{"schema_version":"secwatch.filing_event.v1","accession":"0001559053-24-000028","form_type":"8-K","ticker":"PRTA","cik":"0001559053","company_name":"PROTHENA CORP PUBLIC LTD CO","filed_at":"2024-09-27T23:59:59+00:00","discovered_at":"2026-05-14T18:03:13.505506+00:00","generated_at":"2026-05-31T01:09:48.404234+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Prothena CMO Hideki Garren departs; Chad Swanson appointed Chief Development Officer","bullets":["Hideki Garren, M.D., Ph.D., resigns as Chief Medical Officer effective Sept 27, 2024, to lead global product development at a large pharma.","Chad Swanson, Ph.D., promoted to Chief Development Officer; will lead clinical development and medical functions.","Swanson joined Prothena in Jan 2023 from Eisai, where he led the lecanemab program for early Alzheimer's disease.","Prothena will initiate a search for a new Chief Medical Officer.","Swanson will join the executive leadership team and report to CEO Gene Kinney."],"urls":{"canonical":"https://secwatch.observer/filing/0001559053-24-000028","json":"https://secwatch.observer/filing/0001559053-24-000028.json","markdown":"https://secwatch.observer/filing/0001559053-24-000028.md","text":"https://secwatch.observer/filing/0001559053-24-000028.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1559053/000155905324000028/0001559053-24-000028-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1559053/000155905324000028/prta-20240923.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-31T01:09:48.404234+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":"1caff53237","claim":"Hideki Garren resigned as Chief Medical Officer at PROTHENA CORP PUBLIC LTD CO.","evidence_excerpt":"On September 23, 2024, Hideki Garren, M.D., Ph.D., Chief Medical Officer of Prothena Corporation plc (the “Company”) notified the Company that he is resigning from the Company effective September 27, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1559053/000155905324000028/0001559053-24-000028-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Medical Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}