{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-26-030000","form_type":"8-K","ticker":"NNE","cik":"0001923891","company_name":"Nano Nuclear Energy Inc.","filed_at":"2026-06-25T01:09:14+00:00","discovered_at":"2026-06-25T10:05:00.246799+00:00","generated_at":"2026-06-25T10:05:29.366879+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"negative","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Nano Nuclear terminates CTO Florent Heidet; CEO James Walker named interim Head","bullets":["CTO and Head of Reactor Development Dr. Florent Heidet terminated effective June 22, 2026.","Termination and appointment of interim were unanimously approved by the Board.","CEO James Walker appointed as Interim Head of Reactor Development.","No family relationships or reportable transactions involving Mr. Walker."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-26-030000","json":"https://secwatch.observer/filing/0001493152-26-030000.json","markdown":"https://secwatch.observer/filing/0001493152-26-030000.md","text":"https://secwatch.observer/filing/0001493152-26-030000.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1923891/000149315226030000/0001493152-26-030000-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1923891/000149315226030000/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-25T10:05:29.366879+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"}