{"schema_version":"secwatch.filing_event.v1","accession":"0001213900-26-050928","form_type":"8-K","ticker":"ARCI","cik":"0002083910","company_name":"Archimedes Tech SPAC Partners III Co.","filed_at":"2026-05-01T23:59:59+00:00","discovered_at":"2026-05-14T18:02:33.484462+00:00","generated_at":"2026-05-15T00:24:38.063649+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Archimedes Tech SPAC Partners III CEO Long resigns; Ben Landen appointed as CEO","bullets":["Long Long resigned as CEO effective April 28, 2026; not due to disagreement with the Company.","Long will continue to serve as a member of the board of directors.","Ben Landen appointed CEO immediately; will remain Chief Technology Officer.","Landen previously served as CEO and director from August to December 2025.","Landen co-founded Superposition Venture Partners; previously VP at Cyngn Inc."],"urls":{"canonical":"https://secwatch.observer/filing/0001213900-26-050928","json":"https://secwatch.observer/filing/0001213900-26-050928.json","markdown":"https://secwatch.observer/filing/0001213900-26-050928.md","text":"https://secwatch.observer/filing/0001213900-26-050928.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/2083910/000121390026050928/0001213900-26-050928-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/2083910/000121390026050928/ea028825401-8k_archimedes.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T00:24:38.063649+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":"826aae2fa5","claim":"Ben Landen was appointed as Chief Executive Officer at Archimedes Tech SPAC Partners III Co..","evidence_excerpt":"On the same date, Ben Landen was appointed as the Chief Executive Officer by the Company’s board of directors, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/2083910/000121390026050928/0001213900-26-050928-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Executive Officer"}],"fact_type":"executive_change"},{"claim_id":"e305ce938e","claim":"Long Long resigned as Chief Executive Officer at Archimedes Tech SPAC Partners III Co..","evidence_excerpt":"On April 28, 2026, Long Long notified the board of directors of Archimedes Tech SPAC Partners III Co. (the “Company”) of his resignation as Chief Executive Officer of the Company, effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/2083910/000121390026050928/0001213900-26-050928-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Executive Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}