10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2017

OR

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from                      to                      

Commission File Number: 001-37831

FSB BANCORP, INC.

(Exact name of registrant as specified in its charter)

Maryland	81-2509654
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
45 South Main Street, Fairport, New York	14450
(Address of principal executive offices)	(Zip Code)

(585) 377-8970

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

(Title of each class)	(Name of each exchange on which registered)
Common Stock, $0.01 par value	The Nasdaq Stock Market, LLC

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes  ¨    No  x

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes  ¨    No  x

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  x    No  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes  x    No  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	¨	Accelerated filer	¨
Non-accelerated filer	¨	(Do not check if a smaller reporting company)
		Smaller reporting company	x
		Emerging growth company	x

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 Rule 12b-2 of the Act). Yes  ¨    No  x

The aggregate market value of the voting and non-voting common equity held by non-affiliates of the registrant, computed by reference to the closing price of the common stock on June 30, 2017, was $26.7 million.

As of March 29, 2018, there were 1,941,253 outstanding shares of the registrant’s common stock.

DOCUMENTS INCORPORATED BY REFERENCE

2017 Annual Report to Stockholders (Part II)

Proxy Statement for the 2018 Annual Meeting of Stockholders (Part III).

TABLE OF CONTENTS

ITEM 1.	BUSINESS	1
ITEM 1A.	RISK FACTORS	28
ITEM 1B.	UNRESOLVED STAFF COMMENTS	28
ITEM 2.	PROPERTIES	29
ITEM 3.	LEGAL PROCEEDINGS	29
ITEM 4.	MINE SAFETY DISCLOSURES	29
ITEM 5.	MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES	30
ITEM 6.	SELECTED FINANCIAL DATA	32
ITEM 7.	MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS	32
ITEM 7A.	QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK	32
ITEM 8.	FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA	32
ITEM 9.	CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE	32
ITEM 9A.	CONTROLS AND PROCEDURES	32
ITEM 9B.	OTHER INFORMATION	33
ITEM 10.	DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE	34
ITEM 11.	EXECUTIVE COMPENSATION	34
ITEM 12.	SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS	34
ITEM 13.	CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE	34
ITEM 14.	PRINCIPAL ACCOUNTANT FEES AND SERVICES	34
ITEM 15.	EXHIBITS AND FINANCIAL STATEMENT SCHEDULES	35
ITEM 16.	FORM 10-K SUMMARY	36

PART I

ITEM 1. BUSINESS

Forward Looking Statements

This Annual Report on Form 10-K contains forward-looking statements, which can be identified by the use of words such as “estimate,” “project,” “believe,” “intend,” “anticipate,” “plan,” “seek,” “expect,” “will,” “would,” “should,” “could” or “may,” and words of similar meaning. These forward-looking statements include, but are not limited to:

· statements of our goals, intentions and expectations;

· statements regarding our business plans, prospects, growth and operating strategies;

· statements regarding the quality of our loan and investment portfolios; and

· estimates of our risks and future costs and benefits.

These forward-looking statements are based on current beliefs and expectations of FSB Bancorp, Inc.’s management and are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are beyond our control. In addition, these forward-looking statements are subject to assumptions with respect to future business strategies and decisions that are subject to change.

The following factors, among others, could cause actual results to differ materially from the anticipated results or other expectations expressed in the forward-looking statements:

· general economic conditions, either nationally or in our market areas, that are worse than expected;

· 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;

· fluctuations in real estate values and both residential and commercial real estate market conditions;

· demand for loans and deposits in our market area;

· our ability to implement and change our business strategies;

· competition among depository and other financial institutions;

· inflation and changes in the interest rate environment that reduce our margins and yields, our mortgage banking revenues, the fair value of financial instruments or our level of loan originations, or increase the level of defaults, losses and prepayments on loans we have made and make;

· adverse changes in the securities or secondary mortgage markets;

· changes in laws or government regulations or policies affecting financial institutions, including changes in regulatory fees and capital requirements, including as a result of Basel III;

· the impact of the Dodd-Frank Act and the implementing regulations;

· changes in the quality or composition of our loan or investment portfolios;

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· technological changes that may be more difficult or expensive than expected;

· the inability of third party providers to perform as expected;

· our ability to manage market risk, credit risk and operational risk in the current economic environment;

· our ability to enter new markets successfully and capitalize on growth opportunities;

· our ability to successfully integrate into our operations any assets, liabilities, customers, systems and management personnel we may acquire and our ability to realize related revenue synergies and cost savings within expected time frames and any goodwill charges related thereto;

· changes in consumer spending, borrowing and savings habits;

· changes in accounting policies and practices, as may be adopted by the bank regulatory agencies, the Financial Accounting Standards Board, the Securities and Exchange Commission or the Public Company Accounting Oversight Board;

· our ability to retain key employees;

· our compensation expense associated with equity allocated or awarded to our employees; and

· changes in the financial condition, results of operations or future prospects of issuers of securities that we own.

Because of these and other uncertainties, our actual future results may be materially different from the results indicated by these forward-looking statements. Except as required by applicable law or regulation, we do not undertake, and we specifically disclaim any obligation, to release publicly the results of any revisions that may be made to any forward-looking statements to reflect events or circumstances after the date of the statements or to reflect the occurrence of anticipated or unanticipated events.

FSB Bancorp, Inc.

FSB Bancorp, Inc. (“FSB Bancorp” or the “Company”) is a Maryland corporation. The Company owns all of the outstanding shares of common stock of Fairport Savings Bank (the “Bank”), its banking subsidiary. At December 31, 2017, the Company had consolidated assets of $314.6 million, total deposits of $216.7 million, and stockholders’ equity of $31.2 million. FSB Bancorp’s common stock is traded on the Nasdaq Capital Market under the symbol “FSBC.” The Company is subject to the supervision and regulation of the Board of Governors of the Federal Reserve System (the “Federal Reserve Board”).

On July 13, 2016, FSB Bancorp completed its second step conversion from the mutual holding company structure to the stock holding company structure, including a related public offering of common stock, and is now fully publicly owned. The Company sold 1,034,649 shares of common stock at $10.00 per share and raised gross proceeds of approximately $10.3 million in its stock offering. Additionally, in connection with the conversion, the Bank revoked its election for its holding company to be regulated as a savings and loan holding company pursuant to Section 10(l) of the Home Owners Loan Act. Consequently, the Company is regulated as a bank holding company under the Bank Holding Company Act of 1956.

Concurrent with the completion of the conversion and reorganization, shares of common stock of the Company’s predecessor, FSB Community Bankshares, Inc. (“FSB Community”) owned by public stockholders were exchanged for shares of FSB Bancorp’s common stock, so that the former public stockholders of FSB Community owned approximately the same percentage of FSB Bancorp’s common stock as they owned of FSB Community’s common stock immediately prior to the conversion. Stockholders of FSB Community received 1.0884 shares of FSB Bancorp common stock for each share of FSB Community’s stock they owned immediately prior to completion of the transaction. All financial information presented in this Annual Report on Form 10-K for periods before July 13, 2016 relates to the Company’s predecessor, FSB Community.

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The Company’s principal office is located at 45 South Main Street, Fairport, New York, 14450. Our website address is www.fairportsavingsbank.com. Our Annual Report on Form 10-K is available on our website under the “About Us” and “Investor Relations” tabs. Information on this website is not and should not be considered part of this Annual Report on Form 10-K.

Fairport Savings Bank

Fairport Savings Bank is a New York-chartered savings bank established in 1888 and headquartered in Fairport, New York. The Bank conducts business from its main office in Fairport and through four branch offices located in Penfield, Irondequoit, Webster and Perinton, New York, all of which are located in the greater Rochester metropolitan area. Fairport Savings Bank also operates loan origination offices in Pittsford and Greece, New York, in the Rochester metropolitan area, as well as in Buffalo and Watertown, New York. Fairport Savings Bank is subject to regulation and supervision by the New York State Department of Financial Services and the Federal Deposit Insurance Corporation.

The Bank’s principal business consists of originating one- to four-family residential real estate mortgage loans and home equity lines of credit, and to a lesser but increasing extent, commercial real estate, multi-family and construction loans. We also offer commercial and industrial loans and other consumer loans. In October 2017, we hired a Chief Lending Officer to manage and oversee the growth of our loan portfolio and supervise credit administration to continue to maintain our high asset quality. Our principal source of funds are the retail deposit products we offer to the general public in the areas surrounding our branch offices. We also utilize borrowings as a source of funds. Our revenues are derived primarily from interest on loans and, to a lesser extent, interest on investment and municipal securities and mortgage-backed securities. We also generate revenues from other income, including realized gains on sales of loans associated with loan production generated from our loan origination offices, deposit fees and service charges, realized gains on sales of securities, earnings on bank owned life insurance and loan fees. Additionally, we derive a portion of our other income through Fairport Wealth Management, our subsidiary that offers non-deposit investments such as annuities, insurance products and mutual funds.

Market Area

Our market area primarily consists of Monroe County, New York, and to a lesser extent, the surrounding counties in Western New York. Monroe County is a suburban market dominated by the City of Rochester, the third largest city in the State of New York. In 2017, Monroe County had a population of 744,000. The Monroe County economy is largely dependent on several large manufacturing companies, as well as sizeable higher education and health care facilities centered in Rochester. The University of Rochester and Strong Memorial Hospital were two of the largest employers in the Rochester area in 2017. Rochester is also home to a number of international businesses, including Bausch & Lomb and Paychex. Additionally, Xerox, while no longer headquartered in Rochester, has its principal offices and manufacturing facilities in Monroe County. As of September 2017, the unemployment rate for Monroe County was 4.9%, as compared to a 4.7% rate for the State of New York and the national average of 4.2%.

Competition

We face intense competition in our market area both in making loans and attracting deposits. Our market area has a high concentration of financial institutions, including large money center and regional banks, community banks and credit unions. We face additional competition for deposits from money market funds, brokerage firms, mutual funds and insurance companies. Most of our competitors are significantly larger institutions with greater financial and managerial resources and higher lending limits. Additionally, some of our competitors offer products and services that we currently do not offer, such as trust services and private banking. Our primary strategy for increasing and retaining our customer base is to offer competitive deposit and loan rates and product features, delivered with superior customer service.

The majority of our depositors live or work in Monroe County, New York. At June 30, 2017, the latest date for which information is available through the Federal Deposit Insurance Corporation, we held approximately 1.43% of the bank deposits in Monroe County.

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Lending Activities

Our principal lending activity is the origination of first mortgage loans to purchase or refinance one- to four-family residential real estate. We also originate a significant number of home equity lines of credit. More recently, we have sought to increase our commercial and multi-family real estate and construction lending. To a lesser extent, we also originate commercial and industrial loans and other consumer loans (consisting of automobile, passbook, overdraft protection and unsecured loans). At December 31, 2017, one- to four-family residential real estate mortgage loans totaled $206.9 million, or 78.3% of our loan portfolio, home equity lines of credit totaled $17.1 million, or 6.5% of our loan portfolio, commercial real estate and multi-family loans totaled $25.5 million, or 9.7%, of our loan portfolio, construction loans totaled $10.8 million, or 4.1%, of our loan portfolio, and all other loans totaled $3.7 million, or 1.4% of our loan portfolio.

Our strategic plan continues to focus on residential real estate lending and to gradually increase our commercial lending. We generally retain in our portfolio adjustable-rate or shorter-term fixed-rate residential real estate mortgage loans. Loans that we sell into the secondary market consist of long-term (a term 15 years or longer), conforming fixed-rate residential real estate mortgage loans and correspondent FHA and VA mortgage loans. These loans are sold without recourse. We retain the servicing rights on all conforming fixed-rate residential mortgage loans that we sell to Freddie Mac. However, we also sell conforming fixed-rate residential mortgage loans servicing released to other secondary market investors. Correspondent FHA and VA mortgage loans are sold in the secondary market on a servicing-released basis. We also broker government mortgage loans with the USDA directly to investors in the secondary market for which we receive a fee. During the year ended December 31, 2017, we sold $70.1 million in long-term, fixed-rate one- to four family real estate loans in the secondary market. At December 31, 2017, we were servicing $132.4 million of loans sold to others. For the year ended December 31, 2017, we realized a gain of $2.1 million on the sale of loans, and we received servicing fees of $314,000. We may experience declines in the residential mortgage loan portfolio during 2018 if interest rates increase.

As a community bank, we are increasing our focus on commercial lending efforts to the small to medium sized business market targeting borrowers with desired loan balances of between $250,000 and $1.0 million. Our loan products include commercial real estate, multi-family, commercial construction and commercial and industrial loans. We are an approved Small Business Administration (“SBA”) lender and anticipate becoming a preferred SBA lender in 2018. As part of the commercial loan strategy, we will seek to use our commercial relationships to grow our commercial transactional deposit accounts.

Loan Portfolio Composition. The following table sets forth the composition of our loan portfolio, by type of loan at the dates indicated, excluding loans held for sale.

	At December 31,
	2017						2016						2015						2014						2013
	Amount			Percent			Amount			Percent			Amount			Percent			Amount			Percent			Amount			Percent
	(Dollars in thousands)
Real estate loans:
One- to four-family residential (1)	$	206,894			78.38	%	$	188,573			83.04	%	$	177,037			87.47	%	$	169,323			89.50	%	$	158,189			89.27	%
Home equity lines of credit		17,127			6.49			16,797			7.40			14,523			7.18			13,378			7.07			11,045			6.23
Multi-family residential		10,650			4.03			5,103			2.25			5,146			2.54			3,819			2.02			3,069			1.73
Construction (2)		10,750			4.07			6,134			2.70			1,251			0.62			1,106			0.58			2,821			1.59
Commercial		14,803			5.61			8,440			3.72			3,522			1.74			1,427			0.75			2,015			1.14
Commercial and industrial loans		3,679			1.39			1,947			0.86			853			0.42			100			0.05			—			—
Other loans		70			0.03			75			0.03			61			0.03			65			0.03			71			0.04
Total loans receivable		263,973			100.00	%		227,069			100.00	%		202,393			100.00	%		189,218			100.00	%		177,210			100.00	%
Deferred loan origination (fees) costs		(1	)					113						248						265						317
Allowance for loan losses		(1,261	)					(990	)					(811	)					(653	)					(526	)
Total loans receivable, net	$	262,711					$	226,192					$	201,830					$	188,830					$	177,001

(1) Includes $1.6 million, $1.5 million, $1.8 million, $2.0 million, and $1.9 million of closed-end home equity loans at December 31, 2017, 2016, 2015, 2014, and 2013.

(2) Represents amounts disbursed at December 31, 2017, 2016, 2015, 2014, and 2013. The undrawn amounts of the construction loans totaled $5.9 million, $5.0 million, $1.3 million, $1.1 million, and $2.6 million at December 31, 2017, 2016, 2015, 2014, and 2013, respectively.

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Loan Portfolio Maturities. The following table summarizes the scheduled repayments of our loan portfolio at December 31, 2017. Demand loans, loans having no stated repayment schedule or maturity, and overdraft loans are reported as being due in the year ending December 31, 2018. Maturities are based on the final contractual payment date and do not reflect the impact of prepayments and scheduled principal amortization.

	One- to Four-Family Residential Real Estate Loans		Home Equity Lines of Credit		Multi- Family Residential Real Estate Loans		Construction Loans		Commercial Real Estate Loans		Commercial & Industrial Loans		Other Loans		Total
Due During the Years Ending December 31,
2018	$	171	$	697	$	-	$	2,757	$	2	$	1,210	$	2	$	4,839
2019		399		-		-		1,399		-		132		4		1,934
2020		360		-		-		-		342		267		6		975
2021 to 2022		2,170		89		-		-		445		1,750		34		4,488
2023 to 2027		21,347		75		7,240		-		10,902		320		-		39,884
2028 to 2032		31,331		959		1,327		-		1,094		-		3		34,714
2033 and beyond		151,116		15,307		2,083		6,594		2,018		-		21		177,139
Total	$	206,894	$	17,127	$	10,650	$	10,750	$	14,803	$	3,679	$	70	$	263,973

The following table sets forth the scheduled repayments of fixed- and adjustable-rate loans at December 31, 2017 that are contractually due after December 31, 2018.

	Due After December 31, 2018
	Fixed		Adjustable		Total
	(In thousands)
Real estate loans:
One- to four-family residential	$	185,044	$	21,679	$	206,723
Home equity lines of credit		-		16,430		16,430
Multi-family residential		2,511		8,139		10,650
Construction		6,270		1,723		7,993
Commercial		1,230		13,571		14,801
Commercial and industrial loans		621		1,848		2,469
Other loans		68		-		68
Total	$	195,744	$	63,390	$	259,134

One- to Four-Family Residential Real Estate Mortgage Loans. Our primary lending activity is the origination of one- to four-family residential real estate mortgage loans. At December 31, 2017, $206.9 million, or 78.3% of our total loan portfolio, consisted of one- to four-family residential real estate mortgage loans. We offer conforming and non-conforming, fixed-rate and adjustable-rate residential real estate mortgage loans with maturities of up to 30 years and maximum loan amounts generally of up to $750,000. Our adjustable-rate mortgage loans provide an initial fixed interest rate for one, three, five, seven, or ten years and then adjust annually thereafter and amortize over a period of up to 30 years. We originate fixed-rate mortgage loans with terms of less than 15 years, but at interest rates applicable to our 15-year loans.

One- to four-family residential real estate mortgage loans are generally underwritten according to Freddie Mac guidelines, and we refer to loans that conform to such guidelines as “conforming loans.” We generally originate both fixed-rate and adjustable-rate mortgage loans in amounts up to the maximum conforming loan limits as established by the Office of Federal Housing Enterprise Oversight, which at December 31, 2017 was $424,000 for single-family homes in our market area. We also originate loans above the lending limit for conforming loans, commonly referred to as “jumbo loans.” At December 31, 2017, we had $26.9 million in jumbo loans. We generally underwrite jumbo loans, which are not uncommon in our market area, in a manner similar to conforming loans. For first mortgage loans with loan-to-value ratios in excess of 80% we require private mortgage insurance. We do not have any loans in our loan portfolio that are considered sub-prime or Alt-A.

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We currently offer several adjustable-rate mortgage loans secured by residential properties with interest rates that are fixed for an initial period ranging from one year to ten years. After the initial fixed period, the interest rate on adjustable-rate mortgage loans is generally reset every year based upon a contractual spread or margin above the average yield on U.S. Treasury securities, adjusted to a constant maturity of one year, as published weekly by the Federal Reserve Board, subject to periodic and lifetime limitations on interest rate changes. All of our traditional adjustable-rate mortgage loans with initial fixed-rate periods of one, three, five, seven, and ten years have initial and periodic caps of two percentage points on interest rate changes, with a cap of six percentage points for the life of the loan. Many of the borrowers who select these loans have shorter-term credit needs than those who select long-term, fixed-rate mortgage loans. We do not offer “Option ARM” loans, where borrowers can pay less than the interest owed on their loan, resulting in an increased principal balance during the life of the loan. At December 31, 2017, we had $21.7 million in adjustable-rate one- to four-family residential real estate mortgage loans. Adjustable-rate mortgage loans generally present different credit risks than fixed-rate mortgage loans primarily because the underlying debt service payments of the borrowers increase as interest rates increase, thereby increasing the potential for default.

We generally require title insurance on all of our one- to four-family residential real estate mortgage loans, and we also require that borrowers maintain fire and extended coverage casualty insurance (and, if appropriate, flood insurance) in an amount at least equal to the lesser of the loan balance or the replacement cost of the improvements. For fixed-rate mortgage loans with terms of 15 years or less, we will accept an attorney’s letter in lieu of title insurance. A majority of our residential real estate mortgage loans have a mortgage escrow account from which disbursements are made for real estate taxes and flood insurance. We do not conduct environmental testing on residential real estate mortgage loans unless specific concerns for hazards are identified by the appraiser used in connection with the origination of the loan. If we identify an environmental problem on land that will secure a loan, the environmental hazard must be remediated before the closing of the loan.

Home Equity Lines of Credit. We offer home equity lines of credit, which are primarily secured by a second mortgage on one- to four-family residences. At December 31, 2017, home equity lines of credit totaled $17.1 million, or 6.5% of total loans receivable. At that date we had an additional $16.4 million of undisbursed home equity lines of credit. We also offer “interest only” loans, where the borrower pays interest for an initial period (ten years), after which the loan converts to a fully amortizing loan with a term of 15 years.

The underwriting standards for home equity lines of credit include a determination of the applicant’s credit history, an assessment of the applicant’s ability to meet existing obligations and payments on the proposed loan and the value of the collateral securing the loan. The combined loan-to-value ratio (first and second mortgage liens) for home equity lines of credit is generally limited to 85%, or 90% if Fairport Savings Bank holds the first mortgage. We originate our home equity lines of credit without application fees or borrower-paid closing costs. Our home equity lines of credit are offered with adjustable-rates of interest indexed to the prime rate, as reported in The Wall Street Journal.

Multi-Family Residential and Commercial Real Estate Loans. Loans secured by multi-family real estate totaled $10.7 million, or 4.0%, of the total loan portfolio at December 31, 2017. Multi-family residential loans generally are secured by rental properties. All multi-family residential loans are secured by properties located within our lending area. At December 31, 2017, we had 28 multi-family loans with an average principal balance of $380,000, and the largest multi-family real estate loan had a principal balance of $1.6 million. At December 31, 2017, all of our loans secured by multi-family real estate were performing in accordance with their terms. Multi-family real estate loans are offered with fixed or adjustable interest rates. Multi-family real estate loans are originated for terms of up to 20 years. Adjustable-rate multi-family real estate loans are tied to the average yield on U.S. Treasury securities, subject to periodic and lifetime limitations on interest rate changes.

At December 31, 2017, $14.8 million, or 5.6% of our total loan portfolio, consisted of commercial real estate loans. Commercial real estate loans are secured by office buildings, mixed use properties, places of worship, motels, and other commercial properties. We generally originate adjustable-rate commercial real estate loans with maximum terms of up to 15 years. Adjustable-rate commercial real estate loans are tied to the five-year Federal Home Loan Bank advance rate plus a margin, subject to periodic and lifetime limitations on interest rate changes. The maximum loan-to-value ratio of commercial real estate loans is 80%. At December 31, 2017, we had 28 commercial real estate loans with an average principal balance of $529,000. At December 31, 2017, our largest loan secured by commercial real estate consisted of a $2.6 million loan secured by an owner occupied sports complex. At December 31, 2017, all of our loans secured by commercial real estate were performing in accordance with their terms.

We consider a number of factors in originating multi-family real estate and commercial real estate loans. We evaluate the qualifications and financial condition of the borrower (including credit history), profitability and expertise, as well as the value and condition of the mortgaged property securing the loan. When evaluating the qualifications of the borrower, we consider the financial resources of the borrower, the borrower’s experience in owning or managing similar property and the borrower’s payment history with us and other financial institutions. In evaluating the property securing the loan, the factors we consider include the net operating income of the mortgaged property before debt service and depreciation, the debt service coverage ratio (the ratio of net operating income to debt service) to ensure that it is at least 120% of the monthly debt service and the ratio of the loan amount to the appraised value of the mortgaged property. Multi-family real estate loans and commercial real estate loans are originated in amounts up to 80% of the appraised value of the mortgaged property securing the loan. All multi-family and commercial real estate loans are appraised by outside independent appraisers approved by the Board of Directors. Personal guarantees are generally obtained from commercial real estate borrowers.

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Loans secured by multi-family real estate generally involve a greater degree of credit risk than one- to four-family residential mortgage loans and carry larger loan balances. This increased credit risk is a result of several factors, including the concentration of principal in a limited number of loans and borrowers, the effects of general economic conditions on income producing properties, and the increased difficulty of evaluating and monitoring these types of loans. Furthermore, the repayment of loans secured by multi-family real estate typically depends upon the successful operation of the real estate property securing the loans. If the cash flow from the project is reduced, the borrower’s ability to repay the loan may be impaired.

Loans secured by commercial real estate generally are larger than one- to four-family residential loans and involve greater credit risk. Commercial real estate loans often involve large loan balances to single borrowers or groups of related borrowers. Repayment of these loans depends to a large degree on the results of operations and management of the properties securing the loans or the businesses conducted on such property, and may be affected to a greater extent by adverse conditions in the real estate market or the economy in general. Accordingly, the nature of these loans makes them more difficult for management to monitor and evaluate.

Construction Loans. We originate construction loans for the purchase of developed lots and for the construction of single-family residences. Construction loans are offered to individuals for the construction of their personal residences by a qualified builder which will convert to a residential mortgage loan following construction (construction/permanent loans). At December 31, 2017, construction loans totaled $10.8 million, or 4.1% of total loans receivable. At December 31, 2017, the additional unadvanced portion of these construction loans totaled $5.9 million. We also originate commercial construction loans on a limited basis. Before making a commitment to fund a construction loan, we require an appraisal of the property by an independent licensed appraiser. We generally also review and inspect each property before disbursement of funds during the term of the construction loan.

Construction financing generally involves greater credit risk than long-term financing on improved, owner-occupied real estate. Risk of loss on a construction loan depends largely upon the accuracy of the initial estimate of the value of the property at completion of construction compared to the estimated cost (including interest) of construction and other assumptions. If the estimate of construction cost proves to be inaccurate, we may be required to advance additional funds beyond the amount originally committed in order to protect the value of the property. Moreover, if the estimated value of the completed project proves to be inaccurate, the borrower may hold a property with a value that is insufficient to assure full repayment of the loan.

Commercial and Industrial Loans. At December 31, 2017, we had $3.7 million in commercial and industrial loans, which amounted to 1.4% of total loans. We make commercial and industrial loans primarily in our market area to a variety of professionals, sole proprietorships, and small businesses. Commercial lending products include term loans and revolving lines of credit. Such loans are generally used for longer-term working capital purposes such as purchasing equipment or furniture. Commercial and industrial loans are made with either adjustable or fixed rates of interest. Variable rates are based on the prime rate, as published in The Wall Street Journal, plus a margin. Fixed-rate commercial and industrial loans are set at a margin above the comparable Federal Home Loan Bank advance rate.

When making commercial and industrial loans, we consider the financial statements of the borrower, our lending history with the borrower, the debt service capabilities of the borrower, the projected cash flows of the business, and the value of the collateral. Commercial and industrial loans are generally secured by a variety of collateral, primarily accounts receivable, inventory and equipment, and are supported by personal guarantees. Depending on the collateral used to secure the loans, commercial and industrial loans are made in amounts of up to 70% of the value of the collateral securing the loan. We generally do not make unsecured commercial and industrial loans.

7

Commercial and industrial loans generally have greater credit risk than residential real estate loans. Unlike residential real estate loans, which generally are made on the basis of the borrower’s ability to make repayment from his or her employment or other income, and which are secured by real property whose value tends to be more easily ascertainable, commercial and industrial loans generally are made on the basis of the borrower’s ability to repay the loan from the cash flow of the borrower’s business. As a result, the availability of funds for the repayment of commercial and industrial loans may depend substantially on the success of the business itself. Further, any collateral securing the loans may depreciate over time, may be difficult to appraise and may fluctuate in value. We seek to minimize these risks through our underwriting standards. At December 31, 2017, our largest commercial and industrial loan was an $816,000 loan secured by equipment. This loan was performing according to its original terms at December 31, 2017.

Other Loans. We offer a variety of loans secured by property other than real estate. These loans include automobile, passbook, overdraft protection and unsecured loans. At December 31, 2017, these other loans totaled $70,000, or 0.1% of the total loan portfolio.

Loan Originations, Sales, and Servicing. Lending activities are conducted by our loan personnel operating at our main and branch office locations and through our mortgage division’s five origination offices. We also obtain referrals from existing or past customers and from local builders, real estate brokers and attorneys. All loans that we originate are underwritten pursuant to our policies and procedures, which incorporate Freddie Mac underwriting guidelines to the extent applicable. We originate both adjustable-rate and fixed-rate loans. Our ability to originate fixed or adjustable-rate loans is dependent upon the relative customer demand for such loans, which is affected by current market interest rates as well as anticipated future market interest rates. Our loan origination and sales activity may be adversely affected by a rising interest rate environment, which typically results in decreased loan demand.

Loans that we sell are sold without recourse. For the year ended December 31, 2017, we realized a gain of $2.1 million on the sale of loans, and we received servicing fees of $314,000. As of December 31, 2017, the principal balance of loans serviced for others totaled $132.4 million. Historically, we have retained the servicing rights on all residential real estate mortgage loans that we have sold. However, we have begun to sell some loans servicing released. Loan servicing includes collecting and remitting loan payments, accounting for principal and interest, contacting delinquent borrowers, supervising foreclosures and property dispositions in the event of unremedied defaults, making certain insurance and tax payments on behalf of the borrowers and generally administering the loans. We retain a portion of the interest paid by the borrower on the loans we service as consideration for our servicing activities. The value of our servicing rights was $892,000 at December 31, 2017. We have not engaged in loan purchases. We have entered into one loan participation secured by an office building for $998,000 as of December 31, 2017.

The following table shows our loan originations, sales and repayment activities for the years indicated.

	For the Year Ended December 31,
	2017		2016		2015		2014		2013
	(In thousands)
Total loans at beginning of year	$	227,069	$	202,393	$	189,218	$	177,210	$	147,576
Loan originations:
Real estate loans:
One- to four-family residential		91,167		116,331		82,368		68,977		77,181
Home equity lines of credit		6,778		5,562		5,064		5,031		3,368
Multi-family residential		5,769		318		1,602		888		1,975
Construction		20,582		14,202		5,151		4,986		8,628
Commercial		7,560		10,065		3,924		—		1,080
Commercial and industrial loans		1,631		2,612		866		100		—
Other loans		210		101		18		26		46
Total loans originated		133,697		149,191		98,993		80,008		92,278
Sales and loan principal repayments:
Principal repayments		26,690		50,547		30,508		19,750		26,524
Loan sales		70,103		73,968		55,310		48,250		36,120
Net loan activity		36,904		24,676		13,175		12,008		29,634
Total loans at end of year	$	263,973	$	227,069	$	202,393	$	189,218	$	177,210

Loan Approval Policy and Authority. Fairport Savings Bank’s lending activities follow written, non-discriminatory underwriting standards and loan origination policies approved by Fairport Savings Bank’s Board of Directors. The loan approval process is intended to assess the borrower’s ability to repay the loan and the value of the property that will secure the loan. To assess the borrower’s ability to repay, we review the borrower’s employment and credit history and information on the historical and projected income and expenses of the borrower.

8

Residential mortgage loans up to $424,000, home equity loans up to $150,000, lines of credit, personal loans, and unsecured property improvement loans up to $10,000 and automobile loans up to $35,000 may be approved by any lending officer or designee. Residential mortgage loans between $424,000 and $1.0 million, and automobile loans in excess of $35,000 may be approved by any two lending officers. Residential mortgage loans exceeding $1.0 million must be approved by any two lending officers and the Board of Directors. Commercial loans (including commercial real estate, multi-family and commercial and industrial loans) up to $1.0 million may be approved by any two members of the senior officers loan committee with Board approval required for commercial loans exceeding $1.0 million.

We generally require independent third-party appraisals of real property securing loans. Appraisals are performed by independent licensed appraisers. All appraisers are approved by the Board of Directors annually.

Loans to One Borrower. A New York savings bank generally may not make a loan or extend credit to a single or related group of borrowers in excess of 15% of unimpaired capital and surplus. An additional amount may be loaned equal to 10% of unimpaired capital and surplus if the loan is secured by readily marketable collateral, which generally does not include real estate. Our loans to one borrower limit under this regulation is $4.5 million (excluding the additional amount). At December 31, 2017, we had no loans exceeding this amount. Our policy provides that residential loans to one borrower (or related borrowers) should generally not exceed $1.5 million. At December 31, 2017, we had no loans exceeding this amount.

Non-Performing Assets and Delinquent Loans

System-generated late notices are mailed to borrowers after the late payment “grace period,” which is 15 days in the case of all loans secured by real estate and 10 days in the case of other loans. A second notice will be mailed to borrowers if the loan remains past due after 30 days. When a loan is more than 60 days past due, we attempt to contact the borrower and develop a plan of repayment. By the 90^th day of delinquency, we will have our attorneys issue a demand letter. The demand letter will require the borrowers to bring the loan current within 30 days in order to avoid the beginning of foreclosure proceedings for loans secured by real estate. With respect to automobile loans we will seek to repossess the vehicle if the loan is 90 days delinquent. A report of all loans 30 days or more past due is provided to the Board of Directors on a monthly basis.

Loans are generally placed on non-accrual status when payment of principal or interest is more than 90 days delinquent, unless the loans are well-secured and in the process of collection. Loans are also placed on non-accrual status if collection of principal or interest in full is in doubt or if the loan has been restructured. When loans are placed on a non-accrual status, unpaid accrued interest is fully reversed, and further income is recognized only to the extent received. The loan may be returned to accrual status if unpaid principal and interest are repaid so that the loan is less than 90 days delinquent and a satisfactory payment history has been established. Loans not secured by real estate will be charged-off if they become 120 days past due. At December 31, 2017, we had two non-accrual residential mortgage loans for $153,000.

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Non-Performing Assets. The table below sets forth the amounts and categories of our non-performing assets at the dates indicated. We had no troubled debt restructurings at any of the dates presented below.

	At December 31,
	2017			2016		2015			2014			2013
	(Dollars in thousands)
Non-accrual loans:
Real estate loans:
One- to four-family residential	$	153		$	—	$	63		$	56		$	56
Home equity lines of credit		—			—		18			18			—
Multi-family residential		—			—		—			—			—
Construction		—			—		—			—			—
Commercial		—			—		—			—			—
Commercial and industrial loans		—			—		—			—			—
Other loans		—			—		1			—			—
Total		153			—		82			74			56
Accruing loans 90 days or more past due:
Real estate loans:
One- to four-family residential		—			—		—			—			—
Home equity lines of credit		—			—		—			—			—
Multi-family residential		—			—		—			—			—
Construction		—			—		—			—			—
Commercial		—			—		—			—			—
Commercial and industrial loans		—			—		—			—			—
Other loans		—			—		—			—			—
Total loans 90 days or more past due		—			—		—			—			—
Total non-performing loans		153			—		82			74			56
Real estate owned		—			—		—			—			—
Other non-performing assets		—			—		—			—			—
Total non-performing assets	$	153		$	—	$	82		$	74		$	56
Ratios:
Total non-performing loans to total loans		0.06	%		—%		0.04	%		0.04	%		0.03	%
Total non-performing loans to total assets		0.05	%		—%		0.03	%		0.03	%		0.02	%
Total non-performing assets to total assets		0.05	%		—%		0.03	%		0.03	%		0.02	%

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Delinquent Loans. The following table sets forth our loan delinquencies by type, by number and amount at the dates indicated.

	Loans Delinquent For
	60-89 Days				90 Days and Over				Total
	Number		Amount		Number		Amount		Number		Amount
	(Dollars in thousands)
At December 31, 2017
Real estate loans:
One- to four-family residential		—	$	—		2	$	153		2	$	153
Home equity lines of credit		—		—		—		—		—		—
Multi-family residential		—		—		—		—		—		—
Construction		—		—		—		—		—		—
Commercial		—		—		—		—		—		—
Commercial and industrial loans		—		—		—		—		—		—
Other loans		—		—		—		—		—		—
Total		—	$	—		2	$	153		2	$	153
At December 31, 2016
Real estate loans:
One- to four-family residential		1	$	89		—	$	—		1	$	89
Home equity lines of credit		—		—		—		—		—		—
Multi-family residential		—		—		—		—		—		—
Construction		—		—		—		—		—		—
Commercial		—		—		—		—		—		—
Commercial and industrial loans		1		47		—		—		1		47
Other loans		—		—		—		—		—		—
Total		2	$	136		—	$	—		2	$	136
At December 31, 2015
Real estate loans:
One- to four-family residential		—	$	—		1	$	63		1	$	63
Home equity lines of credit		—		—		1		18		1		18
Multi-family residential		—		—		—		—		—		—
Construction		—		—		—		—		—		—
Commercial		—		—		—		—		—		—
Commercial and industrial loans		—		—		—		—		—		—
Other loans		—		—		1		1		1		1
Total		—	$	—		3	$	82		3	$	82
At December 31, 2014
Real estate loans:
One- to four-family residential		1	$	93		1	$	56		2	$	149
Home equity lines of credit		—		—		1		18		1		18
Multi-family residential		—		—		—		—		—		—
Construction		—		—		—		—		—		—
Commercial		—		—		—		—		—		—
Commercial and industrial loans		—		—		—		—		—		—
Other loans		—		—		—		—		—		—
Total		1	$	93		2	$	74		3	$	167
At December 31, 2013
Real estate loans:
One- to four-family residential		—	$	—		1	$	56		1	$	56
Home equity lines of credit		—		—		—		—		—		—
Multi-family residential		—		—		—		—		—		—
Construction		—		—		—		—		—		—
Commercial		—		—		—		—		—		—
Commercial and industrial loans		—		—		—		—		—		—
Other loans		—		—		—		—		—		—
Total		—	$	—		1	$	56		1	$	56

Foreclosed Real Estate. Real estate acquired by us as a result of foreclosure or by deed in lieu of foreclosure is classified as foreclosed real estate until sold. When property is acquired it is recorded at the estimated fair market value less cost to sell at the date of foreclosure, establishing a new cost basis. Estimated fair value generally represents the sale price a buyer would be willing to pay on the basis of current market conditions, including normal terms from other financial institutions, less the estimated costs to sell the property. Holding costs and declines in estimated fair market value result in charges to expense after acquisition. At December 31, 2017, we had no foreclosed real estate.

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Classification of Assets. Our policies, consistent with regulatory guidelines, provide for the classification of loans and other assets that are considered to be of lesser quality as substandard, doubtful, or loss assets. An asset is considered substandard if it is inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Substandard assets include those assets characterized by the distinct possibility that we will sustain some loss if the deficiencies are not corrected. Assets classified as doubtful have all of the weaknesses inherent in those classified substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Assets (or portions of assets) classified as loss are those considered uncollectible and of such little value that their continuance as assets is not warranted. Assets that do not expose us to risk sufficient to warrant classification in one of the aforementioned categories, but which possess potential weaknesses that deserve our close attention, are required to be designated as special mention. As of December 31, 2017, we had one residential mortgage loan for $116,000 designated as special mention.

When we classify assets as either substandard, doubtful, or loss we allocate a portion of the related general loss allowances to such assets as we deem prudent. The allowance for loan losses is the amount estimated by management as necessary to absorb credit losses incurred in the loan portfolio that are both probable and reasonably estimable at the balance sheet date. Our determination as to the classification of our assets and the amount of our loss allowances are subject to review by our regulators, the New York State Department of Financial Services and the Federal Deposit Insurance Corporation, which can require that we establish additional loss allowances. We regularly review our asset portfolio to determine whether any assets require classification in accordance with applicable regulations. On the basis of our review of our assets, at December 31, 2017, classified assets consisted of 21 substandard loans totaling $3.2 million and no assets classified as doubtful or loss.

Allowance for Loan Losses

We provide for loan losses based on the allowance method. Accordingly, all loan losses are charged to the related allowance and all recoveries are credited to it. Additions to the allowance for loan losses are provided by charges to income based on various factors which, in our judgment, deserve current recognition in estimating probable losses. We regularly review the loan portfolio and make provisions for loan losses in order to maintain the allowance for loan losses in accordance with accounting principles generally accepted in the United States of America (“GAAP”).

The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.

The allowance consists of specific, general, and unallocated components. The specific component relates to loans that are classified as doubtful, substandard or special mention. For such loans that are also classified as impaired, an allowance is generally established when the collateral value of the impaired loan is lower than the carrying value of that loan. The general component covers non-classified loans and is based on historical loss experience adjusted for qualitative factors. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.

A loan is considered impaired when, based on current information and events, it is probable that we will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management considers the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent.

Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, we do not separately identify individual consumer and residential loans for impairment disclosures.

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We periodically evaluate the carrying value of loans and the allowance is adjusted accordingly. While we use the best information available to make evaluations, future adjustments to the allowance may be necessary if conditions differ substantially from the information used in making the evaluations. In addition, as an integral part of their examination process, the New York State Department of Financial Services and the Federal Deposit Insurance Corporation periodically review the allowance for loan losses. These regulators may require us to recognize additions to the allowance based on their analysis of information available to them at the time of their examination.

The following table sets forth activity in our allowance for loan losses for the years indicated.

	At or For the Years Ended December 31,
	2017			2016			2015			2014			2013
	(Dollars in thousands)
Balance at beginning of year	$	990		$	811		$	653		$	526		$	436
Charge-offs:
Real estate loans:
One- to four-family residential		—			—			—			—			—
Home equity lines of credit		—			—			—			—			—
Multi-family residential		—			—			—			—			—
Construction		—			—			—			—			—
Commercial		—			—			—			—			—
Commercial and industrial loans		—			—			—			—			—
Other loans		—			(1	)		—			—			—
Total charge-offs		—			(1	)		—			—			—
Recoveries:
Real estate loans:
One- to four-family residential		—			—			—			—			—
Home equity lines of credit		—			—			—			—			—
Multi-family residential		—			—			—			—			—
Construction		—			—			—			—			—
Commercial		—			—			—			—			—
Commercial and industrial loans		—			—			—			—			—
Other loans		—			—			—			—			—
Total recoveries		—			—			—			—			—
Net charge-offs		—			(1	)		—			—			—
Provision for loan losses		271			180			158			127			90
Balance at end of year	$	1,261		$	990		$	811		$	653		$	526
Ratios:
Net charge-offs to average loans outstanding		—			—			—			—			—
Allowance for loan losses to non-performing loans at end of year		825.59	%		N/A			994.92	%		883.71	%		939.29	%
Allowance for loan losses to total loans at end of year		0.48	%		0.44	%		0.40	%		0.34	%		0.30	%

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Allocation of Allowance for Loan Losses. The following table sets forth the allowance for loan losses allocated by loan category, the total loan balances by category, and the percent of loans in each category to total loans at the dates indicated. The allowance for loan losses allocated to each category is not necessarily indicative of future losses in any particular category and does not restrict the use of the allowance to absorb losses in other categories.

