---
schema_version: "secwatch.filing_event.v1"
accession: "0001899287-24-000021"
form_type: "8-K"
ticker: "AMPX"
cik: "0001899287"
company_name: "Amprius Technologies, Inc."
filed_at: "2024-04-01T23:59:59+00:00"
generated_at: "2026-06-04T04:59:26.199279+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "medium"
source: SEC EDGAR
---

# Amprius shifts Colorado plant first line to SiCore batteries; targets up to 5 GWh capacity

## Summary
- First production line at Brighton, CO facility will produce SiCore batteries due to strong market reception.
- SiMaxx batteries planned as site expands; facility foot print estimated at 3–5 GWh potential capacity.
- Construction schedule depends on final design and funding timing; toll manufacturing partner used for SiCore until then.

## SEC filing metadata
- accession: 0001899287-24-000021
- form_type: 8-K
- ticker: AMPX
- cik: 0001899287
- company_name: Amprius Technologies, Inc.
- filed_at: 2024-04-01T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: medium
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000021/0001899287-24-000021-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000021/ampx-20240401.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001899287-24-000021
- JSON: https://secwatch.observer/filing/0001899287-24-000021.json
- Plain text: https://secwatch.observer/filing/0001899287-24-000021.txt

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