---
schema_version: "secwatch.filing_event.v1"
accession: "0001899287-24-000073"
form_type: "8-K"
ticker: "AMPX"
cik: "0001899287"
company_name: "Amprius Technologies, Inc."
filed_at: "2024-09-12T23:59:59+00:00"
generated_at: "2026-05-31T05:18:27.125589+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Director Justin Mirro resigns from Amprius Technologies Board

## Summary
- Justin Mirro resigned from the Board and all committees, effective September 6, 2024.
- Resignation was not due to any disagreement with the Company on operations, policies, or practices.
- No replacement was named at the time of filing.

## SEC filing metadata
- accession: 0001899287-24-000073
- form_type: 8-K
- ticker: AMPX
- cik: 0001899287
- company_name: Amprius Technologies, Inc.
- filed_at: 2024-09-12T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000073/0001899287-24-000073-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000073/ampx-20240906.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001899287-24-000073
- JSON: https://secwatch.observer/filing/0001899287-24-000073.json
- Plain text: https://secwatch.observer/filing/0001899287-24-000073.txt

## Key facts
- Executive change
  Justin Mirro resigned as Director at Amprius Technologies, Inc..
  - Action: resigned
  - Role: Director
  source text: On September 6, 2024, Justin Mirro resigned from his position as a member of the Board of Directors (the “Board”) of Amprius Technologies, Inc. (the “Company”) and from all of its committees, which resignation was effective on that date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000073/0001899287-24-000073-index.htm

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