{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-24-217558","form_type":"8-K","ticker":"CTKB","cik":"0001831915","company_name":"Cytek Biosciences, Inc.","filed_at":"2024-09-12T23:59:59+00:00","discovered_at":"2026-05-14T18:03:14.778065+00:00","generated_at":"2026-05-31T05:17:21.324677+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"calibrated_materiality_score":0.5,"confidence":"high","headline":"Cytek Biosciences COO Paul Christopher Williams resigns effective Sept 27, 2024","bullets":["COO Paul Christopher Williams resigned on Sept 9, 2024, effective Sept 27, 2024, to pursue another career opportunity.","No replacement has been named; CEO Wenbin Jiang remains in charge.","Resignation is voluntary and not due to any disagreement with the company."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-24-217558","json":"https://secwatch.observer/filing/0001193125-24-217558.json","markdown":"https://secwatch.observer/filing/0001193125-24-217558.md","text":"https://secwatch.observer/filing/0001193125-24-217558.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1831915/000119312524217558/0001193125-24-217558-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1831915/000119312524217558/d891638d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-31T05:17:21.324677+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":"3e7ff86996","claim":"Paul Christopher Williams resigned as Chief Operating Officer at Cytek Biosciences, Inc..","evidence_excerpt":"On September 9, 2024, Paul Christopher Williams submitted his resignation from his position as the Chief Operating Officer of Cytek Biosciences, Inc. (the “Company”), effective as of September 27, 2024, to pursue another career opportunity.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1831915/000119312524217558/0001193125-24-217558-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Chief Operating Officer"}]}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}