{"schema_version":"secwatch.filing_event.v1","accession":"0001564590-21-046136","form_type":"8-K","ticker":"ALXO","cik":"0001810182","company_name":"ALX ONCOLOGY HOLDINGS INC","filed_at":"2021-08-27T23:59:59+00:00","discovered_at":"2026-05-14T18:04:19.775835+00:00","generated_at":"2026-06-29T07:23:06.324334+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Director Graham Walmsley resigns from ALX Oncology board effective Aug 26, 2021","bullets":["Graham Walmsley resigned due to professional responsibilities at Logos Global Management, not due to any disagreement.","Board size reduced from seven to six directors.","Jason Lettmann appointed to the Audit Committee following the resignation."],"urls":{"canonical":"https://secwatch.observer/filing/0001564590-21-046136","json":"https://secwatch.observer/filing/0001564590-21-046136.json","markdown":"https://secwatch.observer/filing/0001564590-21-046136.md","text":"https://secwatch.observer/filing/0001564590-21-046136.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1810182/000156459021046136/0001564590-21-046136-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1810182/000156459021046136/alxo-8k_20210826.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-29T07:23:06.324334+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":"ecb7ba8018","claim":"Graham Walmsley resigned as director at ALX ONCOLOGY HOLDINGS INC.","evidence_excerpt":"On August 26, 2021, Graham Walmsley, M.D., Ph.D., informed the Board of Directors (the “Board”) of ALX Oncology Holdings Inc. (the “Company”) that he would resign from the Board effective August 26, 2021.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1810182/000156459021046136/0001564590-21-046136-index.htm","confidence":1.0,"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"}