	At December 31,
	2017								2016								2015
	Amount		Percent of Allowance to Total Allowance			Percent of Loans in Category to Total Loans			Amount		Percent of Allowance to Total Allowance			Percent of Loans in Category to Total Loans			Amount		Percent of Allowance to Total Allowance			Percent of Loans in Category to Total Loans
	(Dollars in thousands)
Real estate loans:
One- to four-family residential	$	816		64.71	%		78.38	%	$	584		58.99	%		83.04	%	$	524		64.61	%		87.47	%
Home equity lines of credit		107		8.49			6.49			112		11.31			7.40			101		12.45			7.18
Multi-family residential		80		6.34			4.03			38		3.84			2.25			39		4.81			2.54
Construction		54		4.28			4.07			31		3.13			2.70			6		0.74			0.62
Commercial		148		11.74			5.61			84		8.49			3.72			35		4.32			1.74
Commercial and industrial loans		47		3.73			1.39			28		2.83			0.86			11		1.36			0.42
Other loans		1		0.08			0.03			1		0.10			0.03			1		0.12			0.03
Total allocated allowance		1,253		99.37			100.00			878		88.69			100.00			717		88.41			100.00
Unallocated allowance		8		0.63			—			112		11.31			—			94		11.59			—
Total allowance for loan losses	$	1,261		100.00	%		100.00	%	$	990		100.00	%		100.00	%	$	811		100.00	%		100.00	%

	At December 31,
	2014								2013
	Amount		Percent of Allowance to Total Allowance			Percent of Loans in Category to Total Loans			Amount		Percent of Allowance to Total Allowance			Percent of Loans in Category to Total Loans
	(Dollars in thousands)
Real estate loans:
One- to four-family residential	$	448		68.62	%		89.50	%	$	404		76.81	%		89.27	%
Home equity lines of credit		87		13.32			7.07			55		10.46			6.23
Multi-family residential		29		4.44			2.02			23		4.37			1.73
Construction		6		0.92			0.58			14		2.66			1.59
Commercial		14		2.14			0.75			20		3.80			1.14
Commercial and industrial loans		1		0.15			0.05			—		—			—
Other loans		1		0.15			0.03			1		0.19			0.04
Total allocated allowance		586		89.74			100.00			517		98.29			100.00
Unallocated allowance		67		10.26			—			9		1.71			—
Total allowance for loan losses	$	653		100.00	%		100.00	%	$	526		100.00	%		100.00	%

Investments

Our Board of Directors is responsible for approving and overseeing our investment policy. The investment policy is reviewed at least annually by management and any changes to the policy are recommended to the Board of Directors and are subject to its approval. This policy dictates that investment decisions be made based on the safety of the investment, liquidity requirements, potential returns, the ability to provide collateral for pledging requirements, and consistency with our interest rate risk management strategy. Our asset/liability management committee, which consists of our chief executive officer, principal financial officer and other members of management, oversees our investing activities and strategies. All transactions are formally reviewed by the Board of Directors at least quarterly. Any investment which, subsequent to its purchase, fails to meet the guidelines of the policy is reported to the asset/liability management committee, which decides whether to hold or sell the investment.

Our current investment policy permits us to invest in debt securities issued by the U.S. Government, agencies of the U.S. Government or U.S. Government-sponsored enterprises. The policy also permits investments in mortgage-backed securities, including pass-through securities issued and guaranteed by Fannie Mae, Freddie Mac and Ginnie Mae. We also may hold investments in New York State municipal obligations. The investment policy also permits investments in asset-backed securities, pooled trust securities, bankers’ acceptances, money market funds, term federal funds, repurchase agreements and reverse repurchase agreements.

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Our current investment policy prohibits hedging through the use of such instruments as financial futures, interest rate options and swaps.

Debt and equity securities investment accounting guidance requires that, at the time of purchase, we designate a security as held to maturity, available for sale, or trading, depending on our ability and intent. Securities available for sale are reported at fair value, while securities held to maturity are reported at amortized cost. We do not have a trading portfolio.

U.S. Government and Agency Obligations. U.S. Government and agency securities are utilized as shorter-term investment vehicles. Investment in U.S. Government and agency securities provide lower yields than loans, however, they provide greater liquidity on a short-term basis.

Mortgage-Backed Securities. We purchase both fixed-rate and adjustable-rate mortgage-backed securities insured or guaranteed by Fannie Mae, Freddie Mac or Ginnie Mae. We invest in mortgage-backed securities to achieve interest income and monthly cash flow with minimal administrative expense, and to lower our credit risk as a result of the guarantees provided by Freddie Mac, Federal Farm Credit, Fannie Mae or Ginnie Mae.

Mortgage-backed securities are created by the pooling of mortgages and the issuance of a security with an interest rate that is less than the interest rate on the underlying mortgages. Mortgage-backed securities typically represent a participation interest in a pool of single-family or multi-family mortgages, although we invest only in mortgage-backed securities backed by one- to four-family mortgages. The issuers of such securities (generally Ginnie Mae, a U.S. Government agency, and U.S. government sponsored enterprises, such as Fannie Mae, Federal Farm Credit, and Freddie Mac) pool and resell the participation interests in the form of securities to investors such as Fairport Savings Bank, and guarantee the payment of principal and interest to investors. Mortgage-backed securities generally yield less than the loans that underlie such securities because of the cost of payment guarantees and credit enhancements. However, mortgage-backed securities are more liquid than individual mortgage loans since there is an active trading market for such securities. In addition, mortgage-backed securities may be used to collateralize our specific liabilities and obligations. Investments in mortgage-backed securities involve a risk that actual payments will be greater or less than the prepayment rate estimated at the time of purchase, which may require adjustments to the amortization of any premium or acceleration of any discount relating to such interests, thereby affecting the net yield on our securities. We periodically review current prepayment speeds to determine whether prepayment estimates require modification that could cause amortization or accretion adjustments. Our mortgage-backed securities portfolio contains no sub-prime mortgage loans and has no exposure to sub-prime investment activity.

State and Municipal Securities. We purchase state and municipal securities consisting of general obligation bonds backed by the full faith and credit of local municipalities located only in Monroe County, New York, such as townships and school districts.

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The following table sets forth the amortized cost and fair value of our securities portfolio (excluding Federal Home Loan Bank of New York common stock) at the dates indicated.

	At December 31,
	2017				2016				2015
	Amortized Cost		Fair Value		Amortized Cost		Fair Value		Amortized Cost		Fair Value
	(In thousands)
Securities available for sale:
U.S. Government and agency obligations	$	10,612	$	10,470	$	8,106	$	7,999	$	6,000	$	5,968
Mortgage-backed securities		7,909		7,843		9,769		9,748		13,974		14,000
Total securities available for sale	$	18,521	$	18,313	$	17,875	$	17,747	$	19,974	$	19,968
Securities held to maturity:
U.S. Government and agency obligations	$	—	$	—	$	—	$	—	$	6,793	$	6,922
State and municipal securities		5,938		5,942		6,675		6,626		4,651		4,726
Mortgage-backed securities		637		646		745		758		1,535		1,574
Total securities held to maturity	$	6,575	$	6,588	$	7,420	$	7,384	$	12,979	$	13,222

Portfolio Maturities and Yields. The composition and maturities of the investment securities portfolio and the mortgage-backed securities portfolio at December 31, 2017 are summarized in the following table. Maturities are based on the final contractual payment dates, and do not reflect the impact of prepayments or early redemptions that may occur. The state and municipal securities have not been adjusted to a tax-equivalent basis.

	One Year or Less					More than One Year through Five Years					More than Five Years through Ten Years					More than Ten Years					Total Securities
	Amortized Cost		Weighted Average Yield			Amortized Cost		Weighted Average Yield			Amortized Cost		Weighted Average Yield			Amortized Cost		Weighted Average Yield			Amortized Cost		Fair Value		Weighted Average Yield
	(Dollars in thousands)
Securities available for sale:
U.S. Government and agency obligations	$	—		—	%	$	8,607		1.42	%	$	1,005		1.66	%	$	1,000		2.50	%	$	10,612	$	10,470		1.55	%
Mortgage-backed securities		—		—	%		—		—	%		—		—	%		7,909		1.60	%		7,909		7,843		1.60	%
Total securities available for sale	$	—		—	%	$	8,607		1.42	%	$	1,005		1.66	%	$	8,909		1.70	%	$	18,521	$	18,313		1.57	%
Securities held to maturity:
State and municipal securities	$	839		1.32	%		3,302		1.64	%		1,797		2.10	%	$	—		—	%	$	5,938	$	5,942		1.73	%
Mortgage-backed securities		—		—	%		—		—	%		—		—	%		637		3.14	%		637		646		3.14	%
Total securities held to maturity	$	839		1.32	%	$	3,302		1.64	%	$	1,797		2.10	%	$	637		3.14	%	$	6,575	$	6,588		1.87	%

Sources of Funds

General. Deposits traditionally have been our primary source of funds for our lending and investment activities. We also borrow, primarily from the Federal Home Loan Bank of New York, to supplement cash flow needs, to lengthen the maturities of liabilities for interest rate risk management purposes and to manage our cost of funds. Our additional sources of funds are scheduled loan payments, loan prepayments, maturing investments, mortgage-backed securities amortizations and prepayments, proceeds of loan sales, and retained earnings.

Deposits. We generate deposits primarily from the areas in which our branch offices are located. We rely on our competitive pricing, convenient locations and customer service to attract and retain deposits. We offer a variety of deposit accounts with a range of interest rates and terms. Our deposit accounts consist of savings accounts, NOW accounts, money market accounts, certificates of deposit and individual retirement accounts and non-interest-bearing demand deposits. We currently do not accept brokered deposits.

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Interest rates paid, maturity terms, service fees and withdrawal penalties are established on a periodic basis. Deposit rates and terms are based primarily on current operating strategies and market interest rates, liquidity requirements, interest rates paid by competitors and our deposit growth goals.

At December 31, 2017, our deposits totaled $216.7 million. At December 31, 2017, NOW accounts totaled $31.8 million, savings accounts totaled $25.4 million, money market accounts totaled $37.8 million and non-interest-bearing checking accounts totaled $8.4 million. At December 31, 2017, certificates of deposit, including individual retirement accounts (all of which were certificate of deposit accounts), totaled $113.3 million, of which $55.7 million had remaining maturities of one year or less. Based on historical experience and our current pricing strategy, we believe we will retain a large portion of these accounts upon maturity.

The following table sets forth the distribution of our average total deposit accounts, by account type, for the years indicated.

	For the Years Ended December 31,
	2017								2016								2015
	Average Balance		Percent			Weighted Average Rate			Average Balance		Percent			Weighted Average Rate			Average Balance		Percent			Weighted Average Rate
	(Dollars in thousands)
Deposit type:
NOW	$	29,659		15.04	%		0.30	%	$	28,437		15.27	%		0.26	%	$	26,681		15.07	%		0.14	%
Savings		26,488		13.43			0.39			27,410		14.71			0.37			28,651		16.18			0.44
Money market		34,330		17.41			0.83			24,643		13.23			0.41			21,480		12.13			0.29
Individual retirement accounts		7,081		3.59			1.05			7,442		4.00			0.86			9,942		5.62			1.06
Certificates of deposit		91,103		46.20			1.38			87,806		47.14			1.25			83,574		47.21			1.10
Non-interest-bearing demand deposits		8,526		4.33			—			10,534		5.65			—			6,704		3.79			—
Total deposits	$	197,187		100.00	%		0.92	%	$	186,272		100.00	%		0.77	%	$	177,032		100.00	%		0.71	%

As of December 31, 2017, the aggregate amount of our outstanding certificates of deposit in amounts greater than or equal to $100,000 was approximately $61.0 million. The following table sets forth the maturity of those certificates as of December 31, 2017.

	At December 31, 2017
	(In thousands)
Three months or less	$	9,785
Over three months through six months		4,941
Over six months through one year		13,587
Over one year to three years		28,996
Over three years		3,653
Total	$	60,962

Borrowings. Our long-term borrowings consist primarily of advances from the Federal Home Loan Bank of New York. At December 31, 2017, we had the ability to borrow approximately $166.2 million under our credit facilities with the Federal Home Loan Bank of New York, of which $64.4 million was advanced. Borrowings from the Federal Home Loan Bank of New York are secured by our investment in the common stock of the Federal Home Loan Bank of New York as well as by a blanket pledge of our mortgage portfolio not otherwise pledged.

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The following table sets forth information concerning balances and interest rates on our Federal Home Loan Bank advances at and for the years shown:

	At or For the Years Ended December 31,
	2017			2016			2015
	(Dollars in thousands)
Balance at end of year	$	64,447		$	56,813		$	46,092
Average balance during year	$	60,457		$	46,990		$	48,675
Maximum outstanding at any month end	$	69,524		$	56,813		$	52,109
Weighted average interest rate at end of year		1.73	%		1.49	%		1.55	%
Weighted average interest rate during year		1.60	%		1.53	%		1.53	%

We also have a repurchase agreement with Raymond James Financial providing an additional $10.0 million in liquidity collateralized by our U.S. Government obligations. There were no advances outstanding under the repurchase agreement at December 31, 2017. In addition, we also have an unsecured line of credit through Atlantic Community Bankers Bank providing an additional $5.0 million in liquidity. There were no draws or outstanding balances from the line of credit at December 31, 2017.

Other Services. Over the past three years we have focused on developing our electronic service offerings to stay relevant with the younger generation of banking consumers.  Two of the major services that have demonstrated a high level of growth are mobile banking and online bill pay. While online bill pay has become a standard service that most banks offer, our online bill paying service has additional functionality that allows customers to send person-to-person payments using just an email address or phone number. From the mobile banking application, a customer can pay their bills as well as send person-to-person payments. In early 2016, we implemented online account opening. We intend to continue to expand our internet and mobile banking services as we grow.

Subsidiary Activities

Fairport Wealth Management, the Bank’s wholly owned subsidiary, provides investment advisory services to our customers by providing annuities, insurance products and mutual funds in partnership with Infinex Investments, Inc. At December 31, 2017, we derived $174,000 of fee income from Fairport Wealth Management.

Personnel

As of December 31, 2017, we had 83 full-time employees and eight part-time employees. Our employees are not represented by any collective bargaining group. Management believes that our relationship with our employees is good.

REGULATION AND SUPERVISION

General

Fairport Savings Bank is a stock savings bank organized under the laws of the State of New York. The lending, investment, and other business operations of Fairport Savings Bank are governed by New York law and regulations, as well as applicable federal law and regulations, and Fairport Savings Bank is prohibited from engaging in any operations not authorized by such laws and regulations. Fairport Savings Bank is subject to extensive regulation, supervision and examination by the New York State Department of Financial Services and the Federal Deposit Insurance Corporation. This regulation and supervision establishes a comprehensive framework of activities in which an institution may engage and is intended primarily for the protection of the Federal Deposit Insurance Corporation’s deposit insurance fund and depositors, and not for the protection of security holders. Fairport Savings Bank also is a member of and owns stock in the Federal Home Loan Bank of New York, which is one of the 11 regional banks in the Federal Home Loan Bank System.

Under this system of regulation, the regulatory authorities have extensive discretion in connection with their supervisory, enforcement, rulemaking and examination activities and policies, including rules or policies that: establish minimum capital levels; restrict the timing and amount of dividend payments; govern the classification of assets; determine the adequacy of loan loss reserves for regulatory purposes; and establish the timing and amounts of assessments and fees. Moreover, as part of their examination authority, the banking regulators assign numerical ratings to banks and savings institutions relating to capital, asset quality, management, liquidity, earnings and other factors. These ratings are inherently subjective and the receipt of a less than satisfactory rating in one or more categories may result in enforcement action by the banking regulators against a financial institution. A less than satisfactory rating may also prevent a financial institution, such as Fairport Savings Bank or its holding company, from obtaining necessary regulatory approvals to access the capital markets, pay dividends, acquire other financial institutions or establish new branches.

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In addition, we must comply with significant anti-money laundering and anti-terrorism laws and regulations, Community Reinvestment Act laws and regulations, and fair lending laws and regulations. Government agencies have the authority to impose monetary penalties and other sanctions on institutions that fail to comply with these laws and regulations, which could significantly affect our business activities, including our ability to acquire other financial institutions or expand our branch network.

As a bank holding company, FSB Bancorp is required to comply with the rules and regulations of the Federal Reserve Board. The Company is required to file certain reports with the Federal Reserve Board and is subject to examination by and the enforcement authority of the Federal Reserve Board. FSB Bancorp is also subject to the rules and regulations of the Securities and Exchange Commission under the federal securities laws.

Any change in applicable laws or regulations, whether by the New York State Department of Financial Services, the Federal Deposit Insurance Corporation, the Federal Reserve Board or Congress, could have a material adverse impact on the operations and financial performance of FSB Bancorp and Fairport Savings Bank.

Set forth below is a brief description of material regulatory requirements that are or will be applicable to Fairport Savings Bank and FSB Bancorp. The description is limited to certain material aspects of the statutes and regulations addressed, and is not intended to be a complete description of such statutes and regulations and their effects on Fairport Savings Bank and FSB Bancorp.

Dodd-Frank Act

The Dodd-Frank Wall Street Reform and Consumer Protection Act (“Dodd-Frank Act”) was enacted in 2010. The Dodd-Frank Act has significantly changed the bank regulatory structure and is affecting the lending, investment, trading and operating activities of depository institutions and their holding companies.

The Dodd-Frank Act created a new Consumer Financial Protection Bureau with expansive powers to supervise and enforce consumer protection laws. The Consumer Financial Protection Bureau has broad rule-making authority for a wide range of consumer protection laws that apply to all banks and savings institutions, including the authority to prohibit “unfair, deceptive or abusive” acts and practices. The Consumer Financial Protection Bureau has examination and enforcement authority over all banks and savings institutions with more than $10 billion in assets. Banks and savings institutions with $10 billion or less in assets, such as Fairport Savings Bank, will continue to be examined for compliance with these laws by their applicable federal bank regulators. The legislation gave state attorneys general the ability to enforce applicable federal consumer protection laws and weakened federal preemption of state laws as to federal saving banks in certain respects.

The Dodd-Frank Act also broadened the base for Federal Deposit Insurance Corporation assessments for deposit insurance, permanently increased the maximum amount of deposit insurance to $250,000 per depositor. The Dodd-Frank Act also provided for originators of certain securitized loans to retain a percentage of the risk for transferred credits, directed the Federal Reserve Board to regulate pricing of certain debit card interchange fees, repealed restrictions on paying interest on checking accounts and contained a number of reforms related to mortgage origination. The Dodd-Frank Act increased stockholder influence over Boards of Directors by requiring companies to give stockholders a non-binding vote on executive compensation and so-called “golden parachute” payments.

The Dodd-Frank Act also required the Consumer Financial Protection Bureau to issue regulations requiring lenders to make a reasonable, good faith determination as to the ability of a prospective borrower to repay a residential mortgage loan. The “Ability to Repay” final rule, effective January 1, 2014, established a “qualified mortgage” safe harbor from liability for loans which have terms and features which are deemed to make the loan less risky.

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New York Bank Regulation

Fairport Savings Bank derives its lending, investment, branching and other authority primarily from the applicable provisions of New York State Banking Law and the regulations of the New York State Department of Financial Services, as limited by federal laws and regulations. Under these laws and regulations, savings banks, including Fairport Savings Bank, may invest in real estate mortgages, consumer and commercial loans, certain types of debt securities, including certain corporate debt securities and obligations of federal, state and local governments and agencies, certain types of corporate equity securities and certain other assets. Under the statutory authority for investing in equity securities, a savings bank may invest up to 7.5% of its assets in corporate stock. Investment in the stock of a single corporation is limited to the lesser of 2% of the outstanding stock of such corporation or 1% of the savings bank’s assets, except as set forth below. Such equity securities must meet certain earnings ratios and other tests of financial performance. A savings bank’s lending powers are not subject to percentage of assets limitations, although there are limits applicable to single borrowers. A savings bank may also, pursuant to the “leeway” power, make investments not otherwise permitted under the New York State Banking Law. This power permits investments in otherwise impermissible investments of up to 1% of assets in any single investment, subject to certain restrictions and to an aggregate limit for all such investments of up to 5% of assets. Additionally, in lieu of investing in such securities in accordance with and reliance upon the specific investment authority set forth in the New York State Banking Law, savings banks are authorized to elect to invest under a “prudent person” standard in a wider range of investment securities as compared to the types of investments permissible under such specific investment authority. However, in the event a savings bank elects to utilize the “prudent person” standard, it will be unable to avail itself of the other provisions of the New York State Banking Law and regulations, which set forth specific investment authority. Fairport Savings Bank has not elected to conduct its investment activities under the “prudent person” standard. A savings bank may also exercise trust powers upon approval of the New York State Department of Financial Services. Fairport Savings Bank does not presently have trust powers.

New York State chartered savings banks may also invest in subsidiaries under their service corporation investment authority. A savings bank may use this power to invest in corporations that engage in various activities authorized for savings banks, plus any additional activities that may be authorized by the New York State Department of Financial Services. Investment by a savings bank in the stock, capital notes and debentures of its service corporations is limited to 3% of the bank’s assets, and such investments, together with the bank’s loans to its service corporations, may not exceed 10% of the savings bank’s assets.

Under the New York State Banking Law, the Superintendent may issue an order to a New York State chartered banking institution to appear and explain an apparent violation of law, to discontinue unauthorized or unsafe practices and to keep prescribed books and accounts. Upon a finding by the New York State Department of Financial Services that any director, trustee or officer of any banking organization has violated any law, or has continued unauthorized or unsafe practices in conducting the business of the banking organization after having been notified by the Superintendent to discontinue such practices, such director, trustee or officer may be removed from office after notice and an opportunity to be heard. Fairport Savings Bank does not know of any past or current practice, condition or violation that may lead to any proceeding by the Superintendent or the New York State Department of Financial Services against Fairport Savings Bank or any of its directors or officers.

New York State Community Reinvestment Regulation

Fairport Savings Bank is also subject to provisions of the New York State Banking Law, which imposes continuing and affirmative obligations upon banking institutions organized in New York State to serve the credit needs of its local community (“NYCRA”) which are substantially similar to those imposed by the Community Reinvestment Act. Pursuant to the NYCRA, a bank must file an annual NYCRA report and copies of all federal CRA reports with the New York State Department of Financial Services. The NYCRA requires the New York State Department of Financial Services to make a biennial written assessment of a bank’s compliance with the NYCRA, utilizing a four-tiered rating system and make such assessment available to the public. The NYCRA also requires the Superintendent to consider a bank’s NYCRA rating when reviewing a bank’s application to engage in certain transactions, including mergers, asset purchases and the establishment of branch offices or automated teller machines, and provides that such assessment may serve as a basis for the denial of any such application. Fairport Savings Bank underwent an examination in 2014 and in 2017 received the report for which a satisfactory NYCRA rating was issued from the New York State Department of Financial Services.

Federal Bank Regulation

Capital Requirements. Federal regulations require state banks to meet several minimum capital standards: a common equity Tier 1 capital to risk-based assets ratio of 4.5%; a Tier 1 capital to risk-based assets ratio of 6.0%; a total capital to risk-based assets ratio of 8%; and a 4% Tier 1 capital to total assets leverage ratio. These capital requirements were effective January 1, 2015 and are the result of regulations implementing recommendations of the Basel Committee on Banking Supervision and certain requirements of the Dodd-Frank Act.

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As noted, the risk-based capital standards for state banks require the maintenance of common equity Tier 1 capital, Tier 1 capital and total capital to risk-weighted assets ratios of at least 4.5%, 6% and 8%, respectively. In determining the amount of risk-weighted assets, all assets, including certain off-balance sheet assets (e.g., recourse obligations, direct credit substitutes, residual interests) are multiplied by a risk weight factor (from 0.0% to 200.0%) assigned by the regulations based on the risks believed inherent in the type of asset. Higher levels of capital are required for asset categories believed to present greater risk. Common equity Tier 1 capital is generally defined as common stockholders’ equity and retained earnings. Tier 1 capital is generally defined as common equity Tier 1 and additional Tier 1 capital. Additional Tier 1 capital includes certain noncumulative perpetual preferred stock and related surplus and minority interests in equity accounts of consolidated subsidiaries. Total capital includes Tier 1 capital (common equity Tier 1 capital plus additional Tier 1 capital) and Tier 2 capital. Tier 2 capital is comprised of capital instruments and related surplus, meeting specified requirements, and may include cumulative preferred stock and long-term perpetual preferred stock, mandatory convertible securities, intermediate preferred stock and subordinated debt. Also included in Tier 2 capital is the allowance for loan and lease losses limited to a maximum of 1.25% of risk-weighted assets and, for institutions that have exercised an opt-out election regarding the treatment of Accumulated Other Comprehensive Income, up to 45% of net unrealized gains on available-for-sale equity securities with readily determinable fair market values. Calculation of all types of regulatory capital is subject to deductions and adjustments specified in the regulations. In assessing an institution’s capital adequacy, the Federal Reserve takes into consideration not only these numeric factors, but qualitative factors as well, and has the authority to establish higher capital requirements for individual institutions where necessary.

In addition to establishing the minimum regulatory capital requirements, the regulations limit capital distributions and certain discretionary bonus payments to management if the institution does not hold a “capital conservation buffer” consisting of 2.5% of common equity Tier 1 capital to risk-weighted assets above the amount necessary to meet its minimum risk-based capital requirements. The capital conservation buffer requirement was phased in beginning January 1, 2016 at 0.625% of risk-weighted assets and will be increasing each year until fully implemented at 2.5% on January 1, 2019. Beginning on January 1, 2018, the capital conservation buffer requirement is 1.875% of risk-weighted assets.

The Federal Deposit Insurance Corporation Improvement Act required each federal banking agency to revise its risk-based capital standards for insured institutions to ensure that those standards take adequate account of interest-rate risk, concentration of credit risk, and the risk of nontraditional activities, as well as to reflect the actual performance and expected risk of loss on multi-family residential loans. The Federal Deposit Insurance Corporation, along with the other federal banking agencies, adopted a regulation providing that the agencies will take into account the exposure of a bank’s capital and economic value to changes in interest rate risk in assessing a bank’s capital adequacy. The Federal Deposit Insurance Corporation also has authority to establish individual minimum capital requirements in appropriate cases upon determination that an institution’s capital level is, or is likely to become, inadequate in light of the particular circumstances.

Standards for Safety and Soundness. As required by statute, the federal banking agencies adopted final regulations and Interagency Guidelines Establishing Standards for Safety and Soundness to implement safety and soundness standards. The guidelines set forth the safety and soundness standards that the federal banking agencies use to identify and address problems at insured depository institutions before capital becomes impaired. The guidelines address internal controls and information systems, internal audit system, credit underwriting, loan documentation, interest rate exposure, asset growth, asset quality, earnings and compensation, fees and benefits. The agencies have also established standards for safeguarding customer information. If the appropriate federal banking agency determines that an institution fails to meet any standard prescribed by the guidelines, the agency may require the institution to submit to the agency an acceptable plan to achieve compliance with the standard.

Investment Activities. All Federal Deposit Insurance Corporation insured banks, including savings banks, are generally limited in their equity investment activities to equity investments of the type and in the amount authorized for national banks, notwithstanding state law, subject to certain exceptions. In addition, a state bank may engage in state-authorized activities or investments not permissible for national banks (other than non-subsidiary equity investments) if it meets all applicable capital requirements and it is determined by the Federal Deposit Insurance Corporation that such activities or investments do not pose a significant risk to the Deposit Insurance Fund.

Interstate Banking and Branching. Federal law permits well capitalized and well managed holding companies to acquire banks in any state, subject to Federal Reserve Board approval, certain concentration limits and other specified conditions. Interstate mergers of banks are also authorized, subject to regulatory approval and other specified conditions. In addition, among other things, recent amendments made by the Dodd-Frank Act permit banks to establish de novo branches on an interstate basis provided that branching is authorized by the law of the host state for the banks chartered by that state.

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Prompt Corrective Regulatory Action. Federal law requires, among other things, that federal bank regulatory authorities take “prompt corrective action” with respect to banks that do not meet minimum capital requirements. For these purposes, the law establishes five capital categories: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized and critically undercapitalized.

The Federal Deposit Insurance Corporation has adopted regulations to implement the prompt corrective action legislation. The regulations were amended to incorporate the previously mentioned increased regulatory capital standards that were effective January 1, 2015. An institution is deemed to be “well capitalized” if it has a total risk-based capital ratio of 10.0% or greater, a Tier 1 risk-based capital ratio of 8.0% or greater, a leverage ratio of 5.0% or greater and a common equity Tier 1 ratio of 6.5% or greater. An institution is “adequately capitalized” if it has a total risk-based capital ratio of 8.0% or greater, a Tier 1 risk-based capital ratio of 6.0% or greater, a leverage ratio of 4.0% or greater and a common equity Tier 1 ratio of 4.5% or greater. An institution is “undercapitalized” if it has a total risk-based capital ratio of less than 8.0%, a Tier 1 risk-based capital ratio of less than 6.0%, a leverage ratio of less than 4.0% or a common equity Tier 1 ratio of less than 4.5%. An institution is deemed to be “significantly undercapitalized” if it has a total risk-based capital ratio of less than 6.0%, a Tier 1 risk-based capital ratio of less than 4.0%, a leverage ratio of less than 3.0%, or a common equity Tier 1 ratio of less than 3.0%. An institution is considered to be “critically undercapitalized” if it has a ratio of tangible equity (as defined in the regulations) to total assets that is equal to or less than 2.0%.

At each successive lower capital category, an insured depository institution is subject to more restrictions and prohibitions, including restrictions on growth, restrictions on interest rates paid on deposits, restrictions or prohibitions on payment of dividends, and restrictions on the acceptance of brokered deposits. Furthermore, if an insured depository institution is classified in one of the undercapitalized categories, it is required to submit a capital restoration plan to the appropriate federal banking agency, and the holding company must guarantee the performance of that plan. Based upon its capital levels, a bank that is classified as well-capitalized, adequately capitalized, or undercapitalized may be treated as though it were in the next lower capital category if the appropriate federal banking agency, after notice and opportunity for hearing, determines that an unsafe or unsound condition, or an unsafe or unsound practice, warrants such treatment. An undercapitalized bank’s compliance with a capital restoration plan is required to be guaranteed by any company that controls the undercapitalized institution in an amount equal to the lesser of 5.0% of the institution’s total assets when deemed undercapitalized or the amount necessary to achieve the status of adequately capitalized. If an “undercapitalized” bank fails to submit an acceptable plan, it is treated as if it is “significantly undercapitalized.” “Significantly undercapitalized” banks must comply with one or more of a number of additional restrictions, including but not limited to an order by the Federal Deposit Insurance Corporation to sell sufficient voting stock to become adequately capitalized, requirements to reduce total assets, cease receipt of deposits from correspondent banks or dismiss directors or officers, and restrictions on interest rates paid on deposits, compensation of executive officers and capital distributions by the parent holding company. “Critically undercapitalized” institutions are subject to additional measures including, subject to a narrow exception, the appointment of a receiver or conservator within 270 days after it obtains such status.

Transactions with Affiliates and Regulation W of the Federal Reserve Regulations. Transactions between banks and their affiliates are governed by federal law. An affiliate of a bank is any company or entity that controls, is controlled by or is under common control with the bank. In a holding company context, the parent bank holding company and any companies which are controlled by such parent holding company are affiliates of the bank (although subsidiaries of the bank itself, except financial subsidiaries, are generally not considered affiliates). Generally, Section 23A of the Federal Reserve Act and the Federal Reserve Board’s Regulation W limit the extent to which a bank or its subsidiaries may engage in “covered transactions” with any one affiliate to an amount equal to 10.0% of such institution’s capital stock and surplus, and with all such transactions with all affiliates to an amount equal to 20.0% of such institution’s capital stock and surplus. Section 23B applies to “covered transactions” as well as to certain other transactions and requires that all such transactions be on terms substantially the same, or at least as favorable, to the institution or subsidiary as those provided to a non-affiliate. The term “covered transaction” includes the making of loans to, purchase of assets from, and issuance of a guarantee to an affiliate, and other similar transactions. Section 23B transactions also include the provision of services and the sale of assets by a bank to an affiliate. In addition, loans or other extensions of credit by the financial institution to the affiliate are required to be collateralized in accordance with the requirements set forth in Section 23A of the Federal Reserve Act.

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Sections 22(h) and (g) of the Federal Reserve Act place restrictions on loans to a bank’s insiders, i.e., executive officers, directors and principal stockholders. Under Section 22(h) of the Federal Reserve Act, loans to a director, an executive officer and to a greater than 10.0% stockholder of a financial institution, and certain affiliated interests of these persons, together with all other outstanding loans to such person and affiliated interests, may not exceed specified limits. Section 22(h) of the Federal Reserve Act also requires that loans to directors, executive officers and principal stockholders be made on terms substantially the same as offered in comparable transactions to other persons and also requires prior Board approval for certain loans. In addition, the aggregate amount of extensions of credit by a financial institution to insiders cannot exceed the institution’s unimpaired capital and surplus. Section 22(g) of the Federal Reserve Act places additional restrictions on loans to executive officers.

Enforcement. The Federal Deposit Insurance Corporation has extensive enforcement authority over insured state savings banks, including Fairport Savings Bank. The enforcement authority includes, among other things, the ability to assess civil money penalties, issue cease and desist orders and remove directors and officers. In general, these enforcement actions may be initiated in response to violations of laws and regulations, breaches of fiduciary duty and unsafe or unsound practices.

Federal Insurance of Deposit Accounts. Fairport Savings Bank is a member of the Deposit Insurance Fund, which is administered by the Federal Deposit Insurance Corporation. Deposit accounts in Fairport Savings Bank are insured up to a maximum of $250,000 for each separately insured depositor.

The Dodd-Frank Act increased the minimum target Deposit Insurance Fund ratio from 1.15% of estimated insured deposits to 1.35% of estimated insured deposits. The Federal Deposit Insurance Corporation must seek to achieve the 1.35% ratio by September 30, 2020. Insured institutions with assets of $10 billion or more are supposed to fund the increase. The Dodd-Frank Act eliminated the 1.5% maximum fund ratio, instead leaving it to the discretion of the Federal Deposit Insurance Corporation, which has exercised that discretion by establishing a long range fund ratio of 2%.

The Federal Deposit Insurance Corporation imposes an assessment for deposit insurance on all depository institutions. Under the Federal Deposit Insurance Corporation’s risk-based assessment system, insured institutions are assigned to risk categories based on supervisory evaluations, regulatory capital levels and certain other factors. An institution’s assessment rate depends upon the category to which it is assigned and certain adjustments specified by Federal Deposit Insurance Corporation regulations, with less risky institutions paying lower rates. The Dodd-Frank Act required the Federal Deposit Insurance Corporation to revise its procedures to base its assessments upon each insured institution’s total assets less tangible equity instead of deposits. The Federal Deposit Insurance Corporation finalized a rule, effective April 1, 2011, that set the assessment range at 2.5 to 45 basis points of total assets less tangible equity.

Effective July 1, 2016, the Federal Deposit Insurance Corporation adopted changes that eliminated the risk categories. Assessments for most institutions are now based on financial measures and supervisory ratings derived from statistical modeling estimating the probability of failure within three years. In conjunction with the Deposit Insurance Fund reserve ratio achieving 1.5%, the assessment range (inclusive of possible adjustments) was reduced for most banks and savings associations to 1.5 basis points to 30 basis points.

The Federal Deposit Insurance Corporation has authority to increase insurance assessments. A significant increase in insurance premiums would likely have an adverse effect on the operating expenses and results of operations of Fairport Savings Bank. Future insurance assessment rates cannot be predicted.

Insurance of deposits may be terminated by the Federal Deposit Insurance Corporation upon a finding that the institution has engaged in unsafe or unsound practices, is in an unsafe or unsound condition to continue operations, or has violated any applicable law, regulation, rule order or regulatory condition imposed in writing. We do not know of any practice, condition or violation that might lead to termination of deposit insurance.

In addition to the Federal Deposit Insurance Corporation assessments, the Financing Corporation (“FICO”) is authorized to impose and collect, with the approval of the Federal Deposit Insurance Corporation, assessments for anticipated payments, issuance costs and custodial fees on bonds issued by the FICO in the 1980s to recapitalize the former Federal Savings and Loan Insurance Corporation. The bonds issued by the FICO began to mature in 2017 and will mature through 2019. For the quarter ended December 31, 2017, the annualized FICO assessment was equal to 0.46 of a basis point of total assets less tangible capital.

Privacy Regulations. Federal regulations generally require that Fairport Savings Bank disclose its privacy policy, including identifying with whom it shares a customer’s “non-public personal information,” to customers at the time of establishing the customer relationship and annually thereafter. In addition, Fairport Savings Bank is required to provide its customers with the ability to “opt-out” of having their personal information shared with unaffiliated third parties and not to disclose account numbers or access codes to non-affiliated third parties for marketing purposes. Fairport Savings Bank currently has a privacy protection policy in place and believes that such policy is in compliance with the regulations.

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Community Reinvestment Act. Under the Community Reinvestment Act, or CRA, as implemented by federal regulations, a state member bank has a continuing and affirmative obligation, consistent with its safe and sound operation, to help meet the credit needs of its entire community, including low and moderate income neighborhoods. The CRA does not establish specific lending requirements or programs for financial institutions nor does it limit an institution’s discretion to develop the types of products and services that it believes are best suited to its particular community, consistent with the CRA. The CRA does require the Federal Deposit Insurance Corporation, in connection with its examination of a state savings bank, to assess the institution’s record of meeting the credit needs of its community and to take such record into account in its evaluation of certain applications by such institution, including applications to acquire branches and other financial institutions. The CRA requires a written evaluation of an institution’s CRA performance utilizing a four-tiered descriptive rating system. Fairport Savings Bank’s latest federal CRA rating was “Satisfactory.”

USA Patriot Act. Fairport Savings Bank is subject to the USA PATRIOT Act, which gives federal agencies additional powers to address terrorist threats through enhanced domestic security measures, expanded surveillance powers, increased information sharing, and broadened anti-money laundering requirements. The USA PATRIOT Act contains provisions intended to encourage information sharing among bank regulatory agencies and law enforcement bodies. Further, certain provisions impose affirmative obligations on a broad range of financial institutions, including banks, thrifts, brokers, dealers, credit unions, money transfer agents, and parties registered under the Commodity Exchange Act.

Other Regulations

Interest and other charges collected or contracted for by Fairport Savings Bank are subject to state usury laws and federal laws concerning interest rates. Loan operations are also subject to state and federal laws applicable to credit transactions, such as the:

· Home Mortgage Disclosure Act of 1975, requiring financial institutions to provide information to enable the public and public officials to determine whether a financial institution is fulfilling its obligation to help meet the housing needs of the community it serves;

· Equal Credit Opportunity Act, prohibiting discrimination on the basis of race, creed or other prohibited factors in extending credit;

· Fair Credit Reporting Act of 1978, governing the use and provision of information to credit reporting agencies; and

· Rules and regulations of the various federal and state agencies charged with the responsibility of implementing such federal and state laws.

The deposit operations of Fairport Savings Bank also are subject to, among others, the:

· Right to Financial Privacy Act, which imposes a duty to maintain confidentiality of consumer financial records and prescribes procedures for complying with administrative subpoenas of financial records;

· Check Clearing for the 21st Century Act (also known as “Check 21”), which gives “substitute checks,” such as digital check images and copies made from that image, the same legal standing as the original paper check; and

· Electronic Funds Transfer Act and Regulation E promulgated thereunder, which govern automatic deposits to and withdrawals from deposit accounts and customers’ rights and liabilities arising from the use of automated teller machines and other electronic banking services.

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Federal Reserve System

The Federal Reserve Board regulations require depository institutions to maintain non-interest-earning reserves against their transaction accounts (primarily NOW and regular checking accounts). The Federal Reserve Board regulations generally require that reserves be maintained against aggregate transaction accounts as follows: for that portion of transaction accounts aggregating $115.1 million or less (which may be adjusted by the Federal Reserve Board) the reserve requirement is 3.0%, and for amounts greater than $115.1 million the reserve requirement is 10.0% (which may be adjusted annually by the Federal Reserve Board to between 8.0% and 14.0%). The first $15.5 million of otherwise reservable balances (which may be adjusted by the Federal Reserve Board) are exempted from the reserve requirements. Fairport Savings Bank is in compliance with these requirements.

Federal Home Loan Bank System

Fairport Savings Bank is a member of the Federal Home Loan Bank System, which consists of 11 regional Federal Home Loan Banks. The Federal Home Loan Bank provides a central credit facility primarily for member institutions. Members of the Federal Home Loan Bank are required to acquire and hold shares of capital stock in the Federal Home Loan Bank. Fairport Savings Bank was in compliance with this requirement at December 31, 2017. Based on redemption provisions of the Federal Home Loan Bank of New York, the stock has no quoted market value and is carried at cost. Fairport Savings Bank reviews for impairment, based on the ultimate recoverability, the cost basis of the Federal Home Loan Bank of New York stock. As of December 31, 2017, no impairment has been recognized.

Holding Company Regulation

In connection with its second step conversion in 2016, Fairport Savings Bank revoked its Section 10(l) election, changing the status of its holding company from that of a savings and loan holding company to that of a bank holding company. By so doing, the previously applicable requirement that the Bank comply with the “Qualified Thrift Lender Test,” which limited commercial lending, was eliminated. Consequently, FSB Bancorp is subject to examination, regulation, and periodic reporting under the Bank Holding Company Act of 1956, as administered by the Federal Reserve Board. FSB Bancorp is required to obtain the prior approval of the Federal Reserve Board to acquire all, or substantially all, of the assets of any bank or bank holding company. Prior Federal Reserve Board approval would be required for FSB Bancorp to acquire direct or indirect ownership or control of any voting securities of any bank or bank holding company if it would, directly or indirectly, own or control more than 5% of any class of voting shares of the bank or bank holding company.

A bank holding company is generally prohibited from engaging in, or acquiring, direct or indirect control of more than 5% of the voting securities of any company engaged in non-banking activities. One of the principal exceptions to this prohibition is for activities found by the Federal Reserve Board to be so closely related to banking or managing or controlling banks as to be a proper incident thereto. Some of the principal activities that the Federal Reserve Board has determined by regulation to be closely related to banking are: (i) making or servicing loans; (ii) performing certain data processing services; (iii) providing securities brokerage services; (iv) acting as fiduciary, investment or financial advisor; (v) leasing personal or real property under certain conditions; (vi) making investments in corporations or projects designed primarily to promote community welfare; and (vii) acquiring a savings association.

The Gramm-Leach-Bliley Act of 1999 authorizes a bank holding company that meets specified conditions, including that its depository institution subsidiaries that are “well capitalized” and “well managed,” to opt to become a “financial holding company.” A “financial holding company” may engage in a broader array of financial activities than permitted a typical bank holding company. Such activities can include insurance underwriting and investment banking. FSB Bancorp has elected “financial holding company” status, which became effective following completion of the conversion and reorganization.

