Exhibit 99.1

FOR IMMEDIATE RELEASE	Contact: Matt Funke, CFO
April 23, 2018	(573) 778-1800

SOUTHERN MISSOURI BANCORP REPORTS PRELIMINARY RESULTS FOR THIRD QUARTER OF FISCAL 2018;

DIVIDEND OF $0.11 PER COMMON SHARE DECLARED;

CONFERENCE CALL TO DISCUSS RESULTS SCHEDULED FOR TUESDAY, APRIL 24, AT 3:30PM CENTRAL TIME

Poplar Bluff, Missouri - Southern Missouri Bancorp, Inc. ("Company") (NASDAQ: SMBC), the parent corporation of Southern Bank ("Bank"), today announced preliminary net income available to common stockholders for the third quarter of fiscal 2018 of $5.3 million, an increase of $1.3 million, or 33.0%, as compared to the same period of the prior fiscal year. The increase was attributable to increases in net interest income and noninterest income, partially offset by increases in noninterest expense, provision for income taxes, and provision for loan losses. Third quarter earnings were negatively impacted by non-recurring charges related to the acquisition of Southern Missouri Bancshares, Inc., and its subsidiary, Southern Missouri Bank of Marshfield (the "SMB-Marshfield Acquisition"), and positively impacted by gains realized on the sale of available-for-sale (AFS) securities and fixed assets. Preliminary net income available to common stockholders was $.60 per fully diluted common share for the third quarter of fiscal 2018, an increase of $.07 as compared to the $.53 per fully diluted common share reported for the same period of the prior fiscal year.

Highlights for the third quarter of fiscal 2018:

Annualized return on average assets was 1.15%, while annualized return on average common equity was 11.2%, as compared to 1.07% and 11.9%, respectively, in the same quarter a year ago, and 1.17% and 11.6%, respectively, in the second quarter of fiscal 2018, the linked quarter.

Earnings per common share (diluted) were $.60, up $.07, or 13.2%, as compared to the same quarter a year ago, and unchanged from the second quarter of fiscal 2018, the linked quarter.

Net loan growth for the third quarter of fiscal 2018 was $69.5 million, as the SMB-Marshfield Acquisition contributed $68.3 million in new loans; organic growth was limited in what is normally a seasonally slow quarter for the Company. Net loans are up $124.7 million, or 8.9%, for the fiscal year to date. Deposit growth was $65.4 million for the third quarter, as the SMB-Marshfield Acquisition contributed $68.2 million in new deposits. Exclusive of the acquisition, the Company reduced wholesale deposits. Deposits are up $118.7 million, or 8.2%, for the fiscal year to date.

Net interest margin for the third quarter of fiscal 2018 was 3.74%, up from the 3.64% reported for the year ago period, and down from 3.87% for the second quarter of fiscal 2018, the linked quarter. Discount accretion in the current quarter was up significantly from the year-ago period, and down from the linked quarter, as discussed in detail below.

Noninterest income, excluding securities gains, was up 23.6% for the third quarter of fiscal 2018, compared to the year ago period, and up 15.3% as compared to the second quarter of fiscal 2018, the linked quarter. The current period included gains on the sale of AFS securities and fixed assets, discussed in detail below.

Noninterest expense was up 24.7% for the third quarter of fiscal 2018, compared to the year ago period, and up 13.4% from the second quarter of fiscal 2018, the linked quarter. The current period included elevated nonrecurring charges related to the SMB-Marshfield Acquisition, discussed in detail below.

Nonperforming assets were $10.4 million, or 0.56% of total assets, at March 31, 2018, as compared to $6.3 million, or 0.37% of total assets, at our fiscal year end, June 30, 2017, and $11.0 million, or 0.62% of total assets, at December 31, 2017, the linked quarter end.

Dividend Declared:

The Board of Directors, on April 17, 2018, declared a quarterly cash dividend on common stock of $0.11, payable May 31, 2018, to stockholders of record at the close of business on May 15, 2018, marking the 96^th consecutive quarterly dividend since the inception of the Company. The Board of Directors and management believe the payment of a quarterly cash dividend enhances stockholder value and demonstrates our commitment to and confidence in our future prospects.

