{"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","discovered_at":"2026-05-14T18:02:32.368245+00:00","generated_at":"2026-05-15T04:31:11.816858+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"CFO David Halstead resigns; Kristine Woo appointed interim CFO","bullets":["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."],"urls":{"canonical":"https://secwatch.observer/filing/0001903596-26-000163","json":"https://secwatch.observer/filing/0001903596-26-000163.json","markdown":"https://secwatch.observer/filing/0001903596-26-000163.md","text":"https://secwatch.observer/filing/0001903596-26-000163.txt","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"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T04:31:11.816858+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}