FSB Bancorp is not subject to the Federal Reserve Board’s consolidated capital adequacy guidelines for bank holding companies. Legislation was enacted in December 2014 requiring the Federal Reserve Board to generally extend its “Small Bank Holding Company” exemption from consolidated holding company capital requirements to bank and savings and loan holding companies of up to $1 billion in assets. Regulations implementing the new legislation were effective May 15, 2015. Consequently, bank holding companies with less than $1 billion in consolidated assets remain exempt from consolidated regulatory capital requirements, unless the Federal Reserve determines otherwise in particular cases.

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A bank holding company is generally required to give the Federal Reserve Board prior written notice of any purchase or redemption of then outstanding equity securities if the gross consideration for the purchase or redemption, when combined with the net consideration paid for all such purchases or redemptions during the preceding 12 months, is equal to 10% or more of the company’s consolidated net worth. The Federal Reserve Board may disapprove such a purchase or redemption if it determines that the proposal would constitute an unsafe and unsound practice, or would violate any law, regulation, Federal Reserve Board order or directive, or any condition imposed by, or written agreement with, the Federal Reserve Board. The Federal Reserve Board has adopted an exception to that approval requirement for well-capitalized bank holding companies that meet certain other conditions. The Federal Reserve Board has issued guidance which requires consultation with the Federal Reserve Board prior to a redemption or repurchase in certain circumstances.

The Federal Reserve Board has issued a policy statement regarding the payment of dividends by bank holding companies. In general, the Federal Reserve Board’s policies provide that dividends should be paid only out of current earnings and only if the prospective rate of earnings retention by the bank holding company appears consistent with the organization’s capital needs, asset quality and overall financial condition. The Federal Reserve Board’s policies also require that a bank holding company serve as a source of financial strength to its subsidiary banks by using available resources to provide capital funds during periods of financial stress or adversity and by maintaining the financial flexibility and capital-raising capacity to obtain additional resources for assisting its subsidiary banks where necessary. The Dodd-Frank Act codified the source of strength policy. Under the prompt corrective action laws, the ability of a bank holding company to pay dividends may be restricted if a subsidiary bank becomes undercapitalized. These regulatory policies could affect the ability of FSB Bancorp to pay dividends or otherwise engage in capital distributions.

FSB Bancorp and Fairport Savings Bank is affected by the monetary and fiscal policies of various agencies of the United States Government, including the Federal Reserve System. In view of changing conditions in the national economy and in the money markets, it is impossible for management to accurately predict future changes in monetary policy or the effect of such changes on the business or financial condition of FSB Bancorp or Fairport Savings Bank.

FSB Bancorp’s status as a registered bank holding company under the Bank Holding Company Act does not exempt it from certain federal and state laws and regulations applicable to corporations generally, including, without limitation, certain provisions of the federal securities laws.

Federal Securities Laws

FSB Bancorp common stock is registered with the Securities and Exchange Commission. FSB Bancorp is subject to the information, proxy solicitation, insider trading restrictions and other requirements under the Securities Exchange Act of 1934.

The registration under the Securities Act of 1933 of shares of common stock issued in FSB Bancorp’s public offering does not cover the resale of those shares. Shares of common stock purchased by persons who are not affiliates of FSB Bancorp may be resold without registration. Shares purchased by an affiliate of FSB Bancorp will be subject to the resale restrictions of Rule 144 under the Securities Act of 1933. If FSB Bancorp meets the current public information requirements of Rule 144 under the Securities Act of 1933, each affiliate of FSB Bancorp that complies with the other conditions of Rule 144, including those that require the affiliate’s sale to be aggregated with those of other persons, would be able to sell in the public market, without registration, a number of shares not to exceed, in any three-month period, the greater of 1% of the outstanding shares of FSB Bancorp, or the average weekly volume of trading in the shares during the preceding four calendar weeks. In the future, FSB Bancorp may permit affiliates to have their shares registered for sale under the Securities Act of 1933.

Emerging Growth Company Status

On April 5, 2012, the JOBS Act was signed into law. The JOBS Act made numerous changes to the federal securities laws to facilitate access to capital markets. Under the JOBS Act, a company with total annual gross revenues of less than $1.0 billion during its most recently completed fiscal year qualifies as an “emerging growth company.” We qualify as an “emerging growth company” and believe that we will continue to qualify as an “emerging growth company” for five years from the completion of the stock offering.

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Subject to certain conditions set forth in the JOBS Act, as an “emerging growth company,” we expect to rely on such exemptions so that we may not be required to, among other things, (i) provide an auditor’s attestation report on our system of internal controls over financial reporting, (ii) provide all of the compensation disclosure that may be required of non-emerging growth public companies under the Dodd-Frank Act, (iii) hold non-binding stockholder votes regarding annual executive compensation or executive compensation payable in connection with a merger or similar corporate transaction, (iv) comply with any requirement that may be adopted by the Public Company Accounting Oversight Board regarding mandatory audit firm rotation or a supplement to the auditor’s report providing additional information about the audit and the financial statements (auditor discussion and analysis), and (v) disclose certain executive compensation related items such as the correlation between executive compensation and performance and comparisons of the chief executive officer’s compensation to median employee compensation. These exemptions will apply for a period of five years following the completion of our initial public offering or until we are no longer an “emerging growth company,” whichever is earlier. However, we will not be subject to the auditor attestation requirement or additional executive compensation disclosure, regardless of the exemptions, so long as we remain a “smaller reporting company” under Securities and Exchange Commission regulations (generally less than $75 million of voting and non-voting equity held by non-affiliates).

We could remain an “emerging growth company” for up to five years, or until the earliest of (a) the last day of the first fiscal year in which our annual gross revenues exceed $1.0 billion, (b) the date that we become a “large accelerated filer” as defined in Rule 12b-2 under the Securities Exchange Act of 1934, as amended, which would occur if the market value of our common stock that is held by non-affiliates exceeds $700 million as of the last business day of our most recently completed second fiscal quarter, or (c) the date on which we have issued more than $1.0 billion in non-convertible debt during the preceding three-year period.

Sarbanes-Oxley Act of 2002

The Sarbanes-Oxley Act of 2002 is intended to improve corporate responsibility, to provide for enhanced penalties for accounting and auditing improprieties at publicly traded companies and to protect investors by improving the accuracy and reliability of corporate disclosures pursuant to the securities laws. We have policies, procedures and systems designed to comply with these regulations, and we review and document such policies, procedures and systems to ensure continued compliance with these regulations.

Change in Control Regulations

Under the Change in Bank Control Act, no person may acquire control of a bank holding company such as FSB Bancorp unless the Federal Reserve Board has been given 60 days’ prior written notice and has not issued a notice disapproving the proposed acquisition, taking into consideration certain factors, including the financial and managerial resources of the acquirer and the competitive effects of the acquisition. Control, as defined under federal law, means ownership, control of or holding irrevocable proxies representing more than 25% of any class of voting stock, control in any manner of the election of a majority of the institution’s directors, or a determination by the regulator that the acquiror has the power, directly or indirectly, to exercise a controlling influence over the management or policies of the institution. Acquisition of more than 10% of any class of a bank holding company’s voting stock constitutes a rebuttable determination of control under the regulations under certain circumstances including where, as is the case with FSB Bancorp, the issuer has registered securities under Section 12 of the Securities Exchange Act of 1934.

In addition, federal regulations provide that no company may acquire control of a bank holding company without the prior approval of the Federal Reserve Board. Any company that acquires such control becomes a “bank holding company” subject to registration, examination and regulation by the Federal Reserve Board.

TAXATION

FSB Bancorp and Fairport Savings Bank are subject to federal and state income taxation in the same general manner as other corporations, with some exceptions discussed below. The following discussion of federal and state taxation is intended only to summarize certain pertinent tax matters and is not a comprehensive description of the tax rules applicable to FSB Bancorp or Fairport Savings Bank.

Federal Taxation

Tax Cuts and Jobs Act. On December 22, 2017, the Tax Cuts and Jobs Act (the “Tax Act”) was enacted which reduced the corporate federal income tax rate from 34% to 21% and caused a reevaluation of net deferred tax assets. Generally accepted accounting principles requires that the impact of the provisions of the Tax Act be accounted for in the period of enactment. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.

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Method of Accounting. For federal income tax purposes, FSB Bancorp and Fairport Savings Bank currently report their income and expenses on the accrual method of accounting and use a tax year ending December 31 for filing their federal income tax returns.

Bad Debt Reserves. Prior to the Small Business Protection Act of 1996 (the “1996 Act”), Fairport Savings Bank was permitted to establish a reserve for bad debts and to make annual additions to the reserve. These additions could, within specified formula limits, be deducted in arriving at our taxable income. As a result of the 1996 Act, Fairport Savings Bank was required to use the specific charge off method in computing its bad debt deduction beginning with its 1996 federal tax return. Savings institutions were required to recapture any excess reserves over those established as of December 31, 1987 (base year reserve). At December 31, 2017, Fairport Savings Bank had no reserves subject to recapture in excess of its base year reserves.

Taxable Distributions and Recapture. Prior to the 1996 Act, bad debt reserves created prior to January 1, 1988 were subject to recapture into taxable income if Fairport Savings Bank failed to meet certain thrift asset and definitional tests. Federal legislation has eliminated these thrift-related recapture rules. At December 31, 2017, our total federal pre-1988 base year reserve was approximately $1.5 million. However, under current law, pre-1988 base year reserves remain subject to recapture if Fairport Savings Bank makes certain non-dividend distributions, repurchases any of its stock, pays dividends in excess of tax earnings and profits, or ceases to maintain a savings bank charter.

Alternative Minimum Tax. The Internal Revenue Code imposes an alternative minimum tax (“AMT”) at a rate of 20% on a base of regular taxable income plus certain tax preferences, which we refer to as “alternative minimum taxable income.” The AMT is payable to the extent such alternative minimum taxable income is in excess of an exemption amount and the AMT exceeds the regular income tax. Net operating losses can offset no more than 90% of alternative minimum taxable income. Certain AMT payments may be used as credits against regular tax liabilities in future years. At December 31, 2017, FSB Bancorp had no AMT payments available to carry forward to future periods. Under the Tax Act, AMT will no longer be imposed beginning in 2018.

Net Operating Loss Carryovers. A company may carry back net operating losses to the preceding two taxable years and forward to the succeeding 20 taxable years. At December 31, 2017, FSB Bancorp had no net operating loss carry forwards for federal income tax purposes.

Corporate Dividends-Received Deduction. FSB Bancorp may exclude from its income 100% of dividends received from Fairport Savings Bank as a member of the same affiliated group of corporations. The corporate dividends-received deduction is 80% in the case of dividends received from a corporation in which a corporate recipient owns at least 20% of its stock, and corporations that own less than 20% of the stock of a corporation distributing a dividend may deduct only 70% of dividends received or accrued on their behalf.

State Taxation

New York State Taxation. Effective January 1, 2015, banking corporations became subject to taxation under the New York State General Business Corporation Franchise Tax provisions. The New York State tax rate on “entire net income” was reduced from 7.1% to 6.5% effective January 1, 2016, and various modifications were available to community banks (defined as banks with less than $8 billion in total assets) regarding deductions associated with interest income.

Maryland State Taxation. As a Maryland business corporation, FSB Bancorp is required to file an annual report with and pay franchise taxes to the state of Maryland.

ITEM 1A. RISK FACTORS

As a “smaller reporting company,” FSB Bancorp is not required to provide the information required by this item.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

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ITEM 2. PROPERTIES

As of December 31, 2017, the net book value of our office properties was $4.9 million. The following table sets forth information regarding our offices.

Location	Leased or Owner	Year Acquired or Leased	Net Book Value of Real Property
Main Office:
Fairport	Owner	1932	$	1,481,000
Other Properties:
Penfield	Leased	2002	$	1,191,000
Irondequoit	Leased	2007	$	1,073,000
Webster	Leased	2009	$	234,000
Perinton	Leased	2011	$	896,000
Pittsford	Leased	2010	$	60,000
Greece	Leased	2014	$	10,000
Watertown	Leased	2010		—
Cheektowaga	Leased	2015		—
Lewiston	Leased	2017		—

ITEM 3. LEGAL PROCEEDINGS

Periodically, the Company is involved in claims and lawsuits, such as claims to enforce liens, condemnation proceedings on properties in which we hold security interests, claims involving the making and servicing of real property loans and other issues incident to our business. At December 31, 2017, the Company was not a party to any pending legal proceedings that we believe would have a material adverse effect on our financial condition, results of operations or cash flows.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

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PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

FSB Bancorp completed its conversion and related stock offering on July 13, 2016. FSB Bancorp’s common stock is traded on the Nasdaq Capital Market under the symbol “FSBC.” The approximate number of holders of record of FSB Bancorp’s common stock as of March 7, 2018 was 183. Certain shares of FSB Bancorp are held in “nominee” or “street name” and, accordingly, the number of beneficial owners of such shares is not known or included in the foregoing number.

The table below sets forth the high and low sales prices of FSB Bancorp’s common stock for the periods listed. Information from before July 13, 2016 reflects the stock price information of FSB Bancorp’s predecessor, FSB Community Bankshares, Inc., whose shares were quoted on the OTC Pink under the trading symbol “FSBC.” On July 13, 2016, each share of FSB Community common stock not held by its mutual holding company, FSB Community Bankshares, MHC, was converted to 1.0884 shares of FSB Bancorp common stock. Accordingly, we have adjusted the share prices prior to July 13, 2016 to reflect the 1.0884 exchange rate.

	High		Low
Year Ended December 31, 2017
Quarter ended December 31, 2017	$	17.75	$	15.30
Quarter ended September 30, 2017	$	16.72	$	14.60
Quarter ended June 30, 2017	$	15.10	$	14.21
Quarter ended March 31, 2017	$	14.84	$	13.97
Year Ended December 31, 2016
Quarter ended December 31, 2016	$	14.90	$	12.50
Quarter ended September 30, 2016	$	13.70	$	11.93
Quarter ended June 30, 2016	$	12.33	$	11.59
Quarter ended March 31, 2016	$	12.82	$	9.19

FSB Bancorp has not declared, and FSB Community did not declare, dividends on its common stock. Dividend payments by FSB Bancorp are dependent in part on dividends it receives from Fairport Savings Bank because FSB Bancorp has no source of income other than dividends from Fairport Savings Bank, earnings from the investment of proceeds from the sale of shares of common stock retained by FSB Bancorp and interest payments with respect to FSB Bancorp’s loan to the Employee Stock Ownership Plan. For more information on restrictions on dividend payments, please see “Item 1. Business—Regulation and Supervision—Holding Company Regulation.”

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The following table provides certain information with regard to shares repurchased by the Company during the quarter ended December 31, 2017.

Period	(a) Total Number of Shares Purchased		(b) Average Price Paid per Share		(c) Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs(1)		(d) Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs(1)
October 1 — October 31, 2017		-	$	-		-		28,149
November 1 — November 30, 2017		600	$	16.38		600		27,549
December 1 — December 31, 2017		-	$	-		-		27,549
Total		600	$	16.38		600

(1) The Company’s Board of Directors authorized its first stock repurchase program on July 27, 2017 to acquire up to 97,084 shares, or 5.0% of the Company’s then outstanding common stock.  Repurchases will be made from time to time depending on market conditions and other factors, and will be conducted through open market or private transactions, through block trades, and pursuant to any trading plan that may be adopted in accordance with Rule 10b5-1 of the Securities and Exchange Commission.  There is no guarantee as to the exact number of shares to be repurchased by the Company.

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ITEM 6. SELECTED FINANCIAL DATA

This item is not applicable to smaller reporting companies.

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The information contained in the section captioned “Management’s Discussion and Analysis of Financial Condition and Results of Operations” is incorporated by reference to our Annual Report to Stockholders.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

As a “smaller reporting company,” FSB Bancorp is not required to provide the information required by this item.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The consolidated financial statements included in our Annual Report to Stockholders are incorporated herein by reference.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

Under the supervision and with the participation of the Company’s management, including our Chief Executive Officer and Principal Financial Officer, the Company has evaluated the effectiveness of the design and operation of its disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) under the Exchange Act) as of December 31, 2017. Based upon that evaluation, the Chief Executive Officer and Principal Financial Officer concluded that, as of December 31, 2017, the Company’s disclosure controls and procedures are effective to ensure that information required to be disclosed in the reports that the Company files or submits under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported, within the time periods specified in the Securities and Exchange Commission’s rules and forms.

Management’s Report on Internal Control over Financial Reporting

Management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is defined in Rule 13a-15(f) under the Exchange Act as a process designed by, or under the supervision of, the Company’s principal executive and principal financial officers and effected by the Company’s Board of Directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. The Company’s internal control over financial reporting includes those policies and procedures that:

(i) pertain to the maintenance of records that in reasonable detail accurately and fairly reflects the transactions and disposition of the assets of the Company;

(ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the Company are being made only in accordance with authorization of management and directors of the Company; and

(iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the financial statements.

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Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of the Company’s internal control over financial reporting as of December 31, 2017. In making this assessment, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework (2013).

Based on our assessment and those criteria, management believes that the Company maintained effective internal control over financial reporting as of December 31, 2017.

This annual report does not include an attestation report of the Company’s registered public accounting firm regarding internal control over financial reporting. Management’s report was not subject to attestation by the Company’s registered public accounting firm pursuant to rules of the Securities and Exchange Commission that permit the Company to provide only management’s report in this annual report.

There has been no change in the Company’s internal control over financial reporting during the fourth quarter of the fiscal year ended December 31, 2017 that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

ITEM 9B. OTHER INFORMATION

None.

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PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Information concerning our directors and certain officers is incorporated herein by reference to the section entitled “Proposal I—Election of Directors” in the Proxy Statement for the 2018 Annual Meeting of Stockholders.

ITEM 11. EXECUTIVE COMPENSATION

Information with respect to management compensation required under this item is incorporated herein by reference to the section entitled “Proposal I—Election of Directors” in the Proxy Statement for the 2018 Annual Meeting of Stockholders.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Information with respect to management compensation required under this item is incorporated herein by reference to the section entitled “Proposal I—Election of Directors” in the Proxy Statement for the 2018 Annual Meeting of Stockholders.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

Information with respect to management compensation required under this item is incorporated herein by reference to the section entitled “Proposal I—Election of Directors” in the Proxy Statement for the 2018 Annual Meeting of Stockholders.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

Information with respect to management compensation required under this item is incorporated herein by reference to the section entitled “Proposal II—Ratification of Appointment of Independent Registered Public Accounting Firm” in the Proxy Statement for the 2018 Annual Meeting of Stockholders.

34

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a)(1) Financial Statements

The documents filed as a part of this Annual Report on Form 10-K are:

(A) Report of Independent Registered Public Accounting Firm

(B) Consolidated Balance Sheets – as of December 31, 2017 and 2016

(C) Consolidated Statements of Income – years ended December 31, 2017 and 2016

(D) Consolidated Statements of Comprehensive Income – years ended December 31, 2017 and 2016

(E) Consolidated Statements of Stockholders’ Equity – years ended December 31, 2017 and 2016

(F) Consolidated Statements of Cash Flows – years ended December 31, 2017 and 2016

(G) Notes to Consolidated Financial Statements

(a)(2) Financial Statement Schedules

All financial statement schedules have been omitted as the required information is inapplicable or has been included in the Notes to Financial Statements.

(a)(3) Exhibits

3.1	Articles of Incorporation of FSB Bancorp, Inc. (incorporated by reference to Exhibit 3.1 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
3.2	Bylaws of FSB Bancorp, Inc. (incorporated by reference to Exhibit 3.2 to Pre-Effective Amendment No. 1 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on April 28, 2016).
4	Form of Common Stock Certificate of FSB Bancorp, Inc. (incorporated by reference to Exhibit 4 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.1	Employment Agreement between Fairport Savings Bank and Dana C. Gavenda (incorporated by reference to Exhibit 10.1 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.2	Employment Agreement by and between Fairport Savings Bank and Kevin D. Maroney dated October 26, 2017 (incorporated by reference to Exhibit 10.1 to the current report on Form 8-K of FSB Bancorp, Inc. (File No. 001-37831) filed with the Securities and Exchange Commission on October 31, 2017).
10.3	Supplemental Executive Retirement Plan for Dana C. Gavenda (incorporated by reference to Exhibit 10.3 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.4	Supplemental Executive Retirement Plan Kevin D. Maroney (incorporated by reference to Exhibit 10.4 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.5	Executive Compensation Clawback Agreement with Kevin D. Maroney (incorporated by reference to Exhibit 10.5 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.6	FSB Bancorp, Inc. Annual Incentive Plan (incorporated by reference to Exhibit 10.6 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.7	FSB Bancorp, Inc. 2017 Equity Incentive Plan (incorporated by reference to Appendix A of the definitive Proxy Statement (File No. 001-37831) filed with the Securities and Exchange Commission on July 19, 2017).
10.8	Amendment to Fairport Savings Bank Supplemental Executive Retirement Plan, dated September 27, 2017 (incorporated by reference to Exhibit 10.1 to the current report on Form 8-K of FSB Bancorp, Inc. (File No. 001-37831), filed with the Securities and Exchange Commission on October 3, 2017).
10.9	Amendment to the Supplemental Executive Retirement Agreement between Fairport Savings Bank and Kevin D. Maroney, dated September 27, 2017 (incorporated by reference to Exhibit 10.2 to the current report on Form 8-K of FSB Bancorp, Inc. (File No. 001-37831), filed with the Securities and Exchange Commission on October 3, 2017).

35

10.10	Form of Restricted Stock Award Agreements (incorporated by reference to Exhibit 10.2 to the Registration Statement on Form S-8 (File No. 333-220742), filed with the Securities and Exchange Commission on September 29, 2017).
10.11	Form of Incentive Stock Option Award Agreement (incorporated by reference to Exhibit 10.3 to the Registration Statement on Form S-8 (File No. 333-220742), filed with the Securities and Exchange Commission on September 29, 2017).
10.12	Form of Non-Statutory Stock Option Award Agreements (incorporated by reference to Exhibit 10.4 to the Registration Statement on Form S-8 (File No. 333-220742), filed with the Securities and Exchange Commission on September 29, 2017).
13	2017 Annual Report to Stockholders
23	Consent of Bonadio & Co., LLP
31.1	Certification required pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification required pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of Chief Executive Officer and Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101	The following materials from the Company’s Annual Report on Form 10-K for the year ended December 31, 2017, formatted in XBRL (Extensible Business Reporting Language): (i) Consolidated Balance Sheets; (ii) Consolidated Statements of Income; (iii) Consolidated Statements of Comprehensive Income; (iv) Consolidated Statements of Stockholders’ Equity; (v) Consolidated Statements of Cash Flows; and (v) Notes to Consolidated Financial Statements

ITEM 16. FORM 10-K SUMMARY

The Company has elected not to provide summary information.

36

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) 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.

	FSB BANCORP, INC.
Date:  March 30, 2018	By:	/s/ Kevin D. Maroney
	Kevin D. Maroney
	President and Chief Executive Officer
	(Duly Authorized Representative)

/s/ Kevin D. Maroney	President, Chief Executive Officer and Director	March 30, 2018
Kevin D. Maroney	(Principal Executive Officer)
/s/ Angela M. Krezmer	Principal Financial Officer	March 30, 2018
Angela M. Krezmer	(Principal Accounting and Financial Officer)
/s/ Dana C. Gavenda	Chairman of the Board	March 30, 2018
Dana C. Gavenda
/s/ Dawn DePerrior	Director	March 30, 2018
Dawn DePerrior
/s/ Stephen Meyer	Director	March 30, 2018
Stephen Meyer
/s/ Lowell C. Patric	Director	March 30, 2018
Lowell C. Patric
/s/ Alicia H. Pender	Director	March 30, 2018
Alicia H. Pender
/s/ James E. Smith	Director	March 30, 2018
James E. Smith
/s/ Charis W. Warshof	Director	March 30, 2018
Charis W. Warshof
/s/ Thomas Weldgen	Director	March 30, 2018
Thomas Weldgen

EXHIBIT INDEX

3.1	Articles of Incorporation of FSB Bancorp, Inc. (incorporated by reference to Exhibit 3.1 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
3.2	Bylaws of FSB Bancorp, Inc. (incorporated by reference to Exhibit 3.2 to Pre-Effective Amendment No. 1 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on April 28, 2016).
4	Form of Common Stock Certificate of FSB Bancorp, Inc. (incorporated by reference to Exhibit 4 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.1	Employment Agreement between Fairport Savings Bank and Dana C. Gavenda (incorporated by reference to Exhibit 10.1 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.2	Employment Agreement by and between Fairport Savings Bank and Kevin D. Maroney dated October 26, 2017 (incorporated by reference to Exhibit 10.1 to the current report on Form 8-K of FSB Bancorp, Inc. (File No. 001-37831) filed with the Securities and Exchange Commission on October 31, 2017).
10.3	Supplemental Executive Retirement Plan for Dana C. Gavenda (incorporated by reference to Exhibit 10.3 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.4	Supplemental Executive Retirement Plan Kevin D. Maroney (incorporated by reference to Exhibit 10.4 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.5	Executive Compensation Clawback Agreement with Kevin D. Maroney (incorporated by reference to Exhibit 10.5 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.6	FSB Bancorp, Inc. Annual Incentive Plan (incorporated by reference to Exhibit 10.6 to the Registration Statement on Form S-1 of FSB Bancorp, Inc. (File No. 333-210129), filed with the Securities and Exchange Commission on March 11, 2016).
10.7	FSB Bancorp, Inc. 2017 Equity Incentive Plan (incorporated by reference to Appendix A of the definitive Proxy Statement (File No. 001-37831) filed with the Securities and Exchange Commission on July 19, 2017).
10.8	Amendment to Fairport Savings Bank Supplemental Executive Retirement Plan, dated September 27, 2017 (incorporated by reference to Exhibit 10.1 to the current report on Form 8-K of FSB Bancorp, Inc. (File No. 001-37831), filed with the Securities and Exchange Commission on October 3, 2017).
10.9	Amendment to the Supplemental Executive Retirement Agreement between Fairport Savings Bank and Kevin D. Maroney, dated September 27, 2017 (incorporated by reference to Exhibit 10.2 to the current report on Form 8-K of FSB Bancorp, Inc. (File No. 001-37831), filed with the Securities and Exchange Commission on October 3, 2017).
10.10	Form of Restricted Stock Award Agreements (incorporated by reference to Exhibit 10.2 to the Registration Statement on Form S-8 (File No. 333-220742), filed with the Securities and Exchange Commission on September 29, 2017).
10.11	Form of Incentive Stock Option Award Agreement (incorporated by reference to Exhibit 10.3 to the Registration Statement on Form S-8 (File No. 333-220742), filed with the Securities and Exchange Commission on September 29, 2017).
10.12	Form of Non-Statutory Stock Option Award Agreements (incorporated by reference to Exhibit 10.4 to the Registration Statement on Form S-8 (File No. 333-220742), filed with the Securities and Exchange Commission on September 29, 2017).
13	2017 Annual Report to Stockholders
23	Consent of Bonadio & Co., LLP
31.1	Certification required pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2	Certification required pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1	Certification of Chief Executive Officer and Principal Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101	The following materials from the Company’s Annual Report on Form 10-K for the year ended December 31, 2017, formatted in XBRL (Extensible Business Reporting Language): (i) Consolidated Balance Sheets; (ii) Consolidated Statements of Income; (iii) Consolidated Statements of Comprehensive Income; (iv) Consolidated Statements of Stockholders’ Equity; (v) Consolidated Statements of Cash Flows; and (v) Notes to Consolidated Financial Statements

EX-13

Exhibit 13

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
AND RESULTS OF OPERATIONS

This discussion and analysis reflects our consolidated financial statements and other relevant statistical data, and is intended to enhance your understanding of our financial condition and results of operations. The information in this section has been derived from the audited consolidated financial statements that appear beginning on page 22 of this Annual Report. You should read the information in this section in conjunction with the business and financial information regarding FSB Bancorp and the financial statements provided in this Annual Report.

Overview

Our business has traditionally focused on originating one- to four-family residential real estate mortgage loans, home equity lines of credit, and offering retail deposit accounts. In recent years, we have expanded our mortgage origination footprint and opened new mortgage offices in Cheektowaga and Lewiston, New York. Our primary market area now consists of Monroe County and the surrounding western New York counties of Erie, Livingston, Ontario, Orleans, Jefferson, Niagara, and Wayne. Management has made the decision to deploy available funds from deposit and borrowing growth into higher-yielding assets, primarily commercial loan products and adjustable rate one- to four-family mortgage and construction loans in 2017. Increases in the loan portfolio balances as well as modestly higher average yields on the overall loan portfolio resulted in higher interest income in 2017. More recently, we shifted attention to expand our commercial loan department in an effort to improve our interest rate risk exposure with shorter duration commercial loan products, as well as higher yielding assets. In October 2017, we hired a Chief Lending Officer to manage and oversee the growth of our loan portfolio and supervise credit administration to continue to maintain our high asset quality.

At December 31, 2017, the Company had $314.6 million in consolidated assets, an increase of $40.9 million, or 15.0%, from $273.7 million at December 31, 2016. During 2017, we continued to focus on loan production, particularly with respect to residential mortgage loans as well as construction, commercial real estate, and commercial and industrial loans. The credit quality of our loan portfolio remains strong and significantly better than peers. At December 31, 2017, we had two non-performing residential mortgages loan for $153,000 and no non-performing loans at December 31, 2016.

1

Our results of operations depend primarily on our net interest income and, to a lesser extent, other income. Net interest income is the difference between the interest income we earn on our interest-earning assets, consisting primarily of loans, investment securities and other interest-earning assets (primarily cash and cash equivalents), and the interest we pay on our interest-bearing liabilities, consisting primarily of savings accounts, NOW accounts, money market accounts, time deposits and borrowings. Other income consists primarily of realized gains on sales of loans and securities, mortgage fee income, fees and service charges from deposit products, fee income from our financial services subsidiary, earnings on bank owned life insurance and miscellaneous other income. Our results of operations also are affected by our provision for loan losses and other expense. Other expense consists primarily of salaries and employee benefits, occupancy, equipment, electronic banking, data processing costs, mortgage fees and taxes, advertising, directors’ fees, FDIC deposit insurance premium expense, audit and tax services, and other miscellaneous expenses. Our results of operations also may be affected significantly by general and local economic and competitive conditions, changes in market interest rates, government policies and actions of regulatory authorities. For the year ended December 31, 2017, we had net income of $290,000 compared to net income of $938,000 for the year ended December 31, 2016. The Company’s financial results for the year ended December 31, 2017 reflected two notable non-recurring items which contributed to the decrease in net income of $648,000 in 2017 as compared to 2016, which were a $280,000 decrease in the mortgage recording tax credit and a $228,000 increase in income tax expense due to the Tax Cuts and Jobs Act (the “Tax Act”) that was enacted on December 22, 2017, which reduced the corporate federal income tax rate from 34% to 21% and caused a reevaluation of net deferred tax assets. Generally accepted accounting principles requires that the impact of the provisions of the Tax Act be accounted for in the period of enactment. The increase in mortgage expense was due to a change in New York State tax law which allowed for a refundable tax credit for mortgage recording tax expensed during the year ended December 31, 2016, which resulted in a complete reversal of all mortgage recording tax expensed with a credit of $627,000 for the year ended December 31, 2016 which did not recur in 2017. The year over year decrease in earnings of $648,000 was attributable to increases in other expense, income tax expense, and provision for loan losses as well as a decrease in other income, partially offset by an increase in net interest income.

Critical Accounting Policies

Critical accounting policies are defined as those that involve significant judgments and uncertainties, and could potentially result in materially different results under different assumptions and conditions. We believe that the most critical accounting policies upon which our financial condition and results of operations depend, involve the most complex subjective decisions or assessments including our policies with respect to our allowance for loan losses, deferred tax assets, and the estimation of fair values for accounting and disclosure purposes.

Allowance for Loan Losses. The allowance for loan losses is the amount estimated by management as necessary to absorb credit losses incurred in the loan portfolio that are both probable and reasonably estimable at the balance sheet date. The amount of the allowance is based on significant estimates, and the ultimate losses may vary from such estimates as more information becomes available or conditions change. The methodology for determining the allowance for loan losses is considered a critical accounting policy by management due to the high degree of judgment involved, the subjectivity of the assumptions used and the potential for changes in the economic environment that could result in changes to the amount of the recorded allowance for loan losses.

As a substantial percentage of our loan portfolio is collateralized by real estate, appraisals of the underlying value of property securing loans are critical in determining the amount of the allowance required for specific loans. Assumptions are instrumental in determining the value of properties. Overly optimistic assumptions or negative changes to assumptions could significantly affect the valuation of a property securing a loan and the related allowance determined. Management carefully reviews the assumptions supporting such appraisals to determine that the resulting values reasonably reflect amounts realizable on the related loans.

2

Management performs a quarterly evaluation of the adequacy of the allowance for loan losses. We consider a variety of factors in establishing this estimate including, but not limited to, current economic conditions, delinquency statistics, geographic concentrations, the adequacy of the underlying collateral, the financial strength of the borrower, results of internal loan reviews and other relevant factors. This evaluation is inherently subjective as it requires material estimates by management that may be susceptible to significant change based on changes in economic and real estate market conditions.

The evaluation has specific, general, and unallocated components. The specific component relates to loans that are deemed to be impaired and classified as special mention, substandard, doubtful, or loss. For such loans that are also classified as impaired, an allowance is generally established when the collateral value of the impaired loan is lower than the carrying value of that loan. The general component covers non-classified loans and is based on historical loss experience adjusted for qualitative factors. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.

Actual loan losses may be significantly more than the allowance we have established which could have a material negative effect on our financial results.

Deferred Tax Assets. The deferred tax assets and liabilities represent the future tax return consequences of the temporary differences, which will either be taxable or deductible when the assets and liabilities are recovered or settled. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized. Deferred tax assets and liabilities are reflected at income tax rates applicable to the period in which the deferred tax assets and liabilities are expected to be realized or settled. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes. The Tax Act was signed into law in December 2017 which reduced the corporate federal statutory tax rate from 34% to 21%. U.S. GAAP requires the impact of the Tax Act to be accounted for in the period of enactment. As such, the Company was required to write down the value of its net deferred tax assets as of December 31, 2017 to reflect the reduction in the corporate tax rate for future periods.

Estimation of Fair Values. Fair values for securities available-for-sale are obtained from an independent third party pricing service. Where available, fair values are based on quoted prices on a nationally recognized securities exchange. If quoted prices are not available, fair values are measured using quoted market prices for similar benchmark securities. Management generally makes no adjustments to the fair value quotes provided by the pricing source. The fair values of foreclosed real estate and the underlying collateral value of impaired loans are typically determined based on evaluations by third parties, less estimated costs to sell. When necessary, appraisals are updated to reflect changes in market conditions.

3

Business Strategy

Fairport Savings Bank, a wholly owned banking subsidiary of FSB Bancorp, Inc. has been serving the Fairport and surrounding communities since 1888. Among the most significant initiatives implemented over the past decade has been the Bank’s conversion from a mutual institution to a stock company. The conversion process enabled the Bank to raise additional capital to successfully support its growth and expansion strategies. We are committed to meeting the financial needs of the communities we serve, primarily the greater Rochester and Buffalo, New York metropolitan areas, and are dedicated to providing personalized superior service to our customers. The business of banking has changed rapidly, requiring extensive investment in technology as well as significantly increased compliance expenses to address the substantial regulatory changes enacted in recent years. We recognize that to continue to meet the needs of our customers and to provide a competitive return to our stockholders, we will need to continue to grow, by both expanding our residential lending business and diversifying our lending efforts. Instead of concentrating solely on residential mortgage lending, the Bank now offers a full complement of financial services, including commercial and industrial, commercial real estate, and small business administration (“SBA”) loans and deposit services to small businesses in our primary service areas. Our principal strategies to achieve these goals are as follows:

· Continuing to Emphasize Residential Real Estate Lending. Historically we have emphasized the origination of one- to four-family residential loans within Monroe County and the surrounding counties of Livingston, Ontario, Orleans and Wayne, New York. More recently the Bank has expanded its lending efforts to include the counties of Erie and Niagara, New York. As of December 31, 2017, 78.3% of our loan portfolio consisted of one- to four-family residential loans. We intend to continue to emphasize originations of loans secured by one- to four-family residential real estate, holding in portfolio loans that are either adjustable-rate or have fixed-rates with terms of less than 15 years and selling longer-term fixed-rate one- to four-family residential real estate loans in the secondary market to increase other income.

· Expanding Our Commercial Banking Market Share. We offer a variety of lending and deposit products for commercial banking customers in our markets. We have invested heavily in developing our commercial loan department over the last four years by recruiting and hiring talented commercial loan officers, including our recent hire of a new Chief Lending Officer, and enhancing our commercial product offerings. We grew our commercial loan portfolio, which includes commercial real estate, multi-family, and commercial and industrial loans, $13.6 million, or 88.1% to $29.1 million at December 31, 2017 from $15.5 million at December 31, 2016. We seek to develop broad customer deposit and loan relationships based on our service and competitive pricing while maintaining a conservative approach to lending and sound asset quality. We intend to focus our efforts on the needs of small and medium sized businesses in our market, focusing on commercial real estate, multi-family, and construction loans while gradually growing our portfolio of commercial and industrial loans as well as Small Business Administration guaranteed loans.

4

· Maintaining High Asset Quality. We believe that strong asset quality is critical to the long-term financial success of a small community bank. We attribute our high asset quality to maintaining conservative underwriting standards, the diligence of our loan collection personnel, and the stability of our local economy. At December 31, 2017, we had two non-performing residential mortgages loan for $153,000 and our ratio of allowance for loan losses to total loans was 0.48%. Over the last five years, we have charged off only $1,000. We believe that our allowance for loan losses is adequate to absorb the probable losses inherent in our loan portfolio.

· Managing Our Interest Rate Risk. To improve our interest rate risk, in recent years we have reduced the fixed-rate loan originations added to our loan portfolio by selling most fixed-rate residential mortgages with terms of 15 years or greater in the secondary market. We also invest a portion of funds received from loan payments and repayments in shorter term and intermediate term, liquid investment securities and securities classified as available-for-sale including U.S. Government agency debt obligations and mortgage-backed securities. We emphasize marketing our lower cost passbook, savings and checking accounts, money market accounts and increasing the duration whenever possible of our lower cost certificates of deposit and Federal Home Loan Bank borrowings.

· Offering A Wide Selection Of Non-Deposit Investment Products and Services. Fairport Wealth Management, a wholly owned subsidiary of Fairport Savings Bank, offers a broad range of investment, insurance, and financial products. We have a dedicated investment representative that evaluates the needs of clients to determine the suitable investment and insurance solutions to meet their short and long-term wealth management goals. In 2017, Fairport Wealth Management had fee income of $174,000 and we intend to continue to emphasize these investment, insurance, and financial products to our customers. In May 2017, Fairport Savings Bank partnered with Insuritas, the nation’s premier provider of turn-key insurance agencies for financial institutions. This new partnership with Insuritas allows the Company to provide a comprehensive suite of insurance products for our customers and the community we serve.

· Continuing to Grow Customer Relationships and Core Deposits.

As we continue to grow our core deposits we remain committed to developing and maintaining full service long term customer relationships by offering competitive products while providing exceptional customer service. In 2017, total deposits grew $33.8 million, or 18.5%, to $216.7 million at December 31, 2017 from $182.9 million at December 31, 2016. At December 31, 2017, our transaction accounts grew $8.5 million, or 8.9%, to $103.4 million compared to $94.9 million at December 31, 2016. At December 31, 2017, certificates of deposit, including individual retirement accounts increased $25.3 million, or 28.7% to $113.3 million compared to $88.0 million at December 31, 2016 with preferential rates given to relationship customers.

5

Selected Consolidated Financial and Other Data

	At December 31, 2017		At December 31, 2016
	(In thousands)
Selected Financial Condition Data:
Total assets	$	314,630	$	273,721
Cash and cash equivalents		10,397		7,407
Securities available-for-sale		18,313		17,747
Securities held-to-maturity		6,575		7,420
Loans held for sale		2,770		2,059
Loans, net		262,711		226,192
Deposits		216,691		182,934
Borrowings		64,447		56,813
Stockholders’ equity		31,219		31,859

	For the Year Ended December 31,
	2017		2016
	(In thousands)
Selected Operating Data:
Interest and dividend income	$	10,732	$	9,317
Interest expense		2,778		2,156
Net interest income		7,954		7,161
Provision for loan losses		271		180
Net interest income after provision for loan losses		7,683		6,981
Other income		3,576		3,655
Other expense		10,521		9,370
Income before income taxes		738		1,266
Provision for income taxes		448		328
Net income	$	290	$	938

6

	At or For the Year Ended December 31,
	2017			2016
Selected Financial Ratios and Other Data:
Performance Ratios:
Return on average assets		0.10	%		0.36	%
Return on average equity		0.91	%		3.62	%
Interest rate spread(1)		2.71	%		2.76	%
Net interest margin(2)		2.85	%		2.87	%
Efficiency ratio(3)		93.45	%		88.10	%
Other income to average total assets		1.23	%		1.40	%
Other expense to average total assets		3.61	%		3.59	%
Average interest-earning assets to average interest-bearing liabilities		113	%		113	%
Asset Quality Ratios:
Non-performing assets as a percent of total assets		0.05	%		0.00	%
Non-performing loans as a percent of total loans		0.06	%		0.00	%
Allowance for loan losses as a percent of non-performing loans		825.59	%		0.00	%
Allowance for loan losses as a percent of total loans		0.48	%		0.44	%
Capital Ratios:
Total risk-based capital (to risk-weighted assets)		16.18	%		18.45	%
Tier 1 leverage (core) capital (to adjusted tangible assets)		9.51	%		10.70	%
Common Equity Tier 1 capital (to risk-weighted assets)		15.51	%		17.83	%
Tier 1 risk-based capital (to risk-weighted assets)		15.51	%		17.83	%
Average equity to average total assets		10.92	%		9.92	%
Other Data:
Number of full service offices		5			5

⁽¹⁾ Represents the difference between the weighted-average yield on interest-earning assets and the weighted-average cost of interest-bearing liabilities for the year.

⁽²⁾ The net interest margin represents net interest income as a percent of average interest-earning assets for the year.

⁽³⁾ The efficiency ratio represents other expense divided by the sum of net interest income after provision for loan loss and other income.

Comparison of Financial Condition at December 31, 2017 and 2016

Total Assets. Total assets increased $40.9 million, or 15.0%, to $314.6 million at December 31, 2017 from $273.7 million at December 31, 2016, primarily reflecting increases in net loans receivable, cash and cash equivalents, loans held for sale, and securities available-for-sale, partially offset by a decrease in securities held-to-maturity.

