Exhibit 12.1

Calculation of Ratio of Earnings to Fixed Charges and Preferred Stock Dividends

	Three Months Ended				For the Year Ended December 31,
	March 31, 2018		March 31, 2017		2017		2016		2015		2014		2013		2012
	(Dollars in thousands)
Including Interest on Deposits:
Earnings:
Net income	$	4,054	$	2,632	$	10,425	$	10,694	$	10,974	$	8,210	$	7,012	$	7,634
Income tax expense		1,374		1,626		7,791		6,483		6,519		4,684		4,140		4,601
Fixed charges — excluding preferred stock dividends		4,431		2,944		14,202		10,038		7,547		7,565		8,541		9,686
Total earnings before income taxes and fixed charges	$	9,859	$	7,202	$	32,418	$	27,215	$	25,040	$	20,459	$	19,693	$	21,921
Fixed charges:
Interest expense (including deposits)	$	4,423	$	2,938	$	14,167	$	10,014	$	7,520	$	7,537	$	8,513	$	9,663
Estimate of interest with in facilities rental (1)		8		6		35		24		27		28		28		23
Total fixed charges		4,431		2,944		14,202		10,038		7,547		7,565		8,541		9,686
Preferred stock dividends (2)		124		126		543		526		746		723		677		720
Total fixed charges and preferred stock dividends	$	4,555	$	3,070	$	14,745	$	10,564	$	8,293	$	8,288	$	9,218	$	10,406
Ratio of earnings to fixed charges		2.23		2.45		2.28		2.71		3.32		2.70		2.31		2.26
Ratio of earnings to fixed charges and preferred stock		2.16		2.35		2.20		2.58		3.02		2.47		2.14		2.11
Excluding Interest on Deposits:
Earnings:
Net income	$	4,054	$	2,632	$	10,425	$	10,694	$	10,974	$	8,210	$	7,012	$	7,634
Income tax expense		1,374		1,626		7,791		6,483		6,519		4,684		4,140		4,601
Fixed charges — excluding preferred stock dividends		635		507		2,387		1,843		1,309		1,411		1,858		1,796
Total earnings before income taxes and fixed charges	$	6,063	$	4,765	$	20,603	$	19,020	$	18,802	$	14,305	$	13,010	$	14,031
Fixed charges:
Interest expense (excluding deposits)	$	627	$	501	$	2,352	$	1,819	$	1,282	$	1,383	$	1,830	$	1,773
Estimate of interest with in facilities rental (1)		8		6		35		24		27		28		28		23
Total fixed charges		635		507		2,387		1,843		1,309		1,411		1,858		1,796
Preferred stock dividends (2)		124		126		543		526		746		723		677		720
Total fixed charges and preferred stock dividends	$	759	$	633	$	2,930	$	2,369	$	2,055	$	2,134	$	2,535	$	2,516
Ratio of earnings to fixed charges		9.55		9.40		8.63		10.32		14.36		10.14		7.00		7.81
Ratio of earnings to fixed charges and preferred stock		7.99		7.53		7.03		8.03		9.15		6.70		5.13		5.58

(1) The portion of rents shown as representative of the interest factor is one-third of the total net operating lease expense

(2) The preferred stock dividend amounts have been grossed up to compute the pre-tax income equivalent assuming an estimated 35% tax rate (for years 2017 and earlier) and 22% tax rate for 2018