Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of RegulationsS-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, anon-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Act). Yes ☐ No ☒

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date:


Item			Page				Page

1.		Financial Statements		3		Financial Statements		3
		Consolidated Balance Sheets – Unaudited		4		Consolidated Balance Sheets – Unaudited		4
		Consolidated Statements of Earnings – Unaudited		5		Consolidated Statements of Earnings – Unaudited		5
		Consolidated Statements of Comprehensive Earnings – Unaudited		6		Consolidated Statements of Comprehensive Earnings (Loss) – Unaudited		6
		Consolidated Statements of Shareholders’ Equity – Unaudited		7		Consolidated Statements of Shareholders’ Equity – Unaudited		7
		Consolidated Statements of Cash Flows – Unaudited		8		Consolidated Statements of Cash Flows – Unaudited		8
		Notes to Consolidated Financial Statements – Unaudited		9		Notes to Consolidated Financial Statements – Unaudited		9

2.		Management’s Discussion and Analysis of Financial Condition and Results of Operations		33		Management’s Discussion and Analysis of Financial Condition and Results of Operations		36

3.		Quantitative and Qualitative Disclosures About Market Risk		52		Quantitative and Qualitative Disclosures About Market Risk		56

4.		Controls and Procedures		52		Controls and Procedures		56

PART II	PART II				PART II

OTHER INFORMATION	OTHER INFORMATION				OTHER INFORMATION

1.		Legal Proceedings		53		Legal Proceedings		57

1A.		Risk Factors		53		Risk Factors		57

2.		Unregistered Sales of Equity Securities and Use of Proceeds		53		Unregistered Sales of Equity Securities and Use of Proceeds		57

3.		Defaults Upon Senior Securities		53		Defaults Upon Senior Securities		57

4.		Mine Safety Disclosures		53		Mine Safety Disclosures		57

5.		Other Information		53		Other Information		57

6.		Exhibits		54		Exhibits		58

		Signatures		55		Signatures		59

The consolidated balance sheets of First Financial Bankshares, Inc. (the “Company” or “we”) at ~~September~~June 30, ~~2017~~2018 and ~~2016~~2017 and December 31, ~~2016,~~2017, and the consolidated statements of earnings and comprehensive earnings for the three and ~~nine~~six months ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and the consolidated statements of shareholders’ equity and cash flows for the ~~nine~~six months ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, follow on pages 4 through 8.


										June 30,						December 31,
	Septembere 30,						December 31,			2018			2017			2017
	2017			2016			2016			(Unaudited)
ASSETS	(Unaudited)
CASH AND DUE FROM BANKS	$	177,615		$	166,981		$	204,782		$	178,217		$	163,435		$	209,583
FEDERAL FUNDS SOLD		—			3,400			3,130			8,450			3,740			—
INTEREST-BEARING DEPOSITS IN BANKS		166,820			117,334			48,574			99,499			53,336			162,764

Total cash and cash equivalents		344,435			287,715			256,486			286,166			220,511			372,347

INTEREST-BEARING TIME DEPOSITS IN BANKS		1,458			1,707			1,707			1,458			1,458			1,458

SECURITIESAVAILABLE-FOR-SALE, at fair value		2,885,483			2,729,030			2,860,837			3,197,567			2,964,513			3,087,473

SECURITIESHELD-TO-MATURITY (fair value of $133 and $124 at September 30, 2016, and December 31, 2016, respectively)		—			129			121
SECURITIESHELD-TO-MATURITY (fair value of
$107 at June 30, 2017)
										—			105			—
LOANS:
Held for investment		3,472,227			3,337,793			3,357,307			3,831,480			3,439,352			3,485,569
Less - allowance for loan losses		(47,922	)		(45,298	)		(45,779	)		(49,951	)		(47,410	)		(48,156	)

Net loans held for investment		3,424,305			3,292,495			3,311,528			3,781,529			3,391,942			3,437,413
Held for sale		19,119			31,591			26,898			24,289			18,327			15,130

Net loans		3,443,424			3,324,086			3,338,426			3,805,818			3,410,269			3,452,543

BANK PREMISES AND EQUIPMENT, net		125,668			122,725			122,685			130,366			123,620			124,026
INTANGIBLE ASSETS		141,355			143,729			143,603			175,185			143,120			141,143
OTHER ASSETS		67,341			77,615			86,066			88,910			83,796			75,725


Total assets	$	7,009,164		$	6,686,736		$	6,809,931		$	7,685,470		$	6,947,392		$	7,254,715


LIABILITIES AND SHAREHOLDERS’ EQUITY

NONINTEREST-BEARING DEPOSITS	$	1,949,174		$	1,702,993		$	1,717,722		$	2,105,953		$	1,856,439		$	2,041,650
INTEREST-BEARING DEPOSITS		3,748,286			3,532,471			3,760,817			4,104,654			3,770,170			3,921,311

Total deposits		5,697,460			5,235,464			5,478,539			6,210,607			5,626,609			5,962,961

DIVIDENDS PAYABLE		12,580			11,891			11,897			14,211			12,572			12,589
BORROWINGS		351,435			513,759			445,770			456,935			379,324			331,000
OTHER LIABILITIES		41,133			57,678			35,840			18,089			41,445			25,397


Total liabilities		6,102,608			5,818,792			5,972,046			6,699,842			6,059,950			6,331,947


COMMITMENTS AND CONTINGENCIES

SHAREHOLDERS’ EQUITY:
Common stock - ($0.01 par value, authorized 120,000,000 shares; 66,223,957, 66,063,285, and 66,094,695 shares issued at September 30, 2017 and 2016, and December 31, 2016, respectively)		662			661			661
Common stock - ($0.01 par value, authorized 120,000,000 shares; 67,669,658, 66,170,312 and 66,260,444 shares issued at June 30, 2018 and 2017 and December 31, 2017, respectively)											677			662			663
Capital surplus		376,286			371,170			372,245			439,731			374,391			378,062
Retained earnings		493,706			431,765			446,534			556,615			476,912			517,257
Treasury stock (shares at cost: 498,459, 510,955, and 507,409 at September 30, 2017 and 2016, and December 31, 2016, respectively)		(7,028	)		(6,566	)		(6,671	)
Treasury stock (shares at cost: 491,170, 501,198, and 495,964 at June 30, 2018 and 2017 and December 31, 2017, respectively)											(7,419	)		(6,948	)		(7,148	)
Deferred compensation		7,028			6,566			6,671			7,419			6,948			7,148
Accumulated other comprehensive earnings		35,902			64,348			18,445

Accumulated other comprehensive earnings (loss)											(11,395	)		35,477			26,786

Total shareholders’ equity		906,556			867,944			837,885			985,628			887,442			922,768


Total liabilities and shareholders’ equity	$	7,009,164		$	6,686,736		$	6,809,931		$	7,685,470		$	6,947,392		$	7,254,715


	Three Months Ended September 30,						Nine Months Ended September 30,					Three Months Ended June 30,					Six Months Ended June 30,
	2017			2016			2017			2016		2018		2017			2018			2017
INTEREST INCOME:
Interest and fees on loans	$	42,749		$	40,411		$	123,643		$	120,700	$	49,105	$	41,311		$	95,851		$	80,894
Interest on investment securities:
Taxable		8,074			6,775			23,848			21,167		12,719		8,343			24,073			15,774
Exempt from federal income tax		11,091			10,808			33,991			32,220		9,983		11,408			20,324			22,900
Interest on federal funds sold and interest-bearing deposits in banks		640			99			1,037			222		271		120			912			397

Total interest income		62,554			58,093			182,519			174,309		72,078		61,182			141,160			119,965

INTEREST EXPENSE:
Interest on deposits		2,228			1,112			5,748			3,197		4,005		1,930			7,524			3,520
Other		638			254			978			811		462		167			576			340

Total interest expense		2,866			1,366			6,726			4,008		4,467		2,097			8,100			3,860

Net interest income		59,688			56,727			175,793			170,301		67,611		59,085			133,060			116,105

PROVISION FOR LOAN LOSSES		1,415			3,833			5,090			8,219		1,105		1,725			2,415			3,675

Net interest income after provision for loan losses		58,273			52,894			170,703			162,082		66,506		57,360			130,645			112,430


NONINTEREST INCOME:
Trust fees		6,040			5,066			17,804			14,446		7,070		5,747			13,975			11,764
Service charges on deposit accounts		5,083			4,796			14,517			13,614		5,375		4,883			10,259			9,433
ATM, interchange and credit card fees		6,340			6,000			19,102			17,521		7,041		6,598			14,037			12,762
Real estate mortgage operations		3,891			4,697			11,496			11,849		3,951		4,188			6,884			7,605
Net gain on sale ofavailable-for-sale securities (includes $1,075 and $239 for the three months ended September 30, 2017 and 2016, respectively, and $1,825 and $1,153 for the nine months ended September 30, 2017 and 2016, respectively, related to accumulated other comprehensive earnings reclassifications)		1,075			239			1,825			1,153
Net gain on sale ofavailable-for-sale securities (includes $67 and $747 for the three months ended June 30, 2018 and 2017, respectively, and $1,288 and $750 for the six months ended June 30, 2018 and 2017, respectively, related to accumulated other comprehensive earnings reclassifications)													67		747			1,288			750
Net gain (loss) on sale of foreclosed assets		(11	)		(10	)		(42	)		343		19		(72	)		118			(31	)
Net gain (loss) on sale of assets		(15	)		(168	)		(211	)		271		—		(200	)		(91	)		(196	)
Interest on loan recoveries		405			709			896			1,970		289		337			408			491
Other		1,452			823			3,328			2,243		1,676		942			3,034			1,877

Total noninterest income		24,260			22,152			68,715			63,410		25,488		23,170			49,912			44,455

NONINTEREST EXPENSE:
Salaries and employee benefits		24,143			22,931			70,867			67,668		26,862		23,465			53,065			46,724
Net occupancy expense		2,711			2,672			8,081			7,886		2,806		2,771			5,689			5,370
Equipment expense		3,294			3,420			10,397			10,186		3,440		3,665			6,957			7,102
FDIC insurance premiums		561			513			1,657			2,155		632		550			1,199			1,097
ATM, interchange and credit card expenses		2,001			1,859			5,517			5,352		2,205		1,803			4,348			3,516
Professional and service fees		2,036			1,883			5,878			5,099		2,026		2,025			4,439			3,842
Printing, stationery and supplies		449			536			1,423			1,504		612		536			1,098			974
Operational and other losses		1,081			533			2,639			1,452		305		574			871			1,559
Software amortization and expense													479		995			1,003			1,495
Amortization of intangible assets		143			172			477			570		384		165			771			333
Other		7,545			7,484			22,955			21,968		7,393		7,226			15,503			13,914

Total noninterest expense		43,964			42,003			129,891			123,840		47,144		43,775			94,943			85,926


EARNINGS BEFORE INCOME TAXES		38,569			33,043			109,527			101,652		44,850		36,755			85,614			70,959
INCOME TAX EXPENSE (includes $376 and $84 for the three months ended September 30, 2017 and 2016, respectively, and $639 and $404 for the nine months ended September 30, 2017 and 2016, respectively, related to income tax expense from reclassification items)		9,195			7,440			25,300			23,544

INCOME TAX EXPENSE (includes $14 and $261 for the three months ended June 30, 2018 and 2017, respectively, and $270 and $263 for the six months ended June 30, 2018 and 2017, respectively, related to income tax expense from reclassification items)													7,217		8,500			13,462			16,105

NET EARNINGS	$	29,374		$	25,603		$	84,227		$	78,108	$	37,633	$	28,255		$	72,152		$	54,854


EARNINGS PER SHARE, BASIC	$	0.44		$	0.39		$	1.27		$	1.18	$	0.56	$	0.43		$	1.07		$	0.83


EARNINGS PER SHARE, ASSUMING DILUTION	$	0.44		$	0.39		$	1.27		$	1.18	$	0.55	$	0.43		$	1.06		$	0.83


DIVIDENDS PER SHARE	$	0.19		$	0.18		$	0.56		$	0.52	$	0.21	$	0.19		$	0.40		$	0.37


	Three Months Ended September 30,						Nine Months Ended September 30,						Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016			2018			2017			2018			2017
NET EARNINGS	$	29,374		$	25,603		$	84,227		$	78,108		$	37,633		$	28,255		$	72,152		$	54,854

OTHER ITEMS OF COMPREHENSIVE EARNINGS (LOSS):
Change in unrealized gain on investment securitiesavailable-for-sale, before income taxes		1,729			(18,984	)		28,682			27,235

Change in unrealized gain (loss) on investment securitiesavailable-for-sale, before income taxes														(11,600	)		17,725			(54,306	)		26,953
Reclassification adjustment for realized gains on investment securities included in net earnings, before income tax		(1,075	)		(239	)		(1,825	)		(1,153	)		(67	)		(747	)		(1,288	)		(750	)


Total other items of comprehensive earnings		654			(19,223	)		26,857			26,082

Total other items of comprehensive earnings (loss)														(11,667	)		16,978			(55,594	)		26,203
Income tax benefit (expense) related to other items of comprehensive earnings		(229	)		6,728			(9,400	)		(9,129	)		2,450			(5,842	)		11,675			(9,171	)

Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act to retained earnings														—			—			5,759			—

COMPREHENSIVE EARNINGS	$	29,799		$	13,108		$	101,684		$	95,061		$	28,416		$	39,391		$	33,992		$	71,886


																		Accumulated																							Accumulated
																		Other		Total																					Other				Total
	Common Stock				Capital		Retained			Treasury Stock						Deferred		Comprehensive		Shareholders’
	Shares		Amount		Surplus		Earnings			Shares			Amounts			Compensation		Earnings		Equity
Balances at December 31, 2015		65,990,234	$	660	$	368,925	$	388,006			(520,651	)	$	(6,296	)	$	6,296	$	47,395	$	804,986
Net earnings (unaudited)		—		—		—		78,108			—			—			—		—		78,108
Stock option exercises (unaudited)		66,866		1		988		—			—			—			—		—		989
Restricted stock grant (unaudited)		6,185		—		250		—			—			—			—		—		250
Cash dividends declared, $0.52 per share (unaudited)		—		—		—		(34,349	)		—			—			—		—		(34,349	)
Change in unrealized gain in investment securitiesavailable-for-sale, net of related income taxes (unaudited)		—		—		—		—			—			—			—		16,953		16,953
Additional tax benefit related to directors’ deferred compensation plan (unaudited)		—		—		345		—			—			—			—		—		345
Shares purchased in connection with directors’ deferred compensation plan, net (unaudited)		—		—		—		—			9,696			(270	)		270		—		—
Stock option expense (unaudited)		—		—		662		—			—			—			—		—		662

Balances at September 30, 2016 (unaudited)		66,063,285	$	661	$	371,170	$	431,765			(510,955	)	$	(6,566	)	$	6,566	$	64,348	$	867,944
																							Common Stock				Capital		Retained			Treasury Stock						Deferred Compensation			Comprehensive Earnings				Shareholders’
																							Shares		Amount		Surplus		Earnings			Shares			Amounts			Deferred Compensation			Comprehensive Earnings			Equity
Balances at December 31, 2016		66,094,695	$	661	$	372,245	$	446,534			(507,409	)	$	(6,671	)	$	6,671	$	18,445	$	837,885			66,094,695	$	661	$	372,245	$	446,534			(507,409	)	$	(6,671	)		$	6,671		$	18,445			$	837,885
Net earnings (unaudited)		—		—		—		84,227			—			—			—		—		84,227			—		—		—		54,854			—			—			—			—				54,854
Stock option exercises (unaudited)		114,612		1		2,259		—			—			—			—		—		2,260			60,967		1		1,114		—			—			—			—			—				1,115
Restricted stock grant (unaudited)		14,650		—		600		—			—			—			—		—		600			14,650		—		600		—			—			—			—			—				600
Cash dividends declared, $.056 per share (unaudited)		—		—		—		(37,055	)		—			—			—		—		(37,055	)
Cash dividends declared, $0.37 per share (unaudited)																								—		—		—		(24,476	)		—			—			—			—				(24,476	)
Change in unrealized gain in investment securitiesavailable-for-sale, net of related income taxes (unaudited)		—		—		—		—			—			—			—		17,457		17,457			—		—		—		—			—			—			—			17,032				17,032
Shares purchased in connection with directors’ deferred compensation plan, net (unaudited)		—		—		—		—			8,950			(357	)		357		—		—
Shares purchased (redeemed) in connection with directors’ deferred compensation plan, net (unaudited)																								—		—		—		—			6,211			(277	)		277			—				—
Stock option expense (unaudited)		—		—		1,182		—			—			—			—		—		1,182			—		—		432		—			—			—			—			—				432

Balances at September 30, 2017 (unaudited)		66,223,957	$	662	$	376,286	$	493,706			(498,459	)	$	(7,028	)	$	7,028	$	35,902	$	906,556
Balances at June 30, 2017 (unaudited)																								66,170,312	$	662	$	374,391	$	476,912			(501,198	)	$	(6,948	)	$	6,948		$	35,477			$	887,442

Balances at December 31, 2017																								66,260,444	$	663	$	378,062	$	517,257			(495,964	)	$	(7,148	)	$	7,148		$	26,786			$	922,768
Net earnings (unaudited)																								—		—		—		72,152			—			—			—			—				72,152
Stock option exercises (unaudited)																								109,133		1		2,318		—			—			—			—			—				2,319
Restricted stock grant (unaudited)																								10,710		—		523		—			—			—			—			—				523
Cash dividends declared, $0.40 per share (unaudited)																								—		—		—		(27,056	)		—			—			—			—				(27,056	)
Stock issued in acquisition of Commercial Bancshares, Inc.																								1,289,371		13		58,074		—			—			—			—			—				58,087
Change in unrealized gain (loss) in investment securitiesavailable-for-sale, net of related income taxes (unaudited)																								—		—		—		—			—			—						(43,919	)			(43,919	)
Shares purchased (redeemed) in connection with directors’ deferred compensation plan, net (unaudited)																								—		—		—		—			4,794			(271	)		271			—				—
Stock option expense (unaudited)																								—		—		754		—			—			—			—			—				754
Reclassification of certain income tax effects related to the change in the U.S. statutory federal income tax rate under the Tax Cuts and Jobs Act to retained earnings (umaudited)																								—		—		—		(5,759	)		—			—			—			5,759				—
Reclassification of unrealized gain in equity securities at December 31, 2017 from accumulated other comprehensive earnings to retained earnings (unaudited)																								—		—		—		21			—			—			—			(21	)			—

Balances at June 30, 2018 (unaudited)																								67,669,658	$	677	$	439,731	$	556,615			(491,170	)	$	(7,419	)	$	7,419		$	(11,395	)		$	985,628


	Nine Months Ended September 30,						Six Months Ended June 30,
	2017			2016			2018			2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$	84,227		$	78,108		$	72,152		$	54,854
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization		9,447			8,627			6,433			6,209
Provision for loan losses		5,090			8,219			2,415			3,675
Securities premium amortization (discount accretion), net		23,009			21,275			14,109			15,592
Gain on sale of assets, net		(1,572	)		(1,767	)		(1,245	)		(523	)
Deferred federal income tax benefit		1,290			825			(908	)		(614	)
Change in loansheld-for-sale		7,779			1,952			(9,009	)		8,572
Change in other assets		18,703			10,059			(1,192	)		4,210
Change in other liabilities		7,172			530			6,218			5,533

Total adjustments		70,918			49,720			16,821			42,654

Net cash provided by operating activities		155,145			127,828			88,973			97,508


CASH FLOWS FROM INVESTING ACTIVITIES:
Cash received in acquisition of Commercial Bancshares, Inc.								18,653			—
Net decrease in interest-bearing time deposits in banks		249			1,788			—			249
Activity inavailable-for-sale securities:
Sales		120,576			20,792			149,125			36,971
Maturities		4,299,781			2,830,522			3,208,139			604,582
Purchases		(4,450,719	)		(2,835,964	)		(3,471,387	)		(741,922	)
Activity inheld-to-maturity securities - maturities		124			148			—			17
Net increase in loans		(119,911	)		(27,446	)		(80,480	)		(85,212	)
Purchases of bank premises and equipment and other assets		(12,626	)		(17,151	)		(8,544	)		(7,705	)
Proceeds from sale of other assets		4,857			2,960
Proceeds from sale of bank premises and equipment and other assets								776			599

Net cash used in investing activities		(157,669	)		(24,351	)		(183,718	)		(192,421	)


CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in noninterest-bearing deposits		231,452			(42,959	)		(97,737	)		138,717
Net increase (decrease) in interest-bearing deposits		(12,531	)		88,254
Net decrease in borrowings		(94,335	)		(101,916	)
Net increase in interest-bearing deposits								3,481			9,353
Net increase (decrease) in borrowings								125,935			(66,446	)
Common stock transactions:
Proceeds from stock issuances		2,260			989			2,319			1,115
Dividends paid		(36,373	)		(33,016	)		(25,434	)		(23,801	)

Net cash provided by (used in) financing activities		90,473			(88,648	)		8,564			58,938


NET DECREASE IN CASH AND CASH EQUIVALENTS		87,949			14,829			(86,181	)		(35,975	)

CASH AND CASH EQUIVALENTS, beginning of period		256,486			272,886			372,347			256,486


CASH AND CASH EQUIVALENTS, end of period	$	344,435		$	287,715		$	286,166		$	220,511


SUPPLEMENTAL INFORMATION AND NONCASH TRANSACTIONS:
Interest paid	$	6,772		$	4,018		$	8,074		$	3,921
Federal income tax paid		21,896			21,631
Transfer of loans and bank premises to other real estate owned		2,044			1,905
Federal income taxes paid								12,762			13,348
Transfer of loans and bank premises to other real estate								126			1,916
Investment securities purchased but not settled		993			4,521			—			4,325
Restricted stock grant to officers and directors		600			250
Restricted stocks grant to directors and officers								523			600
Stock issued in acquisition of Commercial Bancshares, Inc.								58,087			—

The unaudited interim consolidated financial statements include the accounts of the Company, a Texas corporation and a financial holding company registered under the Bank Holding Company Act of 1956, as amended, or BHCA, and its wholly-owned subsidiaries: First Financial Bank, National Association, Abilene, Texas; First Technology Services, Inc.; First Financial Trust & Asset Management Company, National Association; First Financial Investments, Inc.; and First Financial Insurance Agency, Inc.

Through our subsidiary bank, we conduct a full-service commercial banking business. Our banking centers are located primarily in Central, North Central, Southeast and West Texas. As of ~~September~~June 30, ~~2017,~~2018, we had 6972 financial centers across Texas, with eleven locations in Abilene, three locations in ~~San Angelo and~~ Weatherford, two locations in Cleburne, Conroe, San Angelo, Stephenville and Granbury, and one location each in Acton, Albany, Aledo, Alvarado, Beaumont, Boyd, Bridgeport, Brock, Burleson, Cisco, Clyde, Cut and Shoot, Decatur, Eastland, El Campo, Fort Worth, Fulshear, Glen Rose, Grapevine, Hereford, Huntsville, Keller, Kingwood, Magnolia, Mauriceville, Merkel, Midlothian, Mineral Wells, Montgomery, Moran, New Waverly, Newton, Odessa, Orange, Palacios, Port Arthur, Ranger, Rising Star, Roby, Southlake, Sweetwater, Tomball, Trent, Trophy Club, Vidor, Waxahachie, Willis and Willow Park, all in Texas. Our trust subsidiary has seven locations which are located in Abilene, Fort Worth, Odessa, Beaumont, San Angelo, Stephenville and Sweetwater.