Conference Call:

The Company will host a conference call to review the information provided in this press release on Tuesday, April 24, 2018, at 3:30 p.m. central time (4:30 p.m. eastern). The call will be available live to interested parties by calling 1-888-339-0709 in the United States (Canada: 1-855-669-9657, international: 1-412-902-4189). Participants should ask to be joined into the Southern Missouri Bancorp (SMBC) call. Telephone playback will be available beginning one hour following the conclusion of the call through May 8, 2018. The playback may be accessed by dialing 1-877-344-7529 (Canada: 1-855-669-9658, international: 1-412-317-0088), and using the conference passcode 10119709.

Balance Sheet Summary:

The Company experienced balance sheet growth in the first nine months of fiscal 2018, with total assets of $1.8 billion at March 31, 2018, reflecting an increase of $142.1 million, or 8.3%, as compared to June 30, 2017. Asset growth was comprised mainly of loan growth.

Available-for-sale ("AFS") securities were $146.1 million at March 31, 2018, an increase of $1.7 million, or 1.2%, as compared to June 30, 2017. Cash equivalents and time deposits were $32.7 million, an increase of $1.2 million, or 3.8%, as compared to June 30, 2017.

Loans, net of the allowance for loan losses, were $1.5 billion at March 31, 2018, an increase of $124.7 million, or 8.9%, as compared to June 30, 2017. The increase was attributable in large part to the SMB-Marshfield Acquisition, which added loans totaling $68.3 million at fair value. Inclusive of these acquired loans, our portfolio saw growth in commercial real estate loans, residential real estate loans, consumer loans, commercial loans, and drawn balances in construction loans. Commercial real estate growth was mostly attributable to increases in loans secured by nonresidential properties and agricultural real estate. Residential real estate growth was attributable to growth in loans secured by 1-4 family properties, partially offset by a decline in loans secured by multifamily properties. The increase in commercial loan balances was attributable to growth in commercial & industrial lending, partially offset by paydowns in agricultural operating loans. Loans anticipated to fund in the next 90 days stood at $91.4 million at March 31, 2018, as compared to $97.3 million at December 31, 2017, and $43.0 million at March 31, 2017.

Nonperforming loans were $6.2 million, or 0.41% of gross loans, at March 31, 2018, as compared to $3.2 million, or 0.23% of gross loans, at June 30, 2017. Nonperforming assets were $10.4 million, or 0.56% of total assets, at March 31, 2018, as compared to $6.3 million, or 0.37% of total assets, at June 30, 2017. The increase in nonperforming loans and assets was comprised mainly of an increase in nonaccrual loans, which was attributable primarily to two relationships: a $1.7 million relationship secured by commercial collateral, agricultural real estate, and commercial real estate, which has deteriorated relatively recently; and a $1.0 million multifamily relationship which has been considered a classified asset for approximately four years. The remainder of the increase is attributable to a number of consumer loans, secured primarily by residential real estate. In our prior quarterly earnings release, the Company noted a $4.7 million commercial relationship which had moved to more than 90 days delinquent and still accruing. This relationship had been considered a classified asset for more than five years. The Company was in negotiations for renewal and modification with the borrower during the quarter ended December 31, 2017. Included in the relationship is a $3.5 million loan secured by commercial real estate and equipment which carries a 90% guaranty from the USDA, while the remaining balance is structured as lines of

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credit which are secured by additional commercial real estate, receivables, and a personal residence. A short-term renewal was completed during the quarter ended March 31, 2018, and the Company continues to work with the borrower toward a longer-term restructuring. Our allowance for loan losses at March 31, 2018, totaled $17.3 million, representing 1.12% of gross loans and 278% of nonperforming loans, as compared to $15.5 million, or 1.10% of gross loans, and 482% of nonperforming loans, at June 30, 2017. For all impaired loans, the Company has measured impairment under ASC 310-10-35. Management believes the allowance for loan losses at March 31, 2018, is adequate, based on that measurement.

