RBB Bancorp (RBB) EVP exercises RSUs with shares withheld for tax

Rhea-AI Filing Summary

RBB Bancorp EVP Vincent Liu exercised restricted stock units that converted into 1,835 shares of common stock at an exercise price of $20.43 per share. To cover tax obligations from this vesting event, 659 common shares were withheld, leaving him with 17,325 common shares held directly after the transactions. Following this exercise, he also continues to hold restricted stock units representing 931 underlying common shares, which will vest in future installments as described in prior grant terms.

Insider Trade Summary

1,835 shares exercised/converted

Mixed 4 txns

Insider Liu Vincent

Role EVP

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	1,835	$0.00	--
Exercise	Common Stock, No Par Value	1,835	$20.43	$37K
Tax Withholding	Common Stock, No Par Value	659	$20.43	$13K
holding	Restricted Stock Units	--	--	--

Holdings After Transaction: Restricted Stock Units — 1,835 shares (Direct); Common Stock, No Par Value — 17,984 shares (Direct)

Footnotes (1)

1. There will be no expiration date once restricted stock units vest. These restricted stock units vest in three equal annual installments beginning one year after the 02/21/2024 date of grant. These restricted stock units vest in three equal annual installments beginning one year after the 03/20/2024 date of grant. The Form 4 has been updated to clarify that grants of RSUs will be settled in common stock.

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
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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^*

Liu Vincent

(Last) (First) (Middle)

1055 WILSHIRE BLVD

SUITE 1200

(Street)

LOS ANGELES CALIFORNIA 90017

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
RBB Bancorp [ RBB ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/20/2026

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

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

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

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, No Par Value	03/20/2026		M		1,835	A	$20.43	17,984	D
Common Stock, No Par Value	03/20/2026		F		659	D	$20.43	17,325	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
Restricted Stock Units	$0.0000							(2)	(1)	Common Stock(4)	931		931	D
Restricted Stock Units	$20.43	03/20/2026		M		1,835		(3)	(1)	Common Stock(4)	3,670	$0	1,835	D

Explanation of Responses:

1. There will be no expiration date once restricted stock units vest.

2. These restricted stock units vest in three equal annual installments beginning one year after the 02/21/2024 date of grant.

3. These restricted stock units vest in three equal annual installments beginning one year after the 03/20/2024 date of grant.

4. The Form 4 has been updated to clarify that grants of RSUs will be settled in common stock.

Remarks:

Shares issued for vesting of 3/20/2024 RSU grant and shares disposed in settlement of tax withholding obligations for such RSU vesting.

	/s/ Vincent Liu	03/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did RBB EVP Vincent Liu report on this Form 4?

Vincent Liu reported exercising restricted stock units into 1,835 RBB Bancorp common shares at $20.43 per share. The transaction reflects RSU vesting and conversion into stock, not an open-market purchase or sale.

How many RBB Bancorp shares does Vincent Liu hold after the reported transactions?

After the transactions, Vincent Liu directly holds 17,325 shares of RBB Bancorp common stock. This figure reflects the RSU conversion and the subsequent share withholding for tax obligations on the vesting event.

Were any RBB Bancorp shares sold by Vincent Liu in the market?

The filing shows a tax-withholding disposition of 659 shares coded “F,” indicating shares were withheld to satisfy tax or exercise obligations. It does not reflect an open-market sale initiated by Liu.

What restricted stock units does Vincent Liu still hold with RBB Bancorp?

Vincent Liu continues to hold restricted stock units linked to 931 underlying RBB Bancorp common shares. Footnotes explain these RSUs vest in three equal annual installments following their 2024 grant dates and settle in common stock.

At what price were Vincent Liu’s RBB Bancorp restricted stock units exercised?

The restricted stock units were exercised at $20.43 per share into 1,835 common shares of RBB Bancorp. This price reflects the conversion value used when the RSUs vested and were settled in common stock.