---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-031091"
form_type: "8-K"
ticker: "HYSR"
cik: "0001481028"
company_name: "SUNHYDROGEN, INC."
filed_at: "2025-04-11T23:59:59+00:00"
generated_at: "2026-05-23T16:07:49.362421+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# SunHydrogen COO and Director Woosuk Kim resigns effective April 11, 2025

## Summary
- Woosuk Kim resigned as COO and Director of SunHydrogen, effective April 11, 2025.
- Resignation notice given on April 7, 2025; no reason specified in the filing.
- No successor or interim appointment announced for COO role.
- Company has not disclosed any disagreements or policy conflicts related to departure.

## SEC filing metadata
- accession: 0001213900-25-031091
- form_type: 8-K
- ticker: HYSR
- cik: 0001481028
- company_name: SUNHYDROGEN, INC.
- filed_at: 2025-04-11T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1481028/000121390025031091/0001213900-25-031091-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1481028/000121390025031091/ea0237862-8k_sunhydrogen.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-031091
- JSON: https://secwatch.observer/filing/0001213900-25-031091.json
- Plain text: https://secwatch.observer/filing/0001213900-25-031091.txt

## Key facts
- Executive change
  Woosuk Kim resigned as Chief Operating Officer and Director at SUNHYDROGEN, INC..
  - Action: resigned
  - Role: Chief Operating Officer and Director
  source text: On April 7, 2025, Woosuk Kim provided notice of his resignation as Chief Operating Officer and Director of SunHydrogen, Inc. (the “Company”). The resignation will take effect on April 11, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1481028/000121390025031091/0001213900-25-031091-index.htm

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