Ann Ramirez Medina - 19 Nov 2025 Form 4 Insider Report for FIVE STAR BANCORP (FSBC)

Role: EVP & Chief Operating Officer
Signature: /s/ Lydia A. Ramirez-Medina, by Heather C. Luck, Attorney-in-Fact
Issuer symbol: FSBC
Transactions as of: 19 Nov 2025
Net transactions value: -$19,842
Form type: 4
Filing time: 20 Nov 2025, 15:18:04 UTC
Previous filing: 18 Aug 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Ramirez-Medina Lydia Ann	EVP & Chief Operating Officer	C/O FIVE STAR BANCORP, 3100 ZINFANDEL DRIVE, SUITE 100, RANCHO CORDOVA	/s/ Lydia A. Ramirez-Medina, by Heather C. Luck, Attorney-in-Fact	20 Nov 2025	0001857830

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FSBC	Common Stock	Sale	$19,842	-600	-5%	$33.07	11,360	19 Nov 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes 4,332 shares granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan (including 3,465 shares which have vested and 867 which are scheduled to vest in equal installments over the remainder of a five-year period, provided Ms. Ramirez remains employed by Five Star Bancorp on the respective vesting dates), 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 Ms. Ramirez 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 which are scheduled to vest in equal installments over a five-year period beginning in 2026.

Content

Includes 4,332 shares granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan (including 3,465 shares which have vested and 867 which are scheduled to vest in equal installments over the remainder of a five-year period, provided Ms. Ramirez remains employed by Five Star Bancorp on the respective vesting dates), 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 Ms. Ramirez 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 which are scheduled to vest in equal installments over a five-year period beginning in 2026.