{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-22-275058","form_type":"8-K","ticker":"CTKB","cik":"0001831915","company_name":"Cytek Biosciences, Inc.","filed_at":"2022-11-01T23:59:59+00:00","discovered_at":"2026-05-14T18:03:52.508180+00:00","generated_at":"2026-06-22T19:14:48.378625+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.6,"calibrated_materiality_score":0.6,"confidence":"high","headline":"Cytek Biosciences appoints Chris Williams as COO, effective Oct. 31, 2022","bullets":["Chris Williams appointed COO, reporting to CEO Wenbin Jiang; focused on scaling global operations.","Annual base salary of $395,000; target bonus 50% of base; $100,000 sign-on cash bonus (clawback within 12 months).","Equity grants of $500,000, split 50% stock options and 50% RSUs, vesting over four years.","Williams previously VP at Thermo Fisher Scientific and Bayer Pharmaceuticals."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-22-275058","json":"https://secwatch.observer/filing/0001193125-22-275058.json","markdown":"https://secwatch.observer/filing/0001193125-22-275058.md","text":"https://secwatch.observer/filing/0001193125-22-275058.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1831915/000119312522275058/0001193125-22-275058-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1831915/000119312522275058/d405062d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-22T19:14:48.378625+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":"65a568ff0a","claim":"Chris Williams was appointed as Chief Operating Officer at Cytek Biosciences, Inc..","evidence_excerpt":"the Board of Directors (the “Board”) of Cytek Biosciences, Inc. (the “Company”) announced the appointment of Chris Williams as the Company’s Chief Operating Officer, effective October 31, 2022.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1831915/000119312522275058/0001193125-22-275058-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"appointed"},{"label":"Role","value":"Chief Operating Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}