In the opinion of management, the unaudited interim consolidated financial statements reflect all adjustments necessary for a fair presentation of the Company’s financial position and unaudited results of operations and should be read in conjunction with the Company’s audited consolidated financial statements, and notes thereto in the Company’s Annual Report on Form10-K, for the year ended December 31, ~~2016.~~2017. All adjustments were of a normal recurring nature. However, the results of operations for the three and ~~nine~~six months ended ~~September~~June 30, ~~2017,~~2018, are not necessarily indicative of the results to be expected for the year ending December 31, ~~2017,~~2018, due to seasonality, changes in economic conditions and loan credit quality, interest rate fluctuations, regulatory and legislative changes and other factors. The preparation of financial statements in conformity with United States generally accepted accounting principles (“GAAP”) ~~require~~requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the financial statement date. Actual results could vary. Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been condensed or omitted under U.S. Securities and Exchange Commission (“SEC”) rules and regulations. The Company evaluated subsequent events for potential recognition and/or disclosure through the date the consolidated financial statements were issued.

Goodwill and other intangible assets are evaluated annually for impairment as of the end of the second quarter. No such impairment has been noted in connection with the current or any prior evaluations.

ASC 606, “Revenue from Contracts with Customers” established principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the entity’s contracts to provide goods or services to customers. The core principle requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied.

The majority of the Company’s revenue is derived from loan and investment income which are specifically excluded from the scope of this standard. Of the Company’s remaining sources of income, substantially all sources of revenue are recognized either by transaction (ATM, interchange, wire transfer, etc.) or when the Company charges a customer for a service that has already been rendered (monthly service charges, account fees, monthly trust management fees, etc.). Payment for such performance obligations are generally received at the time the performance obligations are satisfied. Othernon-interest income primarily includes items such as letter of credit fees, gains on the sale of loans held for sale and servicing fees, none of which are subject to the requirements of ASC 606. See note 13 for additional discussion related to the Company’s adoption of ASC 606.

On July 25, 2017, the Company’s Board of Directors authorized the repurchase of up to 2,000,000 common shares through September 30, 2020. ~~Previously, the Board had authorized the repurchase of up to 1,500,000 common shares through September 30, 2017.~~ The shares buyback plan authorizes management to repurchase the shares at such time as repurchases are considered beneficial to shareholders. Any repurchase of shares will be made through the open market, block trades or in privately negotiated transactions in accordance with applicable laws and regulations. Under the repurchase plan, there is no minimum number of shares that the Company is required to repurchase. Through ~~October 27, 2017,~~June 30, 2018, no shares were repurchased under this ~~authorization or the previous~~ authorization.

Basic earnings per common share is computed by dividing net income available to common shareholders by the weighted average number of shares outstanding during the periods presented. In computing diluted earnings per common share for the three months and ~~nine~~six months ended ~~September~~June 30, ~~2017~~2018, and ~~2016,~~2017, the Company assumes that all dilutive outstanding options to purchase common shares have been exercised at the beginning of the period (or the time of issuance, if later). The dilutive effect of the outstanding options and the restricted shares is reflected by application of the treasury stock method, whereby the proceeds from exercised options and restricted shares are assumed to be used to purchase common ~~stock~~shares at the average market price during the respective periods. The weighted average common shares outstanding used in computing basic earnings per common share for the three months ended ~~September~~June 30, 2018 and 2017 were 67,597,275 and ~~2016 were 66,140,518 and 66,023,069~~66,100,089 shares, respectively. The weighted average common shares outstanding used in computing basic earnings per common share for the ~~nine~~six months ended ~~September~~June 30, 2018 and 2017 were 67,562,336 and ~~2016 were 66,104,914 and 66,004,797~~66,086,817 shares, respectively. The weighted average common shares outstanding used in computing fully diluted earnings per common share for the three months ended ~~September~~June 30, 2018 and 2017 were 67,924,168 and ~~2016 were 66,417,281 and 66,147,202~~66,344,943 shares, respectively. The weighted average common shares outstanding used in computing fully diluted earnings per common share for the ~~nine~~six months ended ~~September~~June 30, 2018 and 2017 were 67,867,965 and ~~2016 were 66,392,210 and 66,135,918~~66,362,191 shares, respectively. For the three and six months ended June 30, 2018 and 2017, there were no weighted average outstanding stock options that were anti-dilutive that have been excluded from the earnings per share calculation.

Interest-bearing time deposits in banks totaled $1,458,000 ~~$1,707,000~~at June 30, 2018 and ~~$1,707,000 at September 30,~~ 2017 ~~and 2016~~ and December 31, ~~2016,~~2017, respectively, and have original maturities generally ranging from one to two years.

Management classifies debt and equity securities asheld-to-maturity,available-for-sale, or trading based on its intent. Debt securities that management has the positive intent and ability to hold to maturity are classified asheld-to-maturity and recorded at cost, adjusted for amortization of premiums and accretion of discounts, which are recognized as adjustments to interest income using the interest method. Securities not classified asheld-to-maturity or trading are classified asavailable-for-sale and recorded at fair value, with all unrealized gains and unrealized losses judged to be temporary, net of deferred income taxes, excluded from earnings and reported in the consolidated statements of comprehensive earnings.Available-for-sale securities that have unrealized losses that are judged other-than-temporary are included in gain (loss) on sale of securities and a new cost basis is established. Securities classified as trading are recorded at fair value with unrealized gains and losses included in earnings.

The Company records itsavailable-for-sale and trading securities portfolio at fair value. Fair values of these securities are determined based on methodologies in accordance with current authoritative accounting guidance. Fair values are volatile and may be influenced by a number of factors, including market interest rates, prepayment speeds, discount rates, credit ratings and yield curves. Fair values for investment securities are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on the quoted prices of similar instruments or an estimate of fair value by using a range of fair value estimates in the market place as a result of the illiquid market specific to the type of security.

When the fair value of a security is below its amortized cost, and depending on the length of time the condition exists and the extent the fair value is below amortized cost, additional analysis is performed to determine whether an other-than-temporary impairment condition exists.Available-for-sale andheld-to-maturity securities are analyzed quarterly for possible other-than-temporary impairment. The analysis considers (i) whether we have the intent to sell our securities prior to recovery and/or maturity, (ii) whether it is more likely than not that we will have to sell our securities prior to recovery and/or maturity, (iii) the length of time and extent to which the fair value has been less than amortized cost, and (iv) the financial condition of the issuer. Often, the information available to conduct these assessments is limited and rapidly changing, making estimates of fair value subject to judgment. If actual information or conditions are different than estimated, the extent of the impairment of the security may be different than previously estimated, which could have a material effect on the Company’s results of operations and financial condition.

The Company’s investment portfolio consists of U.S. Treasury securities, obligations of U.S. government sponsored enterprises and agencies, obligations of states and political subdivisions, mortgage pass-through securities, corporate bonds and general obligation or revenue based municipal bonds. Pricing for such securities is generally readily available and transparent in the market. The Company utilizes independent third-party pricing services to value its investment securities, which the Company reviews as well as the underlying pricing methodologies for reasonableness and to ensure such prices are aligned with pricing matrices. The Company validates quarterly, on a sample basis, prices supplied by the independent pricing services by comparison to prices obtained from other third-party sources.

A summary of the Company’savailable-for-sale securities follows (in thousands):


	September 30, 2017									June 30, 2018
	Amortized Cost Basis		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Estimated Fair Value				Gross		Gross
										Amortized		Unrealized		Unrealized			Estimated
										Cost Basis		Holding Gains		Holding Losses			Fair Value
U.S. Treasury Securities										$	9,957	$	8	$	—		$	9,965
Obligations of U.S. government sponsored enterprises and agencies	$	73,583	$	35	$	(30	)	$	73,588		304		—		(1	)		303
Obligations of states and political subdivisions		1,379,117		56,671		(1,594	)		1,434,194		1,257,547		29,924		(2,696	)		1,284,775
Corporate bonds and other		19,439		118		(2	)		19,555		4,861		—		(79	)		4,782
Residential mortgage-backed securities		1,024,615		8,466		(3,797	)		1,029,284		1,464,345		1,630		(30,718	)		1,435,257
Commercial mortgage-backed securities		328,806		945		(889	)		328,862		471,398		—		(8,913	)		462,485

Total securitiesavailable-for-sale	$	2,825,560	$	66,235	$	(6,312	)	$	2,885,483	$	3,208,412	$	31,562	$	(42,407	)	$	3,197,567

   September 30, 2016
   Amortized
Cost Basis    Gross
Unrealized
Holding
Gains    Gross
Unrealized
Holding
Losses    Estimated
Fair Value
U.S. Treasury securities
   $ 10,685    $ 54    $ —      $ 10,739
Obligations of U.S. government sponsored enterprises and agencies
   114,918    802    —      115,720
Obligations of states and political subdivisions
   1,419,737    83,694    (715 )    1,502,716
Corporate bonds and other
   68,285    1,325    (1 )    69,609
Residential mortgage-backed securities
   750,673    17,125    (1,299 )    766,499
Commercial mortgage-backed securities
   259,636    4,200    (89 )    263,747








Total securitiesavailable-for-sale
   $ 2,623,934    $ 107,200    $ (2,104 )    $ 2,729,030


										June 30, 2017
												Gross		Gross
	December 31, 2016									Amortized		Unrealized		Unrealized			Estimated
	Amortized Cost Basis		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses			Estimated Fair Value		Cost Basis		Holding Gains		Holding Losses			Fair Value
U.S. Treasury securities	$	10,649	$	19	$	—		$	10,668	$	10,578	$	—	$	(5	)	$	10,573
Obligations of U.S. government sponsored enterprises and agencies		113,450		253		—			113,703		73,666		60		(21	)		73,705
Obligations of states and political subdivisions		1,534,095		40,194		(10,013	)		1,564,276		1,476,714		58,707		(3,548	)		1,531,873
Corporate bonds and other		51,920		476		(3	)		52,393		30,079		163		(2	)		30,240
Residential mortgage-backed securities		848,614		8,260		(5,513	)		851,361		971,557		8,083		(4,558	)		975,082
Commercial mortgage-backed securities		269,044		622		(1,230	)		268,436		342,651		1,202		(813	)		343,040

Total securitiesavailable-for-sale	$	2,827,772	$	49,824	$	(16,759	)	$	2,860,837	$	2,905,245	$	68,215	$	(8,947	)	$	2,964,513


										December 31, 2017
												Gross		Gross
										Amortized		Unrealized		Unrealized			Estimated
										Cost Basis		Holding Gains		Holding Losses			Fair Value
Obligations of U.S. government sponsored enterprises and agencies										$	60,516	$	—	$	(186	)	$	60,330
Obligations of states and political subdivisions											1,369,295		52,491		(936	)		1,420,850
Corporate bonds and other											11,421		43		(5	)		11,459
Residential mortgage-backed securities											1,223,452		4,561		(8,916	)		1,219,097
Commercial mortgage-backed securities											377,934		263		(2,460	)		375,737

Total securities available-for-sale										$	3,042,618	$	57,358	$	(12,503	)	$	3,087,473

Disclosures related to the Company’sheld-to-maturity securities, which totaled ~~$129,000 and $121,000~~$105,000 at ~~September~~June 30, ~~2016, and December 31, 2016, respectively,~~2017 have not been presented due to insignificance. There were no such balances inheld-to-maturity securities ~~owned by the Company~~ at ~~September~~June 30, 2018 or December 31, 2017.

The Company invests in mortgage-backed securities that have expected maturities that differ from their contractual maturities. These differences arise because borrowers may have the right to call or prepay obligations with or without a prepayment penalty. These securities include collateralized mortgage obligations (CMOs) and other asset backed securities. The expected maturities of these securities at ~~September~~June 30, ~~2017~~2018 were computed by using scheduled amortization of balances and historical prepayment rates. At ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016,~~2017, the Company did not hold CMOs that entail higher risks than standard mortgage-backed securities.

The amortized cost and estimated fair value ofavailable-for-sale securities at ~~September~~June 30, ~~2017,~~2018, by contractual and expected maturity, are shown below (in thousands):


					Amortized		Estimated
	Amortized Cost Basis		Estimated Fair Value		Cost Basis		Fair Value
Due within one year	$	187,370	$	189,136	$	183,132	$	184,671
Due after one year through five years		650,523		679,535		609,481		626,252
Due after five years through ten years		632,562		656,623		478,355		486,921
Due after ten years		1,684		2,043		1,701		1,981
Mortgage-backed securities		1,353,421		1,358,146		1,935,743		1,897,742

Total	$	2,825,560	$	2,885,483	$	3,208,412	$	3,197,567

The following tables disclose ~~as of September 30, 2017 and 2016, and December 31, 2016,~~ the Company’s investment securities that have been in a continuousunrealized-loss position for less than 12 months and for 12 or more months (in thousands):


	Less than 12 Months				12 Months or Longer				Total				Less than 12 Months				12 Months or Longer				Total
September 30, 2017	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Obligations of U.S.government sponsored enterprises and agencies	$	45,050	$	30	$	—	$	—	$	45,050	$	30
June 30, 2018													Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Obligations of U.S. government sponsored enterprises and agencies													$	303	$	1	$	—	$	—	$	303	$	1
Obligations of states and political subdivisions		54,983		309		45,217		1,285		100,200		1,594		136,950		1,122		43,239		1,574		180,189		2,696
Corporate bonds and other		—		—		240		2		240		2		4,617		76		233		3		4,850		79
Residential mortgage-backed securities		225,369		1,531		131,849		2,266		357,218		3,797		1,073,327		21,838		227,155		8,880		1,300,482		30,718
Commercial mortgage-backed securities		170,146		751		21,001		138		191,147		889		379,201		7,477		83,285		1,436		462,486		8,913

Total	$	495,548	$	2,621	$	198,307	$	3,691	$	693,855	$	6,312	$	1,594,398	$	30,514	$	353,912	$	11,893	$	1,948,310	$	42,407


	Less than 12 Months				12 Months or Longer				Total
September 30, 2016	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Obligations of states and political subdivisions	$	82,131	$	711	$	741	$	4	$	82,872	$	715
Corporate bonds and other		12,257		1		—		—		12,257		1
Residential mortgage-backed securities		80,015		267		57,334		1,032		137,349		1,299
Commercial mortgage-backed securities		10,213		25		13,692		64		23,905		89

Total	$	184,616	$	1,004	$	71,767	$	1,100	$	256,383	$	2,104


	Less than 12 Months				12 Months or Longer				Total
December 31, 2016	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Obligations of state and political subdivisions	$	446,052	$	9,997	$	1,209	$	16	$	447,261	$	10,013
Corporate bonds and other		244		3		—		—		244		3
Residential mortgage-backed securities		372,331		4,532		33,227		981		405,558		5,513
Commercial mortgage-backed securities		193,495		1,180		13,263		50		206,758		1,230

Total	$	1,012,122	$	15,712	$	47,699	$	1,047	$	1,059,821	$	16,759


December 31, 2017	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Obligations of U.S. government sponsored enterprises and agencies	$	60,329	$	186	$	—	$	—	$	60,329	$	186
Obligations of state and political subdivisions		66,361		219		44,938		717		111,299		936
Corporate bonds and other		224		2		237		3		461		5
Residential mortgage-backed securities		701,252		3,988		239,641		4,928		940,893		8,916
Commercial mortgage-backed securities		239,548		1,500		92,549		960		332,097		2,460

Total	$	1,067,714	$	5,895	$	377,365	$	6,608	$	1,445,079	$	12,503

The number of investments in an unrealized loss position totaled ~~179~~459 at ~~September~~June 30, ~~2017.~~2018. We do not believe these unrealized losses are “other-than-temporary” as (i) we do not have the intent to sell our securities prior to recovery and/or maturity and (ii) it is more likely than not that we will not have to sell our securities prior to recovery and/or maturity. In making this determination, we also consider the length of time and extent to which fair value has been less than cost and the financial condition of the issuer. The unrealized losses noted are interest rate related due to the level of interest rates at ~~September~~June 30, ~~2017~~2018 compared to the time of purchase. We have reviewed the ratings of the issuers and have not identified any issues related to the ultimate repayment of principal as a result of credit concerns on these securities. Our mortgage related securities are backed by GNMA, FNMA and FHLMC or are collateralized by securities backed by these agencies. At ~~September~~June 30, ~~2017, 82.70%~~2018, 84.03% of ouravailable-for-sale securities that are obligations of states and political subdivisions were issued within the State of Texas, of which ~~31.16%~~29.04% are guaranteed by the Texas Permanent School Fund.

At ~~September~~June 30, ~~2017, $1,787,958,000~~2018, $1,919,043,000 of the Company’s securities were pledged as collateral for public or trust fund deposits, repurchase agreements and for other purposes required or permitted by law.

During the quarters ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, sales of investment securities that were classified asavailable-for-sale totaled ~~$83,605,000~~$57,680,000 and ~~$7,410,000,~~$30,791,000, respectively. Gross realized gains from security sales during the ~~third~~second quarter of 2018 and 2017 totaled $287,000 and ~~2016 totaled $1,750,000 and $239,000,~~$795,000, respectively. Gross realized losses from security sales during the ~~third~~second quarter of 2018 and 2017 totaled ~~$675,000. There were no gross realized losses during the third quarter of 2016.~~

$220,000 and $48,000, respectively. During the ~~nine~~six months ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, sale of investment securities were classified asavailable-for-sale totaled ~~$120,576,000~~$149,125,000 and ~~$20,792,000,~~$36,971,000, respectively. Gross realized gains from security sales during the ~~nine-month~~six-month period ended ~~September~~June 30, 2018 and 2017 totaled $1,529,000 and ~~2016~~ totaled ~~$2,550,000 and $1,158,000,~~$800,000, respectively. Gross realized losses from security sales during the ~~nine-month~~six-month periods ended ~~September~~June 30, 2018 and 2017 totaled $241,000 and ~~2016 totaled $725,000 and $5,000,~~$50,000, respectively.

The specific identification method was used to determine cost in order to compute the realized gains and losses.

Loans held for investment are stated at the amount of unpaid principal, reduced by unearned income and an allowance for loan losses. Interest on loans is calculated by using the simple interest method on daily balances of the principal amounts outstanding. The Company defers and amortizes net loan origination fees and costs as an adjustment to yield. The allowance for loan losses is established through a provision for loan losses charged to expense. Loans are charged against the allowance for loan losses when management believes the collectability of the principal is unlikely.

The Company has certain lending policies and procedures in place that are designed to maximize loan income with an acceptable level of risk. Management reviews and approves these policies and procedures on an annual basis and makes changes as appropriate. Management receives and reviews monthly reports related to loan originations, quality, concentrations, delinquencies, nonperforming and potential problem loans. Diversification in the loan portfolio is a means of managing risk associated with fluctuations in economic conditions, both by type of loan and geographic location.

Commercial loans are underwritten after evaluating and understanding the borrower’s ability to operate profitably and effectively. Underwriting standards are designed to determine whether the borrower possesses sound business ethics and practices and to evaluate current and projected cash flows to determine the ability of the borrower to repay their obligations as agreed. Commercial loans are primarily made based on the identified cash flows of the borrower and, secondarily, on the underlying collateral provided by the borrower. Most commercial loans are secured by the assets being financed or other business assets, such as accounts receivable or inventory, and include personal guarantees.

Agricultural loans are subject to underwriting standards and processes similar to commercial loans. These agricultural loans are based primarily on the identified cash flows of the borrower and secondarily on the underlying collateral provided by the borrower. Most agricultural loans are secured by the agriculture related assets being financed, such as farm land, cattle or equipment, and include personal guarantees.

Real estate loans are also subject to underwriting standards and processes similar to commercial and agricultural loans. These loans are underwritten primarily based on projected cash flows and, secondarily, as loans secured by real estate. The repayment of real estate loans is generally largely dependent on the successful operation of the property securing the loans or the business conducted on the property securing the loan. Real estate loans may be more adversely affected by conditions in the real estate markets or in the general economy. The properties securing the Company’s real estate portfolio are generally diverse in terms of type and geographic location within Texas. This diversity helps reduce the exposure to adverse economic events that affect any single market or industry. Generally, real estate loans are owner occupied which further reduces the Company’s risk.

Consumer loan underwriting utilizes methodical credit standards and analysis to supplement the Company’s underwriting policies and procedures. The Company’s loan policy addresses types of consumer loans that may be originated and the collateral, if secured, which must be perfected. The relatively smaller individual dollar amounts of consumer loans that are spread over numerous individual borrowers also minimize the Company’s risk.

The allowance for loan losses is an amount which represents management’s best estimate of probable losses that are inherent in the Company’s loan portfolio as of the balance sheet date. The allowance for loan losses is comprised of three elements: (i) specific reserves determined based on probable losses on specific classified loans; (ii) a historical valuation reserve component that considers historical loss rates; and (iii) qualitative reserves based upon general economic conditions and other qualitative risk factors both internal and external to the Company. The allowance for loan losses is increased by charges to income and decreased bycharge-offs (net of recoveries). Management’s periodic evaluation of the appropriateness of the allowance is based on general economic conditions, the financial condition of borrowers, the value and liquidity of collateral, delinquency, prior loan loss experience, and the results of periodic reviews of the portfolio. For purposes of determining our historical valuation reserve, the loan portfolio, less cash secured loans, government guaranteed loans and classified loans, is multiplied by the Company’s historical loss rate. Specific allocations are increased or decreased in accordance with deterioration or improvement in credit quality and a corresponding increase or decrease in risk of loss on a particular loan. In addition, we adjust our allowance for qualitative factors such as current local economic conditions and trends, including, without limitations, unemployment, oil and gas prices, flood and drought conditions, changes in lending staff, policies and procedures, changes in credit concentrations, changes in the trends and severity of problem loans and changes in trends in volume and terms of loans. This qualitative reserve serves to estimate for additional areas of losses inherent in our portfolio that are not reflected in our historic loss factors.

Although we believe we use the best information available to make loan loss allowance determinations, future adjustments could be necessary if circumstances or economic conditions differ substantially from the assumptions used in making our initial determinations. A decline in the economy and employment rates could result in increased levels ofnon-performing assets and charge-offs, increased loan provisions and reductions in income. Additionally, bank regulatory agencies periodically review our allowance for loan losses and methodology and could require, in accordance with generally accepted accounting principles, additional provisions to the allowance for loan losses based on their judgment of information available to them at the time of their examination as well as changes to our methodology.

Accrual of interest is discontinued on a loan and payments are applied to principal when management believes, after considering economic and business conditions and collection efforts, the borrower’s financial condition is such that collection of interest is doubtful. Except consumer loans, generally all loans past due greater than 90 days, based on contractual terms, are placed onnon-accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Consumer loans are generallycharged-off when a loan becomes past due 90 days. For other loans in the portfolio, facts and circumstances are evaluated in makingcharge-off decisions.

