{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-253538","form_type":"8-K","ticker":"CTKB","cik":"0001831915","company_name":"Cytek Biosciences, Inc.","filed_at":"2026-06-02T20:15:52+00:00","discovered_at":"2026-06-02T20:17:06.756147+00:00","generated_at":"2026-06-02T20:17:52.634735+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 SVP Global Sales Philippe Busque resigns effective June 5","bullets":["Philippe Busque, Ph.D., SVP Global Sales and Services, resigned effective June 5, 2026.","Resignation is to pursue another career opportunity; not due to disagreement with company operations.","No successor or interim appointment announced in the filing."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-253538","json":"https://secwatch.observer/filing/0001193125-26-253538.json","markdown":"https://secwatch.observer/filing/0001193125-26-253538.md","text":"https://secwatch.observer/filing/0001193125-26-253538.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1831915/000119312526253538/0001193125-26-253538-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1831915/000119312526253538/d161903d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-02T20:17:52.634735+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":"fb1c5261b7","claim":"Philippe Busque resigned as Senior Vice President, Global Sales and Services at Cytek Biosciences, Inc..","evidence_excerpt":"On May 27, 2026, Philippe Busque, Ph.D. submitted his resignation from his position as the Senior Vice President, Global Sales and Services of Cytek Biosciences, Inc. (the “Company”), effective as of June 5, 2026, to pursue another career opportunity.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1831915/000119312526253538/0001193125-26-253538-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Senior Vice President, Global Sales and Services"}]}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}