RBB EVP exercises options, settles taxes in shares

RBB Bancorp EVP Tsu Te Huang exercised equity awards and settled taxes in shares.

Rhea-AI Filing Summary

RBB Bancorp EVP Tsu Te Huang exercised equity awards and settled taxes in shares. On 05/08/2026, Huang exercised derivative securities to acquire 671 shares of Common Stock, No Par Value, at a reported price of $24.05 per share. In a related tax-withholding disposition, 241 common shares were withheld to cover tax obligations rather than sold on the open market.

Following these transactions, Huang directly owns 16,158 common shares. The filing also shows Restricted Stock Units tied to 743 underlying common shares, which will vest over time, including tranches vesting on 02/21/2027 and in three equal annual installments beginning on 05/08/2027, 05/08/2028 and 05/08/2029.

Insider Trade Summary

671 shares exercised/converted

Exercise 4 txns

Insider Huang Tsu Te

Role EVP

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	671	$0.00	$0.00
Exercise	Common Stock, No Par Value	671	$24.05	$16K
Exercise Price or Tax Liability	Common Stock, No Par Value	241	$24.05	$6K
holding	Restricted Stock Units	--	--	--

Holdings After Transaction: Restricted Stock Units — 2,753 contracts for 743 underlying shares (Direct); Common Stock, No Par Value — 16,158 shares (Direct)

Footnotes (3)

1. F1. There will be no expiration date once restricted stock units vest.
2. F2. These remaining restricted stock units vest on 02/21/2027.
3. F3. These remaining restricted stock units vest in three equal annual installments beginning on 05/08/2027, 05/08/2028 and 05/08/2029.

Key Figures

Derivative exercise shares: 671 shares Exercise price per share: $24.05/share Tax withholding shares: 241 shares +4 more

7 metrics

Derivative exercise shares 671 shares Common Stock, No Par Value, exercised on 05/08/2026

Exercise price per share $24.05/share Price reported for 671 common shares on 05/08/2026

Tax withholding shares 241 shares Common shares withheld for tax obligations on 05/08/2026

Common shares held after transactions 16,399 shares Total direct common stock holding after 05/08/2026 activity

Underlying shares for remaining RSUs 743 shares Common Stock underlying remaining Restricted Stock Units

RSU vesting date (single tranche) 02/21/2027 Remaining Restricted Stock Units vest on this date

RSU vesting schedule (three installments) Beginning 05/08/2027 Equal annual RSU installments vest on 05/08/2027, 05/08/2028, 05/08/2029

Key Terms

Restricted Stock Units, tax-withholding disposition, derivative exercise/conversion, total_shares_following_transaction, +1 more

5 terms

Restricted Stock Units financial

"security_title: "Restricted Stock Units" and footnotes describing remaining restricted stock units vesting"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax-withholding disposition financial

"transaction_action: "tax-withholding disposition" for 241 common shares"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

derivative exercise/conversion financial

"transaction_action: "derivative exercise/conversion" for 671 common shares"

total_shares_following_transaction financial

""total_shares_following_transaction": "16158.0000" and "16399.0000" fields"

underlying security financial

""underlying_security_title": "Common Stock" and "underlying_security_shares" fields"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did RBB (RBB Bancorp) report for EVP Tsu Te Huang?

EVP Tsu Te Huang exercised derivative securities to acquire 671 common shares at $24.05 per share and had 241 shares withheld to cover tax obligations. These actions reflect compensation-related equity activity rather than open-market buying or selling.

How many RBB Bancorp common shares does EVP Tsu Te Huang hold after this Form 4?

After the reported transactions, EVP Tsu Te Huang directly holds 16,399 shares of RBB Bancorp common stock. This figure includes the effect of both the derivative exercise and the tax-withholding share disposition recorded on 05/08/2026.

What does the tax-withholding disposition on RBB’s Form 4 mean?

The filing records a tax-withholding disposition of 241 common shares at $24.05 per share. These shares were withheld by the issuer to pay tax liabilities on equity compensation, and do not represent an open-market sale by EVP Tsu Te Huang.

What derivative exercise did RBB Bancorp’s EVP complete on 05/08/2026?

On 05/08/2026, EVP Tsu Te Huang completed a derivative exercise involving 671 common shares at a reported price of $24.05 per share. This converted previously granted equity awards into directly held common stock as part of compensation.

What Restricted Stock Units does RBB Bancorp’s EVP have remaining after the transactions?

The filing shows remaining Restricted Stock Units linked to 743 underlying common shares. Footnotes state some units vest on 02/21/2027 and others in three equal annual installments starting on 05/08/2027, then 05/08/2028 and 05/08/2029.

Does the RBB Bancorp Form 4 show any open-market buying or selling by the EVP?

The transactions consist of a derivative exercise and a tax-withholding disposition of shares. The filing does not report any open-market purchases or sales; it reflects compensation-related equity activity and associated tax settlement in stock.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/08/2026 - 08:02 PM EDT Learn about SEC filing dates

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^*

Huang Tsu Te

(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)
05/08/2026

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	05/08/2026		M		671	A	$24.05	16,399	D
Common Stock, No Par Value	05/08/2026		F		241	D	$24.05	16,158	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	743		743	D
Restricted Stock Units	$24.05	05/08/2026		M			671	(3)	(1)	Common Stock	2,681	$0	2,010	D

Explanation of Responses:

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

2. These remaining restricted stock units vest on 02/21/2027.

3. These remaining restricted stock units vest in three equal annual installments beginning on 05/08/2027, 05/08/2028 and 05/08/2029.

Remarks:

Shares issued for vesting of 5/08/2025 RSU grant and shares disposed in settlement of tax withholding obligations for such RSU vesting.

	/s/ Tsu Te Huang	05/08/2026
	** 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)