Loans are considered impaired when, based on current information and events, management determines that it is probable we will be unable to collect all amounts due in accordance with the loan agreement, including scheduled principal and interest payments. If a loan is impaired, a specific valuation allowance is allocated, if necessary. Interest payments on impaired loans are typically applied to principal unless collectability of the principal amount is reasonably assured, in which case interest is recognized on a cash basis. Impaired loans, or portions thereof, are charged off when deemed uncollectable.

The Company’s policy requires measurement of the allowance for an impaired, collateral dependent loan based on the fair value of the collateral. Other loan impairments fornon-collateral dependent loans are measured based on the present value of expected future cash flows or the loan’s observable market price. At ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016,~~2017, all significant impaired loans have been determined to be collateral dependent and the allowance for loss has been measured utilizing the estimated fair value of the collateral less costs to sell.

From time to time, the Company modifies its loan agreement with a borrower. A modified loan is considered a troubled debt restructuring when two conditions are met: (i) the borrower is experiencing financial difficulty and (ii) concessions are made by the Company that would not otherwise be considered for a borrower with similar credit risk characteristics. Modifications to loan terms may include a lower interest rate, a reduction of principal, or a longer term to maturity. For all impaired loans, including the Company’s troubled debt restructurings, the Company performs a periodic, well-documented credit evaluation of the borrower’s financial condition and prospects for repayment to assess the likelihood that all principal and interest payments required under the terms of the agreement will be collected in full. When doubt exists about the ultimate collectability of principal and interest, the troubled debt restructuring remains onnon-accrual status and payments received are applied to reduce principal to the extent necessary to eliminate such doubt. This determination of accrual status is judgmental and is based on facts and circumstances related to each troubled debt restructuring. Each of these loans is individually evaluated for impairment and a specific reserve is recorded based on probable losses, taking into consideration the related collateral, modified loan terms and cash flow. As of ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016,~~2017, substantially all of the Company’s troubled debt restructured loans are included in thenon-accrual totals.

~~The Company originates certain mortgage loans for sale in the secondary market. Accordingly, these loans are classified asheld-for-sale~~ and are carried at the lower of cost or fair value on an aggregate basis. The mortgage loan sales contracts contain indemnification clauses should the loans default, generally in the first three to nine months, or if documentation is determined not to be in compliance with regulations. The Company’s historic losses as a result of these indemnities have been insignificant.

Loans acquired, including loans acquired in a business combination, are initially recorded at fair value with no valuation allowance. Acquired loans are segregated between those considered to be credit impaired and those deemed performing. To make this determination, management considers such factors as past due status,non-accrual status and credit risk ratings. The fair value of acquired performing loans is determined by discounting expected cash flows, both principal and interest, at prevailing market interest rates. The difference between the fair value and principal balances at acquisition date, the fair value discount, is accreted into interest income over the estimated life of the acquired performing loan portfolio.

Purchased credit impaired loans are those loans that showed evidence of deterioration of credit quality since origination and for which it is probable, at acquisition, that the Company will be unable to collect all amounts contractually owed. Their acquisition fair value, which includes a credit component at the acquisition date, was based on the estimate of cash flows, both principal and interest, expected to be collected or estimated collateral values if cash flows are not estimable, discounted at prevailing market rates of interest. The difference between the discounted cash flows expected at acquisition and the investment in the loan is recognized as interest income on a level-yield method over the life of the loan, unless management was unable to reasonably forecast cash flows in which case the loans were placed on

nonaccrual. Contractually required payments for interest and principal that exceed the cash flows expected at acquisition are not recognized as a yield adjustment. Increases in expected cash flows subsequent to the initial investment are recognized prospectively through adjustment of the yield on the loan over its remaining life. Decreases in expected cash flows subsequent to acquisition are recognized as impairment. Valuation allowances on these impaired loans reflect only losses incurred after the acquisition. The carrying amount of purchased credit impaired loans at ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016,~~2017, was ~~$736,000, $1,853,000~~$2,813,000, $889,000 and ~~$1,256,000,~~$618,000, respectively, compared to a contractual balance of ~~$932,000, $2,528,000,~~$3,918,000, $1,174,290, and ~~$1,865,000,~~$755,000, respectively. Other purchased credit impaired loan disclosures were omitted due to immateriality.

Loansheld-for-investment by class of financing receivables are as follows (in thousands):


	September 30,				December 31,		June 30,				December 31,
	2017		2016		2016		2018		2017		2017
Commercial	$	674,947	$	663,581	$	674,410	$	775,010	$	668,049	$	684,099
Agricultural		83,005		84,716		84,021		92,583		77,342		94,543
Real estate		2,297,556		2,191,260		2,189,844		2,567,878		2,271,100		2,302,998
Consumer		416,719		398,236		409,032		396,009		422,861		403,929

Total loansheld-for-investment	$	3,472,227	$	3,337,793	$	3,357,307	$	3,831,480	$	3,439,352	$	3,485,569

~~Loans held for sale totaled $19,119,000, $31,591,000 and $26,898,000 at September 30, 2017 and 2016, and December 31, 2016, respectively, which are valued using the lower of cost or fair value.~~

The Company’snon-accrual loans, loans still accruing and past due 90 days or more and restructured loans are as follows (in thousands):


	September 30,				December 31,		June 30,				December 31,
	2017		2016		2016		2018		2017		2017
Non-accrual loans*	$	18,750	$	33,712	$	27,371	$	26,685	$	21,489	$	17,670
Loans still accruing and past due 90 days or more		257		107		284		200		314		288
Troubled debt restructured loans**		668		750		701		514		672		627

Total	$	19,675	$	34,569	$	28,356	$	27,399	$	22,475	$	18,585

*Includes $736,000, $1,853,000 and $1,256,000 of purchased credit impaired loans as of September

The Company’s recorded investment in impaired loans and the related valuation allowance are as follows (in thousands):

The Company had ~~$22,076,000, $34,938,000~~$28,104,000, $24,720,000 and ~~$29,000,000~~$20,117,000 innon-accrual, past due 90 days or more and still accruing, restructured loans and foreclosed assets at ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016,~~2017, respectively.Non-accrual loans at ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016,~~2017, consisted of the following by class of financing receivables (in thousands):


	September 30,				December 31,		June 30,				December 31,
	2017		2016		2016		2018		2017		2017
Commercial	$	4,133	$	12,714	$	7,284	$	7,580	$	5,404	$	3,612
Agricultural		60		167		99		1,259		61		134
Real estate		13,386		19,582		18,754		16,715		14,801		12,838
Consumer		1,171		1,249		1,234		1,131		1,223		1,086

Total	$	18,750	$	33,712	$	27,371	$	26,685	$	21,489	$	17,670

No significant additional funds are committed to be advanced in connection with impaired loans as of ~~September~~June 30, ~~2017.~~2018.

The Company’s impaired loans and related allowance ~~as of September 30, 2017 and 2016, and December 31, 2016,~~ are summarized in the following tables by class of financing receivables (in thousands). No interest income was recognized on impaired loans subsequent to their classification as impaired.


June 30, 2018	Unpaid Contractual Principal Balance		Recorded Investment With No Allowance*		Recorded Investment With Allowance		Total Recorded Investment		Related Allowance		Year–to-Date Average Recorded Investment		Three- Month Average Recorded Investment
Commercial	$	9,432	$	3,264	$	4,316	$	7,580	$	1,379	$	8,485	$	8,226
Agricultural		1,278		50		1,209		1,259		368		1,670		1,589
Real Estate		22,358		3,569		13,146		16,715		2,645		18,441		18,019
Consumer		1,344		169		962		1,131		431		1,240		1,192

Total	$	34,412	$	7,052	$	19,633	$	26,685	$	4,823	$	29,836	$	29,026

The Company recognized interest income on impaired loans prior to being recognized as impaired of approximately ~~$829,000~~$624,000 during the year ended December 31, ~~2016.~~2017. Such amounts for the three-month and ~~nine-month~~six-month periods ended ~~September~~June 30, ~~2017~~2018 and ~~2016~~2017 were not significant.

From a credit risk standpoint, the Company rates its loans in one of four categories: (i) pass, (ii) special mention, (iii) substandard or (iv) doubtful. Loans rated as loss arecharged-off.

The ratings of loans reflect a judgment about the risks of default and loss associated with the loan. The Company reviews the ratings on our credits as part of ouron-going monitoring of the credit quality of our loan portfolio. Ratings are adjusted to reflect the degree of risk and loss that are felt to be inherent in each credit as of each reporting period. Our methodology is structured so that specific allocations are increased in accordance with deterioration in credit quality (and a corresponding increase in risk and loss) or decreased in accordance with improvement in credit quality (and a corresponding decrease in risk and loss).

Credits rated special mention show clear signs of financial weaknesses or deterioration in credit worthiness, however, such concerns are not so pronounced that the Company generally expects to experience significant loss within the short-term. Such credits typically maintain the ability to perform within standard credit terms and credit exposure is not as prominent as credits rated more harshly.

Credits rated substandard are those in which the normal repayment of principal and interest may be, or has been, jeopardized by reason of adverse trends or developments of a financial, managerial, economic or political nature, or important weaknesses exist in collateral. A protracted workout on these credits is a distinct possibility. Prompt corrective action is therefore required to strengthen the Company’s position, and/or to reduce exposure and to assure that adequate remedial measures are taken by the borrower. Credit exposure becomes more likely in such credits and a serious evaluation of the secondary support to the credit is performed.

Credits rated doubtful are those in which full collection of principal appears highly questionable, and which some degree of loss is anticipated, even though the ultimate amount of loss may not yet be certain and/or other factors exist which could affect collection of debt. Based upon available information, positive action by the Company is required to avert or minimize loss. Credits rated doubtful are generally also placed onnon-accrual.

The following summarizes the Company’s internal ratings of its loansheld-for-investment by class of financing receivables and portfolio segments, which are the same ~~at September 30, 2017 and 2016, and December 31, 2016~~ (in thousands):


September 30, 2017	Pass		Special Mention		Substandard		Doubtful		Total
June 30, 2018											Pass		Special Mention		Substandard		Doubtful		Total
Commercial	$	632,693	$	7,997	$	34,257	$	—	$	674,947	$	749,387	$	6,439	$	19,184	$	—	$	775,010
Agricultural		79,227		841		2,937		—		83,005		87,768		1,568		3,247		—		92,583
Real Estate		2,224,970		26,231		46,355		—		2,297,556		2,487,399		26,182		54,297		—		2,567,878
Consumer		414,043		168		2,508		—		416,719		393,200		368		2,441		—		396,009

Total	$	3,350,933	$	35,237	$	86,057	$	—	$	3,472,227	$	3,717,754	$	34,557	$	79,169	$	—	$	3,831,480


September 30, 2016	Pass		Special Mention		Substandard		Doubtful		Total
Commercial	$	614,900	$	6,108	$	42,573	$	—	$	663,581
Agricultural		82,400		—		2,316		—		84,716
Real Estate		2,118,807		19,064		53,389		—		2,191,260
Consumer		395,086		316		2,832		2		398,236

Total	$	3,211,193	$	25,488	$	101,110	$	2	$	3,337,793


December 31, 2016	Pass		Special Mention		Substandard		Doubtful		Total
Commercial	$	629,756	$	5,769	$	38,885	$	—	$	674,410
Agricultural		81,620		715		1,686		—		84,021
Real Estate		2,111,947		18,091		59,806		—		2,189,844
Consumer		406,182		212		2,638		—		409,032

Total	$	3,229,505	$	24,787	$	103,015	$	—	$	3,357,307

~~At September 30, 2017 and 2016, and December 31, 2016, the~~The Company’s past due loans are as follows (in thousands):


September 30, 2017	15-59 Days Past Due*		60-89 Days Past Due		Greater Than 90 Days		Total Past Due		Current		Total Loans		90 Days Past Due Still Accruing
June 30, 2018															15-59 Days Past Due*		60-89 Days Past Due		Greater Than 90 Days		Total Past Due		Current		Total Loans		90 Days Past Due Still Accruing
Commercial	$	3,288	$	585	$	1,495	$	5,368	$	669,579	$	674,947	$	212	$	4,950	$	1,085	$	3,029	$	9,064	$	765,946	$	775,010	$	74
Agricultural		322		—		—		322		82,683		83,005		—		626		159		—		785		91,798		92,583		—
Real Estate		12,636		984		2,293		15,913		2,281,643		2,297,556		—		13,441		474		532		14,447		2,553,431		2,567,878		70
Consumer		1,211		457		176		1,844		414,875		416,719		45		919		232		76		1,227		394,782		396,009		56

Total	$	17,457	$	2,026	$	3,964	$	23,447	$	3,448,780	$	3,472,227	$	257	$	19,936	$	1,950	$	3,637	$	25,523	$	3,805,957	$	3,831,480	$	200


September 30, 2016	15-59 Days Past Due*		60-89 Days Past Due		Greater Than 90 Days		Total Past Due		Current		Total Loans		90 Days Past Due Still Accruing
Commercial	$	4,707	$	841	$	6,950	$	12,498	$	651,083	$	663,581	$	61
Agricultural		523		63		—		586		84,130		84,716		—
Real Estate		13,444		1,496		3,376		18,316		2,172,944		2,191,260		34
Consumer		1,418		314		180		1,912		396,324		398,236		12

Total	$	20,092	$	2,714	$	10,506	$	33,312	$	3,304,481	$	3,337,793	$	107


December 31, 2016	15-59 Days Past Due*		60-89 Days Past Due		Greater Than 90 Days		Total Past Due		Total Current		Total Loans		Total 90 Days Past Due Still Accruing
Commercial	$	3,908	$	1,122	$	2,220	$	7,250	$	667,160	$	674,410	$	10
Agricultural		185		—		—		185		83,836		84,021		—
Real Estate		13,172		1,301		5,268		19,741		2,170,103		2,189,844		272
Consumer		1,845		368		122		2,335		406,697		409,032		2

Total	$	19,110	$	2,791	$	7,610	$	29,511	$	3,327,796	$	3,357,307	$	284


June 30, 2017	15-59 Days Past Due*		60-89 Days Past Due		Greater Than 90 Days		Total Past Due		Current		Total Loans		90 Days Past Due Still Accruing
Commercial	$	3,026	$	872	$	2,673	$	6,571	$	661,478	$	668,049	$	150
Agricultural		633		—		8		641		76,701		77,342		8
Real Estate		12,794		1,713		4,661		19,168		2,251,932		2,271,100		99
Consumer		1,134		414		99		1,647		421,214		422,861		57

Total	$	17,587	$	2,999	$	7,441	$	28,027	$	3,411,325	$	3,439,352	$	314

The following table details the allowance for loan losses ~~at September 30, 2017 and 2016, and December 31, 2016,~~ by portfolio segment (in thousands). There were no allowances for purchased credit impaired loans at ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016.~~2017. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.


September 30, 2017	Commercial		Agricultural		Real Estate		Consumer		Total
June 30, 2018											Commercial		Agricultural		Real Estate		Consumer		Total
Loans individually evaluated for impairment	$	1,671	$	17	$	1,984	$	505	$	4,177	$	1,379	$	368	$	2,645	$	431	$	4,823
Loans collectively evaluated for impairment		10,201		1,284		26,484		5,776		43,745		7,839		1,034		30,598		5,657		45,128

Total	$	11,872	$	1,301	$	28,468	$	6,281	$	47,922	$	9,218	$	1,402	$	33,243	$	6,088	$	49,951


September 30, 2016	Commercial		Agricultural		Real Estate		Consumer		Total
Loans individually evaluated for impairment	$	3,983	$	41	$	2,566	$	452	$	7,042
Loans collectively evaluated for impairment		9,733		1,027		23,655		3,841		38,256

Total	$	13,716	$	1,068	$	26,221	$	4,293	$	45,298

December 31, 2016
   Commercial    Agricultural    Real
Estate    Consumer    Total
Loans individually evaluated for impairment
   $ 2,128    $ 25    $ 2,428    $ 431    $ 5,012
Loans collectively evaluated for impairment
   9,579    1,076    24,436    5,676    40,767










Total
   $ 11,707    $ 1,101    $ 26,864    $ 6,107    $ 45,779

Changes in the allowance for loan losses ~~for the three and nine months ended September 30, 2017 and 2016,~~ are summarized as follows by portfolio segment (in thousands):


Three months ended September 30, 2017	Commercial			Agricultural			Real Estate			Consumer			Total
Three months ended June 30, 2018																Commercial			Agricultural			Real Estate			Consumer			Total
Beginning balance	$	11,935		$	1,127		$	28,023		$	6,325		$	47,410		$	9,277		$	1,512		$	32,539		$	6,171		$	49,499
Provision for loan losses		557			157			424			277			1,415			335			(115	)		799			86			1,105
Recoveries		119			17			50			91			277			126			5			18			147			296
Charge-offs		(739	)		—			(29	)		(412	)		(1,180	)		(520	)		—			(113	)		(316	)		(949	)

Ending balance	$	11,872		$	1,301		$	28,468		$	6,281		$	47,922		$	9,218		$	1,402		$	33,243		$	6,088		$	49,951


Three months ended September 30, 2016	Commercial			Agricultural			Real Estate			Consumer			Total
Beginning balance	$	14,026		$	1,451		$	25,644		$	3,939		$	45,060
Provision for loan losses		3,248			(358	)		296			647			3,833
Recoveries		298			4			367			108			777
Charge-offs		(3,856	)		(29	)		(86	)		(401	)		(4,372	)

Ending balance	$	13,716		$	1,068		$	26,221		$	4,293		$	45,298


Nine months ended September 30, 2017	Commercial			Agricultural			Real Estate			Consumer			Total
Beginning balance	$	11,707		$	1,101		$	26,864		$	6,107		$	45,779
Provision for loan losses		1,485			211			2,556			838			5,090
Recoveries		868			25			141			400			1,434
Charge-offs		(2,188	)		(36	)		(1,093	)		(1,064	)		(4,381	)

Ending balance	$	11,872		$	1,301		$	28,468		$	6,281		$	47,922


Nine months ended September 30, 2016	Commercial			Agricultural			Real Estate			Consumer			Total
Beginning balance	$	12,644		$	1,191		$	24,375		$	3,667		$	41,877
Provision for loan losses		6,239			41			367			1,572			8,219
Recoveries		839			20			1,957			427			3,243
Charge-offs		(6,006	)		(184	)		(478	)		(1,373	)		(8,041	)

Ending balance	$	13,716		$	1,068		$	26,221		$	4,293		$	45,298

The Company’s recorded investment in loans ~~as of September 30, 2017 and 2016, and December 31, 2016~~ related to the balance in the allowance for loan losses on the basis of the Company’s impairment methodology ~~was~~is as follows (in thousands). Purchased credit impaired loans of ~~$736,000, $1,853,000~~$2,813,000, $889,000 and ~~$1,256,000~~$618,000 at ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016,~~2017, respectively, are included in loans individually evaluated for impairment.


September 30, 2017	Commercial		Agricultural		Real Estate		Consumer		Total
Loans individually evaluated for impairment	$	4,133	$	60	$	13,386	$	1,171	$	18,750
Loans collectively evaluated for impairment		670,814		82,945		2,284,170		415,548		3,453,477

Total	$	674,947	$	83,005	$	2,297,556	$	416,719	$	3,472,227


September 30, 2016	Commercial		Agricultural		Real Estate		Consumer		Total
Loans individually evaluated for impairment	$	12,714	$	167	$	19,582	$	1,249	$	33,712
Loans collectively evaluated for impairment		650,867		84,549		2,171,678		396,987		3,304,081

Total	$	663,581	$	84,716	$	2,191,260	$	398,236	$	3,337,793


December 31, 2016	Commercial		Agricultural		Real Estate		Consumer		Total
December 31, 2017											Commercial		Agricultural		Real Estate		Consumer		Total
Loans individually evaluated for impairment	$	7,284	$	99	$	18,754	$	1,234	$	27,371	$	3,612	$	134	$	12,838	$	1,086	$	17,670
Loan collectively evaluated for impairment		667,126		83,922		2,171,090		407,798		3,329,936		680,487		94,409		2,290,160		402,843		3,467,899

Total	$	674,410	$	84,021	$	2,189,844	$	409,032	$	3,357,307	$	684,099	$	94,543	$	2,302,998	$	403,929	$	3,485,569

The Company’s loans that were modified ~~in the three and nine months ended September 30, 2017 and 2016~~ and considered troubled debt restructurings are as follows (in thousands):


	Three Months Ended September 30, 2017						Nine Months Ended September 30, 2017
	Number		Pre- Modification Recorded Investment		Post- Modification Recorded Investment		Number		Pre- Modification Recorded Investment		Post- Modification Recorded Investment
Commercial		3	$	514	$	514		9	$	838	$	838
Agricultural		—		—		—		—		—		—
Real Estate		1		256		256		3		473		473
Consumer		—		—		—		1		25		25

Total		4	$	770	$	770		13	$	1,336	$	1,336
													Three Months Ended June 30, 2018						Six Months Ended June 30, 2018
															Pre-Modification		Post-Modification				Pre-Modification		Post-Modification
	Three Months Ended September 30, 2016						Nine Months Ended September 30, 2016								Recorded		Recorded				Recorded		Recorded
	Number		Pre- Modification Recorded Investment		Post- Modification Recorded Investment		Number		Pre- Modification Recorded Investment		Post- Modification Recorded Investment		Number		Investment		Investment		Number		Investment		Investment
Commercial		3	$	230	$	230		14	$	3,156	$	3,156		1	$	279	$	279		1	$	279	$	279
Agricultural		—		—		—		—		—		—		—		—		—		1		4		4
Real Estate		3		706		706		5		1,169		1,169		2		162		162		4		525		525
Consumer		1		44		44		5		162		162		3		39		39		6		113		113

Total		7	$	980	$	980		24	$	4,487	$	4,487		6	$	480	$	480		12	$	921	$	921

The balances below provide information as to how the loans were modified as troubled debt restructured loans ~~during the three and nine months ended September 30, 2017 and 2016~~ (in thousands):


	Three Months Ended September 30, 2017						Nine Months Ended September 30, 2017						Three Months Ended June 30, 2018						Six Months Ended June 30, 2018
	Adjusted Interest Rate		Extended Maturity		Combined Rate and Maturity		Adjusted Interest Rate		Extended Maturity		Combined Rate and Maturity		Adjusted Interest Rate		Extended Maturity		Combined Rate and Maturity		Adjusted Interest Rate		Extended Maturity		Combined Rate and Maturity
Commercial	$	—	$	—	$	514		—	$	181	$	657	$	—	$	—	$	279		—	$	—	$	279
Agricultural		—		—		—		—		—		—		—		—		—		—		—		4
Real Estate		—		256		—		—		312		161		—		162		—		—		162		363
Consumer		—		—		—		—		25		—		—		—		39		—		—		113

Total	$	—	$	256	$	514		—	$	518	$	818	$	—	$	162	$	318		—	$	162	$	759


	Three Months Ended September 30, 2016						Nine Months Ended September 30, 2016						Three Months Ended June 30, 2017						Six Months Ended June 30, 2017
	Adjusted Interest Rate		Extended Maturity		Combined Rate and Maturity		Adjusted Interest Rate		Extended Maturity		Combined Rate and Maturity		Adjusted Interest Rate		Extended Maturity		Combined Rate and Maturity		Adjusted Interest Rate		Extended Maturity		Combined Rate and Maturity
Commercial	$	—	$	112	$	118		—	$	2,561	$	595	$	—	$	90	$	—		—	$	180	$	144
Agricultural		—		—		—		—		—		—		—		—		—		—		—		—
Real Estate		—		185		521		—		298		871		—		—		161		—		56		161
Consumer		—		—		44		—		43		119		—		25		—		—		25		—

Total	$	—	$	297	$	683		—	$	2,902	$	1,585	$	—	$	115	$	161		—	$	261	$	305

During the three months ended ~~September~~June 30, 2018 and 2017, ~~and 2016, two~~no loans ~~and two loans, respectively,~~ were modified as a troubled debt restructured loan within the previous 12 months and for which there was a payment default. During the ~~nine~~six months ended ~~September~~June 30, 2017, ~~and 2016, four~~two loans ~~and three loans, respectively,~~ were modified in thesix-month period as a troubled debt restructured loan within the previous 12 months and for which there was a payment default. There were no such defaults for the six months ended June 30, 2018. A default for purposes of this disclosure is a troubled debt restructured loan in which the borrower is 90 days past due or more or results in the foreclosure and repossession of the applicable collateral. The loans with payment default are as follows (dollars in thousands):

As of ~~September~~June 30, ~~2017,~~2018, the Company has no commitments to lend additional funds to loan customers whose terms have been modified in troubled debt restructurings.