Cash and cash equivalents increased by $3.0 million, or 40.4%, to $10.4 million at December 31, 2017 from $7.4 million at December 31, 2016, in order to maintain a strong liquidity position in anticipation of funding loan commitments in the first quarter of 2018.

7

Net loans receivable increased $36.5 million, or 16.2%, to $262.7 million at December 31, 2017 from $226.2 million at December 31, 2016. The Bank continues to focus on loan production as we continue to primarily grow our residential mortgage, construction, and commercial loan portfolios at a measured pace while still maintaining our credit quality and strict underwriting standards. Residential mortgage loans increased $18.3 million, or 9.7%, to $206.9 million at December 31, 2017 from $188.6 million at December 31, 2016. Multi-family residential loans increased $5.5 million, or 108.7%, to $10.7 million at December 31, 2017 from $5.1 million at December 31, 2016. Commercial real estate loans increased $6.4 million, or 75.4%, to $14.8 million at December 31, 2017 from $8.4 million at December 31, 2016. Construction loans increased $4.6 million, or 75.3%, to $10.8 million at December 31, 2017 from $6.1 million at December 31, 2016. Commercial and industrial loans increased $1.7 million, or 89.0%, to $3.7 million at December 31, 2017 from $1.9 million at December 31, 2016. The Bank originated $108.4 million of residential mortgage loans and sold $70.1 million in conventional mortgage loans and correspondent FHA and VA mortgages in the secondary market to reduce interest rate risk in 2017. The mortgage loans serviced for others increased by $13.9 million, or 11.7%, to $132.4 million at December 31, 2017 compared to $118.6 million at December 31, 2016.

Mortgage loans held for sale increased by $711,000, or 34.5%, to $2.8 million at December 31, 2017 compared to $2.1 million at December 31, 2016 due to a higher volume of loans closed and committed for sale at December 31, 2017 compared to December 31, 2016.

Securities available-for-sale increased by $566,000, or 3.2%, to $18.3 million at December 31, 2017 from $17.7 million at December 31, 2016. The increase was primarily due to purchases of $7.5 million in new securities, mainly U.S. Government and agency obligations and mortgage backed securities, partially offset by maturities and calls of $3.5 million, $3.3 million in mortgage-backed securities principal repayments, $102,000 in net amortization of premiums and accretion of discounts, and an $80,000 decrease in the fair value of securities available-for-sale. Securities held-to-maturity decreased $845,000, or 11.4%, to $6.6 million at December 31, 2017 from $7.4 million at December 31, 2016 due to maturities and calls of $1.3 million, $108,000 of principal repayments on mortgage-backed securities, and $34,000 in net amortization of premiums and accretion of discounts, partially offset by purchases of $547,000 in state and municipal securities.

Deposits and Borrowings. The Company experienced deposit growth in all branches in 2017 with continued focus on growing core deposits and building full service long term client relationships, resulting in an increase in total deposits, primarily money market and certificates of deposit of $33.8 million, or 18.5%, to $216.7 million at December 31, 2017 from $182.9 million at December 31, 2016. The increase in our deposits reflected a $25.3 million increase in certificates of deposit, including individual retirement accounts, a $7.6 million increase in money market accounts, and a $2.1 million increase in interest-bearing checking accounts, partially offset by a $1.2 million decrease in savings accounts and a $38,000 decrease in non-interest bearing checking accounts. Total borrowings from the Federal Home Loan Bank of New York increased $7.6 million, or 13.4%, to $64.4 million at December 31, 2017 from $56.8 million at December 31, 2016. Long-term borrowings increased $634,000, or 1.3%, to $51.4 million at December 31, 2017 from $50.8 million at December 31, 2016 due to $16.5 million in new advances partially offset by $15.8 million in principal repayments on our amortizing advances and maturities in 2017. Short-term borrowings increased by $7.0 million, or 116.7%, to $13.0 million at December 31, 2017 compared to $6.0 million at December 31, 2016 with the intention of reducing these balances in the first quarter of 2018 due to increased deposit growth from additional promotional specials. The increases in both deposits and FHLB borrowings were used to fund the additional growth in the loan portfolio in 2017.

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Stockholders’ Equity. Total stockholders’ equity decreased $640,000, or 2.0%, to $31.2 million at December 31, 2017 from $31.9 million at December 31, 2016 due to a $911,000 decrease in additional paid in capital related to shares of FSB Bancorp, Inc. stock repurchased by the Company, and a $80,000 increase in accumulated other comprehensive loss, partially offset by a $317,000 increase in retained earnings due to $290,000 in net income and a $27,000 reclassification of other comprehensive income and a $34,000 increase resulting from the release of ESOP shares from the suspense account. FSB Bancorp Inc. announced on July 27, 2017 that the Board of Directors had adopted its first stock repurchase program. Under the repurchase program, the Company may repurchase up to 97,084 shares of its common stock, or approximately 5% of its outstanding shares. As of December 31, 2017, the Company had repurchased 69,535 shares at an average price of $15.30 per share. On September 27, 2017, the Board of Directors of the Company approved restricted stock and stock option grants to senior management and directors of the Company, pursuant to the terms of the 2017 Equity Incentive Plan (the “Plan”). The Plan was approved previously by the Company’s shareholders on August 29, 2017. An aggregate of 152,080 stock options and 62,700 shares of restricted stock were granted. The main purpose of the stock repurchases was to fund these stock-based compensation plans. Generally, the grants to senior management and directors vest over a five year period The Bank’s capital ratios continue to classify Fairport Savings Bank as a well capitalized bank, the highest standard of capital rating as defined by the Bank’s regulators.

Comparison of Operating Results for the Years Ended December 31, 2017 and 2016

General. Net income decreased $648,000, or 69.1%, to $290,000 for the year ended December 31, 2017 from $938,000 for the year ended December 31, 2016. The year over year decrease in earnings was attributable to an increase in other expense of $1.2 million, a $120,000 increase in income tax expense, a $91,000 increase in the provision for loan losses, and a decrease of $79,000 in other income, partially offset by a $793,000 increase in net interest income.

Interest and Dividend Income. Total interest and dividend income increased $1.4 million, or 15.2%, to $10.7 million for the year ended December 31, 2017 from $9.3 million for the year ended December 31, 2016. The interest and dividend income increase resulted from a $29.8 million increase year over year in average interest-earning assets, primarily loans, in addition to an 11 basis point increase in the average yield on interest-earning assets from 3.73% for 2016 to 3.84% for 2017.

Interest income on loans, including fees, increased $1.4 million, or 16.4%, to $10.2 million for 2017 from $8.7 million for 2016, reflecting an increase in the average balance of loans to $247.7 million for 2017 from $215.1 million for 2016, in addition to a four basis point increase in average yield on loans. The increase in the average balance of loans was due to our focus on increasing our portfolio of one- to four-family residential, construction, commercial real estate, and commercial and industrial loans. The average yield on loans increased to 4.10% for 2017 from 4.06% for 2016, reflecting increases in market interest rates on most loan products, primarily commercial and consumer loans as a result of upward repricing for adjustable rate loans in a rising interest rate environment.

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Interest income on taxable investment securities increased $35,000 to $304,000 in 2017, from $269,000 in 2016. The average balance of taxable investment securities increased $1.9 million, or 17.5%, to $12.6 million in 2017 from $10.7 million in 2016 although the average yield on investment securities decreased 10 basis points to 2.42% in 2017 from 2.52% in 2016. The average yields on investment securities decreased due to new purchases of shorter term lower yielding securities replacing calls of higher yielding investment securities. Interest income on mortgage-backed securities decreased $86,000 to $116,000 in 2017, from $202,000 in 2016, reflecting a decrease in the average balance of mortgage-backed securities of $4.2 million, or 31.2%, to $9.3 million in 2017 from $13.5 million in 2016 in addition to a decrease in the average yield on mortgage-backed securities of 25 basis points to 1.25% in 2017 from 1.50% in 2016. The average yield continues to be affected by low long-term rates and the impact of higher premium amortization resulting from faster national prepayment speeds on mortgage-backed securities. Interest income on federal funds sold increased $22,000, or 104.5%, to $45,000 in 2017, from $23,000 in 2016 as the average yield on federal funds sold increased by 54 basis points to 0.89% for 2017 from 0.35% for 2016, partially offset by the decrease in the average balance of federal funds sold of $1.4 million for 2017 as compared to 2016. Interest income on tax-exempt securities increased $11,000 to $110,000 in 2017 from $99,000 in 2016. The average balance of tax-exempt securities increased by $1.0 million, or 18.7%, to $6.4 million in 2017 from $5.4 million in 2016, partially offset by a decrease in the average yield of tax-exempt securities of 18 basis points to 2.62% in 2017, from 2.80% in 2016 on a tax equivalent basis.

Total Interest Expense. Total interest expense increased $622,000, or 28.9%, to $2.8 million for the year ended December 31, 2017 from $2.2 million for the year ended December 31, 2016. The increase in total interest expense resulted from a 15 basis point increase in the average cost of interest-bearing liabilities from 0.97% for 2016 to 1.12% for 2017, as a result of higher interest rates paid on deposits, primarily promotional certificates of deposit and money market accounts along with an increase in interest rates on Federal Home Loan Bank borrowings. In addition, the average balance of interest-bearing liabilities increased $26.4 million, or 11.8%, to $249.1 million for 2017 from $222.7 million for 2016.

Interest expense on deposits increased $375,000, or 26.1%, to $1.8 million for 2017 from $1.4 million for 2016 due primarily to increases in the average cost and balances of our deposits. The weighted average rate of deposits increased to 0.96% for 2017 from 0.82% for 2016 as a result of promotional certificates of deposit and higher money market rates to grow branch deposits. In addition, the average balance of our deposits increased $12.9 million, or 7.4%, to $188.7 million for 2017 from $175.7 million for 2016 primarily due to increases in promotional certificates of deposit and money market accounts. The average balance on transaction accounts, traditionally our lower costing deposit accounts consisting of checking, savings, and money market accounts increased by $8.0 million to $99.0 million for 2017 from $91.0 million for 2016, with an increase in the average cost of transaction accounts of 18 basis points to 0.48% in 2017 from 0.30% in 2016. Additionally, the average balance of certificates of deposit (including individual retirement accounts) traditionally our higher cost deposits, increased by $2.9 million to $98.2 million in 2017 from $95.2 million in 2016 with an increase in the average cost of certificates of deposit accounts of 14 basis points to 1.36% in 2017 from 1.22% in 2016.

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Interest expense on Federal Home Loan Bank borrowings increased $247,000, or 34.3%, to $967,000 for the year ended December 31, 2017 from $720,000 for the year ended December 31, 2016. The increase in interest expense on Federal Home Loan Bank borrowings was caused by an increase in our average balance of Federal Home Loan Bank borrowings totaling $60.5 million for 2017 compared to $47.0 million for 2016 along with an increase in the average cost of these funds of seven basis points from 1.53% in 2016 to 1.60% in 2017.

Net Interest Income. Net interest income increased $793,000, or 11.1%, to $8.0 million for the year ended December 31, 2017 from $7.2 million for the year ended December 31, 2016. The increase in net interest income despite a decrease in net interest margin was primarily due to substantially higher average balances in loans year over year, together with modest increases in the average balances of taxable investment securities and state and municipal securities when comparing 2017 to 2016. Net interest-earning assets increased to $31.9 million for 2017 from $28.4 million for 2016. The growth of the Bank continues to focus on loan production, particularly with respect to residential mortgage, construction, commercial real estate, and commercial and industrial loans. Our net interest margin for the year ended December 31, 2017 decreased two basis points to 2.85% from 2.87% for the year ended December 31, 2016. The average cost of interest-bearing liabilities was negatively impacted by an increase in the average cost of interest-bearing deposit accounts due to promotional certificates of deposit and money market accounts as well as an increase in the average cost of Federal Home Loan Bank borrowings.

Provision for Loan Losses. We establish provisions for loan losses which are charged to operations in order to maintain the allowance for loan losses at a level we consider necessary to absorb credit losses inherent in the loan portfolio that are both probable and reasonably estimable at the balance sheet date. In determining the level of the allowance for loan losses, we consider past and current loss experience, evaluations of real estate collateral, current economic conditions, volume and type of lending, adverse situations that may affect a borrower’s ability to repay a loan, and the levels of non-performing and other classified loans. The amount of the allowance is based on estimates and the ultimate losses may vary from such estimates as more information becomes available or conditions change. We assess the allowance for loan losses on a quarterly basis and make provisions for loan losses in order to maintain the allowance.

Based on our evaluation of the above factors, we recorded a $271,000 provision for loan losses for the year ended December 31, 2017 compared to a $180,000 provision for loan losses for the year ended December 31, 2016. The rationale for the increase in 2017 was the result of additional general provisions deemed necessary to support the growth in our residential mortgage, construction, commercial real estate, and commercial and industrial loan portfolios as well as a potentially weaker economy. The allowance for loan losses was $1.3 million or 0.48% of net loans outstanding, at December 31, 2017 compared to $990,000, or 0.44% of net loans outstanding, at December 31, 2016. In 2017 we had no net-charge-offs compared to 2016 where we had $1,000 in net-charge-offs.

Other Income. Other income decreased by $79,000, or 2.2%, to $3.6 million for 2017 from $3.7 million for 2016. The decrease resulted primarily from decreases in realized gains on the sales of loans and the realized gains on sales of securities, partially offset by an increase in mortgage fees. A substantial portion of the year over year decrease was in realized gains on the sale of loans which decreased $106,000, or 4.7% to $2.1 million in 2017 from $2.3 million in 2016 due to a decrease in mortgage loan volume in 2017. The decrease in realized gains on sales of securities was due to no sales of securities in 2017 compared to $36,000 in realized gains on sales of securities in 2016. Mortgage fee income increased by $31,000, or 3.8%, to $845,000 in 2017 from $814,000 in 2016 due to an increase in loan servicing revenue from selling additional loans servicing retained and an increase in commercial loan fees from additional volume in 2017.

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Other Expense. Other expense increased $1.2 million, or 12.3%, to $10.5 million in 2017 from $9.4 million in 2016. The increase was primarily the result of increases in salaries and employee benefits of $514,000, mortgage fees and taxes of $271,000, data processing costs of $162,000, other miscellaneous expense of $156,000, and occupancy expense of $63,000, partially offset by decreases in equipment expense of $48,000 and FDIC premium expense of $35,000. The increase in salaries and employee benefits was primarily due to annual merit increases for existing staff, the increased salary costs associated with additional processing staff to support mortgage operations, and the expense related to the issuance of restricted stock awards and options to senior management and the Board of Directors in the fourth quarter of 2017. The increase in mortgage expense was due to a change in New York State tax law which allowed for a refundable tax credit for mortgage recording tax expensed during the years ended December 31, 2015 and 2016, which resulted in a complete reversal of all mortgage recording tax expensed during those years with a credit of $627,000 for the year ended December 31, 2016 which did not recur in 2017. Data processing costs increased primarily due to the end of first year promotional pricing associated with the conversion of our core processing system from in-house hosting to data center hosting beginning in September 2016. Miscellaneous other expense increased due to additional costs related to legal expense and professional services associated with becoming an SEC reporting company in the second half of 2016. Occupancy expense increased primarily due to the added costs of acquiring additional office space in our Pittsford and Buffalo mortgage origination office locations and additional office building depreciation expense. Equipment expense decreased due to the elimination of a software maintenance agreement that was no longer required in 2017 due to the conversion of our core processing system from in-house hosting to data center hosting in 2016. FDIC premium expense decreased primarily due to a revision in the calculation method resulting in a decreased assessment rate in 2017.

Provision for Income Taxes. Provision for income taxes was $448,000 for 2017, an increase of $120,000 compared to a provision for income taxes of $328,000 for 2016. The effective tax rate was 60.7% in 2017 compared to 25.9% in 2016. The increase was primarily due to the Tax Act that was enacted on December 22, 2017, which reduced the corporate federal income tax rate from 34% to 21% and caused a reevaluation of net deferred tax assets. Generally accepted accounting principles requires that the impact of the provisions of the Tax Act be accounted for in the period of enactment. As such, the additional expense was largely attributable to the reduction in carrying value of net deferred tax assets, primarily unrealized losses on available-for-sale securities, reflecting lower future tax benefits resulting from the lower corporate tax rates.

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Average balances and yields. The following table sets forth average balance sheets, average yields and costs and certain other information at and for the years indicated. All average balances are daily average balances. Non-accrual loans were included in the computation of average balances, but have been reflected in the table as loans carrying a zero yield. The yields set forth below include the effect of deferred fees, discounts and premiums that are accreted or amortized to interest income or interest expense.

	For the Years Ended December 31,
	2017							2016
	Average Balance		Interest Income/ Expense		Yield/ Cost			Average Balance		Interest Income/ Expense		Yield/ Cost
Interest-earning assets:
Loans, including fees	$	247,704	$	10,157		4.10	%	$	215,142	$	8,724		4.06	%
Federal funds sold		5,068		45		0.89			6,495		23		0.35
Securities-taxable		12,563		304		2.42			10,687		269		2.52
Mortgage-backed securities		9,264		116		1.25			13,468		202		1.50
Securities-tax-exempt(1)		6,377		167		2.62			5,372		150		2.80
Total interest-earning assets		280,976		10,789		3.84			251,164		9,368		3.73
Noninterest-earning assets		10,849							10,012
Total assets	$	291,825						$	261,176
Interest-bearing liabilities:
NOW accounts	$	29,659		89		0.30		$	28,437		74		0.26
Passbook savings		26,488		103		0.39			27,410		102		0.37
Money market savings		34,330		284		0.83			24,643		100		0.41
Individual retirement accounts		7,081		75		1.05			7,442		64		0.86
Certificates of deposit		91,103		1,260		1.38			87,806		1,096		1.25
Borrowings		60,457		967		1.60			46,990		720		1.53
Total interest-bearing  liabilities		249,118		2,778		1.12	%		222,728		2,156		0.97	%
Noninterest-bearing liabilities:
Demand deposits		8,526							10,534
Other		2,325							2,004
Total liabilities		259,969							235,266
Stockholders’ equity		31,856							25,910
Total liabilities and stockholders’ equity	$	291,825						$	261,176
Net interest income			$	8,011						$	7,212
Interest rate spread(2)						2.72	%						2.76	%
Net interest-earning assets(3)	$	31,858						$	28,436
Net interest margin(4)						2.85	%						2.87	%
Average interest-earning assets to average interest-bearing liabilities						113	%						113	%

⁽¹⁾ Tax-exempt interest income is presented on a tax equivalent basis using a 34% federal tax rate for the years ended December 31, 2017 and 2016.

⁽²⁾ Interest rate spread represents the difference between the yield on average interest-earning assets and the cost of average interest-bearing liabilities.

⁽³⁾ Net interest-earning assets represent total interest-earning assets less total interest-bearing liabilities.

⁽⁴⁾ Net interest margin represents net interest income divided by total interest-earning assets.

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Rate/Volume Analysis

The following table presents the effects of changing rates and volumes on our net interest income for the years indicated. The rate column shows the effects attributable to changes in rate (changes in rate multiplied by prior volume). The volume column shows the effects attributable to changes in volume (changes in volume multiplied by prior rate). The net column represents the sum of the prior columns. For purposes of this table, changes attributable to both rate and volume, which cannot be segregated, have been allocated proportionately, based on the changes due to rate and the changes due to volume.

	For the Years Ended December 31, 2017 vs. 2016
	Increase (Decrease) Due to
	Volume			Rate			Net
	(In thousands)
Interest-earning assets:
Loans, including fees	$	1,345		$	88		$	1,433
Federal funds sold		(4	)		26			22
Securities-taxable		45			(10	)		35
Mortgage-backed securities		(56	)		(30	)		(86	)
Securities-tax-exempt(1)		26			(9	)		17
Total interest-earning assets		1,356			65			1,421
Interest-bearing liabilities:
NOW accounts		3			12			15
Passbook savings		(2	)		3			1
Money market savings		51			133			184
Individual retirement accounts		(3	)		14			11
Certificates of deposit		44			120			164
Borrowings		213			34			247
Total interest-bearing liabilities		306			316			622
Net change in net interest income	$	1,050		$	(251	)	$	799

⁽¹⁾ Tax-exempt interest income is presented on a tax equivalent basis using a 34% federal tax rate for the years ended December 31, 2017 and 2016.

Management of Market Risk

General. The majority of our assets and liabilities are monetary in nature. Consequently, our most significant form of market risk is interest rate risk. Our assets, consisting primarily of mortgage loans, have longer maturities than our liabilities, consisting primarily of deposits. As a result, a principal part of our business strategy is to manage interest rate risk and limit the exposure of our net interest income to changes in market interest rates. Accordingly, we have an asset/liability management committee which is responsible for evaluating the interest rate risk inherent in our assets and liabilities, for determining the level of risk that is appropriate, given our business strategy, operating environment, capital, liquidity and performance objectives, and for managing this risk consistent with the guidelines approved by the Board of Directors.

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We intend to continue to manage our interest rate risk in order to control the exposure of our earnings and capital to changes in interest rates. As part of our ongoing asset-liability management, we intend to use the following strategies to manage our interest rate risk.

(i) invest in shorter to medium-term repricing and/or maturing securities whenever the market allows;

(ii) emphasize the marketing of our money market, savings and checking accounts and increasing the duration of our certificates of deposit;

(iii) sell a portion of our long-term, fixed-rate one- to four-family residential real estate mortgage loans;

(iv) increase our commercial loan portfolio with shorter term, higher yielding loan products; and

(v) maintain a strong capital position.

In 2017, we sold $70.1 million of mortgage loan originations including $35.3 million of conventional conforming fixed-rate residential mortgages and $34.8 million of correspondent FHA and VA mortgage loans to improve our interest rate risk position in the event of increases in market interest rates. We intend to continue to originate and, subject to market conditions, sell long term (terms of 15 years or greater) fixed-rate one- to four-family residential real estate loans.

Interest Rate Risk Management

Our earnings and the market value of our assets and liabilities are subject to fluctuations caused by changes in the level of interest rates. We manage the interest rate sensitivity of our interest-earning assets and interest-bearing liabilities in an effort to minimize the adverse effects of changes in the interest rate environment. The majority of our assets are long-term fixed-rate mortgage loans that do not reprice as quickly as our deposits, therefore we would experience a significant decrease in our net interest income in the event of an inversion of the yield curve. We have $55.7 million in certificates of deposit accounts (including individual retirement accounts) that are scheduled to mature during 2018. If we retain these deposits it most likely will be at a higher cost to us than their current contractual rates.

Additionally, shortening the average maturity of our interest-earning assets by increasing our investments in shorter term loans, as well as loans with variable rates of interest, helps to better match the maturities and interest rates of our assets and liabilities, thereby reducing the exposure of our net interest income to changes in market interest rates. By following these strategies, we believe that we are better-positioned to react to changes in market interest rates.

We have an Asset/Liability Management Committee to coordinate all aspects involving asset/liability management. The committee establishes and monitors the volume, maturities, pricing and mix of assets and funding sources with the objective of managing assets and funding sources to provide results that are consistent with liquidity, growth, risk limits and profitability goals.

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Liquidity and Capital Resources

Liquidity is the ability to meet current and future financial obligations of a short-term nature. Our cash flows are derived from operating activities, investing activities, and financing activities as reported in our consolidated statements of cash flows included in our consolidated financial statements.

The Company strives to optimize the funding of the balance sheet, continually balancing the stability and cost factors of our various funding sources. To achieve this goal, the Company maintains a funding strategy that provides effective diversification in the sources and tenor of funding. The objective is a funding mix diversified across a full range of retail as well as secured and unsecured wholesales sources of funds. In general, funding concentrations (including specific retail products) will be avoided to prevent over-reliance on any one source, maintaining an appropriately diverse mix of existing and potential future funding sources. The Company may use this variety of funding sources to manage the funding cost or balance the interest rate risk position.

These sources will include, but not be limited to retail deposit growth, Fed Funds purchased, brokered deposits, wholesale funding, dealer repos, and other short-term alternatives. Management will ensure access to these sources is being actively managed, monitored, and tested. Alternatively, if necessary the Company may liquidate assets or take other measures consistent with the Contingency Funding Plan.

Our primary sources of funds consist of deposit inflows, loan repayments, advances from the Federal Home Loan Bank of New York, maturities and principal repayments of securities, and loan sales. While maturities and scheduled amortization of loans and securities are predictable sources of funds, deposit flows and mortgage prepayments are greatly influenced by general interest rates, economic conditions and competition. Our asset/liability management committee is responsible for establishing and monitoring our liquidity targets and strategies in order to ensure that sufficient liquidity exists for meeting the borrowing needs and deposit withdrawals of our customers as well as unanticipated contingencies. We seek to maintain a liquidity ratio of 20.0% or greater. For the year ended December 31, 2017, our liquidity ratio averaged 31.6%. We believe that we have enough sources of liquidity to satisfy our short and long-term liquidity needs as of December 31, 2017.

We regularly adjust our investments in liquid assets based upon our assessment of:

(i) expected loan demand;

(ii) expected deposit flows;

(iii) yields available on interest-earning deposits and securities; and

(iv) the objectives of our asset/liability management program.

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Excess liquid assets are invested generally in interest-earning deposits, short and intermediate-term securities and federal funds sold. Our most liquid assets are cash and cash equivalents. The levels of these assets are dependent on our operating, financing, lending, and investing activities during any given period. At December 31, 2017, cash and cash equivalents totaled $10.4 million.

At December 31, 2017, we had $12.4 million in loan commitments outstanding and $5.9 in additional unadvanced portion of construction loans. In addition to commitments to originate loans, we had $17.5 million in unused lines of credit to borrowers. Certificates of deposit (including individual retirement accounts) comprised solely of certificates of deposits, due within one year of December 31, 2017 totaled $55.7 million, or 49.2% of our certificates of deposit (including individual retirement accounts) and 25.7% of total deposits. If these deposits do not remain with us, we will be required to seek other sources of funds, including loan sales, other deposit products, including certificates of deposit, and Federal Home Loan Bank advances. Depending on market conditions, we may be required to pay higher rates on such deposits or other borrowings than we currently pay on the certificates of deposit due on or before December 31, 2018. We believe, however, based on past experience that a significant portion of such deposits will remain with us. We have the ability to attract and retain deposits by adjusting the interest rates offered.

Liquidity management is both a daily and long-term function of business management. If we require funds beyond our ability to generate them internally, borrowing agreements exist with the Federal Home Loan Bank of New York, which provides an additional source of funds. Federal Home Loan Bank advances increased by $7.6 million to $64.4 million at December 31, 2017, compared to $56.8 million at December 31, 2016. At December 31, 2017, we had the ability to borrow approximately $166.2 million from the Federal Home Loan Bank of New York, of which $64.4 million had been advanced.

The Company also has a repurchase agreement with Raymond James providing an additional $10.0 million in liquidity. Funds obtained under the repurchase agreement are secured by the Company’s U.S. Government and agency obligations.  There were no advances outstanding under the repurchase agreement at December 31, 2017 and 2016. In addition to the repurchase agreement with Raymond James, the Company also has an unsecured line of credit through Atlantic Community Bankers Bank which would provide an additional $5.0 million in liquidity. There were no draws or outstanding balances from the line of credit at December 31, 2017 and 2016.

Fairport Savings Bank is subject to various regulatory capital requirements, including a risk-based capital measure. The risk-based capital guidelines include both a definition of capital and a framework for calculating risk-weighted assets by assigning balance sheet assets and off-balance sheet items to broad risk categories. At December 31, 2017, Fairport Savings Bank exceeded all regulatory capital requirements and was considered “well capitalized” under regulatory guidelines. See Note 12 of the notes to the consolidated financial statements.

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Off-Balance Sheet Arrangements

In the ordinary course of business, Fairport Savings Bank is a party to credit-related financial instruments with off-balance sheet risk to meet the financing needs of our customers. These financial instruments include commitments to extend credit. We follow the same credit policies in making commitments as we do for on-balance sheet instruments.

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. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments for unused lines of credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The amount of collateral obtained, if it is deemed necessary by us, is based on our credit evaluation of the customer.

At December 31, 2017 and 2016, we had $12.4 million and $15.2 million, respectively, of commitments to grant loans, $5.9 million and $5.0 million, respectively, of unadvanced portion of construction loans, and $17.5 million and $17.6 million, respectively, of unfunded commitments under lines of credit.

For additional information, see Note 11 of the notes to our consolidated financial statements.

Impact of Inflation and Changing Prices

Our consolidated financial statements and related notes have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). GAAP generally requires the measurement of financial position and operating results in terms of historical dollars without consideration for changes in the relative purchasing power of money over time due to inflation. The impact of inflation is reflected in the increased cost of our operations. Unlike industrial companies, our assets and liabilities are primarily monetary in nature. As a result, changes in market interest rates have a greater impact on performance than the effects of inflation.

Impact of Recent Accounting Pronouncements

For a discussion of the impact of recent accounting pronouncements, see Note 1 of the notes to the consolidated financial statements.

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Market for Common Stock

FSB Bancorp, Inc.’s common stock is traded on the Nasdaq Capital Market under the trading symbol “FSBC.”

The following table sets forth the high and low trading prices for our shares of common stock for the periods indicated. Information from before July 13, 2016 reflects the stock price information of FSB Bancorp’s predecessor, FSB Community Bankshares, Inc., whose shares were quoted on the OTC Pink under the trading symbol “FSBC.” On July 13, 2016, each share of FSB Community common stock not held by its mutual holding company, FSB Community Bankshares, MHC, was converted to 1.0884 shares of FSB Bancorp common stock. Accordingly, we have adjusted the share prices prior to July 13, 2016 to reflect the 1.0884 exchange rate. As of December 31, 2017, there were 1,934,853 shares of our common stock issued and outstanding. On such date our shares were held by approximately 183 holders of record. The Company has never paid cash dividends.

Year Ended December 31, 2017	High		Low
Fourth quarter	$	17.75	$	15.30
Third quarter		16.72		14.60
Second quarter		15.10		14.21
First quarter		14.84		13.97

Year Ended December 31, 2016	High		Low
Fourth quarter	$	14.90	$	12.50
Third quarter		13.70		11.93
Second quarter		12.33		11.59
First quarter		12.82		9.19

19

STOCKHOLDER INFORMATION

ANNUAL MEETING The Annual Meeting of Stockholders will be held at 2:00 p.m., New York time on Wednesday, May 23, 2018 at the Perinton Community Center located at 1350 Turk Hill Road, Fairport, New York 14450.	TRANSFER AGENT Computershare Investor Services PO Box 30170 College Station, Texas 77842-3170 www.computershare.com/investor If you have any questions concerning your stockholder account, please call our transfer agent, noted above, at (800) 368-5948. This is the number to call if you require a change of address or need records or information about lost certificates.
STOCK LISTING The Company's Common Stock is traded on the Nasdaq Capital Market under the symbol “FSBC.”	ANNUAL REPORT A copy of the Company's Annual Report for the year ended December 31, 2017 will be furnished without charge to stockholders as of the record date, upon written request to the Secretary, FSB Bancorp, Inc., 45 South Main Street, Fairport, New York 14450.
SPECIAL COUNSEL Luse Gorman, PC 5335 Wisconsin Avenue, N.W., Suite 780 Washington, D.C. 20015	INDEPENDENT AUDITOR Bonadio & Co., LLP 432 N. Franklin St., Suite 60 Syracuse, New York 13204

20

FSB Bancorp, Inc.

	REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
	To the Board of Directors and Stockholders of FSB Bancorp Inc.: Opinion on the Financial Statements We have audited the accompanying consolidated balance sheets of FSB Bancorp, Inc. (the Company) as of December 31, 2017 and 2016 and the related consolidated statements of income, comprehensive income, stockholders’ equity, and cash flows for each of the years in the two-year period ended December 31, 2017, and the related notes (collectively referred to as the consolidated financial statements). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2017 and 2016, and the results of their operations and their cash flows for each of the years in the two-year period ended December 31, 2017, in conformity with accounting principles generally accepted in the United States of America. Basis for Opinion These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion. We have served as the Company’s auditor since 2011.
432 North Franklin Street, Suite 60 Syracuse, New York 13204 p (315) 476-4004 f (315) 475-1513 www.bonadio.com	/s/ Bonadio & Co., LLP Bonadio & Co., LLP Syracuse, New York March 30, 2018

ALBANY • BATAVIA • BUFFALO • EAST AURORA • GENEVA • NYC • ROCHESTER • RUTLAND, VT • SYRACUSE • UTICA

F-1

FSB Bancorp, Inc.

Consolidated Balance Sheets

December 31, 2017 and 2016

	2017			2016
	(Dollars in Thousands, except share and per share data)
Assets
Cash and due from banks	$	1,672		$	1,634
Interest-earning demand deposits		8,725			5,773
Total Cash and Cash Equivalents		10,397			7,407
Securities available-for-sale, at fair value		18,313			17,747
Securities held-to-maturity, at amortized cost (fair value of 2017 $6,588; 2016 $7,384)		6,575			7,420
Investment in restricted stock, at cost		3,270			2,886
Loans held for sale		2,770			2,059
Loans, net of allowance for loan losses (2017 $1,261; 2016 $990)		262,711			226,192
Bank owned life insurance		3,758			3,696
Accrued interest receivable		824			652
Premises and equipment, net		3,064			3,175
Other assets		2,948			2,487
Total Assets	$	314,630		$	273,721
Liabilities and Stockholders’ Equity
Liabilities
Deposits:
Non-interest-bearing	$	8,385		$	8,423
Interest bearing		208,306			174,511
Total Deposits		216,691			182,934
Short-term borrowings		13,000			6,000
Long-term borrowings		51,447			50,813
Official bank checks		929			318
Other liabilities		1,344			1,797
Total Liabilities		283,411			241,862
Stockholders’ Equity
Preferred stock, par value $0.01; 25,000,000 shares authorized, no shares issued and outstanding		-			-
Common stock; par value $0.01; 50,000,000 shares authorized; 1,934,853 and 1,941,688 shares outstanding in 2017 and 2016, respectively		19			19
Paid-in capital		15,441			16,352
Retained earnings		16,240			15,923
Accumulated other comprehensive loss		(165	)		(85	)
Unearned ESOP shares – at cost		(316	)		(350	)
Total Stockholders’ Equity		31,219			31,859
Total Liabilities and Stockholders’ Equity	$	314,630		$	273,721

The accompanying notes are an integral part of the consolidated financial statements.

F-2

FSB Bancorp, Inc.

Consolidated Statements of Income

Years Ended December 31, 2017 and 2016

	2017		2016
	(Dollars in Thousands, Except Per Share Data)
Interest and Dividend Income
Loans, including fees	$	10,157	$	8,724
Securities - taxable		304		269
Securities - tax exempt		110		99
Mortgage-backed securities		116		202
Other		45		23
Total Interest and Dividend Income		10,732		9,317
Interest Expense
Deposits		1,811		1,436
Short-term borrowings		102		9
Long-term borrowings		865		711
Total Interest Expense		2,778		2,156
Net Interest Income		7,954		7,161
Provision for loan losses		271		180
Net Interest Income after Provision for loan losses		7,683		6,981
Other Income
Service fees		164		157
Fee income		174		169
Realized gain on sale of securities		-		36
Increase in cash surrender value of bank owned life insurance		62		67
Realized gain on sale of loans		2,146		2,252
Mortgage fee income		845		814
Other		185		160
Total Other Income		3,576		3,655
Other Expense
Salaries and employee benefits		6,609		6,095
Occupancy		1,069		1,006
Data processing costs		348		186
Advertising		162		125
Equipment		563		611
Electronic banking		93		115
Directors’ fees		261		249
Mortgage fees and taxes		144		(127	)
FDIC premium expense		103		138
Audit and tax services		182		141
Professional services		217		168
Other		770		663
Total Other Expense		10,521		9,370
Income before Income Taxes		738		1,266
Provision for Income Taxes		448		328
Net Income	$	290	$	938
Basic earnings per common share	$	0.15	$	0.49

The accompanying notes are an integral part of the consolidated financial statements.

F-3

FSB Bancorp, Inc.

Consolidated Statements of Comprehensive Income

Years Ended December 31, 2017 and 2016

	2017			2016
	(In Thousands)
Net Income	$	290		$	938
Other Comprehensive Income (Loss)
Change in unrealized holding losses on securities available-for-sale		(53	)		(86	)
Accretion of net unrealized losses on securities transferred  from available-for-sale(1)		-			323
Reclassification adjustment for realized gains on securities available-for- sale included in net income		-			(24	)
Reclassification adjustment for realized gains on securities held-to-maturity included in net income		-			(12	)
Reclassification of effect of tax rate change on other comprehensive income		(27	)		-
Other Comprehensive Income (Loss), Before Tax		(80	)		201
Income Tax (Provision) Benefit Related to Other Comprehensive Income (Loss)		-			(74	)
Other Comprehensive Income, Net of Tax		(80	)		127
Comprehensive Income	$	210		$	1,065
Tax Effect Allocated to Each Component of Other Comprehensive Income (Loss)
Change in unrealized holding losses on securities available-for-sale	$	-		$	29
Accretion of net unrealized losses on securities transferred  from available-for-sale		-			(115	)
Reclassification adjustment for realized gains on securities available-for-sale included in net income		-			8
Reclassification adjustment for realized gains on securities held-to-maturity included in net income		-			4
	$	-		$	(74	)

The accompanying notes are an integral part of the consolidated financial statements.

⁽¹⁾ The accretion of the unrealized holding losses in accumulated other comprehensive income at the date of transfer partially offsets the amortization of the difference between the par value and the fair value of the investment securities at the date of transfer, and is an adjustment of yield.

F-4

FSB Bancorp, Inc.

Consolidated Statements of Stockholders’ Equity

Years Ended December 31, 2017 and 2016

	Common Stock			Paid-In Capital			Retained Earnings		Accumulated Other Comprehensive Loss			Treasury Stock			Unearned ESOP Shares			Total
	(In Thousands, except share and per share data)
Balance  - January 1, 2016	$	179		$	7,239		$	14,985	$	(212	)	$	(46	)	$	(385	)	$	21,760
Net income		-			-			938		-			-			-			938
Other comprehensive income, net		-			-			-		127			-			-			127
ESOP shares committed to be released		-			9			-		-			-			35			44
Proceeds of common stock offering and conversion of existing shares, net of expenses		(159	)		9,149			-		-			-			-			8,990
Cancel 5,528 treasury shares		(1	)		(45	)		-		-			46			-			-
Balance - December 31, 2016		19			16,352			15,923		(85	)		-			(350	)		31,859
Net income		-			-			290		-			-			-			290
Other comprehensive loss, net		-			-			-		(53	)		-			-			(53	)
Reclassification of effect of tax rate change on other comprehensive income (1)		-			-			27		(27	)		-			-			-
ESOP shares committed to be released		-			18			-		-			-			34			52
Stock based compensation		1			132			-		-			-			-			133
Effect of stock repurchase plan		(1	)		(1,061	)		-		-			-			-			(1,062	)
Balance - December 31, 2017	$	19		$	15,441		$	16,240	$	(165	)	$	-		$	(316	)	$	31,219

⁽¹⁾ Reclassification adjustment from accumulated other comprehensive loss to retained earnings for stranded tax effects resulting from the newly enacted Federal corporate income tax rate of 21% in accordance with the early adoption of ASU 2018-02.

The accompanying notes are an integral part of the consolidated financial statements.

F-5

FSB Bancorp, Inc.

Consolidated Statements of Cash Flows

Years Ended December 31, 2017 and 2016

	2017			2016
	(In Thousands)
Cash Flows from Operating Activities
Net income	$	290		$	938
Adjustments to reconcile net income to net cash flows from operating activities:
Net amortization of premiums and accretion of discounts on investments		136			327
Net gain on sales of securities		-			(36	)
Gain on sale of loans		(2,146	)		(2,252	)
Proceeds from loans sold		72,249			76,220
Loans originated for sale		(70,814	)		(72,147	)
Amortization of net deferred loan origination costs		353			249
Depreciation and amortization		473			444
Provision for loan losses		271			180
Expense related to ESOP		52			44
Deferred income tax expense (benefit)		160			(116	)
Earnings on investment in bank owned life insurance		(62	)		(67	)
(Increase) decrease in accrued interest receivable		(172	)		3
Increase in other assets		(461	)		(900	)
(Decrease) increase in other liabilities		(585	)		675
Net Cash Flows From Operating Activities		(256	)		3,562
Cash Flows from Investing Activities
Purchases of securities available-for-sale		(7,533	)		(12,579	)
Proceeds from maturities and calls of securities available-for-sale		3,500			11,285
Proceeds from sales of securities available-for-sale		-			2,213
Proceeds from principal paydowns on securities available-for-sale		3,284			1,106
Purchases of securities held-to-maturity		(547	)		(2,204	)
Proceeds from maturities and calls of securities held-to-maturity		1,250			7,334
Proceeds from sales of securities held-to-maturity		-			393
Proceeds from principal paydowns on securities held-to-maturity		108			26
Net increase in loans		(37,143	)		(24,791	)
Purchase of restricted stock, net		(384	)		(498	)
Purchase of premises and equipment		(362	)		(875	)
Net Cash Flows From Investing Activities		(37,827	)		(18,590	)
Cash Flows from Financing Activities
Net increase (decrease) in deposits		33,757			(2,627	)
Proceeds from long-term borrowings		16,501			19,000
Repayments on long-term borrowings		(15,867	)		(14,279	)
Net increase in short-term borrowings		7,000			6,000
Net proceeds from stock conversion and offering		-			8,990
Stock based compensation		133			-
Effect of stock repurchase plan		(1,062	)		-
Net increase (decrease) in official bank checks		611			(796	)
Net Cash Flows From Financing Activities		41,073			16,288
Change in Cash and Cash Equivalents		2,990			1,260
Cash and Cash Equivalents - Beginning		7,407			6,147
Cash and Cash Equivalents - Ending	$	10,397		$	7,407
Supplementary Cash Flows Information
Interest paid	$	2,755		$	2,145
Taxes paid	$	361		$	306

The accompanying notes are an integral part of the consolidated financial statements.

F-6

FSB Bancorp, Inc.

