---
schema_version: "secwatch.filing_event.v1"
accession: "0001899287-24-000069"
form_type: "8-K"
ticker: "AMPX"
cik: "0001899287"
company_name: "Amprius Technologies, Inc."
filed_at: "2024-08-14T23:59:59+00:00"
generated_at: "2026-05-31T09:26:58.455747+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Amprius board member Gustanski resigns; Satterthwaite elected as Class II director

## Summary
- Mary Gustanski resigned from Amprius board effective Aug 12, 2024; no disagreement with company.
- Livingston 'Tony' Satterthwaite elected as Class II director; term expires at 2027 annual meeting.
- Satterthwaite appointed to Compensation Committee; has served on Advisory Council since Sept 2023.
- Board determined Satterthwaite is independent under NYSE listing standards.
- Satterthwaite will be compensated per outside director policy disclosed in April 2024 proxy.

## SEC filing metadata
- accession: 0001899287-24-000069
- form_type: 8-K
- ticker: AMPX
- cik: 0001899287
- company_name: Amprius Technologies, Inc.
- filed_at: 2024-08-14T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000069/0001899287-24-000069-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000069/ampx-20240812.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001899287-24-000069
- JSON: https://secwatch.observer/filing/0001899287-24-000069.json
- Plain text: https://secwatch.observer/filing/0001899287-24-000069.txt

## Key facts
- Executive change
  Mary Gustanski resigned as member of the Board of Directors at Amprius Technologies, Inc..
  - Action: resigned
  - Role: member of the Board of Directors
  source text: On August 12, 2024, Mary Gustanski resigned from her position as a member of the Board of Directors (the “Board”) of Amprius Technologies, Inc. (the “Company”) and from all of its committees and advisory councils, which resignation was effective on that date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000069/0001899287-24-000069-index.htm
- Executive change
  Livingston 'Tony' Satterthwaite was elected as Class II director at Amprius Technologies, Inc..
  - Action: elected
  - Role: Class II director
  source text: On August 13, 2024, the Board elected Livingston “Tony” Satterthwaite to serve as a Class II director to fill the vacancy created by Ms. Gustanski's resignation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1899287/000189928724000069/0001899287-24-000069-index.htm

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