWELL INTERNATIONAL INC** (tenpercentowner) — https://whiteintel.dev/entity/98a13853-9066-57dc-a196-38a533f0598f
- **BREAKTHROUGH ENERGY VENTURES, LLC** (tenpercentowner) — https://whiteintel.dev/entity/48ed67db-1a6e-5573-b806-e3043a6cb09c
- **SOFTBANK GROUP CORP.** (tenpercentowner) — https://whiteintel.dev/entity/5abfe1e6-b466-5948-a20c-a28f8f0d3ace
- **BREAKTHROUGH ENERGY INVESTMENTS LLC** (tenpercentowner) — https://whiteintel.dev/entity/39fbd601-169d-5bf8-9b31-e55dab5518ec
- **ACON S2 MANAGEMENT, LLC** (tenpercentowner) — https://whiteintel.dev/entity/bf475d8d-95d0-5a17-9c1b-f6c297506494

### UBO chain (walk to the ultimate owner)

A **171-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ESS Tech, Inc.**. Human view: https://whiteintel.dev/entity/aac35fd8-8f7b-5dbc-97aa-c9f436b7e4e6 · Structured JSON: https://whiteintel.dev/api/public/dossier/aac35fd8-8f7b-5dbc-97aa-c9f436b7e4e6._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._