Notes to Consolidated Financial Statements

December 31, 2017 and 2016

Note 1 - Nature of Operations and Summary of Significant Accounting Policies

Organization and Nature of Operations

On March 2, 2016, the Boards of Directors of the FSB Community Bankshares, Inc. (“FSB Community”), FSB Community Bankshares, MHC (the “MHC”), and Fairport Savings Bank (the “Bank”) unanimously adopted a Plan of Conversion of FSB Community Bankshares, MHC pursuant to which the MHC undertook a “second-step” conversion and now no longer exists. The Bank reorganized from a two-tier mutual holding company structure to a fully public stock holding company structure effective July 13, 2016, and, as a result is now the wholly-owned subsidiary of FSB Bancorp, Inc. (the “Company”).

FSB Bancorp, Inc., the new stock holding company for the Bank, sold 1,034,649 shares of common stock at $10.00 per share, for gross offering proceeds of $10.3 million in its stock offering. Additionally, after accounting for conversion related expenses of $1.4 million, which offset gross proceeds, the Company received $8.9 million in net proceeds.

Concurrent with the completion of the conversion and reorganization, shares of common stock of FSB Community owned by public stockholders were exchanged for shares of the Company’s common stock so that the former public stockholders of FSB Community owned approximately the same percentage of the Company’s common stock as they owned of FSB Community’s common stock immediately prior to the conversion. Stockholders of FSB Community received 1.0884 shares of the Company’s common stock for each share of FSB Community’s stock they owned immediately prior to completion of the transaction. Cash in lieu of fractional shares was paid based on the offering price of $10.00 per share. As a result of the offering and the exchange of shares, the Company had 1,941,688 shares outstanding as of December 31, 2016.

In accordance with Board of Governors of the Federal Reserve System regulations, at the time of the reorganization, the Company substantially restricted retained earnings by establishing a liquidation account. The liquidation account will be maintained for the benefit of eligible account holders who continue to maintain their accounts at the Bank after conversion. The Bank has established a parallel liquidation account to support the Company’s liquidation account in the event the Company does not have sufficient assets to fund its obligations under its liquidation account. The liquidation accounts will be reduced annually to the extent that eligible account holders have reduced their qualifying deposits. Subsequent increases will not restore an eligible account holder’s interest in the liquidation accounts. In the event of a complete liquidation of the Bank or the Company, each account holder will be entitled to receive a distribution in an amount proportionate to the adjusted qualifying account balances then held. The Bank may not pay dividends if those dividends would reduce equity capital below the required liquidation account amount.

The Company provides a variety of financial services to individuals and corporate customers through its wholly-owned subsidiary, Fairport Savings Bank. The Bank’s operations are conducted in five branches located in Monroe County, New York. The Company and the Bank are subject to the regulations of certain regulatory authorities and undergo periodic examinations by those regulatory authorities.

The Company’s principal business consists of originating one-to-four-family residential real estate mortgages, home equity loans and lines of credit and to a lesser extent, originations of commercial real estate, multi-family, construction, commercial and industrial, and other consumer loans. The Company has five mortgage origination offices located in Pittsford, New York, Watertown, New York, Greece, New York, Lewiston, New York, and Buffalo, New York.

The Bank also provides non-deposit investment services to its customers through its wholly-owned subsidiary, Fairport Wealth Management. Previous to January 15, 2016, Fairport Wealth Management was known as Oakleaf Services Corporation. The results of operations of Fairport Wealth Management are not material to the consolidated financial statements.

F-7

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

Organization and Nature of Operations (Continued)

Basis of Consolidation

The consolidated financial statements include the accounts of the Company, the Bank and Fairport Wealth Management. All significant intercompany accounts and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes in the near term relate to the determination of the allowance for loan losses, deferred tax assets, and the estimation of fair values for accounting and disclosure purposes.

The Company is subject to the regulations of various governmental agencies. The Company also undergoes periodic examinations by the regulatory agencies which may subject it to further changes with respect to asset valuations, amounts of required loss allowances, and operating restrictions resulting from the regulators’ judgements based on information available to them at the time of their examinations.

Significant Group Concentrations of Credit Risk

Most of the Company’s activities are with customers located within Monroe, Livingston, Ontario, Orleans, Wayne, Jefferson, Niagara, and Erie Counties, New York. Note 2 discusses the types of securities that the Company invests in. The concentration of credit by type of loan is set forth in Note 3. Although the Bank has a diversified loan portfolio, its debtors’ ability to honor their contracts is primarily dependent upon the real estate and general economic conditions in those areas.

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash, balances due from banks and interest-earning demand deposits (with an original maturity of three months or less).

Securities

The Company classifies investment securities as either available-for-sale or held-to-maturity. The Company does not hold any securities considered to be trading. Available-for-sale securities are reported at fair value, with net unrealized gains and losses reflected as a separate component of stockholders’ equity, net of the applicable income tax effect. Held-to-maturity securities are those that the Company has the ability and intent to hold until maturity and are reported at amortized cost.

Gains or losses on investment security transactions are based on the amortized cost of the specific securities sold. Premiums and discounts on securities are amortized and accreted into income using the interest method over the period to maturity.

When the fair value of a held-to-maturity or available-for-sale security is less than its amortized cost basis, an assessment is made at the balance sheet date as to whether other-than-temporary impairment (“OTTI”) is present.

The Company considers numerous factors when determining whether potential OTTI exists and the period over which the debt security is expected to recover. The principal factors considered are (1) the length of time and the extent to which the fair value has been less than amortized cost basis, (2) the financial condition of the issuer (and guarantor, if any) and adverse conditions specifically related to the security industry or geographic area, (3) failure of the issuer of the security to make scheduled interest or principal payments, (4) any changes to the rating of a security by a rating agency, and (5) the presence of credit enhancements, if any, including the guarantee of the federal government or any of its agencies.

F-8

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

Securities (Continued)

For debt securities, OTTI is considered to have occurred if (1) the Company intends to sell the security, (2) it is more likely than not the Company will be required to sell the security before recovery of its amortized cost basis, or (3) if the present value of expected cash flows is not sufficient to recover the entire amortized cost basis or carrying value.

For debt securities, credit-related OTTI is recognized in earnings while noncredit-related OTTI on securities not expected to be sold is recognized in other comprehensive income (loss). Credit-related OTTI is measured as the difference between the present value of an impaired security’s expected cash flows and its amortized cost basis or carrying value. Noncredit-related OTTI is measured as the difference between the fair value of the security and its amortized cost, or carrying value, less any credit-related losses recognized. For securities classified as held-to-maturity, the amount of OTTI recognized in other comprehensive income (loss) is accreted to the credit-adjusted expected cash flow amounts of the securities over future periods.

Investment securities are exposed to various risks such as interest rate, market and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect the amounts reported in the accompanying financial statements.

Restricted Stock

Restricted equity securities are held as a long-term investment and value is determined based on the ultimate recoverability of the par value.  Impairment of these investments is evaluated quarterly and is a matter of judgment that reflects management’s view of the issuer’s long-term performance, which includes factors such as the following: its operating performance; the severity and duration of declines in the fair value of its net assets related to its capital stock amount; its commitment to make payments required by law or regulation and the level of such payments in relation to its operating performance; and its liquidity and funding position. After evaluating these considerations, the Company concluded that the par value of these investments will be recovered and, as such, has not recognized any impairment on its holdings of restricted equity securities during the current year.

The Company holds restricted stock from Federal Home Loan Bank and Atlantic Community Bankers Bank.

No impairment charges were recorded related to the restricted stock during 2017 or 2016.

Loans Held for Sale

Mortgage loans held for sale in the secondary market are carried at the lower of cost or fair value. Separate determinations of fair value for residential and commercial loans are made on an aggregate basis. Fair value is determined based solely on the effect of changes in secondary market interest rates and yield requirements from the commitment date to the date of the consolidated financial statements. Realized gains and losses on sales are computed using the specific identification method.

Loan Servicing Rights

The Company retains the servicing on most conventional fixed-rate mortgage loans sold and receives a fee based on the principal balance outstanding.

Loans serviced for others totaled $132,427,000 and $118,565,000 at December 31, 2017 and 2016, respectively.

The Company also sells correspondent FHA and VA mortgage loans, servicing released.

F-9

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

Loan Servicing Rights (Continued)

Loan servicing rights are recorded at fair value when loans are sold with servicing rights retained. The fair value of the mortgage servicing rights (“MSRs”) is determined using a method which utilizes servicing income, discount rates, and prepayment speeds relative to the Bank’s portfolio for MSRs and are amortized over the life of the loan. MSRs amounted to $892,000 and $804,000 at December 31, 2017 and 2016, respectively, and are included in other assets on the consolidated balance sheets. In 2017, $131,000 was capitalized and $43,000 was amortized. In 2016, $268,000 was capitalized with $25,000 amortized.

Loans

Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off generally are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, and net deferred origination fees and costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method over the estimated life of the loan.

The accrual of interest is generally discontinued when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about further collectability of principal or interest, even though the loan is currently performing. A loan may remain on accrual status if it is in the process of collection and is well secured. When a loan is placed on nonaccrual status, unpaid interest credited to income in the current year is reversed. Interest received on nonaccrual loans generally is either applied against principal or reported as interest income, according to management’s judgment as to the collectability of principal. Generally, loans are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time and the ultimate collectability of the total contractual principal and interest is no longer in doubt.

Allowance for Loan Losses

The allowance for loan losses (the “Allowance”) is established as losses are estimated to have occurred in the loan portfolio. The allowance for loan losses is recorded through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the loan is uncollectable. Subsequent recoveries, if any, are credited to the allowance.

The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.

The allowance consists of specific, general and unallocated components. The specific component relates to loans that are deemed impaired and classified as either special mention, substandard, doubtful, or loss. For such loans that are also classified as impaired, an allowance is generally established when the collateral value of the impaired loan is lower than the carrying value of that loan. The general component covers non-classified loans and is based on historical loss experience adjusted for the following qualitative factors: effects of changes in lending policies; national and/or local economic trends and conditions; trends in volume and terms of loans; experience, ability, and depth of management; levels and trends of delinquencies, non-accruals and classified loans; quality of institutions loan review system; collateral value for collateral dependent loans; concentrations of credit; and competition, legal and regulatory requirements on level of estimated credit losses. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.

F-10

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

Allowance for Loan Losses (Continued)

A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent.

Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, the Company does not separately identify individual consumer and residential loans for impairment disclosures unless subject to a troubled debt restructuring.

In addition, Federal regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses and may require the Company to recognize additions to the allowance based on their judgements about information available to them at the time of their examination, which may not be currently available to management. Based on management’s comprehensive analysis of the loan portfolio, management believes the current level of the allowance for loan losses is adequate.

Bank Owned Life Insurance

The Company holds life insurance policies on a key executive. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement.

Premises and Equipment

Premises and equipment are stated at cost. Depreciation and amortization are computed on the straight-line basis over the shorter of the estimated useful lives or lease terms (in the case of leasehold improvements) of the related assets. Estimated useful lives are generally 20 to 30 years for premises and 3 to 10 years for furniture and equipment.

Foreclosed Real Estate

Real estate properties acquired through, or in lieu of, loan foreclosure are initially recorded at fair value less estimated selling costs at the date of foreclosure. Any write-downs based on the asset’s fair value at date of acquisition are charged to the allowance for loan losses. After foreclosure, property held for sale is carried at the lower of the new basis or fair value less any costs to sell. Costs of significant property improvements are capitalized, whereas costs relating to holding property are expensed. Valuations are periodically performed by management, and any subsequent write-downs are recorded as a charge to earnings, if necessary, to reduce the carrying value of the property to the lower of its cost or fair value less cost to sell. The Company had no foreclosed real estate at December 31, 2017 and 2016. At December 31, 2017 the Company had one residential mortgage loan for $37,000 in the process of foreclosure and at December 31, 2016 the Company had no residential real estate loans in the process of foreclosure.

F-11

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

Income Taxes

Income taxes are provided for the tax effects of certain transactions reported in the consolidated financial statements. Income taxes consist of taxes currently due plus deferred taxes related primarily to temporary differences between the financial reporting and income tax basis of the allowance for loan losses, premises and equipment, certain state tax credits, and deferred loan origination costs. The deferred tax assets and liabilities represent the future tax return consequences of the temporary differences, which will either be taxable or deductible when the assets and liabilities are recovered or settled. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized. Deferred tax assets and liabilities are reflected at income tax rates applicable to the period in which the deferred tax assets and liabilities are expected to be realized or settled. On December 22, 2017, the Tax Cuts and Jobs Act (the “Tax Act”) was enacted which reduced the corporate federal income tax rate from 34% to 21% and caused a reevaluation of net deferred tax assets. Generally accepted accounting principles requires that the impact of the provisions of the Tax Act be accounted for in the period of enactment. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.

Advertising Costs

The Company follows the policy of charging the costs of advertising to expense as incurred.

Off-Balance Sheet Financial Instruments

In the ordinary course of business, the Company has entered into off-balance sheet financial instruments consisting of commitments to extend credit. Such financial instruments are recorded in the consolidated balance sheets when they are funded.

Transfers of Financial Assets

Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.

Comprehensive Income (Loss)

Accounting principles generally require that recognized revenue, expenses, gains, and losses be included in earnings. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities, are reported as a separate component of the stockholders’ equity section of the consolidated balance sheets, such items, along with net income, are components of comprehensive income (loss).

Accumulated other comprehensive gain (loss) represents the sum of these items, with the exception of net income, as of the balance sheet date and is represented in the table below.

	As of December 31,
	2017			2016
Accumulated Other Comprehensive Loss By Component:
Unrealized losses on securities available-for-sale	$	(208	)	$	(128	)
Tax effect		43			43
Net unrealized losses on securities available-for-sale		(165	)		(85	)
Accumulated other comprehensive loss	$	(165	)	$	(85	)

F-12

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

Earnings Per Common Share

Basic earnings per common share is calculated by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during the period. Diluted earnings per share is computed in a similar manner to that of basic earnings per share except that the weighted-average number of common shares outstanding is increased to include the number of incremental common shares that would have been outstanding if all potentially dilutive common shares (such as stock options) issued became vested during the period. Net income available to common stockholders is net income of the Company. The Company announced on July 27, 2017 that the Board of Directors had adopted its first stock repurchase program. Under the repurchase program, the Company may repurchase up to 97,084 shares of its common stock, or approximately 5% of its then outstanding shares. As of December 31, 2017, the Company had repurchased 69,535 shares at an average price of $15.30 per share. On September 27, 2017, the Board of Directors of the Company approved restricted stock and stock option grants to senior management and the directors of the Company, pursuant to the terms of the 2017 Equity Incentive Plan (the “Plan”). The Plan was approved previously by the Company’s stockholders on August 29, 2017. An aggregate of 152,080 stock options and 62,700 shares of restricted stock were granted. The grants to senior management and directors vest over a five year period in equal annual installments, with the first installment vesting on the first anniversary date of the grant and succeeding installments on each anniversary thereafter, through 2022. The Company did not grant any restricted stock awards or stock options for the year ended December 31, 2016.

Unallocated common shares held by the ESOP are not included in the weighted-average number of common shares outstanding for purposes of calculating basic earnings per common share until they are committed to be released. The average common shares outstanding were 1,899,473 and 1,899,552 for the years ended December 31, 2017 and December 31, 2016 respectively.

Treasury Stock

Treasury stock was recorded using the cost method and accordingly was presented as a reduction of stockholders’ equity. All treasury stock shares associated with our common stock have been cancelled as a result of the stock conversion and reorganization that occurred in July 2016.

Reclassifications

Amounts in the prior year’s consolidated financial statements have been reclassified whenever necessary to conform to the current year’s presentation. Such reclassifications had no impact on stockholders’ equity or net income as previously reported.

New Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued an Accounting Standard Update (“ASU”) (ASU 2014-09) to amend its guidance on “Revenue from Contracts with Customers (Topic 606). The objective of the ASU is to align the recognition of revenue with the transfer of promised goods or services provided to customers in an amount that reflects the consideration which the entity expects to be entitled in exchange for those goods or services. This ASU will replace most existing revenue recognition guidance under GAAP when it becomes effective. In August 2015, the FASB issued an amendment (ASU 2015-14) which defers the effective date of this new guidance by one year. More detailed implementation guidance on Topic 606 was issued in March 2016 (ASU 2016-08), April 2016 (ASU 2016-10), May 2016 (ASU 2016-12), December 2016 (ASU 2016-20), February 2017 (ASU 2017-05), and September 2017 (ASU-2017-13) and the effective date and transition requirements for these ASUs are the same as the effective date and transition requirements of ASU 2014-09. The amendments in ASU 2014-09 are effective for public business entities for annual periods, beginning after December 15, 2017. The Company expects to adopt the revenue recognition guidance beginning January 1, 2018. A significant amount of the Company’s revenues are derived from net interest income on financial assets and liabilities, which are excluded from the scope of the amended guidance.  With respect to noninterest income, the Company has identified revenue streams within the scope of the guidance and is in the final stages of its accounting analysis of the underlying contracts. The Company does not presently expect that changes in the timing of revenue recognition will be material to the amount of annual revenue recognized by the Company. 

F-13

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

New Accounting Pronouncements (Continued)

In August 2014, the FASB issued an amendment (ASU 2014-14) to its guidance on “Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40)”. The objective of the ASU is to reduce the diversity in how creditors classify government-guaranteed mortgage loans, including FHA or VA guaranteed loans, upon foreclosure, to provide more decision-useful information about a creditor’s foreclosed mortgage loans that are expected to be recovered, at least in part, through government guarantees. The amendments in this Update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Public entities would be permitted to elect to early adopt for annual reporting periods beginning after December 15, 2016. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations or financial position.

In January 2016, the FASB issued an Update (ASU 2016-01) to its guidance on “Financial Instruments (Subtopic 825-10)”. This amendment addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. These amendments require equity securities to be measured at fair value with changes in the fair value to be recognized through net income. The amendments also simplify the impairment assessment of equity investments without readily determinable fair values by requiring assessment for impairment qualitatively at each reporting period. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption of the amendments in this Update is not permitted. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations or financial position.

In February 2016, the FASB issued an Update (ASU 2016-02) to its guidance on “Leases (Topic 842)”. The new leases standard applies a right-of-use (ROU) model that requires a lessee to record, for all leases with a lease term of more than 12 months, an asset representing its right to use the underlying asset and a liability to make lease payments. For leases with a term of 12 months or less, a practical expedient is available whereby a lessee may elect, by class of underlying asset, not to recognize an ROU asset or lease liability. The new leases standard requires a lessor to classify leases as either sales-type, direct financing or operating, similar to existing U.S. GAAP. Classification depends on the same five criteria used by lessees plus certain additional factors.

The subsequent accounting treatment for all three lease types is substantially equivalent to existing U.S. GAAP for sales-type leases, direct financing leases, and operating leases. However, the new standard updates certain aspects of the lessor accounting model to align it with the new lessee accounting model, as well as with the new revenue standard under Topic 606. Lessees and lessors are required to provide certain qualitative and quantitative disclosures to enable users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The amendments are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The adoption of this ASU will result in a gross up of the Consolidated Statements of Financial Condition for right-of-use assets and associated lease liabilities for operating leases in which the Company is the lessee. The Company is evaluating the significance and other effects of adoption on the consolidated financial statements and related disclosures. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations. Branch building leases have been reviewed and are considered immaterial to the financial statements; there are no equipment leases to consider.

In March 2016, the FASB issued an Update (ASU 2016-09) to its guidance on “Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting”. This amendment is intended to simplify the accounting for stock compensation. The areas for simplification in this Update involve several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. For public business entities, the amendments in this Update are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The adoption of this guidance did not have a material impact on our consolidated results of operations or financial position.

F-14

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

New Accounting Pronouncements (Continued)

In June 2016, the FASB issued an Update (ASU 2016-13) to its guidance on “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”. ASU 2016-13 requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model (referred to as the current expected credit loss (CECL) model). Under this model, entities will estimate credit losses over the entire contractual term of the instrument (considering estimated prepayments, but not expected extensions or modifications unless reasonable expectation of a troubled debt restructuring exists) from the date of initial recognition of that instrument. The ASU also replaces the current accounting model for purchased credit impaired loans and debt securities. The allowance for credit losses for purchased financial assets with a more-than insignificant amount of credit deterioration since origination (“PCD assets”), should be determined in a similar manner to other financial assets measured on an amortized cost basis. However, upon initial recognition, the allowance for credit losses is added to the purchase price (“gross up approach”) to determine the initial amortized cost basis. The subsequent accounting for PCD financial assets is the same expected loss model described above. Further, the ASU made certain targeted amendments to the existing impairment model for available-for-sale (AFS) debt securities. For an AFS debt security for which there is neither the intent nor a more-likely-than-not requirement to sell, an entity will record credit losses as an allowance rather than a write-down of the amortized cost basis. For public business entities that are U.S. Securities and Exchange Commission (SEC) filers, the amendments in this Update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. All entities may adopt the amendments in this Update earlier as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. An entity will apply the amendments in this Update through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach). The Company is currently evaluating the potential impact on our consolidated results of operations or financial position. The initial adjustment will not be reported in earnings and therefore will not have any material impact on our consolidated results of operations, but it is expected that it will have an impact on our consolidated financial position at the date of adoption of this Update. At this time, we have not calculated the estimated impact that this Update will have on our Allowance for Loan Losses, however, we anticipate it will have a significant impact on the methodology process we utilize to calculate the allowance. Alternative methodologies and software vendors are currently being considered. Data requirements and integrity are being reviewed and enhancements incorporated into standard processes. The Company is in the early stages of evaluation and implementation of the guidance.

In August 2016, the FASB issued an Update (ASU 2016-15) which clarifies how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The amendments are intended to reduce diversity in practice. The amendment covers the following cash flows: Cash payments for debt prepayment or extinguishment costs will be classified in financing activities. Upon settlement of zero-coupon bonds and bonds with insignificant cash coupons, the portion of the payment attributable to imputed interest will be classified as an operating activity, while the portion of the payment attributable to principal will be classified as a financing activity. Cash paid by an acquirer that isn’t soon after a business combination for the settlement of a contingent consideration liability will be separated between financing activities and operating activities. Cash payments up to the amount of the contingent consideration liability recognized at the acquisition date will be classified in financing activities; any excess will be classified in operating activities. Cash paid soon after the business combination will be classified in investing activities. Cash proceeds received from the settlement of insurance claims will be classified on the basis of the related insurance coverage (that is, the nature of the loss). Cash proceeds from lump-sum settlements will be classified based on the nature of each loss included in the settlement. Cash proceeds received from the settlement of corporate-owned life insurance (COLI) and bank-owned life insurance (BOLI) policies will be classified as cash inflows from investing activities. Cash payments for premiums on COLI and BOLI may be classified as cash outflows for investing, operating, or a combination of both. A transferor’s beneficial interest obtained in a securitization of financial assets will be disclosed as a noncash activity, and cash received from beneficial interests will be classified in investing activities. Distributions received from equity method investees will be classified using either a cumulative earnings approach or a look- through approach as an accounting policy election. The ASU contains additional guidance clarifying when an entity should separate cash receipts and cash payments and classify them into more than one class of cash flows (including when reasonable judgment is required to estimate and allocate cash flows) versus when an entity should classify the aggregate amount into one class of cash flows on the basis of predominance. The amendments are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The Company is currently evaluating the potential impact of adoption of this ASU on our consolidated results of operations or financial position.

F-15

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

New Accounting Pronouncements (Continued)

In November 2016, the FASB issued an Update (ASU 2016-18) to its guidance on “Statement of Cash Flows (Topic 230) Restricted Cash” addresses diversity in practice from entities classifying and presenting transfers between cash and restricted cash as operating, investing or financing activities or as a combination of those activities in the statement of cash flows. The ASU requires entities to show the changes in the total cash, cash equivalents, restricted cash and restricted cash equivalents in the Statement of Cash Flows. As a result, transfers between such categories will no longer be presented in the Statement of Cash Flows. ASU 2016-18 is effective for the fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted provided all amendments are adopted in the same period. Management is evaluating the effect that this guidance will have on consolidated financial statements and disclosures.

In March 2017, the FASB issued an Update (ASU 2017-08) to its guidance on “Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20) related to premium amortization on purchased callable debt securities. The amendments in this Update shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. For public business entities, the amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity should apply the amendments in this Update on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Additionally, in the period of adoption, an entity should provide disclosure about a change in accounting principle. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations or financial position.

In May 2017, the FASB issued an Update (ASU 2017-09) to its guidance on “Compensation - Stock Compensation (Topic 718)” such that an entity must apply modification accounting to changes in the terms or conditions of a share-based payment award unless all of the following criteria are met: (1) The fair value of the modified award is the same as the fair value of the original award immediately before the modification. The standard indicates that if the modification does not affect any of the inputs to the valuation technique used to value the award, the entity is not required to estimate the value immediately before and after the modification. (2) The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the modification. (3) The classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the modification. The amendments are effective for all entities for fiscal years beginning after December 15, 2017, including interim periods within those years. Early adoption is permitted, including adoption in an interim period. The Company is currently evaluating the potential impact of adoption of this ASU on our consolidated results of operations or financial position.

F-16

FSB Bancorp, Inc.

Note 1 - Nature of Operations and Summary of Significant Accounting Policies (Continued)

New Accounting Pronouncements (Continued)

In February 2018, the FASB issued an Update (ASU 2018-02) to its guidance on “Income Statement—Reporting Comprehensive Income (Topic 220).” The amendments in this Update allow a reclassification for the so-called stranded tax effects in accumulated other comprehensive income (loss) resulting from the reduction in the federal corporate income tax rate to 21% made by the Tax Cuts and Jobs Act (the “Tax Act”), which was signed into law by the President on December 22, 2017. ASU 2018-02 amends accounting standards to allow reclassification to retained earnings of the effects of remeasuring deferred tax liabilities and deferred tax assets relating to items remaining within accumulated other comprehensive income (loss) as a result of the Tax Act. The amount of the reclassification is the difference between the amount initially charged or credited directly to other comprehensive income (loss) at the previously enacted U.S. federal corporate income tax rate and the amount that would have been charged or credited directly to other comprehensive income (loss) by applying the newly enacted 21% rate, but excluding the effect of any valuation allowance previously charged to income from continuing operations. ASU 2018-02 is effective for all entities for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted, for public business entities for reporting periods for which financial statements have not yet been issued and should be applied retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate is recognized. The Company has elected to early adopt ASU 2018-02 and it is reflected in the accompanying financial statements.

Change in Accounting Estimate

Due to a change in New York State tax law, mortgage recording tax expensed during the years ended December 31, 2016 and 2015 are now a refundable tax credit, at the election of the tax payer.  Under New York law, a bank that paid special additional mortgage recording tax (“SAMRT”) on residential mortgages in any year beginning on or before January 1, 2015, may elect to treat the unused portion of the SAMRT credit on those mortgages as overpayment of tax to be carried forward or refunded.  Previously, any unused credit was only eligible to be carried forward to future years.  The Company made this election on December 20, 2016 and its impact in 2016 was as follows:

Income from continuing operations	$	627,000
Net income	$	464,000
Net income per share	$	0.24

F-17

FSB Bancorp, Inc.

Note 2 - Securities

The amortized cost and estimated fair value of securities with gross unrealized gains and losses at December 31, 2017 and 2016 are as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In Thousands)
December 31, 2017:
Available-for-Sale:
U.S. Government and agency obligations	$	10,612	$	-	$	(142	)	$	10,470
Mortgage-backed securities - residential		7,909		19		(85	)		7,843
	$	18,521	$	19	$	(227	)	$	18,313
Held-to-Maturity:
Mortgage-backed securities - residential	$	637	$	9	$	-		$	646
State and municipal securities		5,938		41		(37	)		5,942
	$	6,575	$	50	$	(37	)	$	6,588
December 31, 2016:
Available-for-Sale:
U.S. Government and agency obligations	$	8,106	$	3	$	(110	)	$	7,999
Mortgage-backed securities - residential		9,769		42		(63	)		9,748
	$	17,875	$	45	$	(173	)	$	17,747
Held-to-Maturity:
Mortgage-backed securities - residential	$	745	$	13	$	-		$	758
State and municipal securities		6,675		25		(74	)		6,626
	$	7,420	$	38	$	(74	)	$	7,384

Mortgage-backed securities consist of securities that are issued by Fannie Mae (“FNMA”), Freddie Mac (“FHLMC”), Ginnie Mae (“GNMA”), and are collateralized by residential mortgages. U.S. Government and agency obligations include notes and bonds with both fixed and variable rates. State and municipal securities consist of government obligation and revenue bonds.

F-18

FSB Bancorp, Inc.

Note 2 - Securities (Continued)

The amortized cost and estimated fair value by contractual maturity of debt securities at December 31, 2017 are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations.

	Available-for-Sale				Held-to-Maturity
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(In Thousands)
Due in one year or less	$	-	$	-	$	839	$	837
Due after one year through five years		8,607		8,489		3,302		3,294
Due after five years through ten years		1,005		1,001		1,797		1,811
Due after ten years		1,000		980		-		-
Mortgage-backed securities - residential		7,909		7,843		637		646
	$	18,521	$	18,313	$	6,575	$	6,588

There were no realized gains on sales of securities in 2017. There were $24,000 of gross realized gains on sales of securities available-for-sale and $12,000 of gross realized gains on sales of securities held-to-maturity in 2016 resulting from proceeds of $2,606,000. In accordance with accounting guidance, the Company was able to sell securities classified as held-to-maturity in 2016 after the Company had already collected a substantial portion (at least 85%) of the principal outstanding at acquisition due either to prepayments or to scheduled principal and interest payments on debt securities.

No securities were pledged to secure public deposits or for any other purpose required or permitted by law at December 31, 2017 and 2016.

Management has reviewed its loan and mortgage-backed securities portfolios and determined that, to the best of its knowledge, little or no exposure exists to sub-prime or other high-risk residential mortgages. The Company is not in the practice of investing in, or originating, these types of investments or loans.

F-19

FSB Bancorp, Inc.

Note 2 - Securities (Continued)

The following table shows gross unrealized losses and fair value, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position, at December 31, 2017 and 2016:

	Less than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Thousands)
2017:
Available-for-Sale
U.S. Government and agency obligations	$	4,472	$	34	$	5,999	$	108	$	10,471	$	142
Mortgage-backed securities - residential		2,459		23		3,435		62		5,894		85
	$	6,931	$	57	$	9,434	$	170	$	16,365	$	227
2017:
Held-to-Maturity
Mortgage-backed securities – residential(1)	$	-	$	-	$	171	$	-	$	171	$	-
State and municipal Securities		1,574		16		1,331		21		2,905		37
	$	1,574	$	16	$	1,502	$	21	$	3,076	$	37
2016:
Available-for-Sale
U.S. Government and agency obligations	$	6,996	$	110	$	-	$	-	$	6,996	$	110
Mortgage-backed securities - residential		4,441		49		987		14		5,428		63
	$	11,437	$	159	$	987	$	14	$	12,424	$	173
2016:
Held-to-Maturity
Mortgage-backed securities – residential(1)	$	178	$	-	$	-	$	-	$	178	$	-
State and municipal  Securities(1)		4,275		74		45		-		4,320		74
	$	4,453	$	74	$	45	$	-	$	4,498	$	74

⁽¹⁾ Aggregate unrealized loss position of these securities is less than $500.

Management evaluates securities for other-than-temporary impairment at least on a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. In 2017 and 2016, the Company did not record an other-than-temporary impairment charge.

At December 31, 2017, four U.S. Government and agency obligations, four residential mortgage-backed securities and 10 state and municipal securities were in a continuous unrealized loss position for less than twelve months. At December 31, 2017, five U.S. Government and agency obligations, five residential mortgage-backed securities and five state and municipal securities were in a continuous unrealized loss position for more than twelve months. The debt securities and residential mortgage-backed securities were issued by U.S. Government sponsored agencies.

F-20

FSB Bancorp, Inc.

Note 2 - Securities (Continued)

All are paying in accordance with their terms with no deferrals of interest or defaults. Because the decline in fair value is attributable to changes in interest rates, not credit quality, and because management does not intend to sell and will not be required to sell these securities prior to recovery or maturity, no declines are deemed to be other-than-temporary. The state and municipal securities are general obligation (G.O.) bonds backed by the full faith and credit of local municipalities. There has never been a default of a New York G.O. in the history of the state. Historical performance does not guarantee future performance, but it does indicate that the risk of loss on default of a G.O. municipal bond for the Company is relatively low. All are paying in accordance with their terms and with no deferrals of interest or defaults. Because the decline in fair value is attributable to changes in interest rates, not credit quality, and because management does not intend to sell and will not be required to sell these securities prior to recovery or maturity, no declines are deemed to be other-than-temporary.

Note 3 – Loans and The Allowance for Loan Losses

Net loans at December 31, 2017 and 2016 consist of the following:

	2017			2016
	(In Thousands)
Real estate loans:
Secured by one- to four-family residences	$	206,894		$	188,573
Secured by multi-family residences		10,650			5,103
Construction		10,750			6,134
Commercial real estate		14,803			8,440
Home equity lines of credit		17,127			16,797
Commercial & industrial		3,679			1,947
Other loans		70			75
Total Loans		263,973			227,069
Net deferred loan origination (fees) costs		(1	)		113
Allowance for loan losses		(1,261	)		(990	)
Net Loans	$	262,711		$	226,192

To develop and document a systematic methodology for determining the allowance for loan losses, the Company has divided the loan portfolio into two portfolio segments, each with different risk characteristics but with similar methodologies for assessing risk. Each portfolio segment is broken down into loan classes where appropriate. Loan classes contain unique measurement attributes, risk characteristics, and methods for monitoring and assessing risk that are necessary to develop the allowance for loan losses. Unique characteristics such as borrower type, loan type, collateral type, and risk characteristics define each class.

The following table illustrates the portfolio segments and classes for the Company’s loan portfolio:

Portfolio Segment	Class
Real Estate Loans	Secured by one-to-four family residences
	Secured by multi-family residences
	Construction Commercial real estate Home equity lines of credit
Other Loans	Commercial & industrial
	Other loans

F-21

FSB Bancorp, Inc.

Note 3 – Loans and The Allowance for Loan Losses (Continued)

The Company’s primary lending activity is the origination of one- to four-family residential real estate mortgage loans. At December 31, 2017, $206.9 million, or 78.3%, of the total loan portfolio consisted of one- to four-family residential real estate mortgage loans compared to $188.6 million, or 83.0%, of the total loan portfolio at December 31, 2016.

The Company offers home equity lines of credit, which are primarily secured by a second mortgage on one- to four-family residences. At December 31, 2017, home equity lines of credit totaled $17.1 million, or 6.5%, of total loans receivable compared to $16.8 million, or 7.4%, of total loans receivable at December 31, 2016.

The underwriting standards for home equity lines of credit include a determination of the applicant’s credit history, an assessment of the applicant’s ability to meet existing obligations and payments on the proposed loan and the value of the collateral securing the loan. The combined loan-to-value ratio (first and second mortgage liens) for home equity lines of credit is generally limited to 90%. The Company originates home equity lines of credit without application fees or borrower-paid closing costs. Home equity lines of credit are offered with adjustable-rates of interest indexed to the prime rate, as reported in The Wall Street Journal.

Multi-family residential loans generally are secured by rental properties. Multi-family real estate loans are offered with fixed and adjustable interest rates. Loans secured by multi-family real estate totaled $10.7 million, or 4.0%, of the total loan portfolio at December 31, 2017 compared to $5.1 million, or 2.2%, of the total loan portfolio at December 31, 2016. Multi-family real estate loans are originated for terms of up to 20 years. Adjustable-rate multi-family real estate loans are tied to the average yield on U.S. Treasury securities, subject to periodic and lifetime limitations on interest rate changes.

Loans secured by multi-family real estate generally involve a greater degree of credit risk than one- to four-family residential mortgage loans and carry larger loan balances. This increased credit risk is a result of several factors, including the concentration of principal in a limited number of loans and borrowers, the effects of general economic conditions on income producing properties, and the increased difficulty of evaluating and monitoring these types of loans. Furthermore, the repayment of loans secured by multi-family real estate typically depends upon the successful operation of the real estate property securing the loans. If the cash flow from the project is reduced, the borrower’s ability to repay the loan may be impaired.

The Company originates construction loans for the purchase of developed lots and for the construction of single-family residences. At December 31, 2017, construction loans totaled $10.8 million, or 4.1%, of total loans receivable compared to $6.1 million, or 2.7%, at December 31, 2016. At December 31, 2017, the additional unadvanced portion of these construction loans totaled $5.9 million compared to $5.0 million at December 31, 2016. Construction loans are offered to individuals for the construction of their personal residences by a qualified builder (construction/permanent loans).

Before making a commitment to fund a construction loan, the Company requires an appraisal of the property by an independent licensed appraiser. The Company generally also reviews and inspects each property before disbursement of funds during the term of the construction loan.

Construction financing generally involves greater credit risk than long-term financing on improved, owner-occupied real estate. Risk of loss on a construction loan depends largely upon the accuracy of the initial estimate of the value of the property at completion of construction compared to the estimated cost (including interest) of construction and other assumptions. If the estimate of construction cost proves to be inaccurate, the Company may be required to advance additional funds beyond the amount originally committed in order to protect the value of the property. Moreover, if the estimated value of the completed project proves to be inaccurate, the borrower may hold a property with a value that is insufficient to assure full repayment of the loan.

Commercial real estate loans are secured by office buildings, mixed use properties, places of worship and other commercial properties. Loans secured by commercial real estate totaled $14.8 million, or 5.6%, of the Company’s total loan portfolio at December 31, 2017 compared to $8.4 million, or 3.7%, of our total loan portfolio at December 31, 2016.

F-22

FSB Bancorp, Inc.

Note 3 – Loans and The Allowance for Loan Losses (Continued)

The Company generally originates adjustable-rate commercial real estate loans with maximum terms of up to 15 years. The maximum loan-to-value ratio of commercial real estate loans is 80%.

Loans secured by commercial real estate generally are larger than one- to four-family residential loans and involve greater credit risk. Commercial real estate loans often involve large loan balances to single borrowers or groups of related borrowers. Repayment of these loans depends to a large degree on the results of operations and management of the properties securing the loans or the businesses conducted on such property, and may be affected to a greater extent by adverse conditions in the real estate market or the economy in general. Accordingly, the nature of these loans makes them more difficult for management to monitor and evaluate.

The commercial and industrial product set includes loans to individuals or businesses on an installment basis secured by vehicles, equipment or other durable goods for which the loans were made, loans for and secured by machinery and/or equipment for which a legitimate resale market exists, lines of credit to businesses and individuals, and unsecured loans to businesses and individuals on a short-term basis. At December 31, 2017, these loans totaled $3.7 million, or 1.4%, of the total loan portfolio compared to $1.9 million, or 0.9%, at December 31, 2016.

These loans carry a higher risk than commercial real estate loans by the nature of the underlying collateral, which can be business assets such as equipment and accounts receivable. To reduce the risk, management also attempts to secure secondary collateral, such as real estate, and obtain personal guarantees of the borrowers. To further reduce risk and enhance liquidity, these loans generally carry variable rates of interest, repricing in five year periods, and have a maturity of ten years or less.

In 2014, the Company applied and was approved as an SBA lender. SBA acts as a loan guarantor and these loans are generally for commercial business purposes versus real estate. The Company follows the Small Business Administration lending guidelines regarding eligibility, underwriting etc. as stated in SBA’s most current version of SOP 50 10 SBA’s Lender and Development Company Loan Program.

The Company offers a variety of other loans secured by property other than real estate. At December 31, 2017, these other loans totaled $70,000, or 0.1%, of the total loan portfolio compared to other loans totaling $75,000, or 0.1%, of the total loan portfolio at December 31, 2016. These loans include automobile, passbook, overdraft protection and unsecured loans. Due to the relative immateriality of other loans, the Company’s risk associated with these loans is not considered significant.

F-23

FSB Bancorp, Inc.

Note 3 – Loans and The Allowance for Loan Losses (Continued)

The following table sets forth the allowance for loan losses allocated by loan class and the activity in the allowance for loan losses for the years ending December 31, 2017 and 2016. The allowance for loan losses allocated to each class is not necessarily indicative of future losses in any particular class and does not restrict the use of the allowance to absorb losses in other classes.

	Secured by 1-4 family residential		Secured by multi- family residential			Construction		Commercial		Home Equity Lines of Credit			Commercial & Industrial		Other/ Unallocated			Total
	(In Thousands)
At December 31, 2017
Beginning Balance	$	584	$	38		$	31	$	84	$	112		$	28	$	113		$	990
Charge Offs		-		-			-		-		-			-		-			-
Recoveries		-		-			-		-		-			-		-			-
Provisions		232		42			23		64		(5	)		19		(104	)		271
Ending Balance (1)	$	816	$	80		$	54	$	148	$	107		$	47	$	9		$	1,261
At December 31, 2016
Beginning Balance	$	524	$	39		$	6	$	35	$	101		$	11	$	95		$	811
Charge Offs		-		-			-		-		-			-		(1	)		(1	)
Recoveries		-		-			-		-		-			-		-			-
Provisions		60		(1	)		25		49		11			17		19			180
Ending  Balance (1)	$	584	$	38		$	31	$	84	$	112		$	28	$	113		$	990

(1)All Loans are collectively evaluated for impairment.

The Company’s policies, consistent with regulatory guidelines, provide for the classification of loans that are considered to be of lesser quality as substandard, doubtful, or loss assets. An asset is considered substandard if it is inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Substandard assets include those assets characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Assets classified as doubtful have all of the weaknesses inherent in those classified as substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Assets (or portions of assets) classified as loss are those considered uncollectible and of such little value that their continuance as assets is not warranted. Assets that do not expose the Company to risk sufficient to warrant classification in one of the aforementioned categories, but which possess potential weaknesses that deserve close attention, are required to be designated as special mention.

When the Company classifies assets as pass a portion of the related general loss allowances is allocated to such assets as deemed prudent. The allowance for loan losses is the amount estimated by management as necessary to absorb credit losses incurred in the loan portfolio that are both probable and reasonably estimable at the balance sheet date. The Company’s determination as to the classification of its assets and the amount of its loss allowances are subject to review by its principal state regulator, the New York State Department of Financial Services, which can require that the Company establish additional loss allowances. The Company regularly reviews its asset portfolio to determine whether any assets require classification in accordance with applicable regulations.

At December 31, 2017 and 2016, there were no loans considered to be impaired and no troubled debt restructurings.

F-24

FSB Bancorp, Inc.