Our subsidiary bank has established a line of credit with the Federal Home Loan Bank of Dallas (FHLB) to provide liquidity and meet pledging requirements for those customers eligible to have securities pledged to secure certain uninsured deposits. At ~~September~~June 30, ~~2017, $2,140,557,000~~2018, $2,378,431,000 in loans held by our bank subsidiary were subject to blanket liens as security for this line of credit. At ~~September~~June 30, ~~2017,~~2018, there was ~~no balance~~$60,000,000 outstanding under this line of credit. At June 30, 2018, $1,500,000 million in letters of credit were outstanding under this line of credit that were pledged as collateral for public funds held by our bank subsidiary.

~~Borrowings~~The Company originates certain mortgage loans for sale in the secondary market. The mortgage loan sales contracts contain indemnification clauses should the loans default, generally in the first three to nine months, or if documentation is determined not to be in compliance with regulations. The Company’s historic losses as a result of these indemnities have been insignificant.

Loans held for sale totaled $24,289,000, $18,327,000 and $15,130,000 at ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016~~2017, respectively, all of which are valued at the lower of cost or fair value, except for $5,061,000 of the June 30, 2018 amounts, which is valued under the fair value option The change to the fair value option for loans held for sale was done in conjunction with the Company’s move to mandatory delivery in the secondary market and the purchase of forward mortgage-backed securities to manage the changes in fair value (see note 7 for additional information).

These loans, which are sold on a servicing released basis, are valued using a market approach by utilizing either: (i) the fair value of the securities backed by similar mortgage loans, adjusted for certain factors to approximate the fair value of a whole mortgage loan, including the value attributable to mortgage servicing and credit risk, (ii) current commitments to purchase loans or (iii) recent observable market trades for similar loans, adjusted for credit risk and other individual loan characteristics. As these prices are derived from market observable inputs, the Company classifies these valuations as Level 2 in the fair value disclosures (see note 12). Interest income on mortgage loans held for sale is recognized based on the contractual rates and reflected in interest income on loans in the consolidated statements of earnings. The Company has no continuing involvement in any residential mortgage loans sold.

The Company enters into interest rate lock commitments (“IRLCs”) with customers to originate residential mortgage loans at a specific interest rate that are ultimately sold in the secondary market. These commitments, which contain fixed expiration dates, offer the borrower an interest rate guarantee provided the loan meets underwriting guidelines and closes within the timeframe established by the Company.

Beginning in the second quarter of 2018, the Company purchased forward mortgage-backed securities contracts to manage the changes in fair value associated with changes in interest rates related to a portion of the IRLCs. These instruments are typically entered into at the time the IRLC is made.

These financial instruments are not designated as hedging instruments and are used for asset and liability management needs. All derivatives are carried at fair value in either other assets or other liabilities.

The fair values of IRLCs are based on current secondary market prices for underlying loans and estimated servicing value with similar coupons, maturity and credit quality, subject to the anticipated loan funding probability (pull-through rate). The fair value of IRLCs is subject to change primarily due to changes in interest rates and the estimated pull-through rate. These commitments are classified as Level 2 in the fair value disclosures (see note 12), as the valuations are based on observable market inputs.

Forward mortgage-backed securities contracts are exchange-traded or traded within highly active dealer markets. In order to determine the fair value of these instruments, the Company utilizes the exchange price or dealer market price for the particular derivative contract and these instruments are therefore classified as Level 2 in the fair value disclosures (see note 12). The estimated fair values are subject to change primarily due to changes in interest rates.

The following table provides the outstanding notional balances and fair values of outstanding derivative positions (dollars in thousands):


	September 30,				December 31,		June 30,				December 31,
	2017		2016		2016		2018		2017		2017
Securities sold under agreements with customers to repurchase	$	339,660	$	345,559	$	360,820	$	389,010	$	309,524	$	320,450
Federal funds purchased		11,775		8,200		9,950		7,925		19,800		10,550
Advances from Federal Home Loan Bank of Dallas		—		160,000		75,000
Advances from the Federal Home Loan Bank								60,000		50,000		—

Total	$	351,435	$	513,759	$	445,770	$	456,935	$	379,324	$	331,000

Securities sold under repurchase agreements are generally with significant customers of the Company that require short-term liquidity for their funds for which the Company pledges certain securities that have a fair value equal to at least the amount of the borrowings. The agreements mature daily and therefore the risk arising from a decline in the fair value of the collateral pledged is minimal. The securities pledged are mortgage-backed securities. These agreements do not include “right ofset-off” provisions and therefore the Company does not offset such agreements for financial reporting purposes.

Income tax expense was ~~$9,195,000~~$7,217,000 for the ~~third~~second quarter of ~~2017~~2018 as compared to ~~$7,440,000~~$8,500,000 for the same period in ~~2016.~~2017. The Company’s effective tax rates on pretax income were ~~23.84%~~16.09% and ~~22.52%~~23.13% for the ~~third~~second quarters of ~~2017~~2018 and ~~2016,~~2017, respectively. Income tax expense was ~~$25,300,000~~$13,462,000 for the ~~nine~~six months ended ~~September~~June 30, ~~2017~~2018 as compared to ~~$23,544,000~~$16,105,000 for the same period in ~~2016.~~2017. The Company’s effective tax rates on pretax income were ~~23.10%~~15.72% and ~~23.16%~~22.70% for the ~~nine~~six months ended ~~September~~June 2018 and 2017, ~~and 2016,~~ respectively. The effective tax rates differ from the statutory federal tax rate of 21% for 2018 and 35% for 2017 primarily due to tax exempt interest income earned on certain investment securities and loans, the deductibility of dividends paid to our employee stock ownership plan and excess tax benefits related to our directors’ deferred compensation plan.

On December 22, 2017, the Tax Cuts and Jobs Act was signed into law with sweeping modifications to the Internal Revenue Service Code. The primary change for the Company was to lower the corporate income tax rate to 21% from 35%. The Company’s deferred tax assets and liabilities werere-measured based on the income tax rules at which they are expected to reverse in the future, which is now generally 21%. The Company continues to analyze certain aspects of the Act resulting in refinement of the calculations which could potentially affect the measurement of these balances or potentially give rise to new deferred tax amounts. The provisional amount recorded related to there-measurement of the Company’s deferred tax balance was $7,650,000, and was recorded in December 2017 as a reduction of income tax expense. There have been no adjustments to this provisional amount recorded in the three months and six months ended June 30, 2018. In addition, income tax rate changes in deferred tax assets and liabilities totaling $5,759,000 related to amounts recorded in accumulated other comprehensive income were reclassified from accumulated other comprehensive income to retained earnings during the first quarter of 2018.

The Company grants incentive stock options for a fixed number of shares with an exercise price equal to the fair value of the shares at the date of grant to employees. In June 2017, the Company granted 452,450 incentive stock options with an exercise price of $42.35 per share. The fair value of the options was $9.90 per option and was estimated using the Black-Scholes options pricing model with the following weighted average assumptions: risk-free interest rate of 1.89%; expected dividend yield of 1.79%; expected life of 6.24 years; and expected volatility of 26.51%. No options ~~were~~have been granted in ~~2016.~~2018.

The Company recorded stock option expense totaling ~~$750,000~~$377,000 and ~~$221,000~~$217,000 for the three-month periods ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, respectively. The Company recorded stock option expense totaling ~~$1,182,000~~$754,000 and ~~$662,000~~$432,000 for the ~~nine~~six months ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, respectively. The additional disclosure requirements under authoritative accounting guidance have been omitted due to the amounts being insignificant.

~~On July 21, 2015, 7,070 restricted shares were granted to the tennon-employee~~ directors. Total value of these restricted shares totaled $250,000 and was expensed over the period from grant date to April 26, 2016, the annual shareholders’ meeting at which these director’s term expired. On April 26, 2016, uponre-election of existing directors, 7,660 restricted shares with a total value of $250,000 were granted to the tennon-employee directors and was expensed over the period from grant ~~day~~date to April 25, 2017, the ~~annual shareholders’ meeting~~date of the next Annual Shareholders’ Meeting at which these directors’ term expired. On April 25, 2017, uponre-election of existing directors, 14,650 restricted shares with a total value of $600,000 were granted to the tennon-employee directors and ~~is being~~was expensed over the period from the grant date to April 24, 2018, the date of the next Annual Shareholders’ Meeting at which these directors’ term expired. On April 24, 2018, uponre-election of nine of the existing directors, 10,710 restricted shares with a total value of $540,000 were granted to thesenon-employee directors and is being expensed over the period from grant date to April 23, 2019, the Company’s next shareholders’ meeting at which the ~~directors’~~director’s term expires.

The Company recorded director expense related to these restricted share grants of ~~$150,000~~$140,000 and ~~$63,000~~$121,000 for the three-month periods ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, respectively. The Company recorded director expense related to these restricted ~~share~~stock grants of ~~$333,000~~$290,000 and ~~$215,000~~$183,000 for the ~~nine-month periods~~six months period ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, respectively.

On October 27, 2015, the Company granted 31,273 restricted shares with a total value of $1,060,000 to certain officers that is being expensed over the vesting period of three years. On October 25, 2016, the Company granted 15,405 restricted stock shares with a total value of $560,000 to certain officers that is being expensed over the vesting period of three years. The Company recorded restricted stock expense for officers of $133,000 and $88,000, for the three-month periods ended September 30, 2017 and 2016, respectively. The Company recorded restricted share expense for officers of $399,000 and $262,000 for the nine-month periods ended September 30, 2017 and 2016, respectively.

On October 24, 2017, the Company granted 14,191 restricted shares with a total value of $655,000 to certain officers that ~~will be~~is being expensed over the vesting period of one to three years. The Company recorded restricted stock expense for officers of $158,000 and $133,000, for the three-month periods ended June 30, 2018 and 2017, respectively. The Company recorded restricted stock expense for officers of $326,000 and $266,000, for thesix-month periods ended June 30, 2018 and 2017, respectively.

The Company’s defined benefit pension plan was frozen effective January 1, 2004, whereby no new participants will be added to the plan and no additional years of service will accrue to participants, unless the pension plan is reinstated at a future date. The pension plan covered substantially all of the Company’s employees at the time. The benefits for each employee were based on years of service and a percentage of the employee’s qualifying compensation during the final years of employment. The Company’s funding policy was and is to contribute annually the amount necessary to satisfy the Internal Revenue Service’s funding standards. Contributions to the pension plan, prior to freezing the plan, were intended to provide not only for benefits attributed to service to date but also for those expected to be earned in the future. As a result of the Pension Protection Act of 2006 (the “Protection Act”), the Company will be required to contribute amounts in future years to fund any shortfalls. The Company has evaluated the provisions of the Protection Act as well as the Internal Revenue Service’s funding standards to develop a plan for funding in future years. The Company made no contribution in 2017, and has not made a contribution ~~totaling $500,000 in 2016, and has made no contribution~~ through ~~September~~June 30, ~~2017.~~2018.

Net periodic benefit costs totaling ~~$84,000~~$56,000 and ~~$82,000~~$84,000 were recorded for the three months ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, respectively. Net periodic benefit costs totaling ~~$253,000~~$111,000 and ~~$247,000~~$168,000 were recorded for the ~~nine~~six months ended ~~September~~June 30, 2018 and 2017, ~~and 2016,~~ respectively.

The authoritative accounting guidance for fair value measurements defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or most advantageous) market used to measure the fair value of the asset or liability shall not be adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities; it is not a forced transaction. Market participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact, and (iv) willing to transact.

The authoritative accounting guidance requires the use of valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert future amounts, such as cash flows

or earnings, to a single present amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset (replacement costs). Valuation techniques should be consistently applied. Inputs to valuation techniques refer to the assumptions that market participants would use in pricing the asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from independent sources, or unobservable, meaning those that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances. In that regard, the authoritative guidance establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows:

A description of the valuation methodologies used for assets and liabilities measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below.

In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.

Securities classified asavailable-for-sale and trading are reported at fair value utilizing Level 1 and Level 2 inputs. For these securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include market spreads, cash flows, the United States Treasury yield curve, live trading levels, trade execution data, dealer quotes, market consensus prepayments speeds, credit information and the security’s terms and conditions, among other items.

There were no transfers between Level 1 and Level 2 or Level 2 and Level 3 during the ~~three and nine~~six months ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and the year ended December 31, ~~2016.~~2017.

The following table summarizes ~~financial assets and financial liabilities~~the Company’s available-for-sale securities which are measured at fair value on a recurring basis, ~~as of September 30, 2017 and 2016, and December 31, 2016, respectively,~~ segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value (dollars in thousands):

Certain financial assets and financial liabilities are measured at fair value on a ~~nonrecurring~~non-recurring basis, that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment). Financial assets and financial liabilities measured at fair value on anon-recurring basis include the following at ~~September~~June 30, ~~2017:~~2018:

Impaired Loans – Impaired loans are reported at the fair value of the underlying collateral if repayment is expected solely from the collateral less costs to sell. Collateral values are estimated using Level 2 inputs based on observable market data. At ~~September~~June 30, ~~2017,~~2018, impaired loans with a carrying value of ~~$14,129,000~~$26,685,000 were reduced by specific valuation reserves totaling ~~$4,177,000~~$4,823,000 resulting in a net fair value of ~~$9,952,000.~~$21,862,000. The Company also had impaired loans of ~~$4,621,000~~$7,052,000 with no specific valuation reserve at ~~September~~June 30, ~~2017,~~2018, due to the loans carrying value generally being lower than the value of the collateral associated with the loan.

LoansHeld-for-Sale – Loansheld-for-sale are reported at either the fair value option or the lower of cost or fair ~~value. In determining whether the~~value (see note 6).

IRLCs and Forward Mortgage-Backed Securities Trades – IRLCs and forward mortgage-backed securities trades are reported at fair value ~~of loansheld-for-sale~~ is less than cost when quoted market prices are not available, the Company considers investor commitments/contracts. These loans are considered Level 2 of the fair value hierarchy. At September 30, 2017, the Company’s mortgage loans~~held-for-sale~~ ~~were recorded at cost as fair value exceeded cost.~~ (see note 7).

Certainnon-financial assets andnon-financial liabilities measured at fair value on anon-recurring basis include other real estate owned, goodwill and other intangible assets and othernon-financial long-lived assets.Non-financial assets measured at fair value on anon-recurring basis during the three months and ~~nine~~six months ended ~~September~~June 30, ~~2017~~2018 and ~~2016~~2017 include other real estate owned which, subsequent to their initial transfer to other real estate owned from loans, werere-measured at fair value through a write-down included in gain (loss) on sale of foreclosed assets. During the reported periods, all fair value measurements for foreclosed assets utilized Level 2 inputs based on observable market data, generally third-party appraisals, or Level 3 inputs based on customized discounting criteria. These appraisals are evaluated individually and discounted as necessary due to the age of the appraisal, lack of comparable sales, expected holding periods of property or special use type of the property. Such discounts vary by appraisal based on the above factors but generally range from 5% to 25% of the appraised value.Re-evaluation of other real estate owned is performed at least annually as required by regulatory guidelines or more often if particular circumstances arise. The following table presents other real estate owned that werere-measured subsequent to their initial transfer to other real estate owned (dollars in thousands):


	Three Months Ended September 30,					Three Months Ended June 30,
	2017			2016		2018			2017
Carrying value of other real estate owned prior tore-measurement	$	937		$	—	$	526		$	88
Write-downs included in gain (loss) on sale of other real estate owned		(288	)		—		(126	)		(8	)

Fair value	$	649		$	—	$	400		$	80


	Nine Months Ended September 30,					Six Months Ended June 30,
	2017			2016		2018			2017
Carrying value of other real estate owned prior tore-measurement	$	1,025		$	—	$	526		$	88
Write-downs included in gain (loss) on sale of other real estate owned		(296	)		—		(126	)		(8	)

Fair value	$	729		$	—	$	400		$	80

At ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016,~~2017, other real estate owned totaled ~~$2,176,000, $241,000,~~$642,000, $2,023,000 and ~~$413,000,~~$1,347,000, respectively.

The Company is required under current authoritative accounting guidance to disclose the estimated fair value of their financial instrument assets and liabilities including those subject to the requirements discussed above. For the Company, as for most financial institutions, substantially all of its assets and liabilities are considered financial instruments. Many of the Company’s financial instruments, however, lack an available trading market as characterized by a willing buyer and willing seller engaging in an exchange transaction.

The estimated fair value amounts of financial instruments have been determined by the Company using available market information and appropriate valuation methodologies. However, considerable judgment is required to interpret data to develop the estimates of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize in a current market exchange. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.

In addition, reasonable comparability between financial institutions may not be likely due to the wide range of permitted valuation techniques and numerous estimates that must be made given the absence of active secondary markets for many of the financial instruments. This lack of uniform valuation methodologies also introduces a greater degree of subjectivity to these estimated fair values.

Cash and due from banks, federal funds sold, interest-bearing deposits and time deposits in banks and accrued interest receivable and payable are liquid in nature and considered Levels 1 or 2 of the fair value hierarchy.

Financial instruments with stated maturities have been valued using a present value discounted cash flow with a discount rate approximating current market for similar assets and liabilities and are considered Levels 2 and 3 of the fair value hierarchy. Financial instrument liabilities with no stated maturities have an estimated fair value equal to both the amount payable on demand and the carrying value and are considered Level 1 of the fair value hierarchy.

The carrying value and the estimated fair value of the Company’s contractualoff-balance-sheet unfunded lines of credit, loan commitments and letters of credit, which are generally priced at market at the time of funding, are not material.

The estimated fair values and carrying values of all financial instruments under current authoritative guidance, ~~at September 30, 2017 and 2016, and December 31, 2016,~~ were as follows (in thousands):

Accounting Standards Update (“ASU”)2014-09, “Revenue from Contracts with Customers.” ASU2014-09 implements a comprehensive new revenue recognition standard that ~~will supersede~~supersedes substantially all existing revenue recognition guidance. The new standard’s core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity ~~should apply~~applies the following steps: (i) identify the contract(s) with a customer, (ii) identify the performance obligations in the contract, (iii) determine the transaction price, (iv) allocate the transaction price to the performance obligations in the contract and (v) recognize revenue when (or as) the entity satisfies a performance obligation. ASU2015-4 “Revenue from Contracts with Customers – Deferral of the Effective Date” deferred the effective date of ASU2014-09 by one year and as a result, the new standard ~~will be~~became effective in the first quarter of 2018. The Company’s revenue is comprised of net interest income on financial assets and financial liabilities, which is explicitly excluded from the scope of ASU2014-09, andnon-interest income. Based on the Company’s analysis of the effect of the new standard on its recurring revenue streams, the Company ~~does~~did not expect these changes to have a significant impact on the Company’s financial ~~statement. Upon~~statement, and upon adoption in the first quarter of 2018, no ~~significant~~ adjustment to opening retained earnings ~~is expected.~~

~~ASU2014-15,~~ ~~“Presentation of Financial Statements – Going Concern~~~~.” ASU2014-15~~ ~~requires management~~was recorded. See Note 1 for additional information related to evaluate an entity’s ability to continue as a going concern within one year after the date that the financial statements are issued. Management must evaluate whether conditions and events raise substantial doubt about an entity’s ability to continue as a going concern and then whether its plans alleviate that doubt. ASU~~2014-15~~ ~~was effective in 2016 and management has performed and continues to perform such required evaluation and has concluded there are no such conditions or events that raise substantial doubt about~~ the Company’s ~~ability to continue as a going concern.~~

~~ASU2015-01,~~ ~~“Income Statement – Extraordinary~~consideration and ~~Unusual Items~~~~.” ASU2015-01~~ ~~eliminated from U.S. GAAP the concept~~analysis of ~~extraordinary items, which, among other things, required an entity to show the item separately in the income statement, net of tax, after income from continuing operations. The~~this new ~~guidance became effective for the Company beginning January 1, 2016 and did not have a significant impact on the Company’s financial statements.~~standard.

~~ASU2015-05,~~ ~~“Intangibles – Goodwill and Other –Internal-Use~~ ~~Software – Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement~~~~.” ASU2015-05~~ addresses accounting for fees paid by a customer in cloud computing arrangements such as (i) software as a service, (ii) platform as a service, (iii) infrastructure as a service and (iv) other similar hosting arrangements. ASU~~2015-05~~ provides guidance to customers about whether a cloud computing arrangement includes a software license. If a cloud computing arrangement includes a software license, then the customer should account for the software license element of the arrangement consistent with the acquisition of other software licenses. If a cloud computing arrangement does not include a software license, the customer should account for the arrangement as a service contract. ASU~~2015-05~~ ~~became effective on January 1, 2016 and did not have a significant impact on the Company’s financial statements.~~

~~ASU2015-16,~~ ~~“Business Combinations – Simplifying the Accounting Measurement Period Adjustments.~~~~” ASU2015-16~~ amended business combination guidance to require that an acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amounts are determined. The acquirer must record, in the same period’s financial statements, the effect of earnings on changes in depreciation, amortization, or other income effects, if any, as a result of the changes to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. Additionally, the entity is required to present separately on the face of the income statement or disclose in the notes the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. The amended guidance became effective for the Company on January 1, 2016 and did not have a significant impact on the Company’s financial statements.

