{"schema_version":"secwatch.filing_event.v1","accession":"0001437749-23-003834","form_type":"8-K","ticker":"RBB","cik":"0001499422","company_name":"RBB Bancorp","filed_at":"2023-02-17T23:59:59+00:00","discovered_at":"2026-05-14T18:03:45.271808+00:00","generated_at":"2026-06-19T07:56:34.338520+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"Director Ko-Yen Lin resigns from RBB Bancorp board effective March 1, 2023","bullets":["Ko-Yen Lin resigned from RBB Bancorp and Royal Business Bank boards, citing health reasons.","Resignation effective March 1, 2023; also vacated committee roles and subsidiary boards.","No successor or replacement for Lin's board seat announced in the filing."],"urls":{"canonical":"https://secwatch.observer/filing/0001437749-23-003834","json":"https://secwatch.observer/filing/0001437749-23-003834.json","markdown":"https://secwatch.observer/filing/0001437749-23-003834.md","text":"https://secwatch.observer/filing/0001437749-23-003834.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1499422/000143774923003834/0001437749-23-003834-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1499422/000143774923003834/rbb20230217_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-19T07:56:34.338520+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":"6e4b339873","claim":"Ko-Yen Lin resigned as Director at RBB Bancorp.","evidence_excerpt":"On February 15, 2023, Mr. Ko-Yen Lin resigned from the board of directors of RBB Bancorp and its wholly-owned subsidiary, Royal Business Bank (collectively, the “Company”), effective March 1, 2023.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1499422/000143774923003834/0001437749-23-003834-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"}