Note 3 – Loans and The Allowance for Loan Losses (Continued)

The following table presents the risk category of loans by class at December 31, 2017 and 2016:

	Pass		Special Mention		Substandard		Doubtful		Total
	(In Thousands)
2017
One- to four-family residential	$	203,815	$	116	$	2,963	$	-	$	206,894
Multi-family residential		10,650		-		-		-		10,650
Construction		10,750		-		-		-		10,750
Commercial real estate		14,803		-		-		-		14,803
Home equity lines of credit		16,897		-		230		-		17,127
Commercial & industrial		3,679		-		-		-		3,679
Other loans		70		-		-		-		70
Total	$	260,664	$	116	$	3,193	$	-	$	263,973
2016
One- to four-family residential	$	187,079	$	-	$	1,494	$	-	$	188,573
Multi-family residential		5,103		-		-		-		5,103
Construction		6,134		-		-		-		6,134
Commercial real estate		8,440		-		-		-		8,440
Home equity lines of credit		16,498		-		299		-		16,797
Commercial & industrial		1,900		-		47		-		1,947
Other loans		75		-		-		-		75
Total	$	225,229	$	-	$	1,840	$	-	$	227,069

At December 31, 2017, the Company had two non-accrual residential mortgage loans for $153,000 and no non-accrual loans at December 31, 2016. There were no loans that were past due 90 days or more and still accruing interest at December 31, 2017 and 2016. Interest on non-accrual loans that would have been earned if loans were accruing interest was immaterial for 2017.

F-25

FSB Bancorp, Inc.

Note 3 – Loans and The Allowance for Loan Losses (Continued)

Delinquent Loans. Loans are considered past due if the required principal and interest payments have not been received within thirty days of the payment due date. An age analysis of past due loans, segregated by portfolio segment and class of loans, as of December 31, 2017 and December 31, 2016, are detailed in the following table:

	30-59 Days Past Due		60-89 Days Past Due		Greater than 90 Days		Total Past Due		Current		Total Loans Receivable
	(In thousands)
2017
Real estate loans:
One- to four-family residential	$	699	$	-	$	153	$	852	$	206,042	$	206,894
Multi-family residential		-		-		-		-		10,650		10,650
Construction		-		-		-		-		10,750		10,750
Commercial		-		-		-		-		14,803		14,803
Home equity lines of credit		-		-		-		-		17,127		17,127
Commercial & industrial		-		-		-		-		3,679		3,679
Other loans		-		-		-		-		70		70
Total	$	699	$	-	$	153	$	852	$	263,121	$	263,973
2016
Real estate loans:
One- to four-family residential	$	89	$	-	$	-	$	89	$	188,484	$	188,573
Multi-family residential		-		-		-		-		5,103		5,103
Construction		-		-		-		-		6,134		6,134
Commercial		-		-		-		-		8,440		8,440
Home equity lines of credit		-		-		-		-		16,797		16,797
Commercial & industrial		47		-		-		47		1,900		1,947
Other loans		-		-		-		-		75		75
Total	$	136	$	-	$	-	$	136	$	226,933	$	227,069

Management has reviewed its loan portfolio and determined that, to the best of its knowledge, no exposure exists to sub-prime or other high-risk residential mortgages. The Company is not in the practice of originating these types of loans.

Note 4 - Premises and Equipment

Premises and equipment at December 31, 2017 and 2016 are summarized as follows:

	2017			2016
	(In Thousands)
Premises	$	4,946		$	4,355
Furniture and equipment		3,356			3,628
		8,302			7,983
Accumulated depreciation and amortization		(5,238	)		(4,808	)
	$	3,064		$	3,175

F-26

FSB Bancorp, Inc.

Note 4 - Premises and Equipment (Continued)

At December 31, 2017, the Company was obligated under non-cancelable operating leases for existing branches in Penfield, Irondequoit, Webster, and Perinton, New York and for five mortgage origination offices in Watertown, Pittsford, Greece, Lewiston, and Buffalo, New York. Rent expense under leases totaled $448,000 during 2017. Rent expense under the same non-cancelable operating leases, with the exception of the Lewiston mortgage origination office which was opened in November 2017, totaled $429,000 during 2016. Future minimum rental payments under these leases for the next five years and thereafter are as follows (in thousands):

Years ending December 31,
2018	$	449
2019		439
2020		390
2021		368
2022		307
Thereafter		1,626
Total	$	3,579

Note 5 - Deposits

The components of deposits at December 31, 2017 and 2016 consist of the following:

	2017		2016
	(In Thousands)
Non-interest bearing	$	8,385	$	8,423
NOW accounts		31,807		29,725
Regular savings, tax escrow and demand clubs		25,413		26,655
Money market		37,772		30,123
Individual retirement accounts		7,069		6,975
Certificates of deposit		106,245		81,033
	$	216,691	$	182,934

As of December 31, 2017, individual retirement accounts and certificates of deposit have scheduled maturities as follows (in thousands):

2018	$	55,737
2019		31,514
2020		20,067
2021		4,136
2022		1,860
	$	113,314

The aggregate amount of time deposits, each with a minimum denomination of $250,000 was $13,342,000 and $7,746,000 at December 31, 2017 and 2016, respectively. Under the Dodd-Frank Act, deposit insurance per account owner is $250,000.

F-27

FSB Bancorp, Inc.

Note 5 – Deposits (Continued)

Interest expense on deposits for the years ended December 31, 2017 and 2016 is as follows:

	2017		2016
	(In Thousands)
NOW accounts	$	89	$	74
Regular savings and demand clubs		103		102
Money market		284		100
Individual retirement accounts		75		64
Certificates of deposit		1,260		1,096
	$	1,811	$	1,436

F-28

FSB Bancorp, Inc.

Note 6 - Borrowings

Borrowings consist of advances from the Federal Home Loan Bank of New York (FHLB).

The following table sets forth the contractual maturities of borrowings with the FHLB as of December 31:

Advance Date	Maturity Date	Current Rate			2017		2016
					(In Thousands)
04/25/12	04/25/17		1.03	%		-		128
08/16/12	08/16/17		1.00	%		-		306
09/05/12	09/05/19		1.13	%		539		829
11/06/12	11/06/17		0.86	%		-		407
11/27/12	11/27/17		1.12	%		-		1,000
12/19/12	12/19/19		1.20	%		613		902
12/27/12	12/27/17		0.89	%		-		220
01/04/13	01/04/19		1.52	%		1,000		1,000
01/15/13	01/16/18		1.18	%		1,000		1,000
01/22/13	01/23/17		0.96	%		-		1,000
01/22/13	01/22/18		1.20	%		1,000		1,000
01/22/13	01/22/19		1.44	%		1,000		1,000
02/20/13	02/21/20		1.28	%		331		475
02/20/13	02/21/23		1.77	%		547		646
07/02/13	07/02/18		1.35	%		274		682
07/22/13	07/23/18		1.27	%		275		681
09/19/13	09/19/18		1.37	%		171		375
01/21/14	01/22/18		1.72	%		1,000		1,000
01/21/14	01/22/19		1.45	%		240		442
03/20/14	03/20/19		1.50	%		411		714
03/24/14	03/24/17		1.32	%		-		1,500
07/21/14	07/21/21		1.94	%		541		682
07/21/14	07/22/19		2.08	%		500		500
07/21/14	07/23/18		1.79	%		1,000		1,000
08/06/14	08/06/18		1.80	%		1,000		1,000
08/21/14	08/21/19		2.12	%		1,000		1,000
10/02/14	10/04/21		2.00	%		1,153		1,434
10/15/14	10/15/21		1.69	%		574		715
11/28/14	11/29/21		1.90	%		1,175		1,455
12/31/14	12/31/19		1.63	%		427		626
12/31/14	01/02/18		1.52	%		1,000		1,000
01/14/15	01/14/20		1.73	%		1,500		1,500
01/21/15	01/21/20		1.79	%		500		500
01/21/15	01/21/21		1.97	%		500		500
04/13/15	04/13/20		1.74	%		1,000		1,000
05/20/15	05/20/20		1.52	%		509		708
05/20/15	05/20/22		1.91	%		658		796
06/25/15	06/25/20		1.65	%		527		725
06/25/15	06/26/17		1.14	%		-		1,000
10/29/15	10/29/20		1.51	%		1,185		1,579
10/29/15	10/29/20		1.90	%		1,000		1,000
01/27/16	01/27/21		1.92	%		1,000		1,000
01/27/16	01/27/23		1.87	%		751		888
02/12/16	02/13/23		1.66	%		761		898
02/12/16	02/13/23		2.04	%		500		500

F-29

FSB Bancorp, Inc.

Note 6 – Borrowings (Continued)

Advance Date	Maturity Date	Current Rate			2017		2016
					(In Thousands)
08/24/16	08/24/17		1.01	%		-		1,000
08/24/16	08/24/18		1.22	%		1,000		1,000
09/21/16	03/21/17		0.83	%		-		1,000
09/21/16	09/21/17		1.06	%		-		2,000
09/30/16	03/30/17		0.79	%		-		1,000
10/28/16	10/28/20		1.57	%		1,000		1,000
11/04/16	11/04/21		1.72	%		2,000		2,000
11/17/16	11/17/21		2.13	%		1,000		1,000
11/17/16	11/17/21		1.78	%		807		1,000
11/17/16	11/17/23		2.07	%		866		1,000
11/28/16	11/29/19		1.78	%		1,500		1,500
12/08/16	12/08/17		1.22	%		-		1,000
12/21/16	06/21/17		0.95	%		-		1,000
12/21/16	12/23/19		1.91	%		1,000		1,000
12/30/16	01/03/17		0.74	%		-		3,000
01/04/17	01/04/19		1.62	%		1,500		-
01/19/17	01/21/20		1.91	%		1,000		-
03/24/17	03/24/22		2.00	%		1,309		-
03/24/17	03/25/24		2.28	%		1,367		-
07/24/17	07/24/20		1.88	%		1,000		-
07/24/17	07/26/21		2.03	%		1,000		-
07/24/17	07/25/22		1.94	%		936		-
08/31/17	08/31/18		1.55	%		1,000		-
08/31/17	08/31/21		1.96	%		1,000		-
09/11/17	09/11/20		1.80	%		1,000		-
09/11/17	09/12/22		2.07	%		1,500		-
09/27/17	09/27/18		1.66	%		1,500		-
09/27/17	09/27/22		2.28	%		1,000		-
10/04/17	04/04/18		1.50	%		1,500		-
11/27/17	05/29/18		1.76	%		3,500		-
12/04/17	03/05/18		1.59	%		1,500		-
12/08/17	04/09/18		1.64	%		1,000		-
12/11/17	01/11/18		1.55	%		1,500		-
12/11/17	03/12/18		1.61	%		1,500		-
12/29/17	01/02/18		1.53	%		2,500		-
					$	64,447	$	56,813

Borrowings are secured by residential mortgages with a carrying amount of $190,382,000 at December 31, 2017 and the Company’s investment in FHLB stock. As of December 31, 2017, $101,788,000 was available for borrowings. At December 31, 2016, the carrying amount of borrowings secured by residential mortgages was $165,546,000 and $90,868,000 was available for new borrowings.

F-30

FSB Bancorp, Inc.

Note 6 – Borrowings (Continued)

The following table sets forth the contractual maturities of all FHLB borrowings at December 31, 2017 (dollars in thousands):

	Contractual Maturity		Weighted Average Rate
2018	$	23,220		1.57	%
2019		9,730		1.66
2020		10,553		1.72
2021		10,750		1.90
2022		5,403		2.05
Thereafter		4,791		2.00
	$	64,447		1.73	%

The Company also has a repurchase agreement with Raymond James providing an additional $10 million in liquidity collateralized by the Company’s U.S. Government and agency obligations. There were no advances outstanding under the repurchase agreement at December 31, 2017 and 2016. Securities are not pledged until the borrowing is initiated. In addition to the repurchase agreement with Raymond James, the Company also has an unsecured line of credit through Atlantic Community Bankers Bank which would provide an additional $5 million in liquidity. There were no draws or outstanding balances from the line of credit at December 31, 2017 and 2016.

Note 7 - Income Taxes

The provision for income taxes for 2017 and 2016 consists of the following:

	2017		2016
	(In Thousands)
Current
Federal	$	279	$	439
State		4		4
Deferred		165		(115	)
	$	448	$	328

During 2017, the Tax Act was signed into law. The most significant impact of the Act is the reduction in the corporate federal income tax rate from a maximum rate of 35% to 21% beginning in 2018. As a result, the Company revalued its deferred tax assets and liabilities at its new effective tax rate and recorded a net adjustment of $228,000 to income tax expense to reduce the carrying value of the net deferred tax assets. The Company’s effective tax rate was 61% and 26% in 2017 and 2016, respectively. The effective tax rate primarily reflects the impact of non-tax interest and dividends from tax exempt securities, as well as a partial release of a component of the deferred tax asset valuation allowance during 2016, and a reduction in tax rates, as part of the Act.

F-31

FSB Bancorp, Inc.

Note 7 - Income Taxes (Continued)

Items that give rise to differences between income tax expense included in the consolidated statements of income and taxes computed by applying the statutory federal tax at a rate of 34% in 2017 or 2016 included the following (dollars in thousands):

	2017						2016
	Amount			% of Pre-tax Income			Amount			% of Pre-tax Income
Federal Tax at a Statutory rate	$	252			34	%	$	431			34	%
State taxes, net of Federal provision		(108	)		(15	)		119			9
Change in tax rate		228			31			-			-
Change in valuation allowance		106			14			(178	)		(14	)
Nontaxable interest and dividend income		(42	)		(6	)		(44	)		(3	)
Other items		12			3			-			-
Income tax provision	$	448			61	%	$	328			26	%

Deferred income tax assets and liabilities resulting from temporary differences are summarized as follows and are included in other assets at December 31, 2017 and at December 31, 2016 in the accompanying consolidated balance sheets:

	2017			2016
	(In Thousands)
Deferred tax assets:
Deferred loan origination fees	$	92		$	95
Allowance for loan losses - Federal		330			379
State tax credits		1,075			1,102
Depreciation		-			64
Supplemental Executive Retirement Plan		208			290
Unrealized loss on securities available for sale and transferred to  held to maturity		44			43
Net operating loss		270			159
Stock compensation		14			-
Other		1			-
		2,034			2,132
Valuation allowance		(1,424	)		(1,318	)
Total deferred tax assets, net of valuation allowance		610			814
Deferred tax liabilities:
Depreciation		(9	)		-
Mortgage servicing rights		(233	)		(308	)
Total deferred tax liabilities		(242	)		(308	)
Net deferred tax asset	$	368		$	506

F-32

FSB Bancorp, Inc.

Note 7 - Income Taxes (Continued)

The Company has recorded a valuation allowance for mortgage recording tax credits incurred before 2015 as well as state tax deductions since anticipated levels of future state taxable income makes it more likely than not that all of these tax benefits will not be used. Beginning in 2015, the New York State Special Additional Mortgage Recording Tax Credit became a refundable credit. To the extent that the credit exceeds the Company’s New York State tax liability, any remaining credit will be refunded to the Company. In addition, a valuation allowance in the amount of $88,000 was established in 2010 against a portion of the allowance for loan loss because future realization of the full tax benefit of that deferred tax asset was deemed to be unlikely. After fully utilizing its Federal Net Operating Loss (“NOL”) carryforward during 2013 and realizing increased and consistent current taxable income over the past 3 years, management determined that half (or $44,000) of that component of the valuation allowance should be reversed during 2015, with the remaining reversed in 2016.

As a thrift institution, the Bank is subject to special provisions in the income tax laws regarding its allowable income tax bad debt deduction and related tax basis bad debt reserves. Deferred income tax liabilities are to be recognized with respect to any base-year reserves which are to become taxable (or "recaptured") in the foreseeable future.

Under current income tax laws, the base-year reserves would be subject to recapture if the Company pays a cash dividend in excess of earnings and profits or liquidates. The Bank does not expect to take any actions in the foreseeable future that would require the recapture of any Federal reserves. As a result, a deferred tax liability has not been recognized with respect to the Federal base-year reserve of $1,518,000 at December 31, 2017 and 2016, because the Bank does not expect that this amount will become taxable in the foreseeable future. The unrecognized deferred tax liability with respect to the Federal base-year reserve was $319,000 at December 31, 2017. It is more likely than not that this liability will never be incurred because, as noted above, the Bank does not expect to take any action in the future that would result in this liability being incurred.

The Company's Federal and New York State tax returns, constituting the returns of the major taxing jurisdictions, are subject to examination by the taxing authorities for 2014, 2015, and 2016 as prescribed by applicable statute. No waivers have been executed that would extend the period subject to examination beyond the period prescribed by statute.

F-33

FSB Bancorp, Inc.

Note 8 – Accumulated Other Comprehensive Loss

Changes in the components of accumulated other comprehensive loss (“AOCI”), net of tax, for the periods indicated are summarized in the table below, in thousands.

	For the year ended December 31, 2017
	Unrealized Gains and Losses on Available for Sales Securities			Total
Beginning balance	$	(85	)	$	(85	)
Other comprehensive (loss) income before reclassifications		(80	)		(80	)
Amounts reclassified from AOCI		-			-
Ending balance	$	(165	)	$	(165	)

	For the year ended December 31, 2016
	Unrealized Gains and Losses on Available for Sales Securities			Unrealized Losses on Securities Transferred to Held to Maturity			Total
Beginning balance	$	(4	)	$	(208	)	$	(212	)
Other comprehensive (loss) income before reclassifications		(57	)		208			151
Amounts reclassified from AOCI		(24	)		-			(24	)
Ending balance	$	(85	)	$	-		$	(85	)

The following table presents the amounts reclassified out of each component of AOCI for the indicated annual period in thousands:

For the year ended December 31,
Details about AOCI	2016			Affected Line Item in the Statement of Income
Available for sale securities	$	24		Realized gain on sale of securities
Held to maturity securities		12		Realized gain on sale of securities
		(12	)	Provision for Income Taxes
	$	24		Net Income

There were no amounts reclassified out of AOCI for the year ended December 31, 2017.

F-34

FSB Bancorp, Inc.

Note 9 - Employee Benefit Plans

The Bank has a 401(k) plan for all eligible employees. Employees are eligible for participation in the 401(k) Plan after one year of service and attaining age 21. The 401(k) Plan allows employees to contribute 1% to 100% of their annual salary subject to statutory limitations. Matching contributions made by the Bank are 100% of the first 6% of compensation that an employee contributes to the 401(k) Plan. In addition, the Bank may make a discretionary contribution as a percentage of each eligible employee’s annual base compensation including the value of ESOP shares allocated. Matching contributions to the 401(k) Plan amounted to $225,000 and $189,000 for the years ended December 31, 2017 and 2016, respectively. Discretionary contributions to the 401(k) Plan were $85,000 and $77,000 for the years ended December 31, 2017 and 2016, respectively.

The Bank sponsors an Employee Stock Ownership Plan (ESOP) for eligible employees who have attained age 21 and completed one year of employment. The cost of shares not committed to be released is presented in the accompanying consolidated balance sheets as a reduction of stockholders’ equity. Allocations to individual accounts are based on participant compensation. As shares are committed to be released to participants, the Company reports compensation expense equal to the current market price of the shares and the shares become outstanding for earnings per share computations. The difference between the market price and the cost of shares committed to be released is recorded as an adjustment to additional paid-in-capital. Any dividends on allocated shares reduce retained earnings. Any dividends on unallocated ESOP shares reduce debt and accrued interest. In connection with establishing the ESOP in 2007, the ESOP borrowed $700,000 from FSB Community to purchase 69,972 common shares of FSB Community’s stock. The loan is being repaid in twenty equal annual installments through 2026. The loan bears interest at the prime rate.

Shares are released to participants on a straight line basis as the loan is repaid and totaled 3,808 shares for each of the years ended December 31, 2017 and December 31, 2016. Total expense for the ESOP was $52,000 and $44,000 for the years ended December 31, 2017 and 2016, respectively. At December 31, 2017, the Company had 34,271 unearned ESOP shares having an aggregate market value of $582,607.

The Bank has a supplemental executive retirement plan (SERP) for two of its executives. All benefits provided under the SERP are unfunded and, as these executives retire, the Company will make payments to participants. The Company has recorded $797,000 and $759,000 at December 31, 2017 and 2016 respectively, for the SERP in other liabilities. In 2017 and 2016, the expense under the SERP totaled $38,000 and $138,000, respectively.

On September 27, 2017, the Board of Directors of the Company approved the grant of restricted stock awards to its Directors and executive officers under the 2017 Equity Incentive Plan that was approved at the special meeting of stockholders on August 29, 2017 when 77,668 shares were authorized for award. A total of 21,380 restricted stock awards were granted to the 11 external directors of the Company and a total of 41,320 restricted stock awards, in total, were granted to three executive officers. The awards will vest ratably over five years (20% per year for each year of the participant’s service with the Company).

The Bank also has a stock-based compensation plan which allows the Company to issue up to 194,168 stock options. On October 2, 2017 and October 30, 2017, the Board of Directors granted a combined total of 152,080 options to buy stock under the plan at exercise prices of $16.72 and $16.69, the fair value of the stock as of October 2^nd and October 30^th, respectively. These options have a 10-year term and are vested over a five year period.

F-35

FSB Bancorp, Inc.

Note 9 - Employee Benefit Plans (Continued)

A summary of the Company’s stock option activity and related information for its option plans for the years ended December 31, 2017 and 2016 is as follows:

	2017				2016
	Options		Weighted Average Exercise Price Per Share		Options		Weighted Average Exercise Price Per Share
Outstanding at beginning of year		-	$	-		-	$	-
Grants		152,080		16.72		-		-
Exercised		-		-		-		-
Outstanding at year end		152,080	$	16.72		-	$	-
Exercisable at year end		-	$	-		-	$	-

The grants to senior management and directors vest over a five year period in equal annual installments, with the first installment vesting on the first anniversary date of the grant and succeeding installments on each anniversary thereafter, through 2022.

The compensation expense of the awards is based on the fair value of the instruments on the date of grant. The Company recorded compensation expense in the amount of $132,000 for the year ended December 31, 2017 and is expected to record $269,000 in 2018 through 2022.

Note 10 - Related Party Transactions

Certain employees, executive officers and directors are engaged in transactions with the Bank in the ordinary course of business. It is the Bank’s policy that all related party transactions are conducted at “arms length” and all loans and commitments included in such transactions are made in the ordinary course of business, on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with persons not related to the Bank and do not involve more than the normal risk of collectability or present other unfavorable terms.

As of December 31, 2017 and 2016, loans outstanding with related parties were $560,000 and $596,000, respectively. During 2017, there were no new loans or sales and repayments totaled $36,000.

F-36

FSB Bancorp, Inc.

Note 11 - Commitments

The Bank is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments. The Bank’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual amount of those instruments summarized as follows at December 31, 2017 and 2016:

	2017		2016
	(In Thousands)
Commitments to extend credit:
Commitments to grant loans	$	12,397	$	15,199
Unadvanced portion of construction loans		5,945		5,009
Unfunded commitments under lines of credit		17,523		17,587
	$	35,865	$	37,795

Commitments to grant loans at fixed-rates at December 31, 2017 totaled $10,836,000 and had interest rates that ranged from 3.25% to 5.25%.

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. 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 had two commercial letters of credit for $414,000 at December 31, 2017 and two commercial letters of credit for $110,000 at December 31, 2016.

The Bank evaluates each customer’s credit worthiness on a case-by-case basis. The amount and type of collateral obtained, if deemed necessary by the Bank upon extension of credit, varies and is based on management’s credit evaluation of the counterparty.

In the ordinary course of business, the Bank sells residential mortgage loans to third parties and in certain limited situations, such as in the event of an early payment default, the Bank retains credit risk exposure on those residential mortgage loans and may be required to repurchase them or to indemnify guarantors for certain losses. The Bank may also be required to repurchase residential mortgage loans when representations and warranties made by the Bank in connection with those sales are breached. When a residential mortgage loan sold to an investor fails to perform according to its contractual terms, the investor will typically review the loan file to search for errors that may have been made in the process of originating the loan. If errors were discovered and it is determined that such errors constitute a breach of a representation or warranty made to the investor in connection with the Bank’s sale of the residential mortgage loan, the Bank will be required to either repurchase the loan or indemnify the investor for losses sustained. The bank has not been required to repurchase any residential mortgage loans or indemnify any investors for any such errors.

Note 12 - Regulatory Matters

The Bank is subject to various regulatory capital requirements. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific guidelines that involve quantitative measures of the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Bank’s capital amounts and classification are subject to qualitative judgments by the regulators about components, risk weightings, and other factors.

F-37

FSB Bancorp, Inc.

Note 12 - Regulatory Matters (Continued)

Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios (set forth in the table below) of total, Tier 1 capital (as defined), and Common Equity Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 to adjusted total assets (as defined). Management believes that, as of December 31, 2017 and 2016, the Bank met all capital adequacy requirements to which it was subject. As of December 31, 2017, the most recent notification categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized the Bank must maintain minimum total risk-based, Tier 1 risk-based, Common Equity Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the following table. There are no conditions or events since that notification that management believes have changed the Bank’s status as well capitalized.

The Bank’s actual capital amounts and ratios are presented in the table below.

Minimum

To Be "Well-

Minimum

Capitalized"

Well-Capitalized

For Capital

Under Prompt

With Buffer, Fully

Actual

Adequacy Purposes

Corrective Provisions

Phased in for 2019

(Dollars in thousands)

Amount

Ratio

Amount

Ratio

Amount

Ratio

Amount

Ratio

As of December 31, 2017

Total Core Capital (to Risk-Weighted Assets)

$

30,230

16.18

%

³$14,946

³8.0

%

³$18,683

³10.0

%

³$19,617

³10.5

%

Tier 1 Capital (to Risk-Weighted Assets)

28,969

15.51

³11,210

³6.0

³14,946

³8.0

³15,881

³8.5

Tier 1 Common Equity (to Risk-Weighted Assets)

28,969

15.51

³8,407

³4.5

³12,144

³6.5

³13,078

³7.0

Tier 1 Capital (to Assets)

28,969

9.51

³12,183

³4.0

³15,229

³5.0

³15,229

³5.0

As of December 31, 2016:

Total Core Capital (to Risk-Weighted Assets)

$

29,264

18.45

%

³$12,689

³8.0

%

³$15,861

³10.0

%

³$16,654

³10.5

%

Tier 1 Capital (to Risk-Weighted Assets)

28,274

17.83

³9,516

³6.0

³12,689

³8.0

³13,482

³8.5

Tier 1 Common Equity (to Risk-Weighted Assets)

28,274

17.83

³7,137

³4.5

³10,309

³6.5

³11,102

³7.0

Tier 1 Capital (to Assets)

28,274

10.70

³10,572

³4.0

³13,214

³5.0

³13,214

³5.0

The FRB has issued a policy guidance regarding the payment of dividends by bank holding companies.  In general, the FRB’s policies provide that dividends should be paid only out of current earnings and only if the prospective rate of earnings retention by the holding company appears consistent with the organization’s capital needs, asset quality and overall financial condition.  FRB guidance provides for prior regulatory review of capital distributions in certain circumstances such as where the company’s net income for the past four quarters, net of dividends previously paid over that period, is insufficient to fully fund the dividend or the company’s overall rate of earnings retention is inconsistent with the company’s capital needs and overall financial condition.  The ability of a holding company to pay dividends may be restricted if a subsidiary bank becomes undercapitalized.  These regulatory policies could affect the ability of FSB Bancorp to pay dividends or otherwise engage in capital distributions.

Note 13 - Fair Value Measurement and Fair Values of Financial Instruments

Management uses its best judgment in estimating the fair value of the Company’s assets and liabilities; however, there are inherent weaknesses in any estimation technique. Therefore, for substantially all assets and liabilities, the fair value estimates herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction on the dates indicated. The estimated fair value amounts have been measured as of their respective year-ends and have not been re-evaluated or updated for purposes of these consolidated financial statements subsequent to those respective dates. As such, the estimated fair values of assets and liabilities subsequent to the respective reporting dates may be different than the amounts reported at each year-end.

F-38

FSB Bancorp, Inc.

Note 13 - Fair Value Measurement and Fair Values of Financial Instruments (Continued)

Accounting guidance establishes a fair value hierarchy that prioritizes the inputs to valuation methods used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical unrestricted assets or liabilities.

Level 2: Quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability.

Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e. supported with little or no market activity).

An asset or liability’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.

For financial assets measured at fair value on a recurring basis, the fair value measurements by level within the fair value hierarchy used are as follows at December 31:

(In Thousands)
2017	Total		Level 1		Level 2		Level 3
U.S. Government and agency obligations	$	10,470	$	-	$	10,470	$	-
Mortgage-backed securities - residential		7,843		-		7,843		-
Total Available-for-Sale Securities	$	18,313	$	-	$	18,313	$	-

2016	Total		Level 1		Level 2		Level 3
U.S. Government and agency obligations	$	7,999	$	-	$	7,999	$	-
Mortgage-backed securities - residential		9,748		-		9,748		-
Total Available-for-Sale Securities	$	17,747	$	-	$	17,747	$	-

There were no securities transferred out of level 2 securities available-for-sale during the twelve months ended December 31, 2017. No assets or liabilities have been measured on a non-recurring basis at December 31, 2017 or 2016.

Required disclosures include fair value information about financial instruments, whether or not recognized in the consolidated balance sheets, for which it is practicable to estimate that value. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instrument. Certain financial instruments and all non-financial instruments are excluded from the disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company.

F-39

FSB Bancorp, Inc.

Note 13 - Fair Value Measurement and Fair Values of Financial Instruments (Continued)

Due to a wide range of valuation techniques and the degree of subjectivity used in making the estimates, comparisons between the Company’s disclosures and those of other companies may not be meaningful. The following methods and assumptions were used to estimate the fair values of certain of the Company’s assets and liabilities at December 31, 2017 and 2016.

Cash, Due from Banks, and Interest-Earning Demand Deposits

The carrying amounts of these assets approximate their fair values.

Investment Securities

The fair value of securities available-for-sale (carried at fair value) and held-to-maturity (carried at amortized cost) are determined by matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted market prices for the specific securities but rather relying on the securities’ relationship to other benchmark quoted prices and is considered to be a Level 2 measurement.

Investment in Restricted Stock

The carrying value of restricted stock, which consists of Federal Home Loan Bank and Atlantic Community Bankers Bank, approximates its fair value based on the redemption provisions of the restricted stock, resulting in a Level 2 classification.

Loans and Loans Held for Sale

The fair values of loans held in portfolio are estimated using discounted cash flow analyses, using market rates at the balance sheet date that reflect the credit and interest rate-risk inherent in the loans, resulting in a Level 3 classification. Projected future cash flows are calculated based upon contractual maturity or call dates, projected repayments and prepayments of principal. Generally, for variable rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values.

Mortgage loans held for sale in the secondary market are carried at the lower of cost or fair value, resulting in a Level 2 classification. Separate determinations of fair value for residential and commercial loans are made on an aggregate basis. Fair value is determined based solely on the effect of changes in secondary market interest rates and yield requirements from the commitment date to the date of the financial statements.

Accrued Interest Receivable and Payable

The carrying amount of accrued interest receivable and payable approximates fair value.

Deposits

The fair values disclosed for demand deposits (e.g., NOW accounts, non-interest checking, regular savings and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts), resulting in a Level 1 classification. The carrying amounts for variable-rate certificates of deposit approximate their fair values at the reporting date, resulting in a Level 1 classification. Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies market interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits, resulting in a Level 2 classification.

F-40

FSB Bancorp, Inc.

Note 13 - Fair Value Measurement and Fair Values of Financial Instruments (Continued)

Borrowings

The fair values of FHLB long-term borrowings are estimated using discounted cash flow analyses, based on the quoted rates for new FHLB advances with similar credit risk characteristics, terms and remaining maturity, resulting in a Level 2 classification.

The carrying amounts and estimated fair values of the Company’s financial instruments at December 31, 2017 and 2016 are as follows:

		2017				2016
	Fair Value Hierarchy	Carrying Amount		Fair Value		Carrying Amount		Fair Value
		(In Thousands)
Financial assets:
Cash and due from banks	1	$	1,672	$	1,672	$	1,634	$	1,634
Interest bearing demand deposits	1		8,725		8,725		5,773		5,773
Securities available for sale	2		18,313		18,313		17,747		17,747
Securities held to maturity	2		6,575		6,588		7,420		7,384
Investment in restricted stock	2		3,270		3,270		2,886		2,886
Loans held for sale	2		2,770		2,770		2,059		2,059
Loans, net	3		262,711		261,588		226,192		225,569
Accrued interest receivable	1		824		824		652		652
Financial liabilities:
Deposits	1/2		216,691		216,878		182,934		182,969
Borrowings	2		64,447		64,502		56,813		57,008
Accrued interest payable	1		94		94		71		71

F-41

FSB Bancorp, Inc.

Note 14 - FSB Bancorp, Inc. (Parent Company Only) Financial Information

Balance Sheets

	December 31
	2017		2016
	(In Thousands)
Assets
Cash and cash equivalents	$	1,717	$	2,881
Investment in banking subsidiary		29,171		28,610
ESOP loan receivable		365		398
Total Assets	$	31,253	$	31,889
Liabilities and Stockholders’ Equity
Total Liabilities	$	34	$	30
Stockholders’ Equity		31,219		31,859
Total Liabilities and Stockholders’ Equity	$	31,253	$	31,889

Statements of Income

	Year Ended December 31
	2017			2016
	(In Thousands)
Interest Income	$	29		$	20
Other Expense		(301	)		(89	)
Equity in undistributed earnings of banking subsidiary		562			1,007
Net Income	$	290		$	938

F-42

FSB Bancorp, Inc.

Note 14 - FSB Bancorp, Inc. (Parent Company Only) Financial Information (Continued)

Statements of Cash Flows

	Year Ended December 31
	2017			2016
	(In Thousands)
Cash flows from operating activities
Net income	$	290		$	938
Adjustments to reconcile net income to net cash flows from operating activities
Equity in undistributed earnings of banking subsidiary		(562	)		(1,007	)
Stock based compensation		133			-
Decrease in accrued  interest receivable		-			8
Net increase in other liabilities		4			-
Net cash flows from operating activities		(135	)		(61	)
Cash flows from investing activities
Proceeds to banking subsidiary		-			(7,300	)
Proceeds from maturities and calls of securities available-for-sale		-			1,000
Payments received on ESOP loan		33			33
Net cash flows from investing activities		33			(6,267	)
Cash flows from financing activities
Proceeds from stock conversion and offering		-			8,944
Purchase of common stock		(1,062	)		-
Net cash flows from financing activities		(1,062	)		8,944
Net (decrease) increase in cash and cash equivalents		(1,164	)		2,616
Cash and cash equivalents - beginning		2,881			265
Cash and cash equivalents - ending	$	1,717		$	2,881

F-43

EX-23

Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Annual Report on Form 10-K of FSB Bancorp, Inc. for the year ended December 31, 2017 of our report dated March 30, 2018 included in its Registration Statement on Form S-8 (No. 333-210129) relating to the consolidated financial statements for the two years ended December 31, 2017.

/s/ Bonadio & Co., LLP

Bonadio & Co., LLP

Syracuse, New York

March 30, 2018

EX-31.1

Exhibit 31.1

CERTIFICATION

I, Kevin D. Maroney, certify that:

1. I have reviewed this annual report on Form 10-K of FSB Bancorp, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13-a-15(f) and 15d-15(f)) for the registrant have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; and

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation;

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

4. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s Board of Directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weakness in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	March 30, 2018	/s/ Kevin D. Maroney
		Kevin D. Maroney
		President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Angela M. Krezmer, certify that:

1. I have reviewed this annual report on Form 10-K of FSB Bancorp, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13-a-15(f) and 15d-15(f)) for the registrant have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; and

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation;

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s Board of Directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weakness in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	March 30, 2018	/s/ Angela M. Krezmer
		Angela M. Krezmer
		Principal Financial Officer

EX-32

Exhibit 32

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Kevin D. Maroney, President and Chief Executive Officer, and Angela M. Krezmer, Principal Financial Officer of FSB Bancorp, Inc. (the “Company”) each certify in their capacity as an officer of the Company that they have reviewed this Annual Report on Form 10-K of the Company for the fiscal year ended December 31, 2017 and that to the best of their knowledge:

(1) the report fully complies with the requirements of Section 13(a) of the Securities Exchange Act of 1934; and

(2) the information contained in the report fairly presents, in all material respects, the financial condition and results of operations of the Company.

The purpose of this statement is solely to comply with Title 18, Chapter 63, Section 1350 of the United States Code, as amended by Section 906 of the Sarbanes-Oxley Act of 2002.

Date:	March 30, 2018	/s/ Kevin D. Maroney
		Kevin D. Maroney
		President and Chief Executive Officer
Date:	March 30, 2018	/s/ Angela M. Krezmer
		Angela M. Krezmer
		Principal Financial Officer

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Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Mar. 29, 2018	Jun. 30, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	FSB Bancorp, Inc.
Entity Central Index Key	0001667939
Trading Symbol	fsbc
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding		1,941,253
Entity Public Float			$ 26.7
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Amendment Flag	false
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY

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Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash and due from banks	$ 1,672	$ 1,634
Interest-earning demand deposits	8,725	5,773
Total Cash and Cash Equivalents	10,397	7,407
Securities available-for-sale, at fair value	18,313	17,747
Securities held-to-maturity, at amortized cost (fair value of 2017 $6,588; 2016 $7,384)	6,575	7,420
Investment in restricted stock, at cost	3,270	2,886
Loans held for sale	2,770	2,059
Loans, net of allowance for loan losses (2017 $1,261; 2016 $990)	262,711	226,192
Bank owned life insurance	3,758	3,696
Accrued interest receivable	824	652
Premises and equipment, net	3,064	3,175
Other assets	2,948	2,487
Total Assets	314,630	273,721
Deposits:
Non-interest-bearing	8,385	8,423
Interest bearing	208,306	174,511
Total Deposits	216,691	182,934
Short-term borrowings	13,000	6,000
Long-term borrowings	51,447	50,813
Official bank checks	929	318
Other liabilities	1,344	1,797
Total Liabilities	283,411	241,862
Stockholders' Equity
Preferred stock, par value $0.01; 25,000,000 shares authorized, no shares issued and outstanding
Common stock; par value $0.01; 50,000,000 shares authorized; 1,934,853 and 1,941,688 shares outstanding in 2017 and 2016, respectively	19	19
Paid-in capital	15,441	16,352
Retained earnings	16,240	15,923
Accumulated other comprehensive loss	(165)	(85)
Unearned ESOP shares - at cost	(316)	(350)
Total Stockholders' Equity	31,219	31,859
Total Liabilities and Stockholders' Equity	$ 314,630	$ 273,721

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Consolidated Balance Sheets (Parenthenticals) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Fair value securities held to maturity (in dollars)		$ 6,588	$ 7,384
Allowance for loan losses (in dollars)	[1]	$ 1,261	$ 990
Preferred stock, par value (in dollars per share)		$ 0.01	$ 0.01
Preferred stock, shares authorized		25,000,000	25,000,000
Preferred stock, shares issued		0	0
Preferred stock, shares outstanding		0	0
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, shares authorized		50,000,000	50,000,000
Common stock, shares issued		1,934,853	1,941,688
Common stock, shares outstanding		1,934,853	1,941,688

[1] All Loans are collectively evaluated for impairment.

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Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Interest and Dividend Income
Loans, including fees	$ 10,157	$ 8,724
Securities - taxable	304	269
Securities - tax exempt	110	99
Mortgage-backed securities	116	202
Other	45	23
Total Interest and Dividend Income	10,732	9,317
Interest Expense
Deposits	1,811	1,436
Short-term borrowings	102	9
Long-term borrowings	865	711
Total Interest Expense	2,778	2,156
Net Interest Income	7,954	7,161
Provision for loan losses	271	180
Net Interest Income after Provision for loan losses	7,683	6,981
Other Income
Service fees	164	157
Fee income	174	169
Realized gain on sale of securities		36
Increase in cash surrender value of bank owned life insurance	62	67
Realized gain on sale of loans	2,146	2,252
Mortgage fee income	845	814
Other	185	160
Total Other Income	3,576	3,655
Other Expense
Salaries and employee benefits	6,609	6,095
Occupancy	1,069	1,006
Data processing costs	348	186
Advertising	162	125
Equipment	563	611
Electronic banking	93	115
Directors' fees	261	249
Mortgage fees and taxes	144	(127)
FDIC premium expense	103	138
Audit and tax services	182	141
Professional services	217	168
Other	770	663
Total Other Expense	10,521	9,370
Income before Income Taxes	738	1,266
Provision for Income Taxes	448	328
Net Income	$ 290	$ 938
Basic earnings per common share (in dollars per share)	$ 0.15	$ 0.49

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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Statement Of Income and Comprehensive Income [Abstract]
Net Income		$ 290	$ 938
Other Comprehensive Income (Loss)
Change in unrealized holding losses on securities available-for-sale		(53)	(86)
Accretion of net unrealized losses on securities transferred from available-for-sale	[1]		323
Reclassification adjustment for realized gains on securities available-for- sale included in net income			(24)
Reclassification adjustment for realized gains on securities held-to-maturity included in net income			(12)
Reclassification of effect of tax rate change on other comprehensive income		(27)
Other Comprehensive Income (Loss), Before Tax		(80)	201
Income Tax (Provision) Benefit Related to Other Comprehensive Income (Loss)			(74)
Other Comprehensive Income, Net of Tax		(80)	127
Comprehensive Income		$ 210	1,065
Tax Effect Allocated to Each Component of Other Comprehensive Income (Loss)
Change in unrealized holding losses on securities available-for-sale			29
Accretion of net unrealized losses on securities transferred from available-for-sale			(115)
Reclassification adjustment for realized gains on securities available-for-sale included in net income			8
Reclassification adjustment for realized gains on securities held-to-maturity included in net income			4
Tax Effect Allocated to Each Component of Other Comprehensive Income (Loss)			$ (74)

[1] The accretion of the unrealized holding losses in accumulated other comprehensive income at the date of transfer partially offsets the amortization of the difference between the par value and the fair value of the investment securities at the date of transfer, and is an adjustment of yield.

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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Common Stock	Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury Stock	Unearned ESOP Shares	Total
Balance at Dec. 31, 2015		$ 179	$ 7,239	$ 14,985	$ (212)	$ (46)	$ (385)	$ 21,760
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				938				938
Other comprehensive income (loss), net					127			127
ESOP shares committed to be released			9				35	44
Proceeds of common stock offering and conversion of existing shares, net of expenses		(159)	9,149					8,990
Cancel 5,528 treasury shares		(1)	(45)			$ 46
Balance at Dec. 31, 2016		19	16,352	15,923	(85)		(350)	31,859
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				290				290
Other comprehensive income (loss), net					(53)			(53)
Reclassification of effect of tax rate change on other comprehensive income	[1]			27	(27)
ESOP shares committed to be released			18				34	52
Stock based compensation		1	132					133
Effect of stock repurchase plan		(1)	(1,061)					(1,062)
Balance at Dec. 31, 2017		$ 19	$ 15,441	$ 16,240	$ (165)		$ (316)	$ 31,219

[1] Reclassification adjustment from accumulated other comprehensive loss to retained earnings for stranded tax effects resulting from the newly enacted Federal corporate income tax rate of 21% in accordance with the early adoption of ASU 2018-02.