ASU2016-1, “Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities.” ASU2016-1, among other things, (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment, (iii) eliminates the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet, (iv) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, (v) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments, (vi) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and (vii) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related toavailable-for-sale securities. ASU2016-1 ~~will be~~became effective for the Company on January 1, 2018 and isdid not ~~expected to~~ have a significant impact on the Company’s financial statements.

ASU2016-02, “Leases.” ASU2016-02 will amend current lease accounting to require lessees to recognize (i) a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis, and (ii) aright-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU2016-02 does not significantly change lease accounting requirements applicable to lessors; however, certain changes were made to align, where necessary, lessor accounting with the lessee accounting model. The amended guidance will be effective in the first quarter of 2019 and will require transition using a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The Company continues to evaluate the provision of the new lease standard but, due to the small number and dollar amount of lease agreements presently in effect for the Company, ~~has concluded~~does not expect the new guidance will ~~not~~ have a significant impact on the Company’s financial statements.

ASU2016-09, “Compensation – Stock Compensation: Improvements to Employee Share-Based Payment ~~Accounting.~~Accounting.”ASU2016-09 amends current guidance such that all excess tax benefits and tax deficiencies related to share-based payment awards will be recognized as income tax expense or benefit in the income statement during the period in which they occur. Previously, such amounts were recorded in capital surplus. Additionally, excess tax benefits will be classified along with other income tax cash flows as an operating activity rather than a financing activity, as was previously the case. ASU2016-09 also provides that any entity can make an entity-wide accounting policy election to either estimate the number of awards that are expected to vest, which is the current requirement, or account for forfeitures when they occur. ASU2016-09 became effective January 1, 2017 and did not have a significant impact on the Company’s financial statements.

ASU2016-13, “Financial Instruments – Credit Losses.” ASU2016-13 implements a comprehensive change in estimating the allowances for loan losses from the current model of losses inherent in the loan portfolio to a current expected credit loss model that generally is expected to result in earlier recognition of allowances for losses. Additionally, purchase accounting rules have been modified as well as credit losses onheld-to-maturity debt securities. ASU2016-13 will be effective in the first quarter of 2020. While the Company generally expects that the implementation of ASU2016-13 will increase their allowance for loan losses balance, the Company is continuing to evaluate the potential impact on the Company’s financial statements.

ASU2017-04, “Intangibles – Goodwill and Other.” ASU2017-04 will amend and simplify current goodwill impairment testing to eliminate Step 2 from the current provisions. Under the new guidance, an entity should perform the goodwill impairment test by comparing the fair value of a reporting unit with its carrying value and recognize an impairment charge for the amount by which the carrying amount exceeds the reporting unit’s fair value. An entity still has the option to perform the quantitative assessment for a reporting unit to determine if a quantitative impairment test is necessary. ASU2017-04 will be effective for the Company on January 1, 2020 and is not expected to have a significant impact on the Company’s financial statements.

ASU2017-07, “Compensation – Retirement Benefits, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Post-Retirement Benefit Cost.” ASU2017-17 will require employers that sponsor defined benefit pension plans to present the service cost component of net periodic benefit cost in the same income statement line item as other employee compensation costs arising from services rendered during the period. Other components of the net periodic benefit cost will be presented separately from the service cost component. ASU2017-17 ~~will be~~became effective in 2018 and, as the Company froze its defined benefit pension plan in 2004, there is no service cost component of its net periodic benefit cost and therefore ~~will~~did not have an impact on the Company’s financial statements.

ASU2017-08, “Receivables – Nonrefundable Fees and Other Costs: Premium Amortization on Purchased Callable Debt Securities.”ASU2017-08 addresses the amortization method for all callable bonds purchased at a premium to par. Under the revised guidance, entities will be required to amortize premiums on callable bonds to the earliest call date. ASU2017-08 is effective in 2019 although early adoption is permitted. The Company elected to early adopt ASU2017-08 in the first quarter of 2017. The adoption of this guidance did not have a material impact on the Company’s financial statements.

ASU2018-02, “Income Statement – Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.”ASU2018-02 was issued to address the income tax accounting treatment of the stranded tax effects within other comprehensive income due to the prohibition of backward tracing due to an income tax rate change that was initially recorded in other comprehensive income. This issue came about from the enactment of the Tax Cuts and Jobs Act on December 22, 2017 that changed the Company’s income tax rate from 35% to 21%. The ASU changed current accounting whereby an entity may elect to reclassify the stranded tax effect from accumulated other comprehensive income to retained earnings. The ASU is effective for periods beginning after December 15, 2018 although early adoption was permitted. The Company early adopted ASU2018-02 in the first quarter of 2018 and reclassified its stranded tax debit of $5,759,000 within accumulated other comprehensive income to retained earnings.

On October 12, 2017, ~~the Company announced that it has~~we entered into ~~a definitive~~an agreement and plan of reorganization to acquire Commercial Bancshares, Inc. and its wholly owned bank subsidiary, Commercial State Bank, ~~El Campo, Texas pursuant~~Kingwood, Texas. On January 1, 2018, the transaction was completed. Pursuant to ~~anAgreement and Plan of Reorganization (the “Reorganization Agreement”) dated October 12, 2017, by and among~~ the ~~Company, Kingwood Merger Sub, Inc., a wholly owned subsidiary~~agreement, we issued 1,289,371 shares of the ~~company, and~~Company’s common stock in exchange for all of the outstanding shares of Commercial Bancshares, Inc. ~~for consideration to be paid in shares of Common Stock with an aggregate value of approximately $59,400,000.~~ In addition, Commercial Bancshares, Inc. ~~will make~~made a ~~$15,600,000~~$22,075,000 special dividend to its shareholders prior to closing of the transaction, which ~~may be~~was increased ~~or decreased~~ for the amount by which Commercial Bancshares, Inc.’s consolidated shareholders’ equity as of ~~the closing date exceeds or is less than $42,400,000,~~January 1, 2018 exceeded $42,402,000, after certain adjustments ~~described in~~per the ~~Reorganization Agreement.~~ merger agreement.

At ~~September 30, 2017~~closing, Commercial Bancshares, Inc. was merged into the Company and Commercial State Bank, Kingwood, Texas, ~~had gross loans totaling $263,800,000, total deposits~~was merged into First Financial Bank, National Association, Abilene, Texas, a wholly owned subsidiary of ~~$322,100,000 and total assets~~the Company. The primary purpose of ~~$366,800,000. Pending regulatory and shareholder approval,~~ the acquisition ~~is expected~~was to ~~close~~expand the Company’s market share around Houston. Factors that contributed to a purchase price resulting in goodwill include Commercial State Bank’s record of earnings, strong management and board of directors, strong local economic environment and opportunity for growth. The results of operations from this acquisition are included in the ~~first quarter~~consolidated earnings of the Company commencing January 1, 2018.

The assets acquired and liabilities assumed were recorded on the consolidated balance sheet at estimated fair value on the acquisition date. The acquisition was not considered to be a significant business combination. The following table presents the amounts recorded on the consolidated balance sheet on the acquisition date (dollars in thousands):

Goodwill recorded in the acquisition was accounted for in accordance with the authoritative business combination guidance. Accordingly, goodwill will not be amortized but will be tested for impairment annually. The goodwill recorded is not deductible for federal income tax purposes.

The fair value of total loans acquired was $266,327,000 at acquisition compared to contractual amounts of $271,714,000. The fair value of purchased credit impaired loans at acquisition was $3,013,000 compared to contractual amounts of $3,806,000. Additional purchased credit impaired loan disclosures were omitted due to immateriality. All other acquired loans were considered performing loans.

Commercial State Bank had branches in Kingwood, Fulshear, El Campo and Palacios, all located around Houston, Texas.

~~Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations~~

This Form10-Q contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. When used in this Form10-Q, words such as “anticipate,” “believe,” “estimate,” “expect,” “intend,” “predict,” “project,” and similar expressions, as they relate to us or our management, identify forward-looking statements. These forward-looking statements are based on information currently available to our management. Actual results could differ materially from those contemplated by the forward-looking statements as a result of certain factors, including, but not limited, to those listed in “Item1A- Risk Factors” in our Annual Report on Form10-K and the following:

Such forward-looking statements reflect the current views of our management with respect to future events and are subject to these and other risks, uncertainties and assumptions relating to our operations, results of operations, growth strategy and liquidity. All subsequent written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by this paragraph. We undertake no obligation to publicly update or otherwise revise any forward-looking statements, whether as a result of new information, future events or otherwise (except as required by law).

As a financial holding company, we generate most of our revenue from interest on loans and investments, trust fees, and service charges. Our primary source of funding for our loans and investments are deposits held by our subsidiary, First Financial Bank, National Association, Abilene, Texas. Our largest expense is salaries and related employee benefits. We usually measure our performance by calculating our return on average assets, return on average equity, our regulatory leverage and risk based capital ratios and our efficiency ratio, which is calculated by dividing noninterest expense by the sum of net interest income on a tax equivalent basis and noninterest income.

The following discussion and analysis of operations and financial condition should be read in conjunction with the financial statements and accompanying footnotes included in Item 1 of this Form10-Q as well as those included in the Company’s ~~2016~~2017 Annual Report on Form10-K.

We prepare consolidated financial statements based on GAAP and customary practices in the banking industry. These policies, in certain areas, require us to make significant estimates and assumptions.

We deem a policy critical if (1) the accounting estimate required us to make assumptions about matters that are highly uncertain at the time we make the accounting estimate; and (2) different estimates that reasonably could have been used in the current period, or changes in the accounting estimate that are reasonably likely to occur from period to period, would have a material impact on the financial statements.

We deem our most critical accounting policies to be (1) our allowance for loan losses and our provision for loan losses and (2) our valuation of securities. We have other significant accounting policies and continue to evaluate the materiality of their impact on our consolidated financial statements, but we believe these other policies either do not generally require us to make estimates and judgments that are difficult or subjective, or it is less likely they would have a material impact on our reported results for a given period. A discussion of (1) our allowance for loan losses and our provision for loan losses and (2) our valuation of securities is included in note 5 and note 4, respectively, to our notes to consolidated financial statements (unaudited) which begins on page 9.

Houston and the surrounding ~~areas around the~~ Gulf Coast region were significantly affected by Hurricane Harvey beginning in late August 2017 and continuing into ~~September 2017.~~the fourth quarter of 2017 and first quarter of 2018. Our Company has ~~regional~~ locations (i) north of Houston in Conroe, Willis, Tomball, Huntsville, Montgomery, Magnolia, New Waverly and Cut and Shoot and (ii) in Southeast Texas in Orange, Beaumont, Vidor, Newton, Mauriceville and Port Arthur. We continue to evaluate the effect of the hurricane on our branch facilities and our loan and investment portfolios. Our ~~initial~~ assessment of our physical buildings and equipment ~~indicates~~indicated damage primarily at our Mauriceville branch which has now been remodeled and is fully functional, and amounts not covered by insurance dowere not ~~appear to be~~ significant. At ~~September~~June 30, ~~2017,~~2018, we ~~have~~had loans totaling ~~$448.82~~$458.94 million in our Conroe region and ~~$397.63~~$403.63 million in the Southeast Texas/Orange region. We ~~are evaluating~~continue to evaluate these loans and the related collateral and business operations underlying such loans. At ~~September~~June 30, 2018 and December 31, 2017, we provided additional allowance for loan ~~and lease~~ losses as deemed appropriate based on this analysis. ~~We continue to evaluate these loans and expect some changes, plus or minus, as we learn more information about to the damage caused by the hurricane.~~

Our tax exempt municipal bonds in the counties of Texas effected by the hurricane have also been evaluated, including insurance on the bonds. At ~~September~~June 30, ~~2017,~~2018, our municipal bonds in these counties totaled ~~$254.48~~$429.11 million, but only ~~$9.13~~$87.10 million ~~does~~do not have bond insurance. Based on analysis of these bonds and the related municipality, at ~~September~~June 30, ~~2017,~~2018, we do not believe we have any credit related ~~losses other than temporary impairment.~~losses.

On October 12, 2017, we entered into an agreement and plan of reorganization to acquire Commercial Bancshares, Inc. and its wholly owned bank subsidiary, Commercial State Bank, Kingwood, Texas. On January 1, 2018, the transaction closed. Pursuant to the agreement, we issued 1,289,371 shares of the Company’s common stock in exchange for all of the outstanding shares of Commercial Bancshares, Inc. In addition, in accordance with the plan of reorganization, Commercial Bancshares, Inc. paid a special dividend totaling $22.08 million to its shareholders prior to the closing of this transaction. At the closing, Kingwood Merger Sub., Inc., a wholly-owned subsidiary of the Company, merged into Commercial Bancshares Inc., with Commercial Bancshares, Inc. surviving as a wholly-owned subsidiary of the Company. Immediately following such merger, Commercial Bancshares, Inc. was merged into the Company and Commercial State Bank, Kingwood, Texas was merged into First Financial Bank, National Association, Abilene, Texas, a wholly owned subsidiary of the Company. The total purchase price exceeded the estimated fair value net of assets acquired by approximately $31.24 million and the Company recorded such excess as goodwill. The balance sheet and results of operations of Commercial Bancshares, Inc. have been included in the financial statements of the Company effective January 1, 2018. See note 13 to the consolidated financial statements on page 31 for additional information and disclosure.

Performance Summary. Net earnings for the ~~third~~second quarter of ~~2017~~2018 were ~~$29.37~~$37.63 million, up $9.38 million when compared ~~to $25.60~~with earnings of $28.26 million ~~for the same quarter~~ in ~~2016, or a 14.73% increase.~~

~~Basic earnings per share for the third quarter of 2017 were $0.44 compared to $0.39 for~~ the same quarter last year. Basic earnings per share were $0.56 for the second quarter of 2018 compared with $0.43 in the same quarter a year ago. Contributing to the increase in net earnings and basic earnings per share in the current quarter when compared with the same quarter a year ago was the recent enactment of tax legislation that reduced the corporate income tax rate from 35 percent to 21 percent. Without this tax adjustment, net earnings for the second quarter of 2018 would have been $32.95 million with an adjusted basic earnings per share of $0.49. See note 9 of the consolidated financial statements for additional information.

Also contributing to the increase in net earnings was the Company’s recent acquisition of Commercial Bancshares, Inc. and its wholly owned subsidiary, Commercial State Bank, Kingwood, Texas. See note 14 to the consolidated financial statements for additional information.

The return on average assets was ~~1.65%~~1.98% for the ~~third~~second quarter of ~~2017,~~2018, as compared to ~~1.54%~~1.64% for the ~~third~~second quarter of ~~2016.~~2017. The return on average equity was ~~12.95%~~15.53% for the ~~third~~second quarter of ~~2017~~2018 as compared to ~~11.72%~~12.94% for the ~~third~~second quarter of ~~2016.~~2017.

Net earnings for the ~~nine-month~~six-month period ended ~~September~~June 30, ~~2017~~2018 were ~~$84.23~~$72.15 million compared to ~~$78.11~~$54.85 million for the same period in ~~2016,~~2017, or a ~~7.83%~~31.53% increase.

Basic earnings per share for the first ~~nine~~six months of ~~2017~~2018 were ~~$1.27~~$1.07 compared to ~~$1.18~~$0.83 for the same period in ~~2016.~~ 2017. Contributing to the increase in net earnings and basic earnings per share in thesix-month period when compared with thesix-month period a year ago was the recent enactment of tax legislation that reduced the corporate income tax rate from 35 percent to 21 percent. Without this tax adjustment, net earnings for the first six months of 2018 would have been $63.25 million with an adjusted basic earnings per share of $0.94. See note 9 of the consolidated financial statements for additional information.

The return on average assets was ~~1.62%~~1.91% for the first ~~nine~~six months of ~~2017~~2018, as compared to ~~1.59%~~1.61% for the same period ~~in 2016.~~a year ago. The return on average equity was ~~12.88%~~15.14% for the first ~~nine~~six months of ~~2017,~~2018, as compared to ~~12.33%~~12.84% a year ago.

Net Interest Income. Net interest income is the difference between interest income on earning assets and interest expense on liabilities incurred to fund those assets. Our earning assets consist primarily of loans and investment securities. Our liabilities to fund those assets consist primarily of noninterest-bearing and interest-bearing deposits.

Tax-equivalent net interest income was ~~$66.00~~$69.90 million for the ~~third~~second quarter of ~~2017,~~2018, as compared to ~~$63.00~~$65.59 million for the same period last year. The increase in ~~2017~~2018 compared to ~~2016~~2017 was largely attributable to the increase in interest earning assets, ~~particularly loans and taxable securities.~~primarily from the acquisition of Commercial State Bank. Average earning assets increased ~~$431.96~~$657.32 million for the ~~third~~second quarter of ~~2017~~2018 over the same period in ~~2016.~~2017. Average loans and taxable securities increased ~~$119.07~~$379.24 million and ~~$187.14~~$513.71 million, respectively, for the ~~third~~second quarter of ~~2017~~2018 over the same quarter of ~~2016.Average~~2017.Averagetax-exempt securities decreased $247.00 million for the second quarter of 2018 compared to the same period in 2017, primarily due to the Company’s gradual shift away fromtax-exempt securities due to the change in corporate tax rate to 21% from 35%. Average interest-bearing liabilities increased ~~$222.71~~$334.44 million for the ~~third~~second quarter of ~~2017,~~2018, as compared to the same period in ~~2016.~~2017. The yield on earning assets decreased one basis points and the rate paid on interest-bearing liabilities increased ~~fourteen~~20 basis points for the ~~third~~second quarter of ~~2017~~2018 compared to the ~~third~~second quarter of ~~2016.~~2017.

Tax-equivalent net interest income was ~~$195.16~~$137.82 million for the first ~~nine~~six months of ~~2017,~~2018, as compared to ~~$188.86~~$129.16 million for the same period last year. The increase in ~~2017~~2018 compared to ~~2016~~2017 was largely attributable to the increase in volume of interest earning assets. Average earning assets increased ~~$363.44~~$673.16 million for the first ~~nine~~six months of ~~2017~~2018 over the same period in ~~2016.~~2017, primarily from the acquisition of Commercial State Bank. Average loans and ~~taxable~~tax-exempt securities increased ~~$99.77~~$379.10 million and ~~$125.78~~$486.56 million, respectively, for the first ~~nine~~six months of ~~2017~~2018 over the same period of ~~2016.Average~~2017.Averagetax-exempt securities decreased $212.38 million for the firstsix-month period in 2018 compared to the same period in 2017, primarily due to the Company’s gradual shift away fromtax-exempt securities due to the change in corporate tax rate to 21% from 35%. Average interest-bearing liabilities increased ~~$223.70~~$287.28 million for the first ~~nine~~six months of ~~2017,~~2018, as compared to the same period in ~~2016.~~2017. The yield on earning assets decreased ~~five~~three basis points and the rate paid on interest-bearing liabilities increased ~~eight~~18 basis points for the first ~~nine~~six months of ~~2017~~2018 over the first ~~nine~~six months of ~~2016.~~2017.

Table 1 allocates the change intax-equivalent net interest income between the amount of change attributable to volume and to rate.

Table ~~1 -~~ 1—Changes in Interest Income and Interest Expense (in thousands):


	Three Months Ended September 30, 2017 Compared to Three Months Ended September 30, 2016									Nine Months Ended September 30, 2017 Compared to Nine Months Ended September 30, 2016											Three Months Ended June 30, 2018 Compared to Three Months Ended June 30, 2017											Six Months Ended June 30, 2018 Compared to Six Months Ended June 30, 2017
	Change Attributable to					Total Change				Change Attributable to							Total Change				Change Attributable to							Total Change				Change Attributable to							Total Change
	Volume			Rate					Volume				Rate				Total Change			Volume				Rate				Total Change			Volume				Rate				Total Change
Short-term investments	$	175		$	364	Total Change	$	539			$	312			$	503		$	815			$	31			$	120		$	151			$	86			$	428		$	514
Taxable investment securities		971			328		1,299				2,008				673			2,681				2,869				1,507			4,376				5,363				2,936			8,299
Tax-exempt investment securities (1)		(13	)		356		343				2,139				407			2,546				(2,814	)			(2,599	)		(5,413	)			(4,858	)			(5,557	)		(10,415	)
Loans (1) (2)		1,456			866		2,322				3,672				(687	)		2,985				4,638				2,924			7,562				9,146				5,348			14,494

Interest income		2,589			1,914		4,503				8,131				896			9,027				4,724				1,952			6,676				9,737				3,155			12,892

Interest-bearing deposits		86			1,031		1,117				325				2,226			2,551				139				1,936			2,075				279				3,725			4,004
Short-term borrowings		(20	)		404		384				(176	)			343			167				27				268			295				(12	)			248			236

Interest expense		66			1,435		1,501				149				2,569			2,718				166				2,204			2,370				267				3,973			4,240

Net interest income	$	2,523		$	479	$	3,002			$	7,982			$	(1,673	)	$	6,309			$	4,558			$	(252	)	$	4,306			$	9,470			$	(818	)	$	8,652

The net interest margin for the ~~third~~second quarter of ~~2017 was3.94%~~2018 was3.92%, a decrease of ~~ten~~13 basis points from the same period in ~~2016.~~2017. The ~~continued~~net interest margin for the first six months of 2018 was 3.90%, a decrease of 14 basis points from the same period in 2017. The decrease in our net interest margin in 2018 from 2017 was primarily due to (i) the change in the income tax rate from 35% to 21% from the Tax Cuts and ~~2016 was largely~~Jobs Act and its effect on our tax free municipal bonds and tax free loans and (ii) the result of the extended period of historically low levels of short-term interest ~~rates.~~rates, although rates have begun to increase in the past 18 months. We have been able to somewhat mitigate the impact of lower short-term interest rates by establishing minimum interest rates on certain of our loans, improving the pricing for loan risk, and minimizing rates paid on interest bearing liabilities.

As rates have begun to increase, we are adjusting loan rates, upon maturities and converting to variable rates when we are able. The ~~net interest margin for the nine months ending September 30, 2017 was4.01%, a decrease of nine~~Federal Reserve increased rates 25 basis points ~~from~~in both the ~~same period in 2016. The continued decrease in our net interest margin~~first and second quarters of 2018 and 75 basis points in 2017, and ~~2016 was largely the result of the extended period of historically low levels of short-term interest rates. We have been able~~continues to ~~somewhat mitigate the impact of lower short-term interest~~issue forward guidance plans to increase rates ~~by establishing minimum interest rates on certain of our loans, improving the pricing for loan risk,~~further in 2018 and ~~minimizing rates paid on interest bearing liabilities.~~2019.

The net interest margin, which measurestax-equivalent net interest income as a percentage of average earning assets, is illustrated in Table 2.

