{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-24-011737","form_type":"8-K","ticker":"ORKA","cik":"0000907654","company_name":"Oruka Therapeutics, Inc.","filed_at":"2024-02-06T23:59:59+00:00","discovered_at":"2026-05-14T18:03:27.239643+00:00","generated_at":"2026-06-06T08:51:28.846894+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Two ARCA biopharma directors resign; board reduced from eight to six","bullets":["Raymond L. Woosley and Dan Mitchell resigned from ARCA biopharma board effective Feb 2, 2024.","Resignations not due to any disagreement with company's operations, policies, or practices.","Board size reduced from eight to six directors; no new directors appointed."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-24-011737","json":"https://secwatch.observer/filing/0000950170-24-011737.json","markdown":"https://secwatch.observer/filing/0000950170-24-011737.md","text":"https://secwatch.observer/filing/0000950170-24-011737.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/907654/000095017024011737/0000950170-24-011737-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/907654/000095017024011737/abio-20240202.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-06T08:51:28.846894+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":"12681d6e02","claim":"Raymond L. Woosley resigned as director at Oruka Therapeutics, Inc..","evidence_excerpt":"On February 2, 2024, Raymond L. Woosley, M.D., Ph.D. and Dan Mitchell each resigned from the board of directors (the “ Board ”) of ARCA biopharma, Inc., a Delaware corporation (“ ARCA ”), effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/907654/000095017024011737/0000950170-24-011737-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"director"}],"fact_type":"executive_change"},{"claim_id":"f50e76f0b6","claim":"Dan Mitchell resigned as director at Oruka Therapeutics, Inc..","evidence_excerpt":"On February 2, 2024, Raymond L. Woosley, M.D., Ph.D. and Dan Mitchell each resigned from the board of directors (the “ Board ”) of ARCA biopharma, Inc., a Delaware corporation (“ ARCA ”), effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/907654/000095017024011737/0000950170-24-011737-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}