Exhibit 12.1

Computation of Ratio of Earnings to Fixed Charges

	Nine months ended				For the Year Ended December 31,
	9/30/2018		9/30/2017		2017		2016		2015		2014		2013
Including Interest on    Deposits:
Earnings:
Net income	$	26,614	$	20,640	$	25,528	$	19,079	$	12,973	$	10,428	$	7,004
Income tax expense		5,913		13,789		21,269		13,489		8,996		7,137		5,310
Fixed charges		14,045		10,350		13,938		11,708		6,936		4,522		3,367
Total earnings before    income taxes    and fixed charges	$	46,572	$	44,779	$	60,735	$	44,276	$	28,905	$	22,087	$	15,681
Fixed charges:
Deposit interest expense	$	10,295	$	7,601	$	10,272	$	8,944	$	6,935	$	4,517	$	3,362
Borrowed funds interest    expense		3,750		2,749		3,665		2,763		1		6		6
Total fixed charges	$	14,045	$	10,350	$	13,938	$	11,708	$	6,936	$	4,522	$	3,367
Ratio of earnings to fixed    charges		3.32		4.33		4.36		3.78		4.17		4.88		4.66
Excluding Interest on    Deposits:
Earnings:
Net income	$	26,614	$	20,640	$	25,528	$	19,079	$	12,973	$	10,428	$	7,004
Income tax expense		5,913		13,789		21,269		13,489		8,996		7,137		5,310
Fixed charges		3,750		2,749		3,665		2,763		1		6		6
Total earnings before    income taxes    and fixed charges	$	36,277	$	37,178	$	50,462	$	35,331	$	21,970	$	17,571	$	12,320
Fixed charges:
Interest expense (excluding    deposits)	$	3,750	$	2,749	$	3,665	$	2,763	$	1	$	6	$	6
Total fixed charges	$	3,750	$	2,749	$	3,665	$	2,763	$	1	$	6	$	6
Ratio of earnings to fixed    charges		9.67		13.52		13.77		12.79		18,810.08		3,129.23		2,166.29