Table ~~2 -~~ 2—Average Balances and Average Yields and Rates (in thousands, except percentages):


	Nine Months Ended September 30,																Six Months Ended June 30,
	2017								2016								2018								2017
	Average Balance			Income/ Expense		Yield/ Rate			Average Balance			Income/ Expense		Yield/ Rate			Average Balance			Income/ Expense		Yield/ Rate			Average Balance			Income/ Expense		Yield/ Rate
Assets
Short-term investments (1)	$	129,945		$	1,036		1.07	%	$	54,908		$	221		0.54	%	$	113,817		$	911		1.61	%	$	93,936		$	397		0.85	%
Taxable investment securities (2)		1,451,712			23,848		2.19			1,325,935			21,167		2.13			1,917,671			24,073		2.51			1,431,110			15,774		2.20
Tax-exempt investment securities (2)(3)		1,511,786			51,859		4.57			1,448,933			49,313		4.54			1,316,801			24,560		3.73			1,529,183			34,975		4.57
Loans (3)(4)		3,419,105			125,147		4.89			3,319,337			122,162		4.92			3,773,085			96,371		5.15			3,393,986			81,877		4.86

Total earning assets		6,512,548		$	201,890		4.14	%		6,149,113		$	192,863		4.19	%		7,121,374		$	145,915		4.13	%		6,448,215		$	133,023		4.16	%
Cash and due from banks		159,202								151,485								180,083								159,822
Bank premises and equipment, net		123,110								119,664								127,829								122,887
Other assets		57,191								55,094								61,353								58,086
Goodwill and other intangible assets, net		142,885								144,091								169,884								143,447
Allowance for loan losses		(47,021	)							(44,487	)							(49,793	)							(46,692	)

Total assets	$	6,947,915							$	6,574,960							$	7,610,730							$	6,885,765


Liabilities and Shareholders’ Equity
Interest-bearing deposits	$	3,779,967		$	5,748		0.20	%	$	3,431,572		$	3,197		0.12	%	$	4,107,750		$	7,524		0.37	%	$	3,806,157		$	3,520		0.19	%
Short-term borrowings		448,773			978		0.29			573,464			811		0.19			396,039			576		0.29			410,355			340		0.17

Total interest-bearing liabilities		4,228,740		$	6,726		0.21	%		4,005,036		$	4,008		0.13	%		4,503,789		$	8,100		0.36	%		4,216,512		$	3,860		0.18	%
Noninterest-bearing deposits		1,797,174								1,656,935								2,116,969								1,763,133
Other liabilities		47,720								66,855								28,750								44,763

Total liabilities		6,073,634								5,728,826								6,649,508								6,024,408
Shareholders’ equity		874,281								846,134								961,222								861,357

Total liabilities and shareholders’ equity	$	6,947,915							$	6,574,960							$	7,610,730							$	6,885,765

Net interest income				$	195,164							$	188,855							$	137,815							$	129,163

Rate Analysis:
Interest income/earning assets							4.14	%							4.19	%							4.13	%							4.16	%
Interest expense/earning assets							0.13								0.09								(0.23	)							(0.12	)

Net yield on earning assets							4.01	%							4.10	%
Net interest margin																							3.90	%							4.04	%

Noninterest Income. Noninterest income for the ~~third~~second quarter of ~~2017~~2018 was ~~$24.26~~$25.49 million, an increase of ~~$2.11~~$2.32 million compared to the same period in ~~2016.~~2017. Trust fees increased ~~19.23 percent~~23.02% to ~~$6.04~~$7.07 million in the ~~third~~second quarter of ~~2017~~2018 compared with ~~$5.07~~$5.75 million in the same quarter last year, due to continued growth in the fair value of trust assets managed to ~~$4.92~~$5.40 billion from ~~$4.22~~$4.73 billion a year ~~ago and an increase in Trust fees.~~ago. Service charges on deposit accounts increased ~~5.98 percent~~10.08% to ~~$5.08~~$5.38 million compared with ~~$4.80~~$4.88 million in the same quarter last year due to continued growth in net new accounts. ATM, interchange and credit card fees increased ~~5.67 percent~~6.71% to ~~$6.34~~$7.04 million compared with ~~$6.00~~$6.60 million in the same quarter last year due to continued growth in debit cards. ~~Also included~~Offsetting these increases were decreases in ~~noninterest income during the third quarter of 2017 were~~ gains on the sale of securities of ~~$1.08 million, an increase of $836~~$680 thousand ~~when~~ compared to the same quarter in 2016, and an increase of $629 thousand in other noninterest income when compared to the same period a year ago which largely resulted from a $505 thousand litigation settlement in the third quarter of 2017. ~~Real~~Additionally, real estate mortgage fees decreased in the ~~third~~second quarter of ~~2017~~2018 to ~~$3.89~~$3.95 million compared with ~~$4.70~~$4.19 million in the same quarter a year ago due to a slowdown in refinance activity and ~~interest on loan recoveries decreased $304 thousand~~the sale of the mortgage servicing portfolio in ~~the third quarter of 2017 compared to the same period in 2016.~~July 2017.

Noninterest income for the ~~nine-month~~six-month period ended ~~September~~June 30, ~~2017~~2018 was ~~$68.72~~$49.91 million, an increase of ~~$5.31~~$5.46 million compared to the same period in ~~2016.~~2017. Trust fees increased ~~23.25 percent~~18.79% to ~~$17.80~~$13.98 million in the first ~~nine~~six months of ~~2017~~2018 compared with ~~$14.45~~$11.76 million in the same period in ~~2016~~2017 due primarily to continued growth in the fair value of trust assets managed to ~~$4.92~~$5.40 billion from ~~$4.22~~$4.73 billion a year ago and an increase in ~~Trust fees.~~revenue from oil and gas management. Service charges on deposits increased ~~6.63 percent~~8.76% to ~~$14.52~~

$10.26 million compared with ~~$13.61~~$9.43 million in the same period last year due primarily to the continued growth in net new accounts. ATM, interchange and credit card fees increased ~~9.02 percent~~9.99% to ~~$19.10~~$14.04 million compared with ~~$17.52~~$12.76 million in the same period last year due to continued growth in debit cards. ~~Also included~~Offsetting these increases were decreases in noninterest income for the nine-month period ended September 30, 2017 were gains on the sale of securities of $1.83 million, an increase of $672 thousand when compared to the same period in 2016, and an increase of $524 thousand in other noninterest income when compared to the same period a year ago which largely resulted from a $505 thousand litigation settlement in the third quarter of 2017. Realreal estate mortgage fees ~~and interest on loan recoveries decreased $353~~of $721 thousand ~~and $1.07~~to $6.88 million ~~respectively for the nine-month period ending September 30, 2017 when~~ compared towith $7.61 million in the same period a year ago.

ATM and interchange fees are charges that merchants pay to us and other card-issuing banks for processing electronic payment transactions. ATM and interchange fees consist of income from debit card usage, point of sale income for debit card transactions and ATM service fees. Federal Reserve rules applicable to financial institutions that have assets of $10 billion or more provide that the maximum permissible interchange fee for an electronic debit transaction is the sum of 21 cents per transaction and 5 basis points multiplied by the value of the transaction. While we currently have assets under $10 billion, we are monitoring the effect of this reduction in per transaction fee income as we approach the $10 billion asset level.


	Three Months Ended September 30,									Nine Months Ended September 30,								Three Months Ended June 30,								Six Months Ended June 30,
	2017			Increase (Decrease)			2016			2017			Increase (Decrease)			2016		2018		Increase (Decrease)			2017			2018			Increase (Decrease)			2017
Trust fees	$	6,040		$	974		$	5,066		$	17,804		$	3,358		$	14,446	$	7,070	$	1,323		$	5,747		$	13,975		$	2,211		$	11,764
Service charges on deposit accounts		5,083			287			4,796			14,517			903			13,614		5,375		492			4,883			10,259			826			9,433
ATM, interchange and credit card fees		6,340			340			6,000			19,102			1,581			17,521		7,041		443			6,598			14,037			1,275			12,762
Real estate mortgage operations		3,891			(806	)		4,697			11,496			(353	)		11,849		3,951		(237	)		4,188			6,884			(721	)		7,605
Net gain on sale ofavailable-for-sale securities		1,075			836			239			1,825			672			1,153		67		(680	)		747			1,288			538			750
Net gain (loss) on sale of foreclosed assets		(11	)		(1	)		(10	)		(42	)		(385	)		343		19		91			(72	)		118			149			(31	)
Net gain (loss) on sale of assets		(15	)		153			(168	)		(211	)		(482	)		271		—		200			(200	)		(91	)		105			(196	)
Interest on loan recoveries		405			(304	)		709			896			(1,074	)		1,970		289		(48	)		337			408			(83	)		491
Other:
Check printing fees		40			(11	)		51			121			(16	)		137		54		11			43			96			15			81
Safe deposit rental fees		108			(7	)		115			424			(2	)		426		122		(1	)		123			325			9			316
Credit life fees		156			(83	)		239			439			(29	)		468		391		235			156			488			205			283
Brokerage commissions		323			276			47			908			608			300		444		140			304			863			277			586
Miscellaneous income		825			454			371			1,436			524			912		665		349			316			1,262			651			611

Total other		1,452			629			823			3,328			1,085			2,243		1,676		734			942			3,034			1,157			1,877

Total Noninterest Income	$	24,260		$	2,108		$	22,152		$	68,715		$	5,305		$	63,410	$	25,488	$	2,318		$	23,170		$	49,912		$	5,457		$	44,455

Noninterest Expense. Total noninterest expense for the ~~third~~second quarter of ~~2017~~2018 was ~~$43.96~~$47.15 million, an increase of ~~$1.96~~$3.37 million compared to ~~$42.00~~$43.78 million in the same period of ~~2016.~~2017. An important measure in determining whether a financial institution effectively manages noninterest expense is the efficiency ratio, which is calculated by dividing noninterest expense by the sum of net interest income on atax-equivalent basis and noninterest income. Lower ratios indicate better efficiency since more income is generated with a lower noninterest expense total. Our efficiency ratio for the ~~third~~second quarter of ~~2017~~2018 was ~~48.71%~~49.42%, compared to ~~49.33%~~49.32% for the same period in ~~2016.~~2017.

Salaries and employee benefits for the ~~third~~second quarter of ~~2017~~2018 totaled ~~$24.14~~$26.86 million, an increase of ~~$1.21~~$3.40 million compared to the same period in ~~2016.~~2017. The increase was primarily driven by (i) annual merit based pay increases that were effective March 1, ~~2017~~2018 (ii) an increase in our profit sharing expenses of ~~$353 thousand~~$1.36 million over the same quarter in ~~2016 and~~2017, (iii) an increase in stock option and stock grant expense of ~~$574~~$185 thousand due to the stock option ~~grant~~grants in June ~~2017.~~2017, and (iv) increases in all categories from the acquisition of Commercial State Bank.

All other categories of noninterest expense for the ~~third~~second quarter of ~~2017~~2018 totaled ~~$19.82~~$20.28 million, ~~an increase of $749 thousand~~down slightly when compared to the same quarter in ~~2016. This~~2017. ATM, interchange and credit card fees increased $402 thousand when compared to the same quarter a year ago, due to growth in debit cards issued. Offsetting this increase ~~primarily resulted from increases~~were decreases in legal expenses of $221 thousand, software amortization and expense of $516 thousand, equipment expense of $225 thousand and operational and other losses of ~~$548 thousand due to fraud and weather related losses and software amortization and expense of $252 thousand from thewrite-off~~ ~~of software costs as compared to the same period in 2016.~~$269 thousand.

Total noninterest expense for the first ~~nine~~six months of ~~2017~~2018 was ~~$129.89~~$94.94 million, an increase of ~~$6.05~~$9.02 million, compared to ~~$123.84~~$85.93 million in the same period of ~~2016.~~2017. Our efficiency ratio for the first ~~nine~~six months of ~~2017~~2018 was ~~49.22%~~50.57%, compared to ~~49.09%~~49.49% from the same period in ~~2016.~~2017.

Salaries and employee benefits for the first ~~nine~~six months of ~~2017~~2018 totaled ~~$70.87~~$53.07 million, an increase of ~~$3.20~~$6.34 million compared to the same period in ~~2016.~~2017. The increase was primarily driven by (i) annual pay increases that were effective March 1, ~~2017~~2018, (ii) an increase in our profit sharing expense of $1.54 million over the same period in ~~2016 and~~2017, (iii) an increase in stock option and stock grant expense of ~~$657~~$382 thousand due to the stock option ~~grant~~grants in June ~~2017.~~2017, and (iv) increases in all categories from the acquisition of Commercial State Bank.

All other categories of noninterest expense for the first ~~nine~~six months of ~~2017~~2018 totaled ~~$59.02~~$41.88 million, an increase of approximately ~~$2.85~~$2.68 million, as compared to the same period in ~~2016. The~~2017. Included in noninterest expense in the six month period of 2018 were technology contract termination and conversion related costs totaling $1.55 million related to the Commercial State Bank acquisition. ATM, interchange and credit card fees increased $832 thousand when compared to the same period a year ago, due to growth in debit cards issued. Offsetting this increase ~~primarily resulted from increases~~were decreases in legal expense of $485 thousand, software amortization and expense of $492 thousand and operational and other losses of ~~$1.19 million due to fraud and weather related losses, professional and services fees of $779 thousand and software amortization and expense of $756 thousand from thewrite-off~~ ~~of software costs as compared to the same period in 2016.~~$688 thousand.


	Three Months Ended September 30,							Nine Months Ended September 30,							Three Months Ended June 30,							Six Months Ended June 30,
	2017		Increase (Decrease)			2016		2017		Increase (Decrease)			2016		2018		Increase (Decrease)			2017		2018		Increase (Decrease)			2017
Salaries	$	18,166	$	320		$	17,846	$	54,022	$	1,439		$	52,583	$	19,834	$	1,539		$	18,295	$	39,559	$	3,704		$	35,855
Medical		2,125		(97	)		2,222		6,201		(248	)		6,449		2,091		185			1,906		4,512		437			4,075
Profit sharing		1,091		353			738		3,074		1,181			1,893		2,318		1,361			957		3,526		1,543			1,983
Pension		84		2			82		253		6			247		56		(28	)		84		111		(57	)		168
401(k) match expense		603		12			591		1,829		35			1,794		668		51			617		1,344		118			1,226
Payroll taxes		1,191		48			1,143		3,907		129			3,778		1,360		104			1,256		2,933		214			2,719
Stock option and stock grant expense		883		574			309		1,581		657			924		535		185			350		1,080		382			698

Total salaries and employee benefits		24,143		1,212			22,931		70,867		3,199			67,668		26,862		3,397			23,465		53,065		6,341			46,724

Net occupancy expense		2,711		39			2,672		8,081		195			7,886		2,806		35			2,771		5,689		319			5,370
Equipment expense		3,294		(126	)		3,420		10,397		211			10,186		3,440		(225	)		3,665		6,957		(145	)		7,102
FDIC assessment fees		561		48			513		1,657		(498	)		2,155		632		82			550		1,199		102			1,097
ATM, interchange and credit card expense		2,001		142			1,859		5,517		165			5,352		2,205		402			1,803		4,348		832			3,516
Professional and service fees		2,036		153			1,883		5,878		779			5,099		2,026		1			2,025		4,439		597			3,842
Printing, stationery and supplies		449		(87	)		536		1,423		(81	)		1,504		612		76			536		1,098		124			974
Operational and other losses		1,081		548			533		2,639		1,187			1,452		305		(269	)		574		871		(688	)		1,559
Software amortization and expense																479		(516	)		995		1,003		(492	)		1,495
Amortization of intangible assets		143		(29	)		172		477		(93	)		570		384		219			165		771		438			333

Other:
Data processing fees		349		230			119		896		563			333		461		45			416		592		46			546
Postage		399		(7	)		406		1,232		9			1,223		407		(6	)		413		840		7			833
Advertising		894		(30	)		924		2,649		(6	)		2,655		873		(20	)		893		1,739		(16	)		1,755
Correspondent bank service charges		215		(25	)		240		662		(64	)		726		208		(23	)		231		398		(50	)		448
Telephone		737		(146	)		883		2,303		(185	)		2,488		896		114			782		1,837		270			1,567
Public relations and business development		633		(172	)		805		1,997		(58	)		2,055		703		20			683		1,412		48			1,364
Directors’ fees		387		86			301		1,125		125			1,000		432		28			404		890		152			738
Audit and accounting fees		385		(55	)		440		1,246		(94	)		1,340		470		62			408		914		52			862
Legal fees		331		(148	)		479		1,429		(103	)		1,532		251		(221	)		472		613		(485	)		1,098
Regulatory exam fees		296		15			281		880		32			848		307		15			292		632		48			584
Software amortization and expense		742		252			490		2,237		756			1,481
Travel		276		(56	)		332		892		(46	)		938		374		29			345		765		148			617
Courier expense		237		15			222		657		32			625		205		(10	)		215		425		5			420
Other real estate		14		(20	)		34		102		(74	)		176		46		(19	)		65		86		(2	)		88
Other miscellaneous expense		1,650		122			1,528		4,648		100			4,548		1,760		153			1,607		4,360		1,366			2,994

Total other		7,545		61			7,484		22,955		987			21,968		7,393		167			7,226		15,503		1,589			13,914

Total Noninterest Expense	$	43,964	$	1,961		$	42,003	$	129,891	$	6,051		$	123,840	$	47,144	$	3,369		$	43,775	$	94,943	$	9,017		$	85,926

Loans. Our portfolio is comprised of loans made to businesses, professionals, individuals, and farm and ranch operations located in the primary trade areas served by our subsidiary bank. Real estate loans represent loans primarily for1-4 family residences and commercial real estate. The structure of loans in the real estate mortgage area generally providesre-pricing intervals to minimize the interest rate risk inherent in long-term fixed rate loans. As of ~~September~~June 30, ~~2017,~~2018, total loans held for investment were ~~$3.47~~$3.83 billion, an increase of ~~$114.92~~$345.91 million, as compared to December 31, ~~2016~~2017 balances. As compared to December 31, ~~2016,~~2017, commercial loans increased ~~$537 thousand,~~$90.91 million, agricultural loans decreased ~~$1.02~~$1.96 million, real estate loans increased ~~$107.71~~$264.88 million and consumer loans ~~increased $7.69~~decreased $7.92 million. Loans averaged ~~$3.47~~$3.80 billion during the ~~third~~second quarter of ~~2017,~~2018, an increase of ~~$119.07~~$379.24 million from the prior year ~~third~~second quarter average balances. The increases noted were primarily due to the Commercial State Bank acquisition. Loans averaged ~~$3.42~~$3.77 billion during the ~~nine-month~~six-month period ended ~~September~~June 30, ~~2017,~~2018, an increase of ~~$99.77~~$379.10 million from the prior year ~~nine-month~~six-month average balances. The increase in 2018 over 2017 is primarily a result of the Commercial State Bank acquisition.


	September 30,				December 31,		June 30,				December 31, 2017
	2017		2016		2016		2018		2017		December 31, 2017
Commercial	$	674,947	$	663,581	$	674,410	$	775,010	$	668,049	$	684,099
Agricultural		83,005		84,716		84,021		92,583		77,342		94,543
Real estate		2,297,556		2,191,260		2,189,844		2,567,878		2,271,100		2,302,998
Consumer		416,719		398,236		409,032		396,009		422,861		403,929

Total loansheld-for-investment	$	3,472,227	$	3,337,793	$	3,357,307	$	3,831,480	$	3,439,352	$	3,485,569

At ~~September~~June 30, ~~2017,~~2018, our real estate loans represent approximately ~~66.17%~~67.02% of our loan portfolio and are comprised of (i)1-4 family residence loans of ~~45.83%~~42.99%, (ii) commercial real estate loans of ~~23.91%~~28.14%, generally owner occupied, (iii) other loans, which includes ranches, hospitals and universities, of ~~16.09%~~14.49%, (iv) residential development and construction loans of ~~7.88%~~9.52%, which includes our custom and ~~speculation~~speculative home construction loans and (v) commercial development and construction loans of ~~6.29%~~4.86%.

Loans held for sale, consisting of secondary market mortgage loans, totaled ~~$19.12~~$24.29 million, ~~$31.59~~$18.33 million, and ~~$26.90~~$15.13 million at ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016~~2017, respectively, which are valued using the lower of cost or market ~~method.~~method, except $5.06 million in loans held for sale at June 30, 2018 which were valued using the fair value option.

Asset Quality. Our loan portfolio is subject to periodic reviews by our centralized independent loan review group as well as periodic examinations by bank regulatory agencies. Loans are placed on nonaccrual status when, in the judgment of management, the collectability of principal or interest under the original terms becomes doubtful. Nonaccrual, past due 90 days or more and still accruing, and restructured loans plus foreclosed assets were ~~$22.08~~$28.10 million at ~~September~~June 30, ~~2017,~~2018, as compared to ~~$34.94~~$24.72 million at ~~September~~June 30, ~~2016~~2017 and ~~$29.00~~$20.12 million at December 31, ~~2016.~~2017. As a percent of loans and foreclosed assets, these assets were ~~0.63%~~0.73% at ~~September~~June 30, ~~2017,~~2018, as compared to ~~1.04%~~0.71% at ~~September~~June 30, ~~2016~~2017 and ~~0.86%~~0.57% at December 31, ~~2016.~~2017. As a percent of total assets, these assets were ~~0.31%~~0.37% at ~~September~~June 30, ~~2017,~~2018, as compared to ~~0.52%~~0.36% at ~~September~~June 30, ~~2016~~2017 and ~~0.43%~~0.28% at December 31, ~~2016.~~2017. We believe the level of these assets to be manageable and are not aware of any material classified credits not properly disclosed as nonperforming at ~~September~~June 30, ~~2017.~~2018.

Supplemental Oil and Gas Information. As of ~~September~~June 30, ~~2017,~~2018, the Company’s exposure to the oil and gas industry totaled ~~1.99%~~2.68% of gross loans, or ~~$69.43~~$103.38 million, ~~down $9.05~~up $43.22 million from December 31, ~~2016~~2017year-end levels, and consisted (based on collateral supporting the loan) of (i) development and production loans of ~~2.65%~~0.83%, (ii) oil and gas field servicing loans of ~~6.91%~~45.25%, (iii) real estate loans of ~~40.77%~~41.00%, (iv) accounts receivable and inventory of ~~24.40%~~2.70% and (v) other of ~~25.27%~~10.22%. ~~While the overall state of the Company’s~~The increase in oil and gas ~~portfolio has improved, price fluctuations~~related loans at June 30, 2018 when compared to December 31, 2017 balances primarily resulted from the ~~upper $40 to lower $50 continue to cause stress on several~~Company’s acquisition of ~~our credits.~~Commercial State Bank and new loans made in 2018. The Company instituted additional monitoring procedures for these loans and classified, downgraded andcharged-off loans as appropriate. The following oil and gas information is as of and for the quarters ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016:~~2017:


	September 30,						December 31,			June 30,						December 31,
	2017			2016			2016			2018			2017			2017
Oil and gas related loans	$	69,433		$	86,785		$	78,483		$	103,381		$	70,187		$	60,164
Oil and gas related loans as a % of total loans		1.99	%		2.58	%		2.32	%
Oil and gas related loans as a % of total
loans											2.68	%		2.03	%		1.72	%
Classified oil and gas related loans		21,817		$	31,541		$	32,518		$	5,001		$	24,404		$	20,346
Nonaccrual oil and gas related loans		1,569			5,140			4,092			1,629			2,860			1,414
Net charge-offs for oil and gas related loans for quarter/year then ended		—			104			1,145			—			50			50
Allowance for oil and gas related loans as a % of oil and gas loans		6.03	%		5.60	%		6.28	%		3.48	%		7.24	%		7.90	%

Table 6 -–Non-accrual, Past Due 90 Days or More and Still Accruing, Restructured Loans and Foreclosed Assets (in thousands, except percentages):


	September 30,						December 31,			June 30,						December 31,
	2017			2016			2016			2018			2017			2017
Non-accrual loans*	$	18,750		$	33,712		$	27,371		$	26,685		$	21,489		$	17,670
Loans still accruing and past due 90 days or more		257			107			284			200			314			288
Troubled debt restructured loans**		668			750			701			514			672			627

Nonperforming Loans		19,675			34,569			28,356			27,399			22,475			18,585
Foreclosed assets		2,401			369			644			705			2,245			1,532

Total nonperforming assets	$	22,076		$	34,938		$	29,000		$	28,104		$	24,720		$	20,117

As a % of loans and foreclosed assets		0.63	%		1.04	%		0.86	%		0.73	%		0.71	%		0.57	%
As a % of total assets		0.31	%		0.52	%		0.43	%		0.37	%		0.36	%		0.28	%

* Includes $736 thousand, $1.85 million and $1.26 million of purchased credit impaired loans as of September

We record interest payments received onnon-accrual loans as reductions of principal. Prior to the loans being placed onnon-accrual, we recognized interest income on impaired loans of approximately ~~$790~~$263 thousand for the year ended December 31, ~~2016.~~2017. If interest on these impaired loans had been recognized on a full accrual basis during the year ended December 31, ~~2016,~~2017, such income would have approximated ~~$2.90~~$2.15 million. Such amounts for the ~~2017~~2018 and ~~2016~~2017 interim periods were not significant.