Total liabilities were $1.7 billion at March 31, 2018, an increase of $118.7 million, or 7.7%, as compared to June 30, 2017.

Deposits were $1.6 billion at March 31, 2018, an increase of $118.7 million, or 8.2%, as compared to June 30, 2017. Deposit growth was attributable in large part to the SMB-Marshfield Acquisition, which added deposits of $68.2 million at fair value. Inclusive of these assumed deposits, our deposit balances saw growth in interest-bearing transaction accounts, money market deposit accounts, and noninterest-bearing transaction accounts, while certificate of deposit balances declined. Since June 30, 2017, the Company's public unit deposits increased by $73.4 million (including $7.7 million from the SMB-Marshfield Acquisition), brokered certificates of deposit decreased $50.4 million, and brokered nonmaturity deposits decreased $2.5 million. Our discussion of brokered deposits excludes those brokered deposits originated through reciprocal arrangements, as our reciprocal brokered deposits are primarily originated by our public unit depositors and utilized as an alternative to pledging securities against those deposits. The average loan-to-deposit ratio for the third quarter of fiscal 2018 was 96.8%, as compared to 98.7% for the same period of the prior fiscal year.

FHLB advances were $50.9 million at March 31, 2018, an increase of $7.2 million, or 16.5%, as compared to June 30, 2017, as the Company assumed $4.8 million (at fair value) in term advances in the SMB-Marshfield acquisition and utilized overnight funding to provide for loan growth in excess of deposit growth and to allow brokered deposits to mature without renewal. Securities sold under agreements to repurchase totaled $3.8 million at March 31, 2018, a decrease of $6.4 million, or 63.1%, as compared to June 30, 2017, as we continued to encourage larger customers to migrate from this product to a reciprocal brokered deposit arrangement. At both dates, the full balance of repurchase agreements was due to local small business and government counterparties.

The Company's stockholders' equity was $196.5 million at March 31, 2018, an increase of $23.4 million, or 13.5%, as compared to June 30, 2017. The increase was attributable to common stock issued in the SMB-Marshfield acquisition and retention of net income, partially offset by payment of dividends on common stock and a decrease in accumulated other comprehensive income.

Income Statement Summary:

The Company's net interest income for the three-month period ended March 31, 2018, was $15.7 million, an increase of $3.2 million, or 26.1%, as compared to the same period of the prior fiscal year. The increase was attributable to a 22.9% increase in the average balance of interest-earning assets, combined with an increase in net interest margin to 3.74% in the current three-month period, from 3.64% in the three-month period a year ago.

Loan discount accretion and deposit premium amortization related to the Company's August 2014 acquisition of Peoples Service Company and its subsidiary, Peoples Bank of the Ozarks (the "Peoples Acquisition"), decreased to $113,000 for the three-month period ended March 31, 2018, as compared to $216,000 for the same period of the prior fiscal year. Loan discount accretion and deposit premium amortization related to the Company's June 2017 acquisition of Tammcorp, Inc., and its subsidiary, Capaha Bank (the "Capaha Acquisition") resulted in an additional $429,000 in net interest income for the three-month period ended March 31, 2018, with no comparable item in the same period a year ago. Combined, these components of net interest income contributed 13 basis points to net interest margin in the three-month period ended March 31, 2018, as compared to a contribution of six basis points for the same period of the prior fiscal year. For the linked quarter, ended December 31, 2017, when net interest margin was 3.87%, comparable items contributed 21 basis points to the net

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interest margin. The dollar impact of this component of net interest income has generally been declining each sequential quarter as assets from the Peoples Acquisition mature or prepay, however, the Capaha Acquisition will contribute additional net interest income during fiscal 2018, with no comparable items from fiscal 2017 periods. Also, additional interest income was recognized in the current quarter due to the resolution of specific purchased credit impaired loans from the Capaha Acquisition.

The provision for loan losses for the three-month period ended March 31, 2018, was $550,000, as compared to $376,000 in the same period of the prior fiscal year. As a percentage of average loans outstanding, the provision for loan losses in the current three-month period represented a charge of 0.15% (annualized), while the Company recorded net charge offs during the period of 0.04% (annualized). During the same period of the prior fiscal year, provision for loan losses as a percentage of average loans outstanding represented a charge of 0.12% (annualized), while the Company recorded net charge offs of 0.06% (annualized).

