{"schema_version":"secwatch.filing_event.v1","accession":"0001493152-26-013879","form_type":"8-K","ticker":"MAIA","cik":"0001878313","company_name":"MAIA Biotechnology, Inc.","filed_at":"2026-03-31T23:59:59+00:00","discovered_at":"2026-05-14T18:02:36.652816+00:00","generated_at":"2026-05-15T08:14:25.285188+00:00","sec_items":["8.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"MAIA reports OS >2 years for 8 NSCLC patients; 1 at 33 months in 3L","bullets":["Eight patients treated with ateganosine + cemiplimab in Phase 2 THIO-101 trial had overall survival exceeding 24 months.","One 3rd-line patient survived 33 months vs. expected 5.8 months; four 2nd-line patients survived >30 months vs. SOC 10.5 months.","All patients had failed prior checkpoint inhibitor therapy; 5 of 8 patients have ongoing survival follow-up.","Phase 3 pivotal trial and Part C expansion (up to 48 patients in Asia/Europe) are enrolling.","Press release references a $50B+ global immunotherapy market as target opportunity."],"urls":{"canonical":"https://secwatch.observer/filing/0001493152-26-013879","json":"https://secwatch.observer/filing/0001493152-26-013879.json","markdown":"https://secwatch.observer/filing/0001493152-26-013879.md","text":"https://secwatch.observer/filing/0001493152-26-013879.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1878313/000149315226013879/0001493152-26-013879-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1878313/000149315226013879/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T08:14:25.285188+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"}