Provision and Allowance for Loan Losses. The allowance for loan losses is the amount we determine as of a specific date to be appropriate to absorb probable losses on existing loans in which full collectability is unlikely based on our review and evaluation of the loan portfolio. For a discussion of our methodology, see note 5 to our notes to the consolidated financial statements (unaudited). The provision for loan losses was ~~$1.42~~$1.11 million for the ~~third~~second quarter of ~~2017,~~2018, as compared to ~~$3.83~~$1.73 million for the ~~third~~second quarter of ~~2016.~~2017. The provision for loan losses was ~~$5.09~~$2.42 million for the ~~nine-month~~six-month period ended ~~2017~~June 30, 2018 as compared to ~~$8.22~~$3.68 million for the same period in ~~2016.~~2017. The continued provision for loan losses in 2018 and 2017 ~~and 2016~~ reflects primarily the growth in the loan portfolio, ~~the continued levels of gross charge-offs~~ and the ~~effects related~~decrease in provision is due to ~~Hurricane Harvey on the loan portfolio.~~continued improvement in overall credit metrics. As a percent of average loans, net loan charge-offs were ~~0.10%~~0.07% for the ~~third~~second quarter of ~~2017,~~2018, as compared to ~~0.43%~~0.06% for the ~~third~~second quarter of ~~2016.~~2017. As a ~~percent~~percentage of average loans, net loan charge-offs were 0.03% for the first six months of 2018, as compared to 0.12% for the first ~~nine~~six months of ~~2017, as compared to 0.19% for the first nine months of 2016.~~2017. The allowance for loan losses as a percent of loans was 1.30% as of June 30, 2018, as compared to 1.37% as of ~~September~~June 30, 2017 ~~as compared to 1.34% as of September 30, 2016~~ and ~~1.35%~~1.38% as of December 31, ~~2016.~~2017. Included in Table 7 is further analysis of our allowance for loan losses.

Table ~~7 -~~ 7—Loan Loss Experience and Allowance for Loan Losses (in thousands, except percentages):


	Three Months Ended September 30,						Nine Months Ended September 30,						Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016			2018			2017			2018			2017
Allowance for loan losses atperiod-end	$	47,922		$	45,298		$	47,922		$	45,298		$	49,951		$	47,410		$	49,951		$	47,410
Loans held for investment atperiod-end		3,472,227			3,337,793			3,472,227			3,337,793			3,831,480			3,439,352			3,831,480			3,439,352
Average loans for period	$	3,468,524		$	3,349,458		$	3,419,105		$	3,319,337			3,797,341			3,418,105			3,773,085			3,393,986
Net charge-offs/average loans (annualized)		0.10	%		0.43	%		0.12	%		0.19	%		0.07	%		0.06	%		0.03	%		0.12	%
Allowance for loanlosses/period-end loans		1.37	%		1.34	%		1.37	%		1.34	%		1.30	%		1.37	%		1.30	%		1.37	%
Allowance for loanlosses/non-accrual loans, past due 90 days still accruing and restructured loans		243.57	%		131.04	%		243.57	%		131.04	%		182.31	%		210.95	%		182.31	%		210.95	%

Interest-Bearing Deposits in Banks. At ~~September~~June 30, ~~2017,~~2018, our interest-bearing deposits in banks were ~~$168.28~~$100.96 million compared to ~~$119.04~~$54.79 million at ~~September~~June 30, ~~2016~~2017 and ~~$50.28~~$164.22 million at December 31, ~~2016,~~2017, respectively. At ~~September~~June 30, ~~2017,~~2018, interest-bearing deposits in banks included $1.46 million invested in FDIC-insured certificates of deposit, ~~$166.26~~$99.22 million maintained at the Federal Reserve Bank of Dallas and ~~$556~~$281 thousand on deposit with the Federal Home Loan Bank of Dallas (“FHLB”).

Available-for-Sale andHeld-to-Maturity Securities. At ~~September~~June 30, ~~2017,~~2018, securities with a fair value of ~~$2.89~~$3.20 billion were classified as securitiesavailable-for-sale. As compared to December 31, ~~2016,~~2017, theavailable-for-sale portfolio at ~~September~~June 30, ~~2017reflected~~2018reflected (i) ~~a decrease of $10.67 million~~an increase in U.S. Treasury securities of $9.97 million, (ii) a decrease of ~~$40.12~~$60.03 million in obligations of U.S. government sponsored enterprises and agencies, (iii) a decrease of ~~$130.08~~$136.08 million in obligations of states and political subdivisions, (iv) a decrease of ~~$32.84~~$6.68 million in corporate bonds and other, and (v) an increase of ~~$238.35~~$302.91 million in mortgage-backed securities. Our mortgage related securities are backed by GNMA, FNMA or FHLMC or are collateralized by securities backed by these agencies.

See note 4 to the consolidated financial statements (unaudited) for additional disclosures relating to the investment portfolio at ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016.~~2017.

Table ~~8 -~~ 8—Maturities and Yields ofAvailable-for-Sale Securities Held at ~~September~~June 30, ~~2017~~2018 (in thousands, except percentages):


	Maturing																									Maturing
	One Year or Less					After One Year Through Five Years					After Five Years Through Ten Years					After Ten Years					Total					One Year or Less					After One Year Through Five Years					After Five Years Through Ten Years					After Ten Years					Total
Available-for-Sale:	Amount		Yield			Amount		Yield			Amount		Yield			Amount		Yield			Amount		Yield			Amount		Yield			Amount		Yield			Amount		Yield			Amount		Yield			Amount		Yield
U.S. Treasury securities																										$	—		—	%	$	9,965		2.52	%	$	—		—	%	$	—		—	%	$	9,965		2.52	%
Obligations of U.S. government sponsored enterprises and agencies	$	33,038		1.16	%	$	40,550		1.47	%	$	—		—	%	$	—		—	%	$	73,588		1.33	%		303		1.83			—		—			—		—			—		—			303		1.83
Obligations of states and political subdivisions		136,783		5.02			638,745		5.14			656,623		4.73			2,043		6.86			1,434,194		4.94			179,804		4.57			616,069		4.10			486,921		3.95			1,981		5.65			1,284,775		4.11
Corporate bonds and other securities		19,315		2.72			240		1.15			—		—			—		—			19,555		2.70			4,564		2.13			218		2.65			—		—			—		—			4,782		2.15
Mortgage-backed securities		18,469		2.31			1,062,189		2.24			227,721		2.64			49,767		2.80			1,358,146		2.33			43,773		1.57			1,085,291		2.36			768,678		2.96			—		—			1,897,742		2.59

Total	$	207,605		3.95	%	$	1,741,724		3.28	%	$	884,344		4.19	%	$	51,810		2.96	%	$	2,885,483		3.60	%	$	228,444		3.94	%	$	1,711,543		2.99	%	$	1,255,599		3.34	%	$	1,981		5.65	%	$	3,197,567		3.20	%

Amounts forheld-to-maturity securities at June 30, 2017 are not included herein due to insignificance.

All yields are computed on atax-equivalent basis assuming a marginal tax rate of ~~35%~~21%. Yields onavailable-for-sale securities are based on amortized cost. Maturities of mortgage-backed securities are based on contractual maturities and could differ due to prepayments of underlying mortgages. Maturities of other securities are reported at the earlier of maturity date or call date.

As of ~~September~~June 30, ~~2017,~~2018, the investment portfolio had an overall tax equivalent yield of ~~3.60%~~3.20%, a weighted average life of ~~4.18~~4.21 years and modified duration of ~~3.74~~3.75 years.

Deposits. Deposits held by our subsidiary bank represent our primary source of funding. Total deposits were ~~$5.70~~$6.21 billion as of ~~September~~June 30, ~~2017,~~2018, as compared to ~~$5.24~~$5.63 billion as of ~~September~~June 30, ~~2016~~2017 and ~~$5.48~~$5.96 billion as of December 31, ~~2016.~~2017. The increase in deposits at June 30, 2018 was due primarily to the Commercial State Bank acquisition. Table 9 provides a breakdown of average deposits and rates paid for the three and ~~nine~~six months periods ended ~~September~~June 30, ~~2017~~2018 and ~~2016.~~2017.

Table ~~9 -~~ 9—Composition of Average Deposits (in thousands, except percentages):


	Three Months Ended September 30,										Three Months Ended June 30,
	2017					2016					2018					2017
	Average Balance		Average Rate			Average Balance		Average Rate			Average Balance		Average Rate			Average Balance			Average Rate
Noninterest-bearing deposits	$	1,864,144		—	%	$	1,663,460		—	%	$	2,121,902		—	%	$	1,816,380			—	%
Interest-bearing deposits:																		��
Interest-bearing checking		1,878,400		0.31			1,688,540		0.11			2,059,587		0.54			1,889,467			0.24
Savings and money market accounts		1,378,258		0.14			1,230,111		0.09			1,536,899		0.23			1,426,998			0.13
Time deposits under $100,000		208,848		0.17			233,443		0.18			207,518		0.19			215,112			0.17
Time deposits of $100,000 or more		262,936		0.32			308,114		0.32			272,518		0.40			271,835			0.32

Total interest-bearing deposits		3,728,442		0.24	%		3,460,208		0.13	%		4,076,522		0.39	%		3,803,412			0.20	%

Total average deposits	$	5,592,586				$	5,123,668				$	6,198,424				$	5,619,792


	Nine Months Ended September 30,										Six Months Ended June 30,
	2017					2016					2018					2017
	Average Balance		Average Rate			Average Balance		Average Rate			Average Balance		Average Rate			Average Balance		Average Rate
Noninterest-bearing deposits	$	1,797,174		—	%	$	1,656,935		—	%	$	2,116,969		—	%	$	1,763,133		—	%

Interest-bearing deposits:
Interest-bearing checking		1,882,295		0.25			1,712,095		0.11			2,093,746		0.50			1,884,274		0.21
Savings and money market accounts		1,410,824		0.13			1,146,368		0.07			1,534,025		0.21			1,427,377		0.13
Time deposits under $100,000		214,653		0.17			241,031		0.18			211,319		0.19			217,604		0.17
Time deposits of $100,000 or more		272,195		0.32			332,078		0.31			268,660		0.38			276,902		0.31

Total interest-bearing deposits		3,779,967		0.20			3,431,572		0.12	%		4,107,750		0.37	%		3,806,157		0.19	%

Total average deposits	$	5,577,141				$	5,088,507				$	6,224,719				$	5,569,290

Borrowings.Included in borrowings were federal funds purchased, securities sold under repurchase agreements and advances from the FHLB of ~~$351.44~~$456.94 million, ~~$513.76~~$379.32 million and ~~$445.77~~$331.00 million at ~~September~~June 30, ~~2017~~2018 and ~~2016~~2017 and December 31, ~~2016,~~2017, respectively. Securities sold under repurchase agreements are generally with significant customers of the Company that require short-term liquidity for their funds for which we pledge certain securities that have a fair value equal to at least the amount of the borrowings. The average balance of federal funds purchased, securities sold under repurchase agreements and advances from the FHLB were ~~$524.36~~$434.24 million and ~~$569.88~~$372.91 million in the ~~third~~second quarter of ~~2017~~2018 and ~~2016,~~2017, respectively. The weighted average interest rates paid on these borrowings were ~~0.48%~~0.43% and 0.18% for the ~~third~~second quarters of ~~2017~~2018 and ~~2016,~~2017, respectively. The average balances of federal funds purchased, securities sold under repurchase agreements and advances from the FHLB was ~~$448.77~~$396.04 million and ~~$573.46~~$410.36 million for the ~~nine-month~~six-month periods ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, respectively. The weighted average interest rate paid on these short-term borrowings was 0.29% and ~~0.19%~~0.17% for the first ~~nine~~six months of ~~2017~~2018 and ~~2016,~~2017, respectively.

We evaluate capital resources by our ability to maintain adequate regulatory capital ratios to do business in the banking industry. Issues related to capital resources arise primarily when we are growing at an accelerated rate but not retaining a significant amount of our profits or when we experience significant asset quality deterioration.

Total shareholders’ equity was ~~$906.56~~$985.63 million, or ~~12.93%~~12.82% of total assets at ~~September~~June 30, ~~2017,~~2018, as compared to ~~$867.94~~$887.44 million, or ~~12.98%~~12.77% of total assets at ~~September~~June 30, ~~2016~~2017 and ~~$837.89~~$922.77 million, or ~~12.30%~~12.72% of total assets at December 31, ~~2016.~~2017. Included in shareholders’ equity at ~~September~~June 30, ~~2017~~2018 and ~~2016~~2017 and December 31, ~~2016,~~2017, were ~~$38.95~~($8.52) million, ~~$68.31~~$38.52 million and ~~$21.49~~$35.43 million, respectively, in unrealized gains (losses) on investment securitiesavailable-for-sale, net of related income taxes. For the ~~third~~second quarter of ~~2017,~~2018, total shareholders’ equity averaged ~~$899.71~~$972.27 million, or 12.73% of average assets, as compared to ~~$869.24~~$875.65 million, or ~~13.10%~~12.65% of average assets, during the same period in ~~2016.~~2017. For the ~~nine~~six months ended ~~September~~June 30, ~~2017,~~2018, total shareholders’ equity averaged ~~$874.28~~$961.22 million or ~~12.58%~~12.63%, as compared to ~~$846.13~~$861.36 million, or ~~12.87%~~12.51% of total assets during the same period in ~~2016.~~2017.

Banking regulators measure capital adequacy by means of the risk-based capital ratios and the leverage ratio under the Basel III regulatory capital framework and prompt corrective action regulations. The risk-based capital rules provide for the weighting of assets andoff-balance-sheet commitments and contingencies according to prescribed risk categories. Regulatory capital is then divided by risk-weighted assets to determine the risk-adjusted capital ratios. The leverage ratio is computed by dividing shareholders’ equity less intangible assets byquarter-to-date average assets less intangible assets.

Beginning in January 2016, under the Basel III regulatory capital framework, the implementation of the capital conservation buffer was effective for the Company starting at the 0.625% level and increasing 0.625% each year thereafter, until it reaches 2.5% on January 1, 2019. The capital conservation buffer is designed to absorb losses during periods of economic stress and requires increased capital levels for the purpose of capital distributions and other payments. Failure to meet the amount of the buffer will result in restrictions on the Company’s ability to make capital distributions, including dividend payments and stock repurchases, and to pay discretionary bonuses to executive officers.

As of ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016,~~2017, we had a total capital to risk-weighted assets ratio of ~~19.54%~~19.81%, ~~18.28%~~18.97% and ~~18.45%~~19.85%, a Tier 1 capital to risk-weighted assets ratio of ~~18.35%~~18.68%, ~~17.12%~~17.79% and ~~17.30%~~18.66%; a common equity Tier 1 to risk-weighted assets ratio of ~~18.35%~~18.68%, ~~17.12%~~17.79% and ~~17.30%~~18.66% and a leverage ratio of ~~10.84%~~11.14%, ~~10.60%~~10.79% and ~~10.71%~~11.09%, respectively. The regulatory capital ratios as of ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, and December 31, ~~2016~~2017 were calculated under Basel III rules. There is no threshold for well-capitalized status for bank holding companies.

~~As of September 30, 2017 and 2016, and December 31, 2016, the~~The regulatory capital ratios of the Company and Bank under the Basel III regulatory capital framework are as follows:


	Actual					Minimum Capital Required Under Basel IIIPhase-In					Minimum Capital Required-Basel III FullyPhased-In					Required to be Considered Well- Capitalized					Actual					Minimum Capital Required Under Basel IIIPhase-In					Minimum Capital Required-Basel III FullyPhased-In					Required to be Considered Well- Capitalized
As of September 30, 2017:	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
As of June 30,2018:																					Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
Total Capital to Risk-Weighted Assets:
Consolidated	$	794,388		19.54	%	$	376,053		9.25	%	$	426,872		10.50	%		—		N/A		$	884,279		19.81	%	$	440,691		9.875	%	$	468,583		10.50	%		—		N/A
First Financial Bank, N.A	$	693,155		17.10	%	$	375,032		9.25	%	$	425,712		10.50	%	$	405,440		10.00	%	$	813,002		18.27	%	$	439,561		9.875	%	$	467,349		10.50	%	$	445,095		10.00	%

Tier 1 Capital to Risk-Weighted Assets:
Consolidated	$	745,856		18.35	%	$	294,745		7.25	%	$	345,563		8.50	%		—		N/A		$	833,669		18.68	%	$	351,437		7.875	%	$	379,329		8.50	%		—		N/A
First Financial Bank, N.A	$	644,623		15.90	%	$	293,944		7.25	%	$	344,624		8.50	%	$	324,352		8.00	%	$	762,393		17.13	%	$	350,512		7.875	%	$	378,330		8.50	%	$	356,076		8.00	%

Common Equity Tier 1 Capital to Risk-Weighted Assets:
Consolidated	$	745,856		18.35	%	$	233,763		5.75	%	$	284,581		7.00	%		—		N/A		$	833,669		18.68	%	$	284,497		6.375	%	$	312,389		7.00	%		—		N/A
First Financial Bank, N.A	$	644,623		15.90	%	$	233,128		5.75	%	$	283,808		7.00	%	$	263,536		6.50	%	$	762,393		17.13	%	$	283,748		6.375	%	$	311,566		7.00	%	$	289,311		6.50	%

Leverage Ratio:
Consolidated	$	745,856		10.84	%	$	275,265		4.00	%	$	275,265		4.00	%		—		N/A		$	833,669		11.14	%	$	299,364		4.00	%	$	299,364		4.00	%		—		N/A
First Financial Bank, N.A	$	644,623		9.40	%	$	274,314		4.00	%	$	274,314		4.00	%	$	342,893		5.00	%	$	762,393		10.23	%	$	298,235		4.00	%	$	298,235		4.00	%	$	372,794		5.00	%


	Actual					Minimum Capital Required Under Basel IIIPhase-In					Minimum Capital Required-Basel III FullyPhased-In					Required to be Considered Well- Capitalized					Actual					Minimum Capital Required Under Basel IIIPhase-In					Minimum Capital Required-Basel III FullyPhased-In					Required to be Considered Well- Capitalized
As of September 30, 2016:	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
Total Capital to Risk-Weighted Assets
Consolidated	$	723,248		18.28	%	$	341,309		8.625	%	$	415,506		10.50	%		—		N/A
First Financial Bank, N.A	$	629,168		15.94	%	$	340,429		8.625	%	$	414,436		10.50	%	$	394,701		10.00	%

Tier 1 Capital to Risk-Weighted Assets
Consolidated	$	677,289		17.12	%	$	262,165		6.625	%	$	336,362		8.50	%		—		N/A
First Financial Bank, N.A	$	583,209		14.78	%	$	261,489		6.625	%	$	335,496		8.50	%	$	315,760		8.00	%

Common Equity Tier 1 Capital to Risk-Weighted Assets
Consolidated	$	677,289		17.12	%	$	202,807		5.125	%	$	277,004		7.00	%		—		N/A
First Financial Bank, N.A	$	583,209		14.78	%	$	202,284		5.125	%	$	276,290		7.00	%	$	256,555		6.50	%

Leverage Ratio
Consolidated	$	677,289		10.60	%	$	255,659		4.00	%	$	255,659		4.00	%		—		N/A
First Financial Bank, N.A	$	583,209		9.16	%	$	254,799		4.00	%	$	254,799		4.00	%	$	318,499		5.00	%

As of December 31, 2016:
As of June 30, 2017:																					Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
Total Capital to Risk-Weighted Assets:
Consolidated	$	739,959		18.45	%	$	345,827		8.625	%	$	421,007		10.50	%		—		N/A		$	774,723		18.97	%	$	377,756		9.25	%	$	428,804		10.50	%		—		N/A
First Financial Bank, N.A	$	633,403		15.84	%	$	344,930		8.625	%	$	419,915		10.50	%	$	399,919		10.00	%	$	663,876		16.30	%	$	376,798		9.25	%	$	427,717		10.50	%	$	407,349		10.00	%

Tier 1 Capital to Risk-Weighted Assets:
Consolidated	$	693,584		17.30	%	$	265,635		6.625	%	$	340,815		8.50	%		—		N/A		$	726,705		17.79	%	$	296,079		7.25	%	$	347,127		8.50	%		—		N/A
First Financial Bank, N.A	$	587,028		14.68	%	$	264,946		6.625	%	$	339,931		8.50	%	$	319,935		8.00	%	$	615,858		15.12	%	$	295,328		7.25	%	$	346,247		8.50	%	$	325,879		8.00	%

Common Equity Tier 1 Capital to Risk-Weighted Assets:
Consolidated	$	693,584		17.30	%	$	205,491		5.125	%	$	280,671		7.00	%		—		N/A		$	726,705		17.79	%	$	234,821		5.75	%	$	285,869		7.00	%		—		N/A
First Financial Bank, N.A	$	587,028		14.68	%	$	204,959		5.125	%	$	279,943		7.00	%	$	259,947		6.50	%	$	615,858		15.12	%	$	234,226		5.75	%	$	285,144		7.00	%	$	264,777		6.50	%

Leverage Ratio:
Consolidated	$	693,584		10.71	%	$	258,978		4.00	%	$	258,978		4.00	%		—		N/A		$	726,705		10.79	%	$	269,410		4.00	%	$	269,410		4.00	%		—		N/A
First Financial Bank, N.A	$	587,028		9.10	%	$	257,941		4.00	%	$	257,941		4.00	%	$	322,426		5.00	%	$	615,858		9.17	%	$	268,499		4.00	%	$	268,499		4.00	%	$	335,623		5.00	%

We have performed a preliminary assessment using the regulatory capital estimation tool made available by the OCC and believe the Company and Bank are prepared to meet the new requirements upon full adoption of Basel III that will be effective December 31, 2019.

