---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-062528"
form_type: "8-K"
ticker: "FSBC"
cik: "0001275168"
company_name: "FIVE STAR BANCORP"
filed_at: "2026-09-17T20:33:14+00:00"
generated_at: "2026-09-17T20:34:04.154174+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# Five Star Bancorp appoints Lydia Ramirez as EVP, Chief External Affairs Officer

## Summary
- Effective Sept 14, 2026, Lydia Ramirez named EVP & Chief External Affairs Officer, a newly created role; she was EVP & COO.
- Heather Luck, EVP & CFO, assumes added oversight of Operations along with existing CFO duties, effective same date.
- Ramirez brings ~20 yrs banking experience; will lead enterprise external affairs strategy across California markets.
- Company cites recent expansion to Lodi, Southern California, and Walnut Creek; no compensation change disclosed for Luck.

## SEC filing metadata
- accession: 0001628280-26-062528
- form_type: 8-K
- ticker: FSBC
- cik: 0001275168
- company_name: FIVE STAR BANCORP
- filed_at: 2026-09-17T20:33:14+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1275168/000162828026062528/0001628280-26-062528-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1275168/000162828026062528/fsbc-20260914.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-062528
- JSON: https://secwatch.observer/filing/0001628280-26-062528.json
- Plain text: https://secwatch.observer/filing/0001628280-26-062528.txt

## Key facts
- Executive change
  Lydia Ramirez was appointed as Executive Vice President and Chief External Affairs Officer at FIVE STAR BANCORP.
  - Action: appointed
  - Role: Executive Vice President and Chief External Affairs Officer
  source text: Effective September 14, 2026, Five Star Bancorp (the “Company”) appointed Lydia Ramirez to the newly established position of Executive Vice President and Chief External Affairs Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1275168/000162828026062528/0001628280-26-062528-index.htm

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