Michael Anthony Rizzo - 21 May 2026 Form 4 Insider Report for FIVE STAR BANCORP (FSBC)

Reporting relationship: EVP, Chief Banking Officer
Issuer ticker: FSBC
Reported as of: 21 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 26 May 2026, 16:11:11 UTC
Prior SEC filing: 16 Dec 2025
Source filing: View source filing
Reporting owner signature: /s/ Michael A. Rizzo, by Heather C. Luck, Attorney-in-Fact

Key filing fact

Michael Anthony Rizzo filed Form 4 for FIVE STAR BANCORP (FSBC) on 26 May 2026.

Key facts

This page summarizes Michael Anthony Rizzo's Form 4 filing for FIVE STAR BANCORP (FSBC).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 26 May 2026, 16:11.

Change

Previous filing in this sequence was filed on 16 Dec 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001856568 Primary reporting owner

Rizzo Michael Anthony

Relationship: EVP, Chief Banking Officer
Address: C/O FIVE STAR BANCORP, 3100 ZINFANDEL DRIVE, SUITE 100, RANCHO CORDOVA
Signature: /s/ Michael A. Rizzo, by Heather C. Luck, Attorney-in-Fact
Signature date: 26 May 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

FSBC transaction

Common Stock

Award

Transaction value
Shares: +2,715
Change %: +8.1%
Price: $0.000000^*
Shares after: 36,084
Date: 21 May 2026
Ownership: By self as trustee
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan. The award of restricted stock vests annually in equal installments over five years, provided Mr. Rizzo, the reporting person, remains employed by Five Star Bancorp on the respective vesting dates.

Footnote F2

Includes 6,000 shares granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan (including 2,400 shares which have vested and 3,600 which are scheduled to vest in equal installments over the remainder of a five-year period, provided Mr. Rizzo remains employed by Five Star Bancorp on the respective vesting dates) and 3,629 shares granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan (including 726 shares which have vested and 2,903 which are scheduled to vest in equal installments over the remainder of a five-year period, provided Mr. Rizzo remains employed by Five Star Bancorp on the respective vesting dates).

Footnote F3

Shares are held by The Rizzo Family Trust, dated December 4, 2019, for which Mr. Rizzo serves as trustee.