---
schema_version: "secwatch.filing_event.v1"
accession: "0001899287-24-000009"
form_type: "8-K"
ticker: "AMPX"
cik: "0001899287"
company_name: "Amprius Technologies, Inc."
filed_at: "2024-03-21T23:59:59+00:00"
generated_at: "2026-06-04T10:29:43.871908+00:00"
event_type: "earnings"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Amprius Q4 revenue $3.9M, up from $0.8M YoY; full-year net loss $36.8M

## Summary
- Q4 revenue $3.9M (+$3.1M YoY, +$1.1M seq.); full-year 2023 revenue $9.1M, over 100% growth from 2022.
- GAAP net loss for 2023 was $36.8M ($0.43/share) vs $12.1M ($0.24/share) in 2022; gross margin negative 162%.
- Exited Q4 with $45.8M cash and no debt; raised ~$6.5M via ATM facility through March 18, 2024.
- Fremont capacity expanding from ~250 kWh to 2 MWh by end of 2024; Brighton GWh facility on track for 2025.
- 500 Wh/kg battery platform to ship in 2024; 400 Wh/kg/10C cells commercializing; SiCore product family launched.

## SEC filing metadata
- accession: 0001899287-24-000009
- form_type: 8-K
- ticker: AMPX
- cik: 0001899287
- company_name: Amprius Technologies, Inc.
- filed_at: 2024-03-21T23:59:59+00:00
- event_type: earnings
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000009/0001899287-24-000009-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000009/ampx-20240321.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001899287-24-000009
- JSON: https://secwatch.observer/filing/0001899287-24-000009.json
- Plain text: https://secwatch.observer/filing/0001899287-24-000009.txt

## Key facts
- Earnings Releases
  Amprius Technologies, Inc. reported financial results for fiscal fourth quarter and full year ended December 31, 2023.
  - Period: fiscal fourth quarter and full year ended December 31, 2023
  - Result: reported results
  source text: On March 21, 2024, Amprius Technologies, Inc. (the “Company”) announced its business and financial results for its fiscal fourth quarter and full year ended December 31, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000009/0001899287-24-000009-index.htm

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