{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-282705","form_type":"8-K","ticker":"CYCN","cik":"0001755237","company_name":"Cyclerion Therapeutics, Inc.","filed_at":"2023-11-24T23:59:59+00:00","discovered_at":"2026-05-14T18:03:30.321309+00:00","generated_at":"2026-06-07T21:54:13.020972+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Director Ole Isacson resigns from Cyclerion board; replacement to be named","bullets":["Ole Isacson, M.D., Ph.D., resigned as director effective November 19, 2023.","He served as Chair of Compensation Committee and member of Audit Committee.","No disagreement with Cyclerion on operations, policies, or practices.","Company expects to appoint a new outside director shortly."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-282705","json":"https://secwatch.observer/filing/0001193125-23-282705.json","markdown":"https://secwatch.observer/filing/0001193125-23-282705.md","text":"https://secwatch.observer/filing/0001193125-23-282705.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1755237/000119312523282705/0001193125-23-282705-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1755237/000119312523282705/d600226d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-07T21:54:13.020972+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":"0de4130992","claim":"Ole Isacson resigned as director at Cyclerion Therapeutics, Inc..","evidence_excerpt":"On November 19, 2023, Ole Isacson, M.D., Ph.D., tendered his resignation as a director of Cyclerion Therapeutics, Inc. (the “Company”), effective immediately.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1755237/000119312523282705/0001193125-23-282705-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"}