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Consolidated Statements of Stockholders' Equity (Parenthetical) - shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Statement Of Stockholders Equity [Abstract]
Number of treasury shares canceled (in shares)		5,528
Corporate federal income tax rate	21.00%

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash Flows from Operating Activities
Net income	$ 290	$ 938
Adjustments to reconcile net income to net cash flows from operating activities:
Net amortization of premiums and accretion of discounts on investments	136	327
Net gain on sales of securities		(36)
Gain on sale of loans	(2,146)	(2,252)
Proceeds from loans sold	72,249	76,220
Loans originated for sale	(70,814)	(72,147)
Amortization of net deferred loan origination costs	353	249
Depreciation and amortization	473	444
Provision for loan losses	271	180
Expense related to ESOP	52	44
Deferred income tax expense (benefit)	160	(116)
Earnings on investment in bank owned life insurance	(62)	(67)
(Increase) decrease in accrued interest receivable	(172)	3
Increase in other assets	(461)	(900)
(Decrease) increase in other liabilities	(585)	675
Net Cash Flows From Operating Activities	(256)	3,562
Cash Flows from Investing Activities
Purchases of securities available-for-sale	(7,533)	(12,579)
Proceeds from maturities and calls of securities available-for-sale	3,500	11,285
Proceeds from sales of securities available-for-sale		2,213
Proceeds from principal paydowns on securities available-for-sale	3,284	1,106
Purchases of securities held-to-maturity	(547)	(2,204)
Proceeds from maturities and calls of securities held-to-maturity	1,250	7,334
Proceeds from sales of securities held-to-maturity		393
Proceeds from principal paydowns on securities held-to-maturity	108	26
Net increase in loans	(37,143)	(24,791)
Purchase of restricted stock, net	(384)	(498)
Purchase of premises and equipment	(362)	(875)
Net Cash Flows From Investing Activities	(37,827)	(18,590)
Cash Flows from Financing Activities
Net increase (decrease) in deposits	33,757	(2,627)
Proceeds from long-term borrowings	16,501	19,000
Repayments on long-term borrowings	(15,867)	(14,279)
Net increase in short-term borrowings	7,000	6,000
Net proceeds from stock conversion and offering		8,990
Stock based compensation	133
Effect of stock repurchase plan	(1,062)
Net increase (decrease) in official bank checks	611	(796)
Net Cash Flows From Financing Activities	41,073	16,288
Change in Cash and Cash Equivalents	2,990	1,260
Cash and Cash Equivalents - Beginning	7,407	6,147
Cash and Cash Equivalents - Ending	10,397	7,407
Supplementary Cash Flows Information
Interest paid	2,755	2,145
Taxes paid	$ 361	$ 306

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Nature of Operations and Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Nature of Operations and Summary of Significant Accounting Policies

Note 1 - Nature of Operations and Summary of Significant Accounting Policies

Organization and Nature of Operations

On March 2, 2016, the Boards of Directors of the FSB Community Bankshares, Inc. (“FSB Community”), FSB Community Bankshares, MHC (the “MHC”), and Fairport Savings Bank (the “Bank”) unanimously adopted a Plan of Conversion of FSB Community Bankshares, MHC pursuant to which the MHC undertook a “second-step” conversion and now no longer exists. The Bank reorganized from a two-tier mutual holding company structure to a fully public stock holding company structure effective July 13, 2016, and, as a result is now the wholly-owned subsidiary of FSB Bancorp, Inc. (the “Company”).

FSB Bancorp, Inc., the new stock holding company for the Bank, sold 1,034,649 shares of common stock at $10.00 per share, for gross offering proceeds of $10.3 million in its stock offering. Additionally, after accounting for conversion related expenses of $1.4 million, which offset gross proceeds, the Company received $8.9 million in net proceeds.

Concurrent with the completion of the conversion and reorganization, shares of common stock of FSB Community owned by public stockholders were exchanged for shares of the Company’s common stock so that the former public stockholders of FSB Community owned approximately the same percentage of the Company’s common stock as they owned of FSB Community’s common stock immediately prior to the conversion. Stockholders of FSB Community received 1.0884 shares of the Company’s common stock for each share of FSB Community’s stock they owned immediately prior to completion of the transaction. Cash in lieu of fractional shares was paid based on the offering price of $10.00 per share. As a result of the offering and the exchange of shares, the Company had 1,941,688 shares outstanding as of December 31, 2016.

In accordance with Board of Governors of the Federal Reserve System regulations, at the time of the reorganization, the Company substantially restricted retained earnings by establishing a liquidation account. The liquidation account will be maintained for the benefit of eligible account holders who continue to maintain their accounts at the Bank after conversion. The Bank has established a parallel liquidation account to support the Company’s liquidation account in the event the Company does not have sufficient assets to fund its obligations under its liquidation account. The liquidation accounts will be reduced annually to the extent that eligible account holders have reduced their qualifying deposits. Subsequent increases will not restore an eligible account holder’s interest in the liquidation accounts. In the event of a complete liquidation of the Bank or the Company, each account holder will be entitled to receive a distribution in an amount proportionate to the adjusted qualifying account balances then held. The Bank may not pay dividends if those dividends would reduce equity capital below the required liquidation account amount.

The Company provides a variety of financial services to individuals and corporate customers through its wholly-owned subsidiary, Fairport Savings Bank. The Bank’s operations are conducted in five branches located in Monroe County, New York. The Company and the Bank are subject to the regulations of certain regulatory authorities and undergo periodic examinations by those regulatory authorities.

The Company’s principal business consists of originating one-to-four-family residential real estate mortgages, home equity loans and lines of credit and to a lesser extent, originations of commercial real estate, multi-family, construction, commercial and industrial, and other consumer loans. The Company has five mortgage origination offices located in Pittsford, New York, Watertown, New York, Greece, New York, Lewiston, New York, and Buffalo, New York.

The Bank also provides non-deposit investment services to its customers through its wholly-owned subsidiary, Fairport Wealth Management. Previous to January 15, 2016, Fairport Wealth Management was known as Oakleaf Services Corporation. The results of operations of Fairport Wealth Management are not material to the consolidated financial statements.

Basis of Consolidation

The consolidated financial statements include the accounts of the Company, the Bank and Fairport Wealth Management. All significant intercompany accounts and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes in the near term relate to the determination of the allowance for loan losses, deferred tax assets, and the estimation of fair values for accounting and disclosure purposes.

The Company is subject to the regulations of various governmental agencies. The Company also undergoes periodic examinations by the regulatory agencies which may subject it to further changes with respect to asset valuations, amounts of required loss allowances, and operating restrictions resulting from the regulators’ judgements based on information available to them at the time of their examinations.

Significant Group Concentrations of Credit Risk

Most of the Company’s activities are with customers located within Monroe, Livingston, Ontario, Orleans, Wayne, Jefferson, Niagara, and Erie Counties, New York. Note 2 discusses the types of securities that the Company invests in. The concentration of credit by type of loan is set forth in Note 3. Although the Bank has a diversified loan portfolio, its debtors’ ability to honor their contracts is primarily dependent upon the real estate and general economic conditions in those areas.

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash, balances due from banks and interest-earning demand deposits (with an original maturity of three months or less).

Securities

The Company classifies investment securities as either available-for-sale or held-to-maturity. The Company does not hold any securities considered to be trading. Available-for-sale securities are reported at fair value, with net unrealized gains and losses reflected as a separate component of stockholders’ equity, net of the applicable income tax effect. Held-to-maturity securities are those that the Company has the ability and intent to hold until maturity and are reported at amortized cost.

Gains or losses on investment security transactions are based on the amortized cost of the specific securities sold. Premiums and discounts on securities are amortized and accreted into income using the interest method over the period to maturity.

When the fair value of a held-to-maturity or available-for-sale security is less than its amortized cost basis, an assessment is made at the balance sheet date as to whether other-than-temporary impairment (“OTTI”) is present.

The Company considers numerous factors when determining whether potential OTTI exists and the period over which the debt security is expected to recover. The principal factors considered are (1) the length of time and the extent to which the fair value has been less than amortized cost basis, (2) the financial condition of the issuer (and guarantor, if any) and adverse conditions specifically related to the security industry or geographic area, (3) failure of the issuer of the security to make scheduled interest or principal payments, (4) any changes to the rating of a security by a rating agency, and (5) the presence of credit enhancements, if any, including the guarantee of the federal government or any of its agencies.

For debt securities, OTTI is considered to have occurred if (1) the Company intends to sell the security, (2) it is more likely than not the Company will be required to sell the security before recovery of its amortized cost basis, or (3) if the present value of expected cash flows is not sufficient to recover the entire amortized cost basis or carrying value.

For debt securities, credit-related OTTI is recognized in earnings while noncredit-related OTTI on securities not expected to be sold is recognized in other comprehensive income (loss). Credit-related OTTI is measured as the difference between the present value of an impaired security’s expected cash flows and its amortized cost basis or carrying value. Noncredit-related OTTI is measured as the difference between the fair value of the security and its amortized cost, or carrying value, less any credit-related losses recognized. For securities classified as held-to-maturity, the amount of OTTI recognized in other comprehensive income (loss) is accreted to the credit-adjusted expected cash flow amounts of the securities over future periods.

Investment securities are exposed to various risks such as interest rate, market and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect the amounts reported in the accompanying financial statements.

Restricted Stock

Restricted equity securities are held as a long-term investment and value is determined based on the ultimate recoverability of the par value.  Impairment of these investments is evaluated quarterly and is a matter of judgment that reflects management’s view of the issuer’s long-term performance, which includes factors such as the following: its operating performance; the severity and duration of declines in the fair value of its net assets related to its capital stock amount; its commitment to make payments required by law or regulation and the level of such payments in relation to its operating performance; and its liquidity and funding position. After evaluating these considerations, the Company concluded that the par value of these investments will be recovered and, as such, has not recognized any impairment on its holdings of restricted equity securities during the current year.

The Company holds restricted stock from Federal Home Loan Bank and Atlantic Community Bankers Bank.

No impairment charges were recorded related to the restricted stock during 2017 or 2016.

Loans Held for Sale

Mortgage loans held for sale in the secondary market are carried at the lower of cost or fair value. Separate determinations of fair value for residential and commercial loans are made on an aggregate basis. Fair value is determined based solely on the effect of changes in secondary market interest rates and yield requirements from the commitment date to the date of the consolidated financial statements. Realized gains and losses on sales are computed using the specific identification method.

Loan Servicing Rights

The Company retains the servicing on most conventional fixed-rate mortgage loans sold and receives a fee based on the principal balance outstanding.

Loans serviced for others totaled $132,427,000 and $118,565,000 at December 31, 2017 and 2016, respectively.

The Company also sells correspondent FHA and VA mortgage loans, servicing released.

Loan servicing rights are recorded at fair value when loans are sold with servicing rights retained. The fair value of the mortgage servicing rights (“MSRs”) is determined using a method which utilizes servicing income, discount rates, and prepayment speeds relative to the Bank’s portfolio for MSRs and are amortized over the life of the loan. MSRs amounted to $892,000 and $804,000 at December 31, 2017 and 2016, respectively, and are included in other assets on the consolidated balance sheets. In 2017, $131,000 was capitalized and $43,000 was amortized. In 2016, $268,000 was capitalized with $25,000 amortized.

Loans

Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off generally are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, and net deferred origination fees and costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method over the estimated life of the loan.

The accrual of interest is generally discontinued when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about further collectability of principal or interest, even though the loan is currently performing. A loan may remain on accrual status if it is in the process of collection and is well secured. When a loan is placed on nonaccrual status, unpaid interest credited to income in the current year is reversed. Interest received on nonaccrual loans generally is either applied against principal or reported as interest income, according to management’s judgment as to the collectability of principal. Generally, loans are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time and the ultimate collectability of the total contractual principal and interest is no longer in doubt.

Allowance for Loan Losses

The allowance for loan losses (the “Allowance”) is established as losses are estimated to have occurred in the loan portfolio. The allowance for loan losses is recorded through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the loan is uncollectable. Subsequent recoveries, if any, are credited to the allowance.

The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.

The allowance consists of specific, general and unallocated components. The specific component relates to loans that are deemed impaired and classified as either special mention, substandard, doubtful, or loss. For such loans that are also classified as impaired, an allowance is generally established when the collateral value of the impaired loan is lower than the carrying value of that loan. The general component covers non-classified loans and is based on historical loss experience adjusted for the following qualitative factors: effects of changes in lending policies; national and/or local economic trends and conditions; trends in volume and terms of loans; experience, ability, and depth of management; levels and trends of delinquencies, non-accruals and classified loans; quality of institutions loan review system; collateral value for collateral dependent loans; concentrations of credit; and competition, legal and regulatory requirements on level of estimated credit losses. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.

A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent.

Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, the Company does not separately identify individual consumer and residential loans for impairment disclosures unless subject to a troubled debt restructuring.

In addition, Federal regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses and may require the Company to recognize additions to the allowance based on their judgements about information available to them at the time of their examination, which may not be currently available to management. Based on management’s comprehensive analysis of the loan portfolio, management believes the current level of the allowance for loan losses is adequate.

Bank Owned Life Insurance

The Company holds life insurance policies on a key executive. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement.

Premises and Equipment

Premises and equipment are stated at cost. Depreciation and amortization are computed on the straight-line basis over the shorter of the estimated useful lives or lease terms (in the case of leasehold improvements) of the related assets. Estimated useful lives are generally 20 to 30 years for premises and 3 to 10 years for furniture and equipment.

Foreclosed Real Estate

Real estate properties acquired through, or in lieu of, loan foreclosure are initially recorded at fair value less estimated selling costs at the date of foreclosure. Any write-downs based on the asset’s fair value at date of acquisition are charged to the allowance for loan losses. After foreclosure, property held for sale is carried at the lower of the new basis or fair value less any costs to sell. Costs of significant property improvements are capitalized, whereas costs relating to holding property are expensed. Valuations are periodically performed by management, and any subsequent write-downs are recorded as a charge to earnings, if necessary, to reduce the carrying value of the property to the lower of its cost or fair value less cost to sell. The Company had no foreclosed real estate at December 31, 2017 and 2016. At December 31, 2017 the Company had one residential mortgage loan for $37,000 in the process of foreclosure and at December 31, 2016 the Company had no residential real estate loans in the process of foreclosure. 

Income Taxes

Income taxes are provided for the tax effects of certain transactions reported in the consolidated financial statements. Income taxes consist of taxes currently due plus deferred taxes related primarily to temporary differences between the financial reporting and income tax basis of the allowance for loan losses, premises and equipment, certain state tax credits, and deferred loan origination costs. The deferred tax assets and liabilities represent the future tax return consequences of the temporary differences, which will either be taxable or deductible when the assets and liabilities are recovered or settled. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized. Deferred tax assets and liabilities are reflected at income tax rates applicable to the period in which the deferred tax assets and liabilities are expected to be realized or settled. On December 22, 2017, the Tax Cuts and Jobs Act (the “Tax Act”) was enacted which reduced the corporate federal income tax rate from 34% to 21% and caused a reevaluation of net deferred tax assets. Generally accepted accounting principles requires that the impact of the provisions of the Tax Act be accounted for in the period of enactment. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.

Advertising Costs

The Company follows the policy of charging the costs of advertising to expense as incurred.

Off-Balance Sheet Financial Instruments

In the ordinary course of business, the Company has entered into off-balance sheet financial instruments consisting of commitments to extend credit. Such financial instruments are recorded in the consolidated balance sheets when they are funded.

Transfers of Financial Assets

Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.

Comprehensive Income (Loss)

Accounting principles generally require that recognized revenue, expenses, gains, and losses be included in earnings. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities, are reported as a separate component of the stockholders’ equity section of the consolidated balance sheets, such items, along with net income, are components of comprehensive income (loss).

Accumulated other comprehensive gain (loss) represents the sum of these items, with the exception of net income, as of the balance sheet date and is represented in the table below.

	As of December 31,
	2017			2016
Accumulated Other Comprehensive Loss By Component:
Unrealized losses on securities available-for-sale	$	(208	)	$	(128	)
Tax effect		43			43
Net unrealized losses on securities available-for-sale		(165	)		(85	)
Accumulated other comprehensive loss	$	(165	)	$	(85	)

Earnings Per Common Share

Basic earnings per common share is calculated by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during the period. Diluted earnings per share is computed in a similar manner to that of basic earnings per share except that the weighted-average number of common shares outstanding is increased to include the number of incremental common shares that would have been outstanding if all potentially dilutive common shares (such as stock options) issued became vested during the period. Net income available to common stockholders is net income of the Company. The Company announced on July 27, 2017 that the Board of Directors had adopted its first stock repurchase program. Under the repurchase program, the Company may repurchase up to 97,084 shares of its common stock, or approximately 5% of its then outstanding shares. As of December 31, 2017, the Company had repurchased 69,535 shares at an average price of $15.30 per share. On September 27, 2017, the Board of Directors of the Company approved restricted stock and stock option grants to senior management and the directors of the Company, pursuant to the terms of the 2017 Equity Incentive Plan (the “Plan”). The Plan was approved previously by the Company’s stockholders on August 29, 2017. An aggregate of 152,080 stock options and 62,700 shares of restricted stock were granted. The grants to senior management and directors vest over a five year period in equal annual installments, with the first installment vesting on the first anniversary date of the grant and succeeding installments on each anniversary thereafter, through 2022. The Company did not grant any restricted stock awards or stock options for the year ended December 31, 2016.

Unallocated common shares held by the ESOP are not included in the weighted-average number of common shares outstanding for purposes of calculating basic earnings per common share until they are committed to be released. The average common shares outstanding were 1,899,473 and 1,899,552 for the years ended December 31, 2017 and December 31, 2016 respectively.

Treasury Stock

Treasury stock was recorded using the cost method and accordingly was presented as a reduction of stockholders’ equity. All treasury stock shares associated with our common stock have been cancelled as a result of the stock conversion and reorganization that occurred in July 2016.

Reclassifications

Amounts in the prior year’s consolidated financial statements have been reclassified whenever necessary to conform to the current year’s presentation. Such reclassifications had no impact on stockholders’ equity or net income as previously reported.

New Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued an Accounting Standard Update (“ASU”) (ASU 2014-09) to amend its guidance on “Revenue from Contracts with Customers (Topic 606). The objective of the ASU is to align the recognition of revenue with the transfer of promised goods or services provided to customers in an amount that reflects the consideration which the entity expects to be entitled in exchange for those goods or services. This ASU will replace most existing revenue recognition guidance under GAAP when it becomes effective. In August 2015, the FASB issued an amendment (ASU 2015-14) which defers the effective date of this new guidance by one year. More detailed implementation guidance on Topic 606 was issued in March 2016 (ASU 2016-08), April 2016 (ASU 2016-10), May 2016 (ASU 2016-12), December 2016 (ASU 2016-20), February 2017 (ASU 2017-05), and September 2017 (ASU-2017-13) and the effective date and transition requirements for these ASUs are the same as the effective date and transition requirements of ASU 2014-09. The amendments in ASU 2014-09 are effective for public business entities for annual periods, beginning after December 15, 2017. The Company expects to adopt the revenue recognition guidance beginning January 1, 2018. A significant amount of the Company’s revenues are derived from net interest income on financial assets and liabilities, which are excluded from the scope of the amended guidance.  With respect to noninterest income, the Company has identified revenue streams within the scope of the guidance and is in the final stages of its accounting analysis of the underlying contracts. The Company does not presently expect that changes in the timing of revenue recognition will be material to the amount of annual revenue recognized by the Company.  

In August 2014, the FASB issued an amendment (ASU 2014-14) to its guidance on “Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40)”. The objective of the ASU is to reduce the diversity in how creditors classify government-guaranteed mortgage loans, including FHA or VA guaranteed loans, upon foreclosure, to provide more decision-useful information about a creditor’s foreclosed mortgage loans that are expected to be recovered, at least in part, through government guarantees. The amendments in this Update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Public entities would be permitted to elect to early adopt for annual reporting periods beginning after December 15, 2016. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations or financial position.

In January 2016, the FASB issued an Update (ASU 2016-01) to its guidance on “Financial Instruments (Subtopic 825-10)”. This amendment addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. These amendments require equity securities to be measured at fair value with changes in the fair value to be recognized through net income. The amendments also simplify the impairment assessment of equity investments without readily determinable fair values by requiring assessment for impairment qualitatively at each reporting period. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption of the amendments in this Update is not permitted. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations or financial position.

In February 2016, the FASB issued an Update (ASU 2016-02) to its guidance on “Leases (Topic 842)”. The new leases standard applies a right-of-use (ROU) model that requires a lessee to record, for all leases with a lease term of more than 12 months, an asset representing its right to use the underlying asset and a liability to make lease payments. For leases with a term of 12 months or less, a practical expedient is available whereby a lessee may elect, by class of underlying asset, not to recognize an ROU asset or lease liability. The new leases standard requires a lessor to classify leases as either sales-type, direct financing or operating, similar to existing U.S. GAAP. Classification depends on the same five criteria used by lessees plus certain additional factors.

The subsequent accounting treatment for all three lease types is substantially equivalent to existing U.S. GAAP for sales-type leases, direct financing leases, and operating leases. However, the new standard updates certain aspects of the lessor accounting model to align it with the new lessee accounting model, as well as with the new revenue standard under Topic 606. Lessees and lessors are required to provide certain qualitative and quantitative disclosures to enable users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The amendments are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The adoption of this ASU will result in a gross up of the Consolidated Statements of Financial Condition for right-of-use assets and associated lease liabilities for operating leases in which the Company is the lessee. The Company is evaluating the significance and other effects of adoption on the consolidated financial statements and related disclosures. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations. Branch building leases have been reviewed and are considered immaterial to the financial statements; there are no equipment leases to consider.

In March 2016, the FASB issued an Update (ASU 2016-09) to its guidance on “Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting”. This amendment is intended to simplify the accounting for stock compensation. The areas for simplification in this Update involve several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. For public business entities, the amendments in this Update are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The adoption of this guidance did not have a material impact on our consolidated results of operations or financial position.

In June 2016, the FASB issued an Update (ASU 2016-13) to its guidance on “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”. ASU 2016-13 requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model (referred to as the current expected credit loss (CECL) model). Under this model, entities will estimate credit losses over the entire contractual term of the instrument (considering estimated prepayments, but not expected extensions or modifications unless reasonable expectation of a troubled debt restructuring exists) from the date of initial recognition of that instrument. The ASU also replaces the current accounting model for purchased credit impaired loans and debt securities. The allowance for credit losses for purchased financial assets with a more-than insignificant amount of credit deterioration since origination (“PCD assets”), should be determined in a similar manner to other financial assets measured on an amortized cost basis. However, upon initial recognition, the allowance for credit losses is added to the purchase price (“gross up approach”) to determine the initial amortized cost basis. The subsequent accounting for PCD financial assets is the same expected loss model described above. Further, the ASU made certain targeted amendments to the existing impairment model for available-for-sale (AFS) debt securities. For an AFS debt security for which there is neither the intent nor a more-likely-than-not requirement to sell, an entity will record credit losses as an allowance rather than a write-down of the amortized cost basis. For public business entities that are U.S. Securities and Exchange Commission (SEC) filers, the amendments in this Update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. All entities may adopt the amendments in this Update earlier as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. An entity will apply the amendments in this Update through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach). The Company is currently evaluating the potential impact on our consolidated results of operations or financial position. The initial adjustment will not be reported in earnings and therefore will not have any material impact on our consolidated results of operations, but it is expected that it will have an impact on our consolidated financial position at the date of adoption of this Update. At this time, we have not calculated the estimated impact that this Update will have on our Allowance for Loan Losses, however, we anticipate it will have a significant impact on the methodology process we utilize to calculate the allowance. Alternative methodologies and software vendors are currently being considered. Data requirements and integrity are being reviewed and enhancements incorporated into standard processes. The Company is in the early stages of evaluation and implementation of the guidance.

In August 2016, the FASB issued an Update (ASU 2016-15) which clarifies how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The amendments are intended to reduce diversity in practice. The amendment covers the following cash flows: Cash payments for debt prepayment or extinguishment costs will be classified in financing activities. Upon settlement of zero-coupon bonds and bonds with insignificant cash coupons, the portion of the payment attributable to imputed interest will be classified as an operating activity, while the portion of the payment attributable to principal will be classified as a financing activity. Cash paid by an acquirer that isn’t soon after a business combination for the settlement of a contingent consideration liability will be separated between financing activities and operating activities. Cash payments up to the amount of the contingent consideration liability recognized at the acquisition date will be classified in financing activities; any excess will be classified in operating activities. Cash paid soon after the business combination will be classified in investing activities. Cash proceeds received from the settlement of insurance claims will be classified on the basis of the related insurance coverage (that is, the nature of the loss). Cash proceeds from lump-sum settlements will be classified based on the nature of each loss included in the settlement. Cash proceeds received from the settlement of corporate-owned life insurance (COLI) and bank-owned life insurance (BOLI) policies will be classified as cash inflows from investing activities. Cash payments for premiums on COLI and BOLI may be classified as cash outflows for investing, operating, or a combination of both. A transferor’s beneficial interest obtained in a securitization of financial assets will be disclosed as a noncash activity, and cash received from beneficial interests will be classified in investing activities. Distributions received from equity method investees will be classified using either a cumulative earnings approach or a look- through approach as an accounting policy election. The ASU contains additional guidance clarifying when an entity should separate cash receipts and cash payments and classify them into more than one class of cash flows (including when reasonable judgment is required to estimate and allocate cash flows) versus when an entity should classify the aggregate amount into one class of cash flows on the basis of predominance. The amendments are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The Company is currently evaluating the potential impact of adoption of this ASU on our consolidated results of operations or financial position.

In November 2016, the FASB issued an Update (ASU 2016-18) to its guidance on “Statement of Cash Flows (Topic 230) Restricted Cash” addresses diversity in practice from entities classifying and presenting transfers between cash and restricted cash as operating, investing or financing activities or as a combination of those activities in the statement of cash flows. The ASU requires entities to show the changes in the total cash, cash equivalents, restricted cash and restricted cash equivalents in the Statement of Cash Flows. As a result, transfers between such categories will no longer be presented in the Statement of Cash Flows. ASU 2016-18 is effective for the fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted provided all amendments are adopted in the same period. Management is evaluating the effect that this guidance will have on consolidated financial statements and disclosures.

In March 2017, the FASB issued an Update (ASU 2017-08) to its guidance on “Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20) related to premium amortization on purchased callable debt securities. The amendments in this Update shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. For public business entities, the amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity should apply the amendments in this Update on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Additionally, in the period of adoption, an entity should provide disclosure about a change in accounting principle. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations or financial position.

In May 2017, the FASB issued an Update (ASU 2017-09) to its guidance on “Compensation - Stock Compensation (Topic 718)” such that an entity must apply modification accounting to changes in the terms or conditions of a share-based payment award unless all of the following criteria are met: (1) The fair value of the modified award is the same as the fair value of the original award immediately before the modification. The standard indicates that if the modification does not affect any of the inputs to the valuation technique used to value the award, the entity is not required to estimate the value immediately before and after the modification. (2) The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the modification. (3) The classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the modification. The amendments are effective for all entities for fiscal years beginning after December 15, 2017, including interim periods within those years. Early adoption is permitted, including adoption in an interim period. The Company is currently evaluating the potential impact of adoption of this ASU on our consolidated results of operations or financial position.

In February 2018, the FASB issued an Update (ASU 2018-02) to its guidance on “Income Statement—Reporting Comprehensive Income (Topic 220).” The amendments in this Update allow a reclassification for the so-called stranded tax effects in accumulated other comprehensive income (loss) resulting from the reduction in the federal corporate income tax rate to 21% made by the Tax Cuts and Jobs Act (the “Tax Act”), which was signed into law by the President on December 22, 2017. ASU 2018-02 amends accounting standards to allow reclassification to retained earnings of the effects of remeasuring deferred tax liabilities and deferred tax assets relating to items remaining within accumulated other comprehensive income (loss) as a result of the Tax Act. The amount of the reclassification is the difference between the amount initially charged or credited directly to other comprehensive income (loss) at the previously enacted U.S. federal corporate income tax rate and the amount that would have been charged or credited directly to other comprehensive income (loss) by applying the newly enacted 21% rate, but excluding the effect of any valuation allowance previously charged to income from continuing operations. ASU 2018-02 is effective for all entities for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted, for public business entities for reporting periods for which financial statements have not yet been issued and should be applied retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate is recognized. The Company has elected to early adopt ASU 2018-02 and it is reflected in the accompanying financial statements.

Change in Accounting Estimate

Due to a change in New York State tax law, mortgage recording tax expensed during the years ended December 31, 2016 and 2015 are now a refundable tax credit, at the election of the tax payer.  Under New York law, a bank that paid special additional mortgage recording tax (“SAMRT”) on residential mortgages in any year beginning on or before January 1, 2015, may elect to treat the unused portion of the SAMRT credit on those mortgages as overpayment of tax to be carried forward or refunded.  Previously, any unused credit was only eligible to be carried forward to future years.  The Company made this election on December 20, 2016 and its impact in 2016 was as follows:

Income from continuing operations	$	627,000
Net income	$	464,000
Net income per share	$	0.24

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Securities

12 Months Ended

Dec. 31, 2017

Investments, Debt and Equity Securities [Abstract]

Securities

Note 2 - Securities

The amortized cost and estimated fair value of securities with gross unrealized gains and losses at December 31, 2017 and 2016 are as follows:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In Thousands)
December 31, 2017:
Available-for-Sale:
U.S. Government and agency obligations	$	10,612	$	-	$	(142	)	$	10,470
Mortgage-backed securities - residential		7,909		19		(85	)		7,843
	$	18,521	$	19	$	(227	)	$	18,313
Held-to-Maturity:
Mortgage-backed securities - residential	$	637	$	9	$	-		$	646
State and municipal securities		5,938		41		(37	)		5,942
	$	6,575	$	50	$	(37	)	$	6,588
December 31, 2016:
Available-for-Sale:
U.S. Government and agency obligations	$	8,106	$	3	$	(110	)	$	7,999
Mortgage-backed securities - residential		9,769		42		(63	)		9,748
	$	17,875	$	45	$	(173	)	$	17,747
Held-to-Maturity:
Mortgage-backed securities - residential	$	745	$	13	$	-		$	758
State and municipal securities		6,675		25		(74	)		6,626
	$	7,420	$	38	$	(74	)	$	7,384

Mortgage-backed securities consist of securities that are issued by Fannie Mae (“FNMA”), Freddie Mac (“FHLMC”), Ginnie Mae (“GNMA”), and are collateralized by residential mortgages. U.S. Government and agency obligations include notes and bonds with both fixed and variable rates. State and municipal securities consist of government obligation and revenue bonds. 

The amortized cost and estimated fair value by contractual maturity of debt securities at December 31, 2017 are shown below. Actual maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations.

	Available-for-Sale				Held-to-Maturity
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(In Thousands)
Due in one year or less	$	-	$	-	$	839	$	837
Due after one year through five years		8,607		8,489		3,302		3,294
Due after five years through ten years		1,005		1,001		1,797		1,811
Due after ten years		1,000		980		-		-
Mortgage-backed securities - residential		7,909		7,843		637		646
	$	18,521	$	18,313	$	6,575	$	6,588

There were no realized gains on sales of securities in 2017. There were $24,000 of gross realized gains on sales of securities available-for-sale and $12,000 of gross realized gains on sales of securities held-to-maturity in 2016 resulting from proceeds of $2,606,000. In accordance with accounting guidance, the Company was able to sell securities classified as held-to-maturity in 2016 after the Company had already collected a substantial portion (at least 85%) of the principal outstanding at acquisition due either to prepayments or to scheduled principal and interest payments on debt securities.

No securities were pledged to secure public deposits or for any other purpose required or permitted by law at December 31, 2017 and 2016.

Management has reviewed its loan and mortgage-backed securities portfolios and determined that, to the best of its knowledge, little or no exposure exists to sub-prime or other high-risk residential mortgages. The Company is not in the practice of investing in, or originating, these types of investments or loans.

The following table shows gross unrealized losses and fair value, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position, at December 31, 2017 and 2016:

	Less than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Thousands)
2017:
Available-for-Sale
U.S. Government and agency obligations	$	4,472	$	34	$	5,999	$	108	$	10,471	$	142
Mortgage-backed securities - residential		2,459		23		3,435		62		5,894		85
	$	6,931	$	57	$	9,434	$	170	$	16,365	$	227
2017:
Held-to-Maturity
Mortgage-backed securities – residential(1)	$	-	$	-	$	171	$	-	$	171	$	-
State and municipal Securities		1,574		16		1,331		21		2,905		37
	$	1,574	$	16	$	1,502	$	21	$	3,076	$	37
2016:
Available-for-Sale
U.S. Government and agency obligations	$	6,996	$	110	$	-	$	-	$	6,996	$	110
Mortgage-backed securities - residential		4,441		49		987		14		5,428		63
	$	11,437	$	159	$	987	$	14	$	12,424	$	173
2016:
Held-to-Maturity
Mortgage-backed securities – residential(1)	$	178	$	-	$	-	$	-	$	178	$	-
State and municipal  Securities(1)		4,275		74		45		-		4,320		74
	$	4,453	$	74	$	45	$	-	$	4,498	$	74

⁽¹⁾ Aggregate unrealized loss position of these securities is less than $500.

Management evaluates securities for other-than-temporary impairment at least on a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. In 2017 and 2016, the Company did not record an other-than-temporary impairment charge.

At December 31, 2017, four U.S. Government and agency obligations, four residential mortgage-backed securities and 10 state and municipal securities were in a continuous unrealized loss position for less than twelve months. At December 31, 2017, five U.S. Government and agency obligations, five residential mortgage-backed securities and five state and municipal securities were in a continuous unrealized loss position for more than twelve months. The debt securities and residential mortgage-backed securities were issued by U.S. Government sponsored agencies.

All are paying in accordance with their terms with no deferrals of interest or defaults. Because the decline in fair value is attributable to changes in interest rates, not credit quality, and because management does not intend to sell and will not be required to sell these securities prior to recovery or maturity, no declines are deemed to be other-than-temporary. The state and municipal securities are general obligation (G.O.) bonds backed by the full faith and credit of local municipalities. There has never been a default of a New York G.O. in the history of the state. Historical performance does not guarantee future performance, but it does indicate that the risk of loss on default of a G.O. municipal bond for the Company is relatively low. All are paying in accordance with their terms and with no deferrals of interest or defaults. Because the decline in fair value is attributable to changes in interest rates, not credit quality, and because management does not intend to sell and will not be required to sell these securities prior to recovery or maturity, no declines are deemed to be other-than-temporary.

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Loans and The Allowance for Loan Losses

12 Months Ended

Dec. 31, 2017

Loans and Leases Receivable Disclosure [Abstract]

Loans and The Allowance for Loan Losses

Note 3 – Loans and The Allowance for Loan Losses

Net loans at December 31, 2017 and 2016 consist of the following:

	2017			2016
	(In Thousands)
Real estate loans:
Secured by one- to four-family residences	$	206,894		$	188,573
Secured by multi-family residences		10,650			5,103
Construction		10,750			6,134
Commercial real estate		14,803			8,440
Home equity lines of credit		17,127			16,797
Commercial & industrial		3,679			1,947
Other loans		70			75
Total Loans		263,973			227,069
Net deferred loan origination (fees) costs		(1	)		113
Allowance for loan losses		(1,261	)		(990	)
Net Loans	$	262,711		$	226,192

To develop and document a systematic methodology for determining the allowance for loan losses, the Company has divided the loan portfolio into two portfolio segments, each with different risk characteristics but with similar methodologies for assessing risk. Each portfolio segment is broken down into loan classes where appropriate. Loan classes contain unique measurement attributes, risk characteristics, and methods for monitoring and assessing risk that are necessary to develop the allowance for loan losses. Unique characteristics such as borrower type, loan type, collateral type, and risk characteristics define each class.

The following table illustrates the portfolio segments and classes for the Company’s loan portfolio:

Portfolio Segment	Class
Real Estate Loans	Secured by one-to-four family residences
	Secured by multi-family residences
	Construction Commercial real estate Home equity lines of credit
Other Loans	Commercial & industrial
	Other loans

The Company’s primary lending activity is the origination of one- to four-family residential real estate mortgage loans. At December 31, 2017, $206.9 million, or 78.3%, of the total loan portfolio consisted of one- to four-family residential real estate mortgage loans compared to $188.6 million, or 83.0%, of the total loan portfolio at December 31, 2016.

The Company offers home equity lines of credit, which are primarily secured by a second mortgage on one- to four-family residences. At December 31, 2017, home equity lines of credit totaled $17.1 million, or 6.5%, of total loans receivable compared to $16.8 million, or 7.4%, of total loans receivable at December 31, 2016.

The underwriting standards for home equity lines of credit include a determination of the applicant’s credit history, an assessment of the applicant’s ability to meet existing obligations and payments on the proposed loan and the value of the collateral securing the loan. The combined loan-to-value ratio (first and second mortgage liens) for home equity lines of credit is generally limited to 90%. The Company originates home equity lines of credit without application fees or borrower-paid closing costs. Home equity lines of credit are offered with adjustable-rates of interest indexed to the prime rate, as reported in The Wall Street Journal.

Multi-family residential loans generally are secured by rental properties. Multi-family real estate loans are offered with fixed and adjustable interest rates. Loans secured by multi-family real estate totaled $10.7 million, or 4.0%, of the total loan portfolio at December 31, 2017 compared to $5.1 million, or 2.2%, of the total loan portfolio at December 31, 2016. Multi-family real estate loans are originated for terms of up to 20 years. Adjustable-rate multi-family real estate loans are tied to the average yield on U.S. Treasury securities, subject to periodic and lifetime limitations on interest rate changes.

Loans secured by multi-family real estate generally involve a greater degree of credit risk than one- to four-family residential mortgage loans and carry larger loan balances. This increased credit risk is a result of several factors, including the concentration of principal in a limited number of loans and borrowers, the effects of general economic conditions on income producing properties, and the increased difficulty of evaluating and monitoring these types of loans. Furthermore, the repayment of loans secured by multi-family real estate typically depends upon the successful operation of the real estate property securing the loans. If the cash flow from the project is reduced, the borrower’s ability to repay the loan may be impaired.

The Company originates construction loans for the purchase of developed lots and for the construction of single-family residences. At December 31, 2017, construction loans totaled $10.8 million, or 4.1%, of total loans receivable compared to $6.1 million, or 2.7%, at December 31, 2016. At December 31, 2017, the additional unadvanced portion of these construction loans totaled $5.9 million compared to $5.0 million at December 31, 2016. Construction loans are offered to individuals for the construction of their personal residences by a qualified builder (construction/permanent loans).

Before making a commitment to fund a construction loan, the Company requires an appraisal of the property by an independent licensed appraiser. The Company generally also reviews and inspects each property before disbursement of funds during the term of the construction loan.

Construction financing generally involves greater credit risk than long-term financing on improved, owner-occupied real estate. Risk of loss on a construction loan depends largely upon the accuracy of the initial estimate of the value of the property at completion of construction compared to the estimated cost (including interest) of construction and other assumptions. If the estimate of construction cost proves to be inaccurate, the Company may be required to advance additional funds beyond the amount originally committed in order to protect the value of the property. Moreover, if the estimated value of the completed project proves to be inaccurate, the borrower may hold a property with a value that is insufficient to assure full repayment of the loan.

Commercial real estate loans are secured by office buildings, mixed use properties, places of worship and other commercial properties. Loans secured by commercial real estate totaled $14.8 million, or 5.6%, of the Company’s total loan portfolio at December 31, 2017 compared to $8.4 million, or 3.7%, of our total loan portfolio at December 31, 2016.

The Company generally originates adjustable-rate commercial real estate loans with maximum terms of up to 15 years. The maximum loan-to-value ratio of commercial real estate loans is 80%.

Loans secured by commercial real estate generally are larger than one- to four-family residential loans and involve greater credit risk. Commercial real estate loans often involve large loan balances to single borrowers or groups of related borrowers. Repayment of these loans depends to a large degree on the results of operations and management of the properties securing the loans or the businesses conducted on such property, and may be affected to a greater extent by adverse conditions in the real estate market or the economy in general. Accordingly, the nature of these loans makes them more difficult for management to monitor and evaluate.

The commercial and industrial product set includes loans to individuals or businesses on an installment basis secured by vehicles, equipment or other durable goods for which the loans were made, loans for and secured by machinery and/or equipment for which a legitimate resale market exists, lines of credit to businesses and individuals, and unsecured loans to businesses and individuals on a short-term basis. At December 31, 2017, these loans totaled $3.7 million, or 1.4%, of the total loan portfolio compared to $1.9 million, or 0.9%, at December 31, 2016.

These loans carry a higher risk than commercial real estate loans by the nature of the underlying collateral, which can be business assets such as equipment and accounts receivable. To reduce the risk, management also attempts to secure secondary collateral, such as real estate, and obtain personal guarantees of the borrowers. To further reduce risk and enhance liquidity, these loans generally carry variable rates of interest, repricing in five year periods, and have a maturity of ten years or less.

In 2014, the Company applied and was approved as an SBA lender. SBA acts as a loan guarantor and these loans are generally for commercial business purposes versus real estate. The Company follows the Small Business Administration lending guidelines regarding eligibility, underwriting etc. as stated in SBA’s most current version of SOP 50 10 SBA’s Lender and Development Company Loan Program.

The Company offers a variety of other loans secured by property other than real estate. At December 31, 2017, these other loans totaled $70,000, or 0.1%, of the total loan portfolio compared to other loans totaling $75,000, or 0.1%, of the total loan portfolio at December 31, 2016. These loans include automobile, passbook, overdraft protection and unsecured loans. Due to the relative immateriality of other loans, the Company’s risk associated with these loans is not considered significant.

The following table sets forth the allowance for loan losses allocated by loan class and the activity in the allowance for loan losses for the years ending December 31, 2017 and 2016. The allowance for loan losses allocated to each class is not necessarily indicative of future losses in any particular class and does not restrict the use of the allowance to absorb losses in other classes.

