---
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"
generated_at: "2026-06-19T07:56:34.338520+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Director Ko-Yen Lin resigns from RBB Bancorp board effective March 1, 2023

## Summary
- 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.

## SEC filing metadata
- 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
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02, 9.01
- 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

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-23-003834
- JSON: https://secwatch.observer/filing/0001437749-23-003834.json
- Plain text: https://secwatch.observer/filing/0001437749-23-003834.txt

## Key facts
- Executive change
  Ko-Yen Lin resigned as Director at RBB Bancorp.
  - Action: resigned
  - Role: Director
  source text: 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_url: https://www.sec.gov/Archives/edgar/data/1499422/000143774923003834/0001437749-23-003834-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.