The Company's noninterest income, including securities gains, for the three-month period ended March 31, 2018, was $3.9 million, an increase of $945,000, or 32.3%, as compared to the same period of the prior fiscal year. Gains on the sale of AFS securities totaled $254,000, and gains on the sale of fixed assets totaled $188,000, with no comparable activity in the year ago period. The year-ago period included a non-recurring benefit of $302,000 related to bank-owned life insurance, with no comparable activity in the current period. Otherwise, the increase was attributable primarily to bank card interchange income, loan prepayment penalties, loan origination fees, loan servicing fees, deposit account service charges, and gains on the sale of residential real estate loans originated for that purpose, partially offset by a decrease in loan late charges collected.

Noninterest expense for the three-month period ended March 31, 2018, was $11.9 million, an increase of $2.4 million, or 24.7%, as compared to the same period of the prior fiscal year. The increase was attributable primarily to increases in compensation and benefits and occupancy expenses, as a result of the Company's larger staff and number of facilities following the Capaha Acquisition. Expenses related to merger and acquisition activity in the current quarter totaled $443,000, compared to $73,000 in comparable charges in the same quarter a year ago, accounting for much of the increase noted in legal and professional fees, data processing, and other expenses. Additionally, noninterest expense increased compared to the same quarter a year ago as the Company amortized new core deposit intangibles and experienced higher bankcard network expenses. The efficiency ratio for the three-month period ended March 31, 2018, was 61.8%, as compared to 62.3% in the same period of the prior fiscal year.

The income tax provision for the three-month period ended March 31, 2018, was $1.8 million, an increase of $347,000, or 23.7%, as compared to the same period of the prior fiscal year, attributable to higher pre-tax income, partially offset by a decrease in the effective tax rate, to 25.6%, as compared to 27.0% in the year-ago period. The lower effective tax rate was attributed primarily to the December 2017 enactment of a reduction in the federal corporate income tax rate. The year-ago period included a larger amount of nontaxable income related to bank-owned life insurance, while the current period included a larger amount of nondeductible acquisition expenses, which had the effect of decreasing the impact of the reduction in the statutory tax rate.

Forward-Looking Information:

Except for the historical information contained herein, the matters discussed in this press release may be deemed to be forward-looking statements that are subject to known and unknown risks, uncertainties, and other factors that could cause the actual results to differ materially from the forward-looking statements, including: the strength of the United States economy in general and the strength of the local economies in which we conduct operations; fluctuations in interest rates and in real estate values; monetary and fiscal policies of the Board of Governors of the Federal Reserve System and the U.S. Government and other governmental initiatives affecting the financial services industry; the risks of lending and investing activities, including changes in the level and direction of loan delinquencies and write-offs and changes in estimates of the adequacy of the allowance for loan losses; our ability to access cost-effective funding; the timely development of and acceptance of our new products and services and the perceived overall value of these products and services by users, including the features,

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pricing and quality compared to competitors' products and services; expected cost savings, synergies and other benefits from the Company's merger and acquisition activities might not be realized to the extent anticipated or within the anticipated time frames, if at all, and costs or difficulties relating to integration matters, including but not limited to customer and employee retention, might be greater than expected; fluctuations in real estate values and both residential and commercial real estate market conditions; demand for loans and deposits in our market area; legislative or regulatory changes that adversely affect our business; results of examinations of us by our regulators, including the possibility that our regulators may, among other things, require us to increase our reserve for loan losses or to write-down assets; the impact of technological changes; and our success at managing the risks involved in the foregoing. Any forward-looking statements are based upon management's beliefs and assumptions at the time they are made. We undertake no obligation to publicly update or revise any forward-looking statements or to update the reasons why actual results could differ from those contained in such statements, whether as a result of new information, future events or otherwise. In light of these risks, uncertainties and assumptions, the forward-looking statements discussed might not occur, and you should not put undue reliance on any forward-looking statements.

