---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-23-026476"
form_type: "8-K"
ticker: "AQMS"
cik: "0001621832"
company_name: "Aqua Metals, Inc."
filed_at: "2023-09-20T23:59:59+00:00"
generated_at: "2026-06-10T12:04:41.811296+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Aqua Metals appoints Dr. Sung Yi to Board nominated by Yulho

## Summary
- Dr. Sung Yi appointed to Aqua Metals Board effective September 14, 2023.
- Yi nominated by Yulho Co., Ltd. under nomination rights from July 18, 2023 Securities Purchase Agreement.
- Yi brings 30+ years battery/fuel cell engineering experience; currently non-executive director of Yulho.
- Yi served as professor and director at Hanyang University, Seoul, Korea.

## SEC filing metadata
- accession: 0001437749-23-026476
- form_type: 8-K
- ticker: AQMS
- cik: 0001621832
- company_name: Aqua Metals, Inc.
- filed_at: 2023-09-20T23:59:59+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/1621832/000143774923026476/0001437749-23-026476-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1621832/000143774923026476/aqms20230920_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-23-026476
- JSON: https://secwatch.observer/filing/0001437749-23-026476.json
- Plain text: https://secwatch.observer/filing/0001437749-23-026476.txt

## Key facts
- Executive change
  Sung Yi was appointed as director at Aqua Metals, Inc..
  - Action: appointed
  source text: On September 14, 2023, the Board of Directors (“Board”) of Aqua Metals, Inc, acting upon the recommendation of the Board’s Nominating and Corporate Governance Committee, appointed Sung Yi, Ph.D., P.E. to the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1621832/000143774923026476/0001437749-23-026476-index.htm

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