---
schema_version: "secwatch.filing_event.v1"
accession: "0001899287-26-000005"
form_type: "8-K"
ticker: "AMPX"
cik: "0001899287"
company_name: "Amprius Technologies, Inc."
filed_at: "2026-02-03T23:59:59+00:00"
generated_at: "2026-05-16T05:24:42.589254+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Amprius Technologies terminates Colorado lease with $20M termination fee

## Summary
- Lease termination for 774,155 sq ft facility in Brighton, CO effective Jan 31, 2026.
- Termination fee of $20,000,000 paid to landlord Starboard Platform Brighton JV.
- Security deposit of $1,200,000 letter of credit to be returned by Feb 5, 2026.
- Annual base rent was ~$300,000 plus ~$190,000 additional rent; lease was 15-year term from June 2024.

## SEC filing metadata
- accession: 0001899287-26-000005
- form_type: 8-K
- ticker: AMPX
- cik: 0001899287
- company_name: Amprius Technologies, Inc.
- filed_at: 2026-02-03T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 1.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1899287/000189928726000005/0001899287-26-000005-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1899287/000189928726000005/ampx-20260130.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001899287-26-000005
- JSON: https://secwatch.observer/filing/0001899287-26-000005.json
- Plain text: https://secwatch.observer/filing/0001899287-26-000005.txt

## Key facts
- Material Agreements
  Amprius Technologies, Inc. terminated Lease Termination with Starboard Platform Brighton JV, LLC valued at $20,000,000 (effective 2026-01-30).
  - Action: termination
  - Agreement: lease
  - Counterparty: Starboard Platform Brighton JV, LLC
  - Value: $20,000,000
  - Effective: 2026-01-30
  source text: On January 30, 2026, Amprius Technologies, Inc. (the "Company") entered into a lease termination agreement (the “Lease Termination”) with Starboard Platform Brighton JV, LLC (the “Landlord”) to terminate the Company’s existing lease (the "Lease")
  evidence_url: https://www.sec.gov/Archives/edgar/data/1899287/000189928726000005/0001899287-26-000005-index.htm

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