X0306 4 2019-02-01 0 0001499422 RBB Bancorp RBB 0001711680 Chang Peter M 660 S. FIGUEROA STREET SUITE 1888 LOS ANGELES CA 90017 1 0 0 0 Common Stock, No Par Value 2019-02-01 2019-02-01 4 M 0 10763 9.2915 A 358941 D Common Stock, No Par Value 2019-02-01 2019-02-01 4 M 0 21526 11.1498 A 380467 D Common Stock, No Par Value 2019-02-01 2019-02-01 4 M 0 10250 13.21 A 390717 D Common Stock, No Par Value 2019-02-01 2019-02-01 4 M 0 10000 17.08 A 400717 D Common Stock, No Par Value 2019-02-01 2019-02-01 4 M 0 6667 18.25 A 407384 D Stock Options 2019-02-01 2019-02-01 4 M 0 10763 9.2915 D 51776 D Stock Options 2019-02-01 2019-02-01 4 M 0 21526 11.1498 D 30250 D Stock Options 2019-02-01 2019-02-01 4 M 0 10250 13.21 D 20000 D Stock Options 2019-02-01 2019-02-01 4 M 0 10000 17.08 D 10000 D Stock Options 2019-02-01 2019-02-01 4 M 0 6667 18.25 D 3333 D Stock Options 3333 D Option (right to buy) 9.2915 2019-02-01 2019-02-01 4 M 0 10763 9.2915 D 2021-05-18 Common Stock 10763 0 D Option (right to buy) 11.1498 2019-02-01 2019-02-01 4 M 0 10763 11.1498 D 2022-05-16 Common Stock 10763 0 D Option (right to buy) 13.2098 2019-02-01 2019-02-01 4 M 0 10250 13.2098 D 2024-05-21 Common Stock 10250 0 D Option (right to buy) 17.08 2019-02-01 2019-02-01 4 M 0 10000 17.08 D 2025-05-20 Common Stock 10000 0 D Option (right to buy) 18.25 2019-02-01 2019-02-01 4 M 0 6667 18.25 D 2026-05-17 Common Stock 10000 3333 D Option (right to buy) 11.1498 2019-02-01 2019-02-01 4 M 0 10763 11.1498 D 2023-05-15 Common Stock 10763 0 D Option (right to buy) 9.2915 2018-11-18 Common Stock 0 0 D Option (right to buy) 9.2915 2019-01-02 Common Stock 0 0 D These options vest in three equal annual installments beginning one year after the 05/18/2011 date of grant. These options vest in three equal annual installments beginning one year after the 05/16/2012 date of grant. These options vest in three equal annual installments beginning one year after the 05/21/2014 date of grant. These options vest in three equal annual installments beginning one year after the 05/20/2015 date of grant. These options vest in three equal annual installments beginning one year after the 05/17/2016 date of grant. These options vest in three equal annual installments beginning one year after the 05/15/2013 date of grant. These options vest in three equal annual installments beginning one year after the 11/18/2008 date of grant. These options vest in three equal annual installments beginning one year after the 01/02/2009 date of grant. Peter Chang 2019-02-01