[Form 4] FIVE STAR BANCORP Insider Trading Activity

Rhea-AI Filing Summary

Five Star Bancorp director Warren P. Kashiwagi reported a stock grant under the company’s 2021 Equity Incentive Plan. On January 29, 2026, he was awarded 974 shares of common stock at a price of $0 per share, reflecting a compensatory equity grant rather than a market purchase.

All 974 shares are scheduled to vest on December 31, 2026, if he continues to serve as a director on that date. After this grant, he beneficially owns 6,370 shares of Five Star Bancorp common stock in direct ownership.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Kashiwagi Warren Paul

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	974	$0.00	--

Holdings After Transaction: Common Stock — 6,370 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Kashiwagi Warren Paul

(Last) (First) (Middle)

C/O FIVE STAR BANCORP

3100 ZINFANDEL DRIVE, SUITE 100

(Street)

RANCHO CORDOVA CA 95670

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
FIVE STAR BANCORP [ FSBC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/29/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/29/2026		A		974(1)	A	$0	6,370	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Granted pursuant to the Five Star Bancorp 2021 Equity Incentive Plan with all shares scheduled to vest on December 31, 2026, provided the reporting person, Mr. Kashiwagi, remains as a director with Five Star Bancorp on that date.

Remarks:

	/s/ Warren P. Kashiwagi, by Heather C. Luck, Attorney-in-Fact	02/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Warren P. Kashiwagi report in this Five Star Bancorp (FSBC) Form 4?

Warren P. Kashiwagi reported receiving 974 shares of Five Star Bancorp common stock. The award was granted on January 29, 2026 as equity compensation and increased his directly held beneficial ownership to 6,370 shares after the reported transaction.

How many Five Star Bancorp (FSBC) shares were granted to the director?

The director received a grant of 974 shares of Five Star Bancorp common stock. These shares were issued at a stated price of $0 per share as part of an equity incentive award rather than an open-market purchase or sale transaction.

When do Warren P. Kashiwagi’s new Five Star Bancorp (FSBC) shares vest?

All 974 granted shares are scheduled to vest on December 31, 2026. Vesting is conditioned on Mr. Kashiwagi remaining a director of Five Star Bancorp through that date under the terms of the 2021 Equity Incentive Plan.

What is Warren P. Kashiwagi’s total Five Star Bancorp (FSBC) ownership after this grant?

After the January 29, 2026 award, Warren P. Kashiwagi beneficially owns 6,370 shares of Five Star Bancorp common stock. The filing reports this amount as directly held ownership following the completion of the reported equity grant transaction.

Was cash paid for the Five Star Bancorp (FSBC) shares reported in this Form 4?

No cash was paid for the 974 shares, which were reported at a price of $0 per share. The shares represent an equity incentive grant to the director, not a purchase in the open market or a cash exercise of options.

Under which plan were the Five Star Bancorp (FSBC) shares granted to the director?

The 974-share grant was made under the Five Star Bancorp 2021 Equity Incentive Plan. The filing notes that the shares vest on December 31, 2026, if Mr. Kashiwagi continues serving as a director on that date.