---
schema_version: "secwatch.filing_event.v1"
accession: "0001903596-26-000163"
form_type: "8-K"
ticker: "GSTX"
cik: "0001497649"
company_name: "Graphene & Solar Technologies Ltd"
filed_at: "2026-04-23T23:59:59+00:00"
generated_at: "2026-05-15T04:31:11.816858+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# CFO David Halstead resigns; Kristine Woo appointed interim CFO

## Summary
- David Halstead resigned as CFO and board member effective April 21, 2026, with no disagreement over operations.
- Kristine Woo appointed interim CFO effective immediately; search for permanent CFO launched.
- Compensation follows executive policies; no arrangements or reportable transactions with Woo.

## SEC filing metadata
- accession: 0001903596-26-000163
- form_type: 8-K
- ticker: GSTX
- cik: 0001497649
- company_name: Graphene & Solar Technologies Ltd
- filed_at: 2026-04-23T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1497649/000190359626000163/0001903596-26-000163-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1497649/000190359626000163/gstx_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001903596-26-000163
- JSON: https://secwatch.observer/filing/0001903596-26-000163.json
- Plain text: https://secwatch.observer/filing/0001903596-26-000163.txt

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