RBB director exercises 2,546 RSUs into common stock

RBB Bancorp director Scott Polakoff increased his equity stake through stock-based compensation activity.

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Form Type

Rhea-AI Filing Summary

RBB Bancorp director Scott Polakoff increased his equity stake through stock-based compensation activity. On May 21, 2026, he exercised derivative awards covering 2,546 restricted stock units, converting them into the same number of shares of common stock at a stated price of $0.00 per share.

Following these exercises, his direct holdings of common stock rose to 15,190 shares. On the same date, he also received a new grant of 2,546 restricted stock units, of which 1,846 vested immediately and 700 are scheduled to vest on the one-year anniversary of the grant date.

Insider Trade Summary

2,546 shares exercised/converted

Exercise 5 txns

Insider Polakoff Scott

Role Director

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	700	$0.00	$0.00
Grant/Award	Restricted Stock Units	2,546	$0.00	$0.00
Exercise	Restricted Stock Units	1,846	$0.00	$0.00
Exercise	Common Stock, No Par Value	700	$0.00	$0.00
Exercise	Common Stock, No Par Value	1,846	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 700 contracts (Direct); Common Stock, No Par Value — 15,190 shares (Direct)

Footnotes (3)

F1. Restricted stock units convert into common stock on a one-for-one basis.
F2. On May 21, 2025, the reporting person was granted 4,332 restricted stock units: 3,632 immediately vested and 700 vested on the one year anniversary of the grant date.
F3. On May 21, 2026, the reporting person was granted 2,546 restricted stock units: 1,846 vested immediately and 700 will vest on the one year anniversary of the grant date.

Key Figures

RSUs exercised: 2,546 units New RSU grant: 2,546 units Immediately vested RSUs (2026 grant): 1,846 units +3 more

6 metrics

RSUs exercised 2,546 units Derivative exercises on May 21, 2026

New RSU grant 2,546 units Grant on May 21, 2026

Immediately vested RSUs (2026 grant) 1,846 units Portion of May 21, 2026 grant vesting immediately

RSUs vesting in one year (2026 grant) 700 units Scheduled to vest one year after May 21, 2026

Common shares after transactions 15,190 shares Direct holdings after May 21, 2026 exercises

Exercise price per share $0.00/share Stated price on common stock from RSU conversion

Key Terms

Restricted stock units, derivative security, Grant, award, or other acquisition, one-for-one basis

4 terms

Restricted stock units financial

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

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.

Grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

one-for-one basis financial

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

FAQ

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

What did RBB (RBB) director Scott Polakoff report in this Form 4?

Scott Polakoff reported equity compensation activity, including exercising 2,546 restricted stock units into common shares and receiving a new grant of 2,546 restricted stock units, with a portion vesting immediately and the rest scheduled to vest in one year.

How many RBB (RBB) common shares does Scott Polakoff hold after these transactions?

After these transactions, Scott Polakoff directly holds 15,190 shares of RBB Bancorp common stock. This figure reflects his updated ownership position following the conversion of restricted stock units into common shares on May 21, 2026.

What restricted stock unit grant did Scott Polakoff receive from RBB (RBB)?

On May 21, 2026, Scott Polakoff was granted 2,546 restricted stock units tied to RBB Bancorp common stock. According to the disclosure, 1,846 units vested immediately, while 700 units are scheduled to vest on the one-year anniversary of the grant date.

How do the restricted stock units for RBB (RBB) convert into common stock?

The filing states that restricted stock units convert into RBB Bancorp common stock on a one-for-one basis. This means each vested restricted stock unit is settled by issuing one share of common stock to the reporting person upon conversion.

Were there any open-market stock purchases or sales by Scott Polakoff in this RBB (RBB) filing?

The Form 4 shows only equity compensation-related activity, including exercises of derivative securities and a grant of restricted stock units. It does not report any open-market purchases or sales of RBB Bancorp common stock by Scott Polakoff.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 05/26/2026 - 08:09 PM EDT

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^*

Polakoff Scott

(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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock, No Par Value	05/21/2026		M		700	A	$0	13,344	D
Common Stock, No Par Value	05/21/2026		M		1,846	A	$0	15,190	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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		2,546		⁽³⁾	⁽³⁾	Common Stock	2,546	$0	2,546	D
Restricted Stock Units	⁽¹⁾	05/21/2026		M			1,846	⁽³⁾	⁽³⁾	Common Stock	1,846	$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 reporting person was granted 4,332 restricted stock units: 3,632 immediately vested and 700 vested on the one year anniversary of the grant date.

3. On May 21, 2026, the reporting person was granted 2,546 restricted stock units: 1,846 vested immediately and 700 will vest on the one year anniversary of the grant date.

	/s/ Scott Polakoff	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)

Source: View Original Filing on SEC EDGAR