RBB (RBB) director Joyce Wong Lee gains 2,762 RSUs and 2,762 shares

Rhea-AI Filing Summary

RBB Bancorp director Joyce Wong Lee reported compensation-related stock activity involving restricted stock units (RSUs). On May 21, 2026, she exercised RSUs to acquire 2,062 shares of RBB common stock at $0.00 per share and a further 700 shares in a separate exercise, increasing her direct common stock holdings to 51,825 shares after the reported transactions.

On the same date, she received a new grant of 2,762 RSUs, each convertible into one share of common stock. Footnotes explain that 2,062 RSUs vested immediately from this 2026 grant and 700 RSUs will vest on the one-year anniversary of the grant date. A prior May 21, 2025 grant of 5,142 RSUs had already largely vested, with 700 RSUs vesting on its one-year anniversary. All reported activity reflects equity awards and vesting, with no open-market buying or selling.

Insights

Equity compensation analyst

Routine director RSU grant and vesting, no open-market trades.

The filing shows Joyce Wong Lee receiving and vesting restricted stock units in RBB Bancorp. She exercised RSUs to acquire 2,762 shares of common stock at $0.00 per share and reported a new grant of 2,762 RSUs.

These transactions are typical equity compensation events, not discretionary market purchases or sales. After the activity, she directly holds 51,825 common shares plus 2,762 RSUs outstanding. With no sales, the signal is neutral and mainly reflects ongoing alignment of director pay with shareholder interests.

Insider Trade Summary

2,762 shares exercised/converted

Mixed 5 txns

Insider Wong Lee Joyce

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	700	$0.00	--
Grant/Award	Restricted Stock Units	2,762	$0.00	--
Exercise	Restricted Stock Units	2,062	$0.00	--
Exercise	Common Stock, No Par Value	700	$0.00	--
Exercise	Common Stock, No Par Value	2,062	$0.00	--

Holdings After Transaction: Restricted Stock Units — 0 shares (Direct, null); Common Stock, No Par Value — 51,825 shares (Direct, null)

Footnotes (1)

1. Restricted stock units convert into common stock on a one-for-one basis. On May 21, 2025, the reported person was granted 5,142 restricted stock units: 4,442 immediately vested and 700 vested on the one year anniversary of the grant date. On May 21, 2026, the reporting person was granted 2,762 restricted stock units: 2,062 vested immediately and 700 will vest on the one year anniversary of the grant date.

Key Figures

RSU exercises into common stock: 2,062 shares Additional RSU exercise: 700 shares New RSU grant 2026: 2,762 RSUs +4 more

7 metrics

RSU exercises into common stock 2,062 shares Common Stock acquired via RSU exercise on May 21, 2026

Additional RSU exercise 700 shares Common Stock acquired via separate RSU exercise on May 21, 2026

New RSU grant 2026 2,762 RSUs Restricted stock units granted on May 21, 2026

Immediate vest from 2026 grant 2,062 RSUs Portion of 2026 RSU grant vesting immediately per footnote

Deferred vest from 2026 grant 700 RSUs Vest on one-year anniversary of May 21, 2026 grant

Prior RSU grant 2025 5,142 RSUs Restricted stock units granted on May 21, 2025

Common shares after transactions 51,825 shares Total RBB common stock directly held after reported activity

Key Terms

Restricted stock units, Exercise or conversion of derivative security, Grant, award, or other acquisition, Common Stock, No Par Value

4 terms

Restricted stock units financial

"On May 21, 2026, the reporting person was granted 2,762 restricted stock units"

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.

Exercise or conversion of derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security""

Grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition""

Common Stock, No Par Value financial

"security_title": "Common Stock, No Par Value""

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^*

Wong Lee Joyce

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/21/2026

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	05/21/2026		M		700	A	$0	51,825	D
Common Stock, No Par Value	05/21/2026		M		2,062	A	$0	53,887	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	(1)	05/21/2026		M			700	(2)	(2)	Common Stock	700	$0	0	D
Restricted Stock Units	(1)	05/21/2026		A		2,762		(3)	(3)	Common Stock	2,762	$0	2,762	D
Restricted Stock Units	(1)	05/21/2026		M			2,062	(3)	(3)	Common Stock	2,062	$0	700	D

Explanation of Responses:

1. Restricted stock units convert into common stock on a one-for-one basis.

2. On May 21, 2025, the reported person was granted 5,142 restricted stock units: 4,442 immediately vested and 700 vested on the one year anniversary of the grant date.

3. On May 21, 2026, the reporting person was granted 2,762 restricted stock units: 2,062 vested immediately and 700 will vest on the one year anniversary of the grant date.

	/s/ Joyce Wong Lee	05/26/2026
	** 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 did RBB (RBB) director Joyce Wong Lee report in this Form 4?

She reported equity compensation activity, including exercises of restricted stock units into common stock and a new restricted stock unit grant. All transactions involved company-awarded shares, with no open-market purchases or sales disclosed in the filing for RBB Bancorp.

How many RBB Bancorp shares did Joyce Wong Lee acquire through RSU exercises?

She acquired 2,062 shares of RBB Bancorp common stock in one RSU exercise and 700 shares in another. Both exercises occurred on May 21, 2026, at a conversion price of $0.00 per share as part of her equity compensation.

What new restricted stock unit grant did Joyce Wong Lee receive from RBB?

On May 21, 2026, she received a grant of 2,762 restricted stock units, each convertible into one share of RBB common stock. Footnotes state 2,062 vested immediately, while 700 RSUs will vest on the one-year anniversary of the grant date.

How many RBB Bancorp common shares does Joyce Wong Lee hold after these transactions?

Following the reported RSU exercises, she directly holds 51,825 shares of RBB Bancorp common stock. This reflects an increase from the vesting and conversion of restricted stock units, with no sales of common shares reported in this Form 4.

Did Joyce Wong Lee buy or sell RBB stock on the open market in this Form 4?

No open-market trades were reported. All transactions involve derivative code M exercises and an A-code grant, meaning RSU vesting and awards at $0.00 per share. The filing shows compensation-related share acquisitions rather than discretionary market purchases or sales.

What prior RSU grant to Joyce Wong Lee is referenced in the footnotes for RBB?

A May 21, 2025 grant of 5,142 RSUs is referenced. Of these, 4,442 restricted stock units vested immediately at grant, and 700 vested on the one-year anniversary. This context explains earlier equity awards underlying some of the 2026 RSU exercises.