RBB Bancorp — Director's Dealing 2025

May 22, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: RBB Bancorp (RBB)
CIK: 0001499422
Period of Report: 2025-05-21

Reporting Person: Kao James (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-21	Common Stock, No Par Value	M	4542	—	Acquired	564062	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-05-21	Restricted Stock Units	$0	M	4542	Disposed		Restricted Stock Units (5242)	Direct

Footnotes

F1: There will be no expiration date once restricted stock units vest.

F2: These restricted stock units granted on 5/21/2025 vest in two installments: 4,542 immediately vested on date of grant and 700 vest in one year from the date of grant