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Southern Missouri Bancorp, Inc.
UNAUDITED CONDENSED CONSOLIDATED FINANCIAL INFORMATION
Summary Balance Sheet Data as of:	March 31,			December 31,			September 30,			June 30,			March 31,
(dollars in thousands, except per share data)	2018			2017			2017			2017			2017
Cash equivalents and time deposits	$	32,730		$	35,734		$	25,849		$	31,533		$	21,508
Available for sale securities		146,127			148,353			147,680			144,416			134,048
FHLB/FRB membership stock		7,731			7,504			8,384			6,119			6,220
Loans receivable, gross		1,539,708			1,469,842			1,465,917			1,413,268			1,241,120
Allowance for loan losses		17,263			16,867			16,357			15,538			15,190
Loans receivable, net		1,522,445			1,452,975			1,449,560			1,397,730			1,225,930
Bank-owned life insurance		37,188			34,795			34,562			34,329			30,147
Intangible assets		20,213			14,752			15,071			15,390			7,287
Premises and equipment		55,495			53,479			54,129			54,167			46,624
Other assets		27,864			29,105			28,256			24,028			24,220
Total assets	$	1,849,793		$	1,776,697		$	1,763,491		$	1,707,712		$	1,495,984
Interest-bearing deposits	$	1,377,423		$	1,316,703		$	1,276,943		$	1,269,394		$	1,133,405
Noninterest-bearing deposits		196,914			192,266			194,747			186,203			139,095
Securities sold under agreements to repurchase		3,769			3,697			6,627			10,212			17,900
FHLB advances		50,850			59,914			84,654			43,637			51,619
Note payable		3,000			3,000			3,000			3,000			-
Other liabilities		6,420			5,721			5,613			7,335			5,156
Subordinated debt		14,921			14,896			14,872			14,848			14,824
Total liabilities		1,653,297			1,596,197			1,586,456			1,534,629			1,361,999
Common stockholders' equity		196,496			180,500			177,035			173,083			133,985
Total stockholders' equity		196,496			180,500			177,035			173,083			133,985
Total liabilities and stockholders' equity	$	1,849,793		$	1,776,697		$	1,763,491		$	1,707,712		$	1,495,984
Equity to assets ratio		10.62	%		10.16	%		10.04	%		10.14	%		8.96	%
Common shares outstanding		8,993,084			8,588,338			8,591,363			8,591,363			7,450,041
Less: Restricted common shares not vested		29,200			10,600			17,975			18,775			33,175
Common shares for book value determination		8,963,884			8,577,738			8,573,388			8,572,588			7,416,866
Book value per common share	$	21.92		$	21.04		$	20.65		$	20.19		$	18.06
Closing market price		36.60			37.59			36.49			32.26			35.52

Nonperforming asset data as of:	March 31,			December 31,			September 30,			June 30,			March 31,
(dollars in thousands)	2018			2017			2017			2017			2017
Nonaccrual loans	$	6,218		$	1,635		$	2,307		$	2,825		$	3,069
Accruing loans 90 days or more past due		-			5,681			303			401			134
Total nonperforming loans		6,218			7,316			2,610			3,226			3,203
Other real estate owned (OREO)		4,067			3,653			3,357			3,014			3,296
Personal property repossessed		75			71			67			86			37
Total nonperforming assets	$	10,360		$	11,040		$	6,034		$	6,326		$	6,536
Total nonperforming assets to total assets		0.56	%		0.62	%		0.34	%		0.37	%		0.44	%
Total nonperforming loans to gross loans		0.41	%		0.50	%		0.18	%		0.23	%		0.26	%
Allowance for loan losses       to nonperforming loans		277.63	%		230.55	%		626.70	%		481.65	%		474.24	%
Allowance for loan losses to gross loans		1.12	%		1.15	%		1.12	%		1.10	%		1.22	%
Performing troubled debt restructurings (1)	$	11,847		$	8,472		$	10,738		$	10,908		$	8,649
(1) Nonperforming troubled debt restructurings are included with nonaccrual loans or accruing loans 90 days or more past due.

