RBB Bancorp (NASDAQ: RBB) director adds shares through RSU grant and exercise

Rhea-AI Filing Summary

RBB Bancorp director Morris David Richard increased his equity exposure through compensation-related awards. On May 21, 2026, he was granted 2,646 restricted stock units (RSUs) that convert into common stock on a one-for-one basis. Of this grant, 1,946 RSUs vested immediately and were exercised into 1,946 shares of common stock at an exercise price of $0.00, bringing his direct common stock holdings to 45,368 shares.

The remaining 700 RSUs from the new grant are scheduled to vest on the one-year anniversary of the grant date. In addition, he holds RSUs covering 3,164 underlying common shares that vest on February 21, 2027, and RSUs covering 2,225 underlying common shares that vest on March 20, 2027, providing a pipeline of future stock deliveries if service-based conditions are met.

Insights

Equity compensation analyst

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

Morris David Richard, a director of RBB Bancorp, received a grant of 2,646 restricted stock units on May 21, 2026. Of these, 1,946 RSUs vested immediately and converted into 1,946 shares of common stock at an exercise price of $0.00.

Following this exercise, he holds 45,368 common shares directly, plus multiple blocks of unvested RSUs. These include 700 RSUs from the new grant that vest one year after the grant date, as well as RSUs covering 3,164 and 2,225 underlying shares scheduled to vest on February 21, 2027 and March 20, 2027, respectively.

The transactions are compensation-related (codes M and A) with no reported open-market buys or sells, and transactionSummary shows netBuySellShares of 0. This points to routine equity compensation mechanics rather than discretionary trading, so the informational signal for investors is limited.

Insider Trade Summary

1,946 shares exercised/converted

Mixed 5 txns

Insider Morris David Richard

Role null

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	2,646	$0.00	--
Exercise	Restricted Stock Units	1,946	$0.00	--
Exercise	Common Stock, No Par Value	1,946	$0.00	--
holding	Restricted Stock Units	--	--	--
holding	Restricted Stock Units	--	--	--

Holdings After Transaction: Restricted Stock Units — 2,646 shares (Direct, null); Common Stock, No Par Value — 45,368 shares (Direct, null)

Footnotes (1)

1. Restricted stock units convert into common stock on a one-for-one basis. These remaining restricted stock units vest on 02/21/2027. These remaining restricted stock units vest on 03/20/2027. On May 21, 2026, the reporting person was granted 2,646 restricted stock units: 1,946 vested immediately and 700 will vest on the one year anniversary of the grant date.

Key Figures

RSUs exercised: 1,946 shares Exercise price: $0.00 per share Common shares after transaction: 45,368 shares +4 more

7 metrics

RSUs exercised 1,946 shares Restricted stock units converted to common stock on May 21, 2026

Exercise price $0.00 per share Conversion of 1,946 RSUs into common stock

Common shares after transaction 45,368 shares Direct RBB common stock holdings following Form 4 transactions

New RSU grant 2,646 units Restricted stock units granted on May 21, 2026

RSUs vesting in 2027 (block 1) 3,164 underlying shares Restricted stock units scheduled to vest on February 21, 2027

RSUs vesting in 2027 (block 2) 2,225 underlying shares Restricted stock units scheduled to vest on March 20, 2027

Unvested portion of new grant 700 RSUs Will vest on one-year anniversary of May 21, 2026 grant

Key Terms

Restricted stock units, derivative security, vest, grant, award, or other acquisition

4 terms

Restricted stock units financial

"On May 21, 2026, the reporting person was granted 2,646 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.

derivative security financial

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

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

vest financial

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

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

grant, award, or other acquisition financial

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 05/26/2026 - 08:07 PM Accepted by SEC EDGAR 05/26/2026 - 08:07 PM 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^*

Morris David Richard

(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		1,946	A	$0	45,368	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)							(2)	(2)	Common Stock	2,225		2,225	D
Restricted Stock Units	(1)							(3)	(3)	Common Stock	3,164		3,164	D
Restricted Stock Units	(1)	05/21/2026		A		2,646		(4)	(4)	Common Stock	2,646	$0	2,646	D
Restricted Stock Units	(1)	05/21/2026		M			1,946	(4)	(4)	Common Stock	1,946	$0	700	D

Explanation of Responses:

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

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

3. These remaining restricted stock units vest on 03/20/2027.

4. On May 21, 2026, the reporting person was granted 2,646 restricted stock units: 1,946 vested immediately and 700 will vest on the one year anniversary of the grant date.

Remarks:

	/s/ David Morris	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 Bancorp) director Morris David Richard report in this Form 4?

He reported equity compensation activity, not open-market trading. On May 21, 2026, he exercised 1,946 restricted stock units into common stock and received a grant of 2,646 RSUs, part of which vested immediately and part of which will vest over time.

How many RBB common shares does Morris David Richard hold after these transactions?

After the May 21, 2026 transactions, he directly holds 45,368 shares of RBB common stock. This increase reflects the conversion of 1,946 restricted stock units into common shares at an exercise price of $0.00, as disclosed in the non-derivative transaction table.

What are the key details of the new restricted stock unit grant reported for RBB?

On May 21, 2026, he was granted 2,646 restricted stock units linked one-for-one to RBB common stock. According to the footnotes, 1,946 vested immediately, while 700 will vest on the one-year anniversary of the grant date, subject to continued service conditions.

Are there additional RBB restricted stock units that vest in future years for Morris David Richard?

Yes. He holds restricted stock units covering 3,164 underlying common shares that vest on February 21, 2027, and units covering 2,225 underlying common shares that vest on March 20, 2027, providing a scheduled stream of future share deliveries if vesting conditions are satisfied.

Does this RBB Form 4 show any open-market buying or selling by the director?

No open-market purchases or sales are reported. The filing shows an exercise of restricted stock units into 1,946 shares and a grant of 2,646 new RSUs, with transactionSummary indicating zero buyShares and zero sellShares, meaning no market trades occurred in this report.