---
schema_version: "secwatch.filing_event.v1"
accession: "0001899287-23-000021"
form_type: "8-K"
ticker: "AMPX"
cik: "0001899287"
company_name: "Amprius Technologies, Inc."
filed_at: "2023-03-23T23:59:59+00:00"
generated_at: "2026-06-17T19:31:43.915039+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Amprius FY2022 rev $4.4M, net loss $17.3M; 500 Wh/kg batteries verified, plans Colorado gigafactory

## Summary
- FY2022 revenue $4.4M (product $2.4M, development $1.8M); net loss $17.3M ($0.24 diluted EPS).
- Cash $69.7M, no debt; shipments up 65% YoY; GAAP gross margin negative 123%.
- Achieved 500 Wh/kg battery verification, 0-80% charge in <10 min, passed military nail penetration test.
- Expanding Fremont to 2 MWh capacity by end 2023; selected Brighton, CO for up to 10 GWh facility.
- Formed Amprius Lab (Fremont) and Amprius Fab (Brighton); COO Jon Bornstein named President of Lab.

## SEC filing metadata
- accession: 0001899287-23-000021
- form_type: 8-K
- ticker: AMPX
- cik: 0001899287
- company_name: Amprius Technologies, Inc.
- filed_at: 2023-03-23T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1899287/000189928723000021/0001899287-23-000021-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1899287/000189928723000021/ampx-20230321.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001899287-23-000021
- JSON: https://secwatch.observer/filing/0001899287-23-000021.json
- Plain text: https://secwatch.observer/filing/0001899287-23-000021.txt

## Key facts
- Earnings Releases
  Amprius Technologies, Inc. reported financial results for fourth fiscal quarter and full year ended December 31, 2022.
  - Period: fourth fiscal quarter and full year ended December 31, 2022
  - Result: reported results
  source text: On March 23, 2023, Amprius Technologies, Inc. (the “Company”) announced its business and financial results for its fourth fiscal quarter and full year ended December 31, 2022.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1899287/000189928723000021/0001899287-23-000021-index.htm
- Governance Changes
  Amprius Technologies, Inc.: The board of directors approved and adopted amended and restated bylaws, addressing universal proxy rules, Delaware law changes, and technical updates (effective 2023-03-21).
  - Change: bylaw amendment
  - Effective: 2023-03-21
  source text: On March 21, 2023, the board of directors of the Company approved and adopted amended and restated bylaws (the “Amended and Restated Bylaws”), which became effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1899287/000189928723000021/0001899287-23-000021-index.htm

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