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	For the three-month period ended
Quarterly Average Balance Sheet Data:	March 31,		December 31,		September 30,		June 30,		March 31,
(dollars in thousands)	2018		2017		2017		2017		2017
Interest-bearing cash equivalents	$	3,898	$	3,027	$	2,268	$	2,482	$	1,896
Available for sale securities       and membership stock		159,875		157,101		153,872		143,114		141,223
Loans receivable, gross		1,513,674		1,463,054		1,436,156		1,271,705		1,221,642
Total interest-earning assets		1,677,447		1,623,182		1,592,296		1,417,301		1,364,761
Other assets		144,828		141,666		140,660		117,235		119,437
Total assets	$	1,822,275	$	1,764,848	$	1,732,956	$	1,534,536	$	1,484,198
Interest-bearing deposits	$	1,368,235	$	1,293,165	$	1,280,842	$	1,155,547	$	1,099,319
Securities sold under agreements to repurchase		3,611		4,585		9,492		13,694		24,053
FHLB advances		40,268		70,797		55,063		55,914		71,405
Note payable		3,000		3,000		3,000		1,451		-
Subordinated debt		14,909		14,884		14,860		14,836		14,812
Total interest-bearing liabilities		1,430,023		1,386,431		1,363,257		1,241,442		1,209,589
Noninterest-bearing deposits		195,880		193,028		187,330		145,790		138,667
Other noninterest-bearing liabilities		7,871		6,657		7,367		5,191		3,480
Total liabilities		1,633,774		1,586,116		1,557,954		1,392,423		1,351,736
Common stockholders' equity		188,501		178,732		175,002		142,113		132,462
Total stockholders' equity		188,501		178,732		175,002		142,113		132,462
Total liabilities and stockholders' equity	$	1,822,275	$	1,764,848	$	1,732,956	$	1,534,536	$	1,484,198

	For the three-month period ended
Quarterly Summary Income Statement Data:	March 31,			December 31,			September 30,			June 30,			March 31,
(dollars in thousands, except per share data)	2018			2017			2017			2017			2017
Interest income:
Cash equivalents	$	22		$	11		$	10		$	8		$	13
Available for sale securities          and membership stock		1,026			984			946			895			875
Loans receivable		18,337			18,236			17,455			15,442			14,067
Total interest income		19,385			19,231			18,411			16,345			14,955
Interest expense:
Deposits		3,281			3,025			2,862			2,386			2,111
Securities sold under          agreements to repurchase		8			8			14			18			25
FHLB advances		199			284			226			214			224
Note payable		30			29			28			13			-
Subordinated debt		192			182			178			173			163
Total interest expense		3,710			3,528			3,308			2,804			2,523
Net interest income		15,675			15,703			15,103			13,541			12,432
Provision for loan losses		550			642			868			383			376
Securities gains		254			37			-			-			-
Other noninterest income		3,616			3,137			3,271			2,884			2,925
Noninterest expense		11,927			10,519			10,755			10,823			9,564
Income taxes		1,810			2,546			1,889			1,506			1,463
Net income available             to common stockholders	$	5,258		$	5,170		$	4,862		$	3,713		$	3,954
Basic earnings per common share	$	0.60		$	0.60		$	0.57		$	0.49		$	0.53
Diluted earnings per common share		0.60			0.60			0.56			0.49			0.53
Dividends per common share		0.11			0.11			0.11			0.10			0.10
Average common shares outstanding:
Basic		8,762,000			8,589,000			8,591,000			7,606,000			7,450,000
Diluted		8,775,000			8,619,000			8,620,000			7,635,000			7,479,000
Return on average assets		1.15	%		1.17	%		1.12	%		0.97	%		1.07	%
Return on average common       stockholders' equity		11.2	%		11.6	%		11.1	%		10.5	%		11.9	%
Net interest margin		3.74	%		3.87	%		3.79	%		3.82	%		3.64	%
Net interest spread		3.58	%		3.72	%		3.66	%		3.71	%		3.55	%
Efficiency ratio		61.8	%		55.8	%		58.5	%		65.9	%		62.3	%

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