In connection with the adoption of the Basel III regulatory capital framework, our subsidiary bank made the election to continue to exclude most accumulated other comprehensive income (“AOCI”) from capital in connection with its quarterly financial filing and, in effect, to retain the AOCI treatment under the prior capital rules.

Interest rate risk results when the maturity or repricing intervals of interest-earning assets and interest-bearing liabilities are different. Our exposure to interest rate risk is managed primarily through our strategy of selecting the types and terms of interest-earning assets and interest-bearing liabilities that generate favorable earnings while limiting the potential negative effects of changes in market interest rates. We use nooff-balance sheet financial instruments to manage interest rate risk.

Our subsidiary bank has an asset liability management committee that monitors interest rate risk and compliance with investment policies. The subsidiary bank utilizes an earnings simulation model as the

primary quantitative tool in measuring the amount of interest rate risk associated with changing market rates. The model quantifies the effects of various interest rate scenarios on projected net interest income and net income over the next twelve months. The model measures the impact on net interest income relative to a base case scenario of hypothetical fluctuations in interest rates over the next twelve months. These simulations incorporate assumptions regarding balance sheet growth and mix, pricing and there-pricing and maturity characteristics of the existing and projected balance sheet.

As of ~~September~~June 30, ~~2017,~~2018, the model simulations projected that 100 and 200 basis point increases in interest rates would result in ~~negative~~positive variances in net interest income of ~~0.80%~~0.36% and ~~2.33%~~0.34%, respectively, relative to the current financial statement structure over the next twelve months, while a decrease in interest rates of 100 basis points would result in a negative variance in net interest income of ~~3.89%~~3.41% relative to the current financial statement structure over the next twelve months. We consider the likelihood of a decrease in interest rates beyond 100 basis points as of ~~September~~June 30, ~~2017~~2018 remote given the Federal Reserves proposed rate increase. Our model simulation as of ~~September~~June 30, ~~2017~~2018 indicates that our balance sheet is more liability sensitive in the short-term categories. These are good faith estimates and assume that the composition of our interest sensitive assets and liabilities existing at eachyear-end will remain constant over the relevant twelve-month measurement period and that changes in market interest rates are instantaneous and sustained across the yield curve regardless of duration of pricing characteristics on specific assets or liabilities. Also, this analysis does not contemplate any actions that we might undertake in response to changes in market interest rates. We believe these estimates are not necessarily indicative of what actually could occur in the event of immediate interest rate increases or decreases of this magnitude. As interest-bearing assets and liabilitiesre-price in different time frames and proportions to market interest rate movements, various assumptions must be made based on historical relationships of these variables in reaching any conclusion. Since these correlations are based on competitive and market conditions, we anticipate that our future results will likely be different from the foregoing estimates, and such differences could be material.

Should we be unable to maintain a reasonable balance of maturities and repricing of our interest-earning assets and our interest-bearing liabilities, we could be required to dispose of our assets in an unfavorable manner or pay a higher than market rate to fund our activities. Our asset liability committee oversees and monitors this risk.

Liquidity is our ability to meet cash demands as they arise. Such needs can develop from loan demand, deposit withdrawals or acquisition opportunities. Potential obligations resulting from the issuance of standby letters of credit and commitments to fund future borrowings to our loan customers are other factors affecting our liquidity needs. Many of these obligations and commitments are expected to expire without being drawn upon; therefore the total commitment amounts do not necessarily represent future cash requirements affecting our liquidity position. The potential need for liquidity arising from these types of financial instruments is represented by the contractual notional amount of the instrument. Asset liquidity is provided by cash and assets which are readily marketable or which will mature in the near future. Liquid assets include cash, federal funds sold, and short-term investments in time deposits in banks. Liquidity is also provided by access to funding sources, which include core depositors and correspondent banks that maintain accounts with and sell federal funds to our subsidiary bank. Other sources of funds include our ability to borrow from short-term sources, such as purchasing federal funds from correspondent banks, sales of securities under agreements to repurchase and advances from the FHLB (see below) and an unfunded $25.00 million revolving line of credit established with Frost Bank, a nonaffiliated bank, which matures in June 2019 (see next paragraph).Our subsidiary bank also has federal funds purchased lines of credit with twonon-affiliated banks totaling $130.00 million. At ~~September~~June 30, ~~2017,~~2018, no amounts were drawn on these lines of credit. Our subsidiary bank also has available a line of credit with the FHLB totaling ~~$1.18~~$1.14 billion, at ~~September~~June 30, ~~2017,~~2018, secured by portions of our loan portfolio and certain investment securities. At ~~September~~June 30, ~~2017,~~2018, the Company ~~did not have any balances~~had advances totaling $60 million outstanding and had $1.50 million in letters of credit outstanding under this line of credit.

The Company renewed its loan agreement, effective June 30, 2017, with Frost Bank. Under the loan agreement, as renewed and amended, we are permitted to draw up to $25.00 million on a revolving line of credit. Prior to June 30, 2019, interest is paid quarterly atThe Wall Street Journal Prime Rate and the line of credit matures June 30, 2019. If a balance exists at June 30, 2019, the principal balance converts to a term facility payable quarterly over five years and interest is paid quarterly at our election atThe Wall Street Journal Prime Rate plus 50 basis points or LIBOR plus 250 basis points. The line of credit is unsecured. Among other provisions in the credit agreement, we must satisfy certain financial covenants during the term of the loan agreement, including, without limitation, covenants that require us to maintain certain capital, tangible net worth, loan loss reserve,non-performing asset and cash flow coverage ratios. In addition, the credit agreement contains certain operational covenants, which among others, restricts the payment of dividends above 55% of consolidated net income, limits the incurrence of debt (excluding any amounts acquired in an acquisition) and prohibits the disposal of assets except in the ordinary course of business. Since 1995, we have historically declared dividends as a percentage of our consolidated net income in a range of 37% (low) in 1995 to 53% (high) in 2003 and 2006. The Company was in compliance with the financial and operational covenants at ~~September~~June 30, ~~2017.~~2018. There was no outstanding balance under the line of credit as of ~~September~~June 30, ~~2017~~2018 or December 31, ~~2016.~~2017.

In addition, we anticipate that future acquisitions of financial institutions, expansion of branch locations or offerings of new products could also place a demand on our cash resources. Available cash and cash equivalents at our parent company which totaled ~~$72.19~~$56.60 million at ~~September~~June 30, ~~2017,~~2018, investment securities which totaled ~~$8.58~~$8.31 million at ~~September~~June 30, ~~2017~~2018 and mature over 65 to 1312 years, available dividends from our subsidiaries which totaled ~~$170.03~~$223.17 million at ~~September~~June 30, ~~2017,~~2018, utilization of available lines of credit, and future debt or equity offerings are expected to be the source of funding for these potential acquisitions or expansions.

Our liquidity position is continuously monitored and adjustments are made to the balance between sources and uses of funds as deemed appropriate. Liquidity risk management is an important element in our asset/liability management process. We regularly model liquidity stress scenarios to assess potential liquidity outflows or funding problems resulting from economic disruptions, volatility in the financial markets, unexpected credit events or other significant occurrences deemed potentially problematic by management. These scenarios are incorporated into our contingency funding plan, which provides the basis for the identification of our liquidity needs. As of ~~September~~June 30, ~~2017,~~2018, management is not aware of any events that are reasonably likely to have a material adverse effect on our liquidity, capital resources or operations. Given the strong core deposit base and relatively low loan to deposit ratios maintained at our subsidiary bank, we consider our current liquidity position to be adequate to meet our short-term and long-term liquidity needs. In addition, management is not aware of any regulatory recommendations regarding liquidity that would have a material adverse effect on us.

Off-Balance Sheet Arrangements. We are a party to financial instruments withoff-balance-sheet risk in the normal course of business to meet the financing needs of our customers. These financial instruments include unfunded lines of credit, commitments to extend credit and federal funds sold to correspondent banks and standby letters of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in our consolidated balance sheets.

Our exposure to credit loss in the event of nonperformance by the counterparty to the financial instrument for unfunded lines of credit, commitments to extend credit and standby letters of credit is represented by the contractual notional amount of these instruments. We generally use the same credit policies in making commitments and conditional obligations as we do foron-balance-sheet instruments.

Unfunded lines of credit and commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. These commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. We evaluate each customer’s creditworthiness on acase-by-case basis. The amount of collateral obtained, as we deem necessary upon extension of credit, is based on our credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, property, plant, and equipment and income-producing commercial properties.

Standby letters of credit are conditional commitments we issue to guarantee the performance of a customer to a third party. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The average collateral value held on letters of credit usually exceeds the contract amount.

Table ~~10 -~~ 10—Commitments as of ~~September~~June 30, ~~2017~~2018 (in thousands):


	Total Notional Amounts Committed		Total Notional Amounts Committed
Unfunded lines of credit	$	519,764	$	610,743
Unfunded commitments to extend credit		267,856		298,305
Standby letters of credit		32,649		30,282

Total commercial commitments	$	820,269	$	939,330

We believe we have no otheroff-balance sheet arrangements or transactions with unconsolidated, special purpose entities that would expose us to liability that is not reflected on the face of the financial statements.

Parent Company Funding. Our ability to fund various operating expenses, dividends, and cash acquisitions is generally dependent on our own earnings (without giving effect to our subsidiaries), cash reserves and funds derived from our subsidiaries. These funds historically have been produced by intercompany dividends and management fees that are limited to reimbursement of actual expenses. We anticipate that our recurring cash sources will continue to include dividends and management fees from our subsidiaries. At ~~September~~June 30, ~~2017,~~2018, approximately ~~$170.03~~$223.17 million was available for the payment of intercompany dividends by our subsidiaries without the prior approval of regulatory agencies. Our subsidiaries paid aggregate dividends of ~~$29.00~~$3.80 million and ~~$25.60~~$27.20 million for the ~~nine-month~~six-month periods ended ~~September~~June 30, ~~2017~~2018 and ~~2016,~~2017, respectively.

Dividends. Our long-term dividend policy is to pay cash dividends to our shareholders of approximately 40% of annual net earnings while maintaining adequate capital to support growth. We are also restricted by a loan covenant within our line of credit agreement with Frost Bank to dividend no greater than 55% of net income, as defined in such loan agreement. The cash dividend payout ratios have amounted to ~~43.99%~~37.50% and ~~43.98%~~44.62% of net earnings for the first ~~nine~~six months of ~~2017~~2018 and ~~2016,~~2017, respectively. Given our current capital position and projected earnings and asset growth rates, we do not anticipate any significant change in our current dividend policy. On April 24, 2018, the Board of Directors declared a $0.21 per share cash dividend for the second quarter of 2018, an increase of $0.02 or 10.53% over 2017.

Our bank subsidiary, which is a national banking association and a member of the Federal Reserve System, is required by federal law to obtain the prior approval of the OCC to declare and pay dividends if the total of all dividends declared in any calendar year would exceed the total of (1) such bank’s net profits (as defined and interpreted by regulation) for that year plus (2) its retained net profits (as defined and interpreted by regulation) for the preceding two calendar years, less any required transfers to surplus.

To pay dividends, we and our subsidiary bank must maintain adequate capital above regulatory guidelines. In addition, if the applicable regulatory authority believes that a bank under its jurisdiction is engaged in or is about to engage in an unsafe or unsound practice (which, depending on the financial condition of the bank, could include the payment of dividends), the authority may require, after notice and hearing, that such bank cease and desist from the unsafe practice. The Federal Reserve, the FDIC and the OCC have each indicated that paying dividends that deplete a bank’s capital base to an inadequate level would be an unsafe and unsound banking practice. The Federal Reserve, the OCC and the FDIC have issued policy statements that recommend that bank holding companies and insured banks should generally only pay dividends out of current operating earnings.

Management considers interest rate risk to be a significant market risk for the Company. See “Item ~~2 –~~ 2—Management’s Discussion and Analysis of Financial Condition and Results of Operations – Capital ~~Resources –~~ Resources—Interest Rate Risk” for disclosure regarding this market risk.

As of ~~September~~June 30, ~~2017,~~2018, we carried out an evaluation, under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule13a-15(e) or15d-15(e) of the Securities Exchange Act of 1934). Our management, which includes our principal executive officer and our principal financial officer, does not expect that our disclosure controls and procedures will prevent all errors and all fraud.

A control system, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been detected. These inherent limitations include the realities that judgments in decision-making can be faulty and that breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by management override of the control. The design of any system of controls also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions; over time, controls may become inadequate because of changes in conditions or the degree of compliance with the policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected. Our principal executive officer and principal financial officer have concluded, based on our evaluation of our disclosure controls and procedures, that our disclosure controls and procedures were effective at the reasonable assurance level as of ~~September~~June 30, ~~2017.~~2018.

Subsequent to our evaluation, there were no significant changes in internal controls over financial reporting or other factors that have materially affected, or are reasonably likely to materially affect, these internal controls.

From time to time we and our subsidiaries are parties to lawsuits arising in the ordinary course of our banking business. However, there are no material pending legal proceedings to which we, our subsidiaries, or any of their properties, are currently subject. Other than regular, routine examinations by state and federal banking authorities, there are no proceedings pending or known to be contemplated by any governmental authorities.

There has been no material change in the risk factors previously disclosed under Item 1A. of the Company’s ~~2016~~2017 Annual Report on Form10-K.

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


Texas		75-0944023
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)

400 Pine Street, Abilene, Texas		79601
(Address of principal executive offices)		(Zip Code)


Large accelerated filer	☒	Accelerated filer	☐

Non-accelerated filer	☐ (Do not check if a smaller reporting company)	Smaller reporting company	☐

		Emerging growth company	☐


Class		Outstanding at ~~October~~July 31, ~~2017~~ 2018
Common Stock, $0.01 par value per share		~~66,226,057~~67,669,658


September 30, 2017		September 30, 2016		December 31, 2016
Recorded Investment	Valuation Allowance	Recorded Investment	Valuation Allowance	Recorded Investment	Valuation Allowance
$18,750	$4,177	$33,712	$7,042	$27,371	$5,012


June 30, 2018:	Outstanding Notional Balance		Asset Derivative Fair Value		Liability Derivative Fair Value
IRLCs	$	61,520	$	501	$	—
Forward mortgage-backed securities trades		17,500		—		47

June 30, 2017:	Outstanding Notional Balance		Asset Derivative Fair Value		Liability Derivative Fair Value
IRLCs	$	72,281	$	380	$	—

December 31, 2017:	Outstanding Notional Balance		Asset Derivative Fair Value		Liability Derivative Fair Value
IRLCs	$	37,589	$	500	$	—


	Three Months Ended September 30, 2017				Nine Months Ended September 30, 2017
	Number		Balance		Number		Balance
Commercial		2	$	88		3	$	141
Agriculture		—		—		—		—
Real Estate		—		—		1		62
Consumer		—		—		—		—

Total		2	$	88		4	$	203


	Three Months Ended September 30, 2016				Nine Months Ended September 30, 2016
	Number		Balance		Number		Balance
Commercial		1	$	62		1	$	62
Agriculture		—		—		—		—
Real Estate		1		112		2		462
Consumer		—		—		—		—

Total		2	$	174		3	$	524


September 30, 2017
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
Available-for-sale investment securities:
Obligations of U. S. government sponsored enterprises and agencies	$	—	$	73,588	$	—	$	73,588
Obligations of states and political subdivisions		—		1,434,194		—		1,434,194
Corporate bonds		—		15,099		—		15,099
Residential mortgage-backed securities		—		1,029,284		—		1,029,284
Commercial mortgage-backed securities		—		328,862		—		328,862
Other securities		4,456		—		—		4,456

Total	$	4,456	$	2,881,027	$	—	$	2,885,483


September 30, 2016
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
Available-for-sale investment securities:
U.S. Treasury securities	$	10,739	$	—	$	—	$	10,739
Obligations of U. S. government sponsored enterprises and agencies		—		115,720		—		115,720
Obligations of states and political subdivisions		—		1,502,716		—		1,502,716
Corporate bonds		—		65,037		—		65,037
Residential mortgage-backed securities		—		766,499		—		766,499
Commercial mortgage-backed securities		—		263,747		—		263,747
Other securities		4,572		—		—		4,572

Total	$	15,311	$	2,713,719	$	—	$	2,729,030


December 31, 2016
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
Available-for-sale investment securities:
U.S. Treasury securities	$	10,668	$	—	$	—	$	10,668
Obligations of U. S. government sponsored enterprises and agencies		—		113,703		—		113,703
Obligations of states and political subdivisions		—		1,564,276		—		1,564,276
Corporate bonds		—		47,965		—		47,965
Residential mortgage-backed securities		—		851,361		—		851,361
Commercial mortgage-backed securities		—		268,436		—		268,436
Other securities		4,428		—		—		4,428

Total	$	15,096	$	2,845,741	$	—	$	2,860,837


	June 30,								December 31,				Fair Value Hierarchy
	2018				2017				2017
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Cash and due from banks	$	178,217	$	178,217	$	163,435	$	163,435	$	209,583	$	209,583		Level 1
Federal funds sold		8,450		8,450		3,740		3,740		—		—		Level 1
Interest-bearing deposits in banks		99,499		99,499		53,336		53,336		162,764		162,764		Level 1
Interest-bearing time deposits in banks		1,458		1,458		1,458		1,458		1,458		1,458		Level 2
Available-for-sale securities		3,197,567		3,197,567		2,964,513		2,964,513		3,087,473		3,087,473		Levels 1 and 2
Held-to-maturity securities		—		—		105		107		—		—		Level 2
Loans Held for Investment		3,781,529		3,807,267		3,391,942		3,448,104		3,437,413		3,455,003		Level 3
Loans Held for Sale		24,289		24,289		18,327		18,327		15,130		15,130		Level 3
Accrued interest receivable		36,513		36,513		35,600		35,600		36,081		36,081		Level 2
Deposits with stated maturities		483,230		484,230		477,441		478,393		451,255		451,255		Level 2
Deposits with no stated maturities		5,727,377		5,727,377		5,149,168		5,149,168		5,511,706		5,511,706		Level 1
Borrowings		456,935		456,935		379,324		379,324		331,000		331,000		Level 2
Accrued interest payable		223		223		164		164		197		197		Level 2


Fair value of consideration paid:
Common stock issued (1,289,371 shares)	$	58,087

Fair value of identifiable assets acquired:
Cash and cash equivalents		18,653
Securities available-for-sale		64,501
Loans		266,327
Identifiable intangible assets		3,167
Other assets		15,375

Total identifiable assets acquired		368,023

Fair value of liabilities assumed:
Deposits		341,902
Other liabilities		(373	)

Total liabilities assumed		341,529

Fair value of net identifiable assets acquired		26,494

Goodwill resulting from acquisition	$	31,593


2.1	—	Agreement and Plan of Reorganization, dated October 12, 2017, by and among First Financial Bankshares, Inc., Kingwood Merger Sub, Inc., and Commercial Bancshares, Inc. (schedules have been omitted pursuant to Item ~~601 (b)~~601(b)(2) of RegulationS-K) ~~( incorporated~~ (incorporated by reference from Exhibit 2.1 to Registrant’s Form8-K filed October 12, 2017).

3.1	—	Amended and Restated Certificate of Formation (incorporated by reference from Exhibit 3.1 of the Registrant’s Form~~Form~~ 8-K filed April ~~28,~~30, 2015).

3.2	—	Amended and Restated Bylaws of the Registrant (incorporated by reference from Exhibit 99.1 of the Registrant’s Form~~Form~~ 8-K filed January 24, 2012).

4.1	—	Specimen certificate of First Financial Common Stock (incorporated by reference from Exhibit 3 of the Registrant’s Amendment No. 1 to Form~~Form~~ 8-A filed on Form~~Form~~ 8-A/A No. 1 on January 7, 1994).

10.1	—	2002 Incentive Stock Option Plan (incorporated by reference from Exhibit 10.3 of the Registrant’s Form~~Form~~ 10-Q filed May 4, 2010).++

10.2	—	2012 Incentive Stock Option Plan (incorporated by reference from Appendix A of the Registrant’s Definitive Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 filed March 1, 2012).++

10.3	—	Loan agreement dated June 30, 2013, between First Financial Bankshares, Inc. and Frost Bank (incorporated by reference from Exhibit 10.1 of the Registrant’s Form~~Form~~ 8-K filed July 1, 2013).

10.4	—	First Amendment to Loan Agreement, dated June 30, 2015, between First Financial Bankshares, Inc. and Frost Bank (incorporated by reference from Exhibit 10.1 of the Registrant’s Form~~Form~~ 8-K filed June 30, 2015).

10.5	—	Second Amendment to Loan Agreement, dated June 30, 2017, between First Financial Bankshares, Inc. and Frost Bank (incorporated by reference from Exhibit 10.1 of the Registrant’s Form8-K filed June 30, 2017).

10.6	—	2015 Restricted Stock Plan (incorporated by reference from Appendix A of the Registrant’s Definitive Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 filed March 2, 2015).++

~~10.6~~10.7	—	Form of Executive Recognition Agreement (incorporated by reference from Exhibit 10.1 of the Registrant’s Form~~Form~~ 8-K filed ~~August 26, 2016)~~June 29, 2018).++

~~10.7~~	—	~~Second Amendment to Loan Agreement, dated June 30, 2017, between First Financial Bankshares, Inc. and Frost Bank (incorporated by reference from Exhibit 10.1 of the Registrant’sForm 8-K~~ ~~filed June 30, 2017).~~

31.1	—	Rule13a-14(a) /15(d)-14(a) Certification of Chief Executive Officer of First Financial Bankshares, Inc.*

31.2	—	Rule13a-14(a) /15(d)-14(a) Certification of Chief Financial Officer of First Financial Bankshares, Inc.*

32.1	—	Section 1350 Certification of Chief Executive Officer of First Financial Bankshares, Inc.+

32.2	—	Section 1350 Certification of Chief Financial Officer of First Financial Bankshares, Inc.+

101.INS	—	XBRL Instance Document.*

101.SCH	—	XBRL Taxonomy Extension Schema Document.*

101.CAL	—	XBRL Taxonomy Extension Calculation Linkbase Document.*

101.DEF	—	XBRL Taxonomy Extension Definition Linkbase Document.*

101.LAB	—	XBRL Taxonomy Extension Label Linkbase Document.*

101.PRE	—	XBRL Taxonomy Extension Presentation Linkbase Document.*


	FIRST FINANCIAL BANKSHARES, INC.

Date: ~~October~~July 31, ~~2017~~2018	By:	/s/ F. Scott Dueser
		F. Scott Dueser
		President and Chief Executive Officer

Date: ~~October~~July 31, ~~2017~~2018	By:	/s/ J. Bruce Hildebrand
		J. Bruce Hildebrand
		Executive Vice President and
		Chief Financial Officer