{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-037472","form_type":"8-K","ticker":"OKLO","cik":"0001849056","company_name":"Oklo Inc.","filed_at":"2025-04-22T23:59:59+00:00","discovered_at":"2026-05-14T18:02:50.134780+00:00","generated_at":"2026-05-23T09:31:19.096463+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Sam Altman resigns as Chair and Class II director of Oklo, effective April 22, 2025","bullets":["Sam Altman resigned as Chair and Class II director of Oklo Inc., effective April 22, 2025.","Altman also left the Nominating and Corporate Governance Committee.","Resignation was not due to any disagreement with the company's operations, policies, or practices.","No replacement for Chair or board seat has been announced."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-037472","json":"https://secwatch.observer/filing/0001104659-25-037472.json","markdown":"https://secwatch.observer/filing/0001104659-25-037472.md","text":"https://secwatch.observer/filing/0001104659-25-037472.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1849056/000110465925037472/0001104659-25-037472-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1849056/000110465925037472/tm2512904d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-23T09:31:19.096463+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":[{"claim_id":"fac0b16a27","claim":"Sam Altman resigned as Chair and Class II director at Oklo Inc..","evidence_excerpt":"On April 22, 2025, Sam Altman notified the board of directors (the “Board”) of Oklo Inc. (the “Company”) that he intended to resign as Chair and as a Class II director of the Board, including as a member of the Board’s Nominating and Corporate Governance Committee, effective April 22, 2025.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1849056/000110465925037472/0001104659-25-037472-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chair and Class II director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}