RBB Bancorp — Director's Dealing 2018

May 23, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: RBB Bancorp (RBB)
CIK: 0001499422
Period of Report: 2018-05-23

Reporting Person: Liu Vincent (EVP)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-05-02	Stock Options	S	7000	$27.41	Disposed	106371	Direct
2018-05-03	Stock Options	S	5288	$27.43	Disposed	101083	Direct
2018-05-04	Stock Options	S	2000	$27.70	Disposed	99083	Direct
2018-05-09	Stock Options	M	6199	$9.2915	Disposed	92884	Direct
2018-05-10	Stock Options	S	2000	$28.00	Disposed	90884	Direct
2018-05-10	Stock Options	S	2000	$27.90	Disposed	88884	Direct
2018-05-10	Stock Options	S	2000	$27.80	Disposed	86884	Direct
2018-05-10	Stock Options	S	2000	$27.70	Disposed	84884	Direct
2018-05-11	Stock Options	S	3906	$28.15	Disposed	80978	Direct
2018-05-22	Stock Options	S	2000	$28.90	Disposed	78978	Direct
2018-05-22	Stock Options	S	3000	$29.22	Disposed	75978	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, No Par Value	85757	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Option (right to buy)	$9.2915	2018-11-04	Common Stock (0)	0	Direct
Option (right to buy)	$9.2915	2018-11-18	Common Stock (0)	0	Direct
Option (right to buy)	$11.1498	2023-01-01	Common Stock (0)	107172	Direct

Footnotes

F1: These options vest in three equal annual installments beginning one year after the 11/04/2008 date of grant.

F2: These options vest in three equal annual installments beginning one year after the 11/18/2008 date of grant.

F3: These options vest in three equal annual installments beginning one year after the 01/01/2013 date of grant.