Company: FSBC
Filing Date: 2025-04-02
Form Type: DEF 14A
Source: 0001275168-25-000056
Chunk: 0

Company: FIVE STAR BANCORP
Filing Date: 2025-04-02
Form: DEF 14A
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### SCHEDULE 14A
<div align='center'>(Rule 14a-101)

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No.</div>

#### _____

#### )

Filed by the Registrant x

Filed by a Party other than the Registrant ¨

Check the appropriate box:

¨ Preliminary Proxy Statement

¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

x Definitive Proxy Statement

¨ Definitive Additional Materials

¨ Soliciting Material pursuant to §240.14a-12

#### Five Star Bancorp
<div align='center'>(Name of Registrant as Specified in Its Charter)

N/A

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)</div>

Payment of Filing Fee (Check all boxes that apply):

x No fee required.

¨ Fee paid previously with preliminary materials.

¨ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

April 2, 2025

Dear Shareholder:

You are cordially invited to attend the 2025 annual meeting of shareholders (the “annual meeting”) of Five Star Bancorp (“we,” “us,” or the “Company”). The annual meeting will be held in person at The Sutter Club, 1220 9th Street, Sacramento, California 95814 on May 15, 2025 at 3:30 p.m. Pacific Time.

#### Matters to be Voted On
The notice of the annual meeting is enclosed with this letter. The following important documents related to the annual meeting and your ownership of common stock of the Company are available at http://www.edocumentview.com/FSBC:

• Proxy statement

• Proxy card ( action required – please complete and return using the instructions on the proxy card )

• Annual Report on Form 10-K for the year ended December 31, 2024

At the annual meeting, shareholders will be asked to vote on the following two proposals, each of which is outlined in the Company’s proxy statement:

1. To elect 10 director nominees to the Company’s board of directors; and

2. To ratify the appointment of Moss Adams LLP as our independent registered