RBB Bancorp — Director's Dealing 2026

Feb 24, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: RBB Bancorp (RBB)
CIK: 0001499422
Period of Report: 2026-02-20

Reporting Person: LEE JOHNNY C (Director, President/CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-20	Common Stock, No Par Value	M	1098	$22.20	Acquired	10573	Direct
2026-02-20	Common Stock, No Par Value	F	453	$22.20	Disposed	10120	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-20	Restricted Stock Units	$22.20	M	1098	Disposed		Common Stock (2196)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Restricted Stock Units	$0.0000		Common Stock (11000)	5500	Direct
Restricted Stock Units	$0.0000		Common Stock (5282)	5282	Direct
Performance Stock Units	$0.0000		Common Stock (12332)	12332	Direct
Restricted Stock Units	$0.0000		Common Stock (13068)	13068	Direct
Performance Stock Units	$0.0000		Common Stock (19602)	19602	Direct

Footnotes

F1: These restricted stock units vest in three equal annual installments beginning one year after the 07/20/2023 date of grant.

F2: There will be no expiration date once restricted stock units vest.

F3: These restricted stock units vest in three equal annual installments beginning one year after the 02/21/2024 date of grant.

F4: These restricted stock units vest in three equal annual installments beginning one year after the 03/20/2024 date of grant.

F5: These performance stock units ("PSUs") will vest conditionally on the achievement of certain performance goals and an employment condition. The reported PSUs will vest at the expiration of a three-year period beginning on 03/20/2024 subject to the Reporting Person's satisfaction of the employment condition.

F6: These restricted stock units vest in three equal annual installments beginning one year after the 05/08/2025 date of grant.

F7: Performance Stock Units ("PSUs") to vest conditionally on the achievement of certain performance goals and an employment condition. The PSUs are awarded at a target level and have the opportunity to vest at 150% of such target level; The reported PSUs represent the maximum award that may be achieved and ultimately vest. The reported PSUs will vest at the expiration of a three-year period beginning on 05/08/2025 subject to the Reporting Person's satisfaction of the employment condition.

F8: On May 12, 2025 due to an administrative error, the Reporting Person filed a Form 4 which inadvertently omitted information from the transactional columns in Table II and overstated the amount of RSUs and PSUs granted to the Reporting Person on May 8, 2025. The Form 4 has also been amended to clarify that grants of RSUs and PSUs will be settled in common stock.