FIVE STAR BANCORP — Director's Dealing 2025

May 2, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: FIVE STAR BANCORP (FSBC)
CIK: 0001275168
Period of Report: 2025-05-01

Reporting Person: Rizzo Michael Anthony (EVP & Chief Banking Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-01	Common Stock	A	3629	—	Acquired	33369	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	641	Indirect

Footnotes

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.

F2: Includes 7,000 shares granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan (including 4,200 shares which have vested and 2,800 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 6,000 shares granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan (including 1,200 shares which have vested and 4,800 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).

F3: Shares are held by The Rizzo Family Trust, dated December 4, 2019, for which Mr. Rizzo serves as trustee.

F4: Mr. Rizzo's child has direct ownership of 641 shares. Mr. Rizzo's child resides in Mr. Rizzo's household.