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Interest Rate Risk Analysis 19.00% 16.50% 14.00% % Change in Net Interest Income¹ -100bps Shock +100bps Shock +200bps Shock 11.50% 9.00% 6.50% 4.00% 1.50% (1.00%) (3.50%) (Dollars in thousands) Net Interest Income September 30, 2017 December 31, 2016 December 31, 2015 December 31, 2014 Scenario $ Change % Change $ Change % Change $ Change % Change $ Change % Change -100bps Shock ($1,947) (3.44%) ($650) (1.30%) ($362) (1.00%) $736 2.20% +100bps Shock $4,436 7.84% $3,315 6.61% $2,927 8.10% $1,664 5.00% +200bps Shock $9,317 16.47% $7,813 15.58% $6,348 17.60% $5,024 15.00% (1) Assumes September 30, 2017 reported financial information RBB BANCORP 皇佳商業金控 25

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