	Secured by 1-4  family residential		Secured by multi- family residential			Construction		Commercial		Home  Equity  Lines of  Credit			Commercial  & Industrial		Other/  Unallocated			Total
	(In Thousands)
At December 31, 2017
Beginning Balance	$	584	$	38		$	31	$	84	$	112		$	28	$	113		$	990
Charge Offs		-		-			-		-		-			-		-			-
Recoveries		-		-			-		-		-			-		-			-
Provisions		232		42			23		64		(5	)		19		(104	)		271
Ending Balance (1)	$	816	$	80		$	54	$	148	$	107		$	47	$	9		$	1,261
At December 31, 2016
Beginning Balance	$	524	$	39		$	6	$	35	$	101		$	11	$	95		$	811
Charge Offs		-		-			-		-		-			-		(1	)		(1	)
Recoveries		-		-			-		-		-			-		-			-
Provisions		60		(1	)		25		49		11			17		19			180
Ending  Balance (1)	$	584	$	38		$	31	$	84	$	112		$	28	$	113		$	990

(1)All Loans are collectively evaluated for impairment.

The Company’s policies, consistent with regulatory guidelines, provide for the classification of loans that are considered to be of lesser quality as substandard, doubtful, or loss assets. An asset is considered substandard if it is inadequately protected by the current net worth and paying capacity of the obligor or of the collateral pledged, if any. Substandard assets include those assets characterized by the distinct possibility that the Company will sustain some loss if the deficiencies are not corrected. Assets classified as doubtful have all of the weaknesses inherent in those classified as substandard with the added characteristic that the weaknesses present make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable. Assets (or portions of assets) classified as loss are those considered uncollectible and of such little value that their continuance as assets is not warranted. Assets that do not expose the Company to risk sufficient to warrant classification in one of the aforementioned categories, but which possess potential weaknesses that deserve close attention, are required to be designated as special mention.

When the Company classifies assets as pass a portion of the related general loss allowances is allocated to such assets as deemed prudent. The allowance for loan losses is the amount estimated by management as necessary to absorb credit losses incurred in the loan portfolio that are both probable and reasonably estimable at the balance sheet date. The Company’s determination as to the classification of its assets and the amount of its loss allowances are subject to review by its principal state regulator, the New York State Department of Financial Services, which can require that the Company establish additional loss allowances. The Company regularly reviews its asset portfolio to determine whether any assets require classification in accordance with applicable regulations.

At December 31, 2017 and 2016, there were no loans considered to be impaired and no troubled debt restructurings.

The following table presents the risk category of loans by class at December 31, 2017 and 2016:

	Pass		Special  Mention		Substandard		Doubtful		Total
	(In Thousands)
2017
One- to four-family residential	$	203,815	$	116	$	2,963	$	-	$	206,894
Multi-family residential		10,650		-		-		-		10,650
Construction		10,750		-		-		-		10,750
Commercial real estate		14,803		-		-		-		14,803
Home equity lines of credit		16,897		-		230		-		17,127
Commercial & industrial		3,679		-		-		-		3,679
Other loans		70		-		-		-		70
Total	$	260,664	$	116	$	3,193	$	-	$	263,973
2016
One- to four-family residential	$	187,079	$	-	$	1,494	$	-	$	188,573
Multi-family residential		5,103		-		-		-		5,103
Construction		6,134		-		-		-		6,134
Commercial real estate		8,440		-		-		-		8,440
Home equity lines of credit		16,498		-		299		-		16,797
Commercial & industrial		1,900		-		47		-		1,947
Other loans		75		-		-		-		75
Total	$	225,229	$	-	$	1,840	$	-	$	227,069

At December 31, 2017, the Company had two non-accrual residential mortgage loans for $153,000 and no non-accrual loans at December 31, 2016. There were no loans that were past due 90 days or more and still accruing interest at December 31, 2017 and 2016. Interest on non-accrual loans that would have been earned if loans were accruing interest was immaterial for 2017.

Delinquent Loans. Loans are considered past due if the required principal and interest payments have not been received within thirty days of the payment due date. An age analysis of past due loans, segregated by portfolio segment and class of loans, as of December 31, 2017 and December 31, 2016, are detailed in the following table:

	30-59 Days Past Due		60-89 Days Past Due		Greater than 90 Days		Total Past Due		Current		Total Loans Receivable
	(In thousands)
2017
Real estate loans:
One- to four-family residential	$	699	$	-	$	153	$	852	$	206,042	$	206,894
Multi-family residential		-		-		-		-		10,650		10,650
Construction		-		-		-		-		10,750		10,750
Commercial		-		-		-		-		14,803		14,803
Home equity lines of credit		-		-		-		-		17,127		17,127
Commercial & industrial		-		-		-		-		3,679		3,679
Other loans		-		-		-		-		70		70
Total	$	699	$	-	$	153	$	852	$	263,121	$	263,973
2016
Real estate loans:
One- to four-family residential	$	89	$	-	$	-	$	89	$	188,484	$	188,573
Multi-family residential		-		-		-		-		5,103		5,103
Construction		-		-		-		-		6,134		6,134
Commercial		-		-		-		-		8,440		8,440
Home equity lines of credit		-		-		-		-		16,797		16,797
Commercial & industrial		47		-		-		47		1,900		1,947
Other loans		-		-		-		-		75		75
Total	$	136	$	-	$	-	$	136	$	226,933	$	227,069

Management has reviewed its loan portfolio and determined that, to the best of its knowledge, no exposure exists to sub-prime or other high-risk residential mortgages. The Company is not in the practice of originating these types of loans.

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Premises and Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Premises and Equipment

Note 4 - Premises and Equipment

Premises and equipment at December 31, 2017 and 2016 are summarized as follows:

	2017			2016
	(In Thousands)
Premises	$	4,946		$	4,355
Furniture and equipment		3,356			3,628
		8,302			7,983
Accumulated depreciation and amortization		(5,238	)		(4,808	)
	$	3,064		$	3,175

At December 31, 2017, the Company was obligated under non-cancelable operating leases for existing branches in Penfield, Irondequoit, Webster, and Perinton, New York and for five mortgage origination offices in Watertown, Pittsford, Greece, Lewiston, and Buffalo, New York. Rent expense under leases totaled $448,000 during 2017. Rent expense under the same non-cancelable operating leases, with the exception of the Lewiston mortgage origination office which was opened in November 2017, totaled $429,000 during 2016. Future minimum rental payments under these leases for the next five years and thereafter are as follows (in thousands):

Years ending December 31,
2018	$	449
2019		439
2020		390
2021		368
2022		307
Thereafter		1,626
Total	$	3,579

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Deposits

12 Months Ended

Dec. 31, 2017

Deposits [Abstract]

Deposits

Note 5 - Deposits

The components of deposits at December 31, 2017 and 2016 consist of the following:

	2017		2016
	(In Thousands)
Non-interest bearing	$	8,385	$	8,423
NOW accounts		31,807		29,725
Regular savings, tax escrow and demand clubs		25,413		26,655
Money market		37,772		30,123
Individual retirement accounts		7,069		6,975
Certificates of deposit		106,245		81,033
	$	216,691	$	182,934

As of December 31, 2017, individual retirement accounts and certificates of deposit have scheduled maturities as follows (in thousands):

2018	$	55,737
2019		31,514
2020		20,067
2021		4,136
2022		1,860
	$	113,314

The aggregate amount of time deposits, each with a minimum denomination of $250,000 was $13,342,000 and $7,746,000 at December 31, 2017 and 2016, respectively. Under the Dodd-Frank Act, deposit insurance per account owner is $250,000.

Interest expense on deposits for the years ended December 31, 2017 and 2016 is as follows:

	2017		2016
	(In Thousands)
NOW accounts	$	89	$	74
Regular savings and demand clubs		103		102
Money market		284		100
Individual retirement accounts		75		64
Certificates of deposit		1,260		1,096
	$	1,811	$	1,436

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Borrowings

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Borrowings

Note 6 - Borrowings

Borrowings consist of advances from the Federal Home Loan Bank of New York (FHLB).

The following table sets forth the contractual maturities of borrowings with the FHLB as of December 31:

Advance Date	Maturity Date	Current Rate			2017		2016
					(In Thousands)
04/25/12	04/25/17		1.03	%		-		128
08/16/12	08/16/17		1.00	%		-		306
09/05/12	09/05/19		1.13	%		539		829
11/06/12	11/06/17		0.86	%		-		407
11/27/12	11/27/17		1.12	%		-		1,000
12/19/12	12/19/19		1.20	%		613		902
12/27/12	12/27/17		0.89	%		-		220
01/04/13	01/04/19		1.52	%		1,000		1,000
01/15/13	01/16/18		1.18	%		1,000		1,000
01/22/13	01/23/17		0.96	%		-		1,000
01/22/13	01/22/18		1.20	%		1,000		1,000
01/22/13	01/22/19		1.44	%		1,000		1,000
02/20/13	02/21/20		1.28	%		331		475
02/20/13	02/21/23		1.77	%		547		646
07/02/13	07/02/18		1.35	%		274		682
07/22/13	07/23/18		1.27	%		275		681
09/19/13	09/19/18		1.37	%		171		375
01/21/14	01/22/18		1.72	%		1,000		1,000
01/21/14	01/22/19		1.45	%		240		442
03/20/14	03/20/19		1.50	%		411		714
03/24/14	03/24/17		1.32	%		-		1,500
07/21/14	07/21/21		1.94	%		541		682
07/21/14	07/22/19		2.08	%		500		500
07/21/14	07/23/18		1.79	%		1,000		1,000
08/06/14	08/06/18		1.80	%		1,000		1,000
08/21/14	08/21/19		2.12	%		1,000		1,000
10/02/14	10/04/21		2.00	%		1,153		1,434
10/15/14	10/15/21		1.69	%		574		715
11/28/14	11/29/21		1.90	%		1,175		1,455
12/31/14	12/31/19		1.63	%		427		626
12/31/14	01/02/18		1.52	%		1,000		1,000
01/14/15	01/14/20		1.73	%		1,500		1,500
01/21/15	01/21/20		1.79	%		500		500
01/21/15	01/21/21		1.97	%		500		500
04/13/15	04/13/20		1.74	%		1,000		1,000
05/20/15	05/20/20		1.52	%		509		708
05/20/15	05/20/22		1.91	%		658		796
06/25/15	06/25/20		1.65	%		527		725
06/25/15	06/26/17		1.14	%		-		1,000
10/29/15	10/29/20		1.51	%		1,185		1,579
10/29/15	10/29/20		1.90	%		1,000		1,000
01/27/16	01/27/21		1.92	%		1,000		1,000
01/27/16	01/27/23		1.87	%		751		888
02/12/16	02/13/23		1.66	%		761		898
02/12/16	02/13/23		2.04	%		500		500

Advance Date	Maturity Date	Current Rate			2017		2016
					(In Thousands)
08/24/16	08/24/17		1.01	%		-		1,000
08/24/16	08/24/18		1.22	%		1,000		1,000
09/21/16	03/21/17		0.83	%		-		1,000
09/21/16	09/21/17		1.06	%		-		2,000
09/30/16	03/30/17		0.79	%		-		1,000
10/28/16	10/28/20		1.57	%		1,000		1,000
11/04/16	11/04/21		1.72	%		2,000		2,000
11/17/16	11/17/21		2.13	%		1,000		1,000
11/17/16	11/17/21		1.78	%		807		1,000
11/17/16	11/17/23		2.07	%		866		1,000
11/28/16	11/29/19		1.78	%		1,500		1,500
12/08/16	12/08/17		1.22	%		-		1,000
12/21/16	06/21/17		0.95	%		-		1,000
12/21/16	12/23/19		1.91	%		1,000		1,000
12/30/16	01/03/17		0.74	%		-		3,000
01/04/17	01/04/19		1.62	%		1,500		-
01/19/17	01/21/20		1.91	%		1,000		-
03/24/17	03/24/22		2.00	%		1,309		-
03/24/17	03/25/24		2.28	%		1,367		-
07/24/17	07/24/20		1.88	%		1,000		-
07/24/17	07/26/21		2.03	%		1,000		-
07/24/17	07/25/22		1.94	%		936		-
08/31/17	08/31/18		1.55	%		1,000		-
08/31/17	08/31/21		1.96	%		1,000		-
09/11/17	09/11/20		1.80	%		1,000		-
09/11/17	09/12/22		2.07	%		1,500		-
09/27/17	09/27/18		1.66	%		1,500		-
09/27/17	09/27/22		2.28	%		1,000		-
10/04/17	04/04/18		1.50	%		1,500		-
11/27/17	05/29/18		1.76	%		3,500		-
12/04/17	03/05/18		1.59	%		1,500		-
12/08/17	04/09/18		1.64	%		1,000		-
12/11/17	01/11/18		1.55	%		1,500		-
12/11/17	03/12/18		1.61	%		1,500		-
12/29/17	01/02/18		1.53	%		2,500		-
					$	64,447	$	56,813

Borrowings are secured by residential mortgages with a carrying amount of $190,382,000 at December 31, 2017 and the Company’s investment in FHLB stock. As of December 31, 2017, $101,788,000 was available for borrowings. At December 31, 2016, the carrying amount of borrowings secured by residential mortgages was $165,546,000 and $90,868,000 was available for new borrowings. 

The following table sets forth the contractual maturities of all FHLB borrowings at December 31, 2017 (dollars in thousands):

	Contractual  Maturity		Weighted  Average Rate
2018	$	23,220		1.57	%
2019		9,730		1.66
2020		10,553		1.72
2021		10,750		1.90
2022		5,403		2.05
Thereafter		4,791		2.00
	$	64,447		1.73	%

The Company also has a repurchase agreement with Raymond James providing an additional $10 million in liquidity collateralized by the Company’s U.S. Government and agency obligations. There were no advances outstanding under the repurchase agreement at December 31, 2017 and 2016. Securities are not pledged until the borrowing is initiated. In addition to the repurchase agreement with Raymond James, the Company also has an unsecured line of credit through Atlantic Community Bankers Bank which would provide an additional $5 million in liquidity. There were no draws or outstanding balances from the line of credit at December 31, 2017 and 2016.

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Income Taxes

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Income Taxes

Note 7 - Income Taxes

The provision for income taxes for 2017 and 2016 consists of the following:

	2017		2016
	(In Thousands)
Current
Federal	$	279	$	439
State		4		4
Deferred		165		(115	)
	$	448	$	328

During 2017, the Tax Act was signed into law. The most significant impact of the Act is the reduction in the corporate federal income tax rate from a maximum rate of 35% to 21% beginning in 2018. As a result, the Company revalued its deferred tax assets and liabilities at its new effective tax rate and recorded a net adjustment of $228,000 to income tax expense to reduce the carrying value of the net deferred tax assets. The Company’s effective tax rate was 61% and 26% in 2017 and 2016, respectively. The effective tax rate primarily reflects the impact of non-tax interest and dividends from tax exempt securities, as well as a partial release of a component of the deferred tax asset valuation allowance during 2016, and a reduction in tax rates, as part of the Act.

Items that give rise to differences between income tax expense included in the consolidated statements of income and taxes computed by applying the statutory federal tax at a rate of 34% in 2017 or 2016 included the following (dollars in thousands):

	2017						2016
	Amount			% of Pre-tax  Income			Amount			% of Pre-tax  Income
Federal Tax at a Statutory rate	$	252			34	%	$	431			34	%
State taxes, net of Federal provision		(108	)		(15	)		119			9
Change in tax rate		228			31			-			-
Change in valuation allowance		106			14			(178	)		(14	)
Nontaxable interest and dividend income		(42	)		(6	)		(44	)		(3	)
Other items		12			3			-			-
Income tax provision	$	448			61	%	$	328			26	%

Deferred income tax assets and liabilities resulting from temporary differences are summarized as follows and are included in other assets at December 31, 2017 and at December 31, 2016 in the accompanying consolidated balance sheets:

	2017			2016
	(In Thousands)
Deferred tax assets:
Deferred loan origination fees	$	92		$	95
Allowance for loan losses - Federal		330			379
State tax credits		1,075			1,102
Depreciation		-			64
Supplemental Executive Retirement Plan		208			290
Unrealized loss on securities available for sale and transferred to  held to maturity		44			43
Net operating loss		270			159
Stock compensation		14			-
Other		1			-
		2,034			2,132
Valuation allowance		(1,424	)		(1,318	)
Total deferred tax assets, net of valuation allowance		610			814
Deferred tax liabilities:
Depreciation		(9	)		-
Mortgage servicing rights		(233	)		(308	)
Total deferred tax liabilities		(242	)		(308	)
Net deferred tax asset	$	368		$	506

The Company has recorded a valuation allowance for mortgage recording tax credits incurred before 2015 as well as state tax deductions since anticipated levels of future state taxable income makes it more likely than not that all of these tax benefits will not be used. Beginning in 2015, the New York State Special Additional Mortgage Recording Tax Credit became a refundable credit. To the extent that the credit exceeds the Company’s New York State tax liability, any remaining credit will be refunded to the Company. In addition, a valuation allowance in the amount of $88,000 was established in 2010 against a portion of the allowance for loan loss because future realization of the full tax benefit of that deferred tax asset was deemed to be unlikely. After fully utilizing its Federal Net Operating Loss (“NOL”) carryforward during 2013 and realizing increased and consistent current taxable income over the past 3 years, management determined that half (or $44,000) of that component of the valuation allowance should be reversed during 2015, with the remaining reversed in 2016.

As a thrift institution, the Bank is subject to special provisions in the income tax laws regarding its allowable income tax bad debt deduction and related tax basis bad debt reserves. Deferred income tax liabilities are to be recognized with respect to any base-year reserves which are to become taxable (or "recaptured") in the foreseeable future.

Under current income tax laws, the base-year reserves would be subject to recapture if the Company pays a cash dividend in excess of earnings and profits or liquidates. The Bank does not expect to take any actions in the foreseeable future that would require the recapture of any Federal reserves. As a result, a deferred tax liability has not been recognized with respect to the Federal base-year reserve of $1,518,000 at December 31, 2017 and 2016, because the Bank does not expect that this amount will become taxable in the foreseeable future. The unrecognized deferred tax liability with respect to the Federal base-year reserve was $319,000 at December 31, 2017. It is more likely than not that this liability will never be incurred because, as noted above, the Bank does not expect to take any action in the future that would result in this liability being incurred.

The Company's Federal and New York State tax returns, constituting the returns of the major taxing jurisdictions, are subject to examination by the taxing authorities for 2014, 2015, and 2016 as prescribed by applicable statute. No waivers have been executed that would extend the period subject to examination beyond the period prescribed by statute.

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Accumulated Other Comprehensive Loss

12 Months Ended

Dec. 31, 2017

Comprehensive Income Loss Note [Abstract]

Accumulated Other Comprehensive Loss

Note 8 – Accumulated Other Comprehensive Loss

Changes in the components of accumulated other comprehensive loss (“AOCI”), net of tax, for the periods indicated are summarized in the table below, in thousands.

	For the year ended December 31, 2017
	Unrealized Gains and Losses on  Available for  Sales Securities			Total
Beginning balance	$	(85	)	$	(85	)
Other comprehensive (loss) income before reclassifications		(80	)		(80	)
Amounts reclassified from AOCI		-			-
Ending balance	$	(165	)	$	(165	)

	For the year ended December 31, 2016
	Unrealized Gains  and Losses on  Available for  Sales Securities			Unrealized Losses  on Securities  Transferred to  Held to Maturity			Total
Beginning balance	$	(4	)	$	(208	)	$	(212	)
Other comprehensive (loss) income before reclassifications		(57	)		208			151
Amounts reclassified from AOCI		(24	)		-			(24	)
Ending balance	$	(85	)	$	-		$	(85	)

The following table presents the amounts reclassified out of each component of AOCI for the indicated annual period in thousands:

For the year ended December 31,
Details about AOCI	2016			Affected Line Item in the Statement of Income
Available for sale securities	$	24		Realized gain on sale of securities
Held to maturity securities		12		Realized gain on sale of securities
		(12	)	Provision for Income Taxes
	$	24		Net Income

There were no amounts reclassified out of AOCI for the year ended December 31, 2017.

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Employee Benefit Plans

12 Months Ended

Dec. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

Note 9 - Employee Benefit Plans

The Bank has a 401(k) plan for all eligible employees. Employees are eligible for participation in the 401(k) Plan after one year of service and attaining age 21. The 401(k) Plan allows employees to contribute 1% to 100% of their annual salary subject to statutory limitations. Matching contributions made by the Bank are 100% of the first 6% of compensation that an employee contributes to the 401(k) Plan. In addition, the Bank may make a discretionary contribution as a percentage of each eligible employee’s annual base compensation including the value of ESOP shares allocated. Matching contributions to the 401(k) Plan amounted to $225,000 and $189,000 for the years ended December 31, 2017 and 2016, respectively. Discretionary contributions to the 401(k) Plan were $85,000 and $77,000 for the years ended December 31, 2017 and 2016, respectively.

The Bank sponsors an Employee Stock Ownership Plan (ESOP) for eligible employees who have attained age 21 and completed one year of employment. The cost of shares not committed to be released is presented in the accompanying consolidated balance sheets as a reduction of stockholders’ equity. Allocations to individual accounts are based on participant compensation. As shares are committed to be released to participants, the Company reports compensation expense equal to the current market price of the shares and the shares become outstanding for earnings per share computations. The difference between the market price and the cost of shares committed to be released is recorded as an adjustment to additional paid-in-capital. Any dividends on allocated shares reduce retained earnings. Any dividends on unallocated ESOP shares reduce debt and accrued interest. In connection with establishing the ESOP in 2007, the ESOP borrowed $700,000 from FSB Community to purchase 69,972 common shares of FSB Community’s stock. The loan is being repaid in twenty equal annual installments through 2026. The loan bears interest at the prime rate.

Shares are released to participants on a straight line basis as the loan is repaid and totaled 3,808 shares for each of the years ended December 31, 2017 and December 31, 2016. Total expense for the ESOP was $52,000 and $44,000 for the years ended December 31, 2017 and 2016, respectively. At December 31, 2017, the Company had 34,271 unearned ESOP shares having an aggregate market value of $582,607.

The Bank has a supplemental executive retirement plan (SERP) for two of its executives. All benefits provided under the SERP are unfunded and, as these executives retire, the Company will make payments to participants. The Company has recorded $797,000 and $759,000 at December 31, 2017 and 2016 respectively, for the SERP in other liabilities. In 2017 and 2016, the expense under the SERP totaled $38,000 and $138,000, respectively.

On September 27, 2017, the Board of Directors of the Company approved the grant of restricted stock awards to its Directors and executive officers under the 2017 Equity Incentive Plan that was approved at the special meeting of stockholders on August 29, 2017 when 77,668 shares were authorized for award. A total of 21,380 restricted stock awards were granted to the 11 external directors of the Company and a total of 41,320 restricted stock awards, in total, were granted to three executive officers. The awards will vest ratably over five years (20% per year for each year of the participant’s service with the Company).

The Bank also has a stock-based compensation plan which allows the Company to issue up to 194,168 stock options. On October 2, 2017 and October 30, 2017, the Board of Directors granted a combined total of 152,080 options to buy stock under the plan at exercise prices of $16.72 and $16.69, the fair value of the stock as of October 2^nd and October 30^th, respectively. These options have a 10-year term and are vested over a five year period. 

A summary of the Company’s stock option activity and related information for its option plans for the years ended December 31, 2017 and 2016 is as follows:

	2017				2016
	Options		Weighted Average  Exercise Price Per  Share		Options		Weighted Average  Exercise Price Per  Share
Outstanding at beginning of year		-	$	-		-	$	-
Grants		152,080		16.72		-		-
Exercised		-		-		-		-
Outstanding at year end		152,080	$	16.72		-	$	-
Exercisable at year end		-	$	-		-	$	-

The grants to senior management and directors vest over a five year period in equal annual installments, with the first installment vesting on the first anniversary date of the grant and succeeding installments on each anniversary thereafter, through 2022.

The compensation expense of the awards is based on the fair value of the instruments on the date of grant. The Company recorded compensation expense in the amount of $132,000 for the year ended December 31, 2017 and is expected to record $269,000 in 2018 through 2022.

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Related Party Transactions

12 Months Ended

Dec. 31, 2017

Related Party Transactions [Abstract]

Related Party Transactions

Note 10 - Related Party Transactions

Certain employees, executive officers and directors are engaged in transactions with the Bank in the ordinary course of business. It is the Bank’s policy that all related party transactions are conducted at “arms length” and all loans and commitments included in such transactions are made in the ordinary course of business, on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with persons not related to the Bank and do not involve more than the normal risk of collectability or present other unfavorable terms.

As of December 31, 2017 and 2016, loans outstanding with related parties were $560,000 and $596,000, respectively. During 2017, there were no new loans or sales and repayments totaled $36,000.

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Commitments

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Commitments

Note 11 - Commitments

The Bank is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance-sheet instruments. The Bank’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit is represented by the contractual amount of those instruments summarized as follows at December 31, 2017 and 2016:

	2017		2016
	(In Thousands)
Commitments to extend credit:
Commitments to grant loans	$	12,397	$	15,199
Unadvanced portion of construction loans		5,945		5,009
Unfunded commitments under lines of credit		17,523		17,587
	$	35,865	$	37,795

Commitments to grant loans at fixed-rates at December 31, 2017 totaled $10,836,000 and had interest rates that ranged from 3.25% to 5.25%.

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. 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 had two commercial letters of credit for $414,000 at December 31, 2017 and two commercial letters of credit for $110,000 at December 31, 2016.

The Bank evaluates each customer’s credit worthiness on a case-by-case basis. The amount and type of collateral obtained, if deemed necessary by the Bank upon extension of credit, varies and is based on management’s credit evaluation of the counterparty.

In the ordinary course of business, the Bank sells residential mortgage loans to third parties and in certain limited situations, such as in the event of an early payment default, the Bank retains credit risk exposure on those residential mortgage loans and may be required to repurchase them or to indemnify guarantors for certain losses. The Bank may also be required to repurchase residential mortgage loans when representations and warranties made by the Bank in connection with those sales are breached. When a residential mortgage loan sold to an investor fails to perform according to its contractual terms, the investor will typically review the loan file to search for errors that may have been made in the process of originating the loan. If errors were discovered and it is determined that such errors constitute a breach of a representation or warranty made to the investor in connection with the Bank’s sale of the residential mortgage loan, the Bank will be required to either repurchase the loan or indemnify the investor for losses sustained. The bank has not been required to repurchase any residential mortgage loans or indemnify any investors for any such errors.

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Regulatory Matters

12 Months Ended

Dec. 31, 2017

Banking and Thrift [Abstract]

Regulatory Matters

Note 12 - Regulatory Matters

The Bank is subject to various regulatory capital requirements. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Bank must meet specific guidelines that involve quantitative measures of the Bank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Bank’s capital amounts and classification are subject to qualitative judgments by the regulators about components, risk weightings, and other factors.

Quantitative measures established by regulation to ensure capital adequacy require the Bank to maintain minimum amounts and ratios (set forth in the table below) of total, Tier 1 capital (as defined), and Common Equity Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 to adjusted total assets (as defined). Management believes that, as of December 31, 2017 and 2016, the Bank met all capital adequacy requirements to which it was subject. As of December 31, 2017, the most recent notification categorized the Bank as well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized the Bank must maintain minimum total risk-based, Tier 1 risk-based, Common Equity Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the following table. There are no conditions or events since that notification that management believes have changed the Bank’s status as well capitalized.

The Bank’s actual capital amounts and ratios are presented in the table below.

Minimum

To Be "Well-

Minimum

Capitalized"

Well-Capitalized

For Capital

Under Prompt

With Buffer, Fully

Actual

Adequacy Purposes

Corrective Provisions

Phased in for 2019

(Dollars in thousands)

Amount

Ratio

Amount

Ratio

Amount

Ratio

Amount

Ratio

As of December 31, 2017

Total Core Capital (to Risk-Weighted Assets)

$

30,230

16.18

%

³$14,946

³8.0

%

³$18,683

³10.0

%

³$19,617

³10.5

%

Tier 1 Capital (to Risk-Weighted Assets)

28,969

15.51

³11,210

³6.0

³14,946

³8.0

³15,881

³8.5

Tier 1 Common Equity (to Risk-Weighted Assets)

28,969

15.51

³8,407

³4.5

³12,144

³6.5

³13,078

³7.0

Tier 1 Capital (to Assets)

28,969

9.51

³12,183

³4.0

³15,229

³5.0

³15,229

³5.0

As of December 31, 2016:

Total Core Capital (to Risk-Weighted Assets)

$

29,264

18.45

%

³$12,689

³8.0

%

³$15,861

³10.0

%

³$16,654

³10.5

%

Tier 1 Capital (to Risk-Weighted Assets)

28,274

17.83

³9,516

³6.0

³12,689

³8.0

³13,482

³8.5

Tier 1 Common Equity (to Risk-Weighted Assets)

28,274

17.83

³7,137

³4.5

³10,309

³6.5

³11,102

³7.0

Tier 1 Capital (to Assets)

28,274

10.70

³10,572

³4.0

³13,214

³5.0

³13,214

³5.0

The FRB has issued a policy guidance regarding the payment of dividends by bank holding companies.  In general, the FRB’s policies provide that dividends should be paid only out of current earnings and only if the prospective rate of earnings retention by the holding company appears consistent with the organization’s capital needs, asset quality and overall financial condition.  FRB guidance provides for prior regulatory review of capital distributions in certain circumstances such as where the company’s net income for the past four quarters, net of dividends previously paid over that period, is insufficient to fully fund the dividend or the company’s overall rate of earnings retention is inconsistent with the company’s capital needs and overall financial condition.  The ability of a holding company to pay dividends may be restricted if a subsidiary bank becomes undercapitalized.  These regulatory policies could affect the ability of FSB Bancorp to pay dividends or otherwise engage in capital distributions.

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Fair Value Measurement and Fair Values of Financial Instruments

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurement and Fair Values of Financial Instruments

Note 13 - Fair Value Measurement and Fair Values of Financial Instruments

Management uses its best judgment in estimating the fair value of the Company’s assets and liabilities; however, there are inherent weaknesses in any estimation technique. Therefore, for substantially all assets and liabilities, the fair value estimates herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction on the dates indicated. The estimated fair value amounts have been measured as of their respective year-ends and have not been re-evaluated or updated for purposes of these consolidated financial statements subsequent to those respective dates. As such, the estimated fair values of assets and liabilities subsequent to the respective reporting dates may be different than the amounts reported at each year-end.

Accounting guidance establishes a fair value hierarchy that prioritizes the inputs to valuation methods used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are as follows:

Level 1: Unadjusted quoted prices in active markets that are accessible at the measurement date for identical unrestricted assets or liabilities.

Level 2: Quoted prices in markets that are not active, or inputs that are observable either directly or indirectly, for substantially the full term of the asset or liability.

Level 3: Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (i.e. supported with little or no market activity).

An asset or liability’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.

For financial assets measured at fair value on a recurring basis, the fair value measurements by level within the fair value hierarchy used are as follows at December 31:

(In Thousands)
2017	Total		Level 1		Level 2		Level 3
U.S. Government and agency obligations	$	10,470	$	-	$	10,470	$	-
Mortgage-backed securities - residential		7,843		-		7,843		-
Total Available-for-Sale Securities	$	18,313	$	-	$	18,313	$	-

2016	Total		Level 1		Level 2		Level 3
U.S. Government and agency obligations	$	7,999	$	-	$	7,999	$	-
Mortgage-backed securities - residential		9,748		-		9,748		-
Total Available-for-Sale Securities	$	17,747	$	-	$	17,747	$	-

There were no securities transferred out of level 2 securities available-for-sale during the twelve months ended December 31, 2017. No assets or liabilities have been measured on a non-recurring basis at December 31, 2017 or 2016.

Required disclosures include fair value information about financial instruments, whether or not recognized in the consolidated balance sheets, for which it is practicable to estimate that value. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instrument. Certain financial instruments and all non-financial instruments are excluded from the disclosure requirements. Accordingly, the aggregate fair value amounts presented do not represent the underlying value of the Company.

Due to a wide range of valuation techniques and the degree of subjectivity used in making the estimates, comparisons between the Company’s disclosures and those of other companies may not be meaningful. The following methods and assumptions were used to estimate the fair values of certain of the Company’s assets and liabilities at December 31, 2017 and 2016.

Cash, Due from Banks, and Interest-Earning Demand Deposits

The carrying amounts of these assets approximate their fair values.

Investment Securities

The fair value of securities available-for-sale (carried at fair value) and held-to-maturity (carried at amortized cost) are determined by matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted market prices for the specific securities but rather relying on the securities’ relationship to other benchmark quoted prices and is considered to be a Level 2 measurement.

Investment in Restricted Stock

The carrying value of restricted stock, which consists of Federal Home Loan Bank and Atlantic Community Bankers Bank, approximates its fair value based on the redemption provisions of the restricted stock, resulting in a Level 2 classification.

Loans and Loans Held for Sale

The fair values of loans held in portfolio are estimated using discounted cash flow analyses, using market rates at the balance sheet date that reflect the credit and interest rate-risk inherent in the loans, resulting in a Level 3 classification. Projected future cash flows are calculated based upon contractual maturity or call dates, projected repayments and prepayments of principal. Generally, for variable rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values.

Mortgage loans held for sale in the secondary market are carried at the lower of cost or fair value, resulting in a Level 2 classification. Separate determinations of fair value for residential and commercial loans are made on an aggregate basis. Fair value is determined based solely on the effect of changes in secondary market interest rates and yield requirements from the commitment date to the date of the financial statements.

Accrued Interest Receivable and Payable

The carrying amount of accrued interest receivable and payable approximates fair value.

Deposits

The fair values disclosed for demand deposits (e.g., NOW accounts, non-interest checking, regular savings and certain types of money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts), resulting in a Level 1 classification. The carrying amounts for variable-rate certificates of deposit approximate their fair values at the reporting date, resulting in a Level 1 classification. Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies market interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits, resulting in a Level 2 classification.

Borrowings

The fair values of FHLB long-term borrowings are estimated using discounted cash flow analyses, based on the quoted rates for new FHLB advances with similar credit risk characteristics, terms and remaining maturity, resulting in a Level 2 classification.

The carrying amounts and estimated fair values of the Company’s financial instruments at December 31, 2017 and 2016 are as follows:

		2017				2016
	Fair Value Hierarchy	Carrying Amount		Fair Value		Carrying Amount		Fair Value
		(In Thousands)
Financial assets:
Cash and due from banks	1	$	1,672	$	1,672	$	1,634	$	1,634
Interest bearing demand deposits	1		8,725		8,725		5,773		5,773
Securities available for sale	2		18,313		18,313		17,747		17,747
Securities held to maturity	2		6,575		6,588		7,420		7,384
Investment in restricted stock	2		3,270		3,270		2,886		2,886
Loans held for sale	2		2,770		2,770		2,059		2,059
Loans, net	3		262,711		261,588		226,192		225,569
Accrued interest receivable	1		824		824		652		652
Financial liabilities:
Deposits	1/2		216,691		216,878		182,934		182,969
Borrowings	2		64,447		64,502		56,813		57,008
Accrued interest payable	1		94		94		71		71

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FSB Bancorp, Inc. (Parent Company Only) Financial Information

12 Months Ended

Dec. 31, 2017

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

FSB Bancorp, Inc. (Parent Company Only) Financial Information

Note 14 - FSB Bancorp, Inc. (Parent Company Only) Financial Information

Balance Sheets

	December 31
	2017		2016
	(In Thousands)
Assets
Cash and cash equivalents	$	1,717	$	2,881
Investment in banking subsidiary		29,171		28,610
ESOP loan receivable		365		398
Total Assets	$	31,253	$	31,889
Liabilities and Stockholders’ Equity
Total Liabilities	$	34	$	30
Stockholders’ Equity		31,219		31,859
Total Liabilities and Stockholders’ Equity	$	31,253	$	31,889

Statements of Income

	Year Ended December 31
	2017			2016
	(In Thousands)
Interest Income	$	29		$	20
Other Expense		(301	)		(89	)
Equity in undistributed earnings of banking subsidiary		562			1,007
Net Income	$	290		$	938

Statements of Cash Flows

	Year Ended December 31
	2017			2016
	(In Thousands)
Cash flows from operating activities
Net income	$	290		$	938
Adjustments to reconcile net income to net cash flows from operating activities
Equity in undistributed earnings of banking subsidiary		(562	)		(1,007	)
Stock based compensation		133			-
Decrease in accrued  interest receivable		-			8
Net increase in other liabilities		4			-
Net cash flows from operating activities		(135	)		(61	)
Cash flows from investing activities
Proceeds to banking subsidiary		-			(7,300	)
Proceeds from maturities and calls of securities available-for-sale		-			1,000
Payments received on ESOP loan		33			33
Net cash flows from investing activities		33			(6,267	)
Cash flows from financing activities
Proceeds from stock conversion and offering		-			8,944
Purchase of common stock		(1,062	)		-
Net cash flows from financing activities		(1,062	)		8,944
Net (decrease) increase in cash and cash equivalents		(1,164	)		2,616
Cash and cash equivalents - beginning		2,881			265
Cash and cash equivalents - ending	$	1,717		$	2,881

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Nature of Operations and Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Organization and Nature of Operations

Organization and Nature of Operations

On March 2, 2016, the Boards of Directors of the FSB Community Bankshares, Inc. (“FSB Community”), FSB Community Bankshares, MHC (the “MHC”), and Fairport Savings Bank (the “Bank”) unanimously adopted a Plan of Conversion of FSB Community Bankshares, MHC pursuant to which the MHC undertook a “second-step” conversion and now no longer exists. The Bank reorganized from a two-tier mutual holding company structure to a fully public stock holding company structure effective July 13, 2016, and, as a result is now the wholly-owned subsidiary of FSB Bancorp, Inc. (the “Company”).

FSB Bancorp, Inc., the new stock holding company for the Bank, sold 1,034,649 shares of common stock at $10.00 per share, for gross offering proceeds of $10.3 million in its stock offering. Additionally, after accounting for conversion related expenses of $1.4 million, which offset gross proceeds, the Company received $8.9 million in net proceeds.

Concurrent with the completion of the conversion and reorganization, shares of common stock of FSB Community owned by public stockholders were exchanged for shares of the Company’s common stock so that the former public stockholders of FSB Community owned approximately the same percentage of the Company’s common stock as they owned of FSB Community’s common stock immediately prior to the conversion. Stockholders of FSB Community received 1.0884 shares of the Company’s common stock for each share of FSB Community’s stock they owned immediately prior to completion of the transaction. Cash in lieu of fractional shares was paid based on the offering price of $10.00 per share. As a result of the offering and the exchange of shares, the Company had 1,941,688 shares outstanding as of December 31, 2016.

In accordance with Board of Governors of the Federal Reserve System regulations, at the time of the reorganization, the Company substantially restricted retained earnings by establishing a liquidation account. The liquidation account will be maintained for the benefit of eligible account holders who continue to maintain their accounts at the Bank after conversion. The Bank has established a parallel liquidation account to support the Company’s liquidation account in the event the Company does not have sufficient assets to fund its obligations under its liquidation account. The liquidation accounts will be reduced annually to the extent that eligible account holders have reduced their qualifying deposits. Subsequent increases will not restore an eligible account holder’s interest in the liquidation accounts. In the event of a complete liquidation of the Bank or the Company, each account holder will be entitled to receive a distribution in an amount proportionate to the adjusted qualifying account balances then held. The Bank may not pay dividends if those dividends would reduce equity capital below the required liquidation account amount.

The Company provides a variety of financial services to individuals and corporate customers through its wholly-owned subsidiary, Fairport Savings Bank. The Bank’s operations are conducted in five branches located in Monroe County, New York. The Company and the Bank are subject to the regulations of certain regulatory authorities and undergo periodic examinations by those regulatory authorities.

The Company’s principal business consists of originating one-to-four-family residential real estate mortgages, home equity loans and lines of credit and to a lesser extent, originations of commercial real estate, multi-family, construction, commercial and industrial, and other consumer loans. The Company has five mortgage origination offices located in Pittsford, New York, Watertown, New York, Greece, New York, Lewiston, New York, and Buffalo, New York.

The Bank also provides non-deposit investment services to its customers through its wholly-owned subsidiary, Fairport Wealth Management. Previous to January 15, 2016, Fairport Wealth Management was known as Oakleaf Services Corporation. The results of operations of Fairport Wealth Management are not material to the consolidated financial statements.

Basis of Consolidation

Basis of Consolidation

The consolidated financial statements include the accounts of the Company, the Bank and Fairport Wealth Management. All significant intercompany accounts and transactions have been eliminated in consolidation.

Use of Estimates

Use of Estimates

The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenue and expense during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant changes in the near term relate to the determination of the allowance for loan losses, deferred tax assets, and the estimation of fair values for accounting and disclosure purposes.

The Company is subject to the regulations of various governmental agencies. The Company also undergoes periodic examinations by the regulatory agencies which may subject it to further changes with respect to asset valuations, amounts of required loss allowances, and operating restrictions resulting from the regulators’ judgements based on information available to them at the time of their examinations.

Significant Group Concentrations of Credit Risk

Significant Group Concentrations of Credit Risk

Most of the Company’s activities are with customers located within Monroe, Livingston, Ontario, Orleans, Wayne, Jefferson, Niagara, and Erie Counties, New York. Note 2 discusses the types of securities that the Company invests in. The concentration of credit by type of loan is set forth in Note 3. Although the Bank has a diversified loan portfolio, its debtors’ ability to honor their contracts is primarily dependent upon the real estate and general economic conditions in those areas.

Cash and Cash Equivalents

Cash and Cash Equivalents

For purposes of the consolidated statements of cash flows, cash and cash equivalents include cash, balances due from banks and interest-earning demand deposits (with an original maturity of three months or less).

Securities

Securities

The Company classifies investment securities as either available-for-sale or held-to-maturity. The Company does not hold any securities considered to be trading. Available-for-sale securities are reported at fair value, with net unrealized gains and losses reflected as a separate component of stockholders’ equity, net of the applicable income tax effect. Held-to-maturity securities are those that the Company has the ability and intent to hold until maturity and are reported at amortized cost.

Gains or losses on investment security transactions are based on the amortized cost of the specific securities sold. Premiums and discounts on securities are amortized and accreted into income using the interest method over the period to maturity.

When the fair value of a held-to-maturity or available-for-sale security is less than its amortized cost basis, an assessment is made at the balance sheet date as to whether other-than-temporary impairment (“OTTI”) is present.

The Company considers numerous factors when determining whether potential OTTI exists and the period over which the debt security is expected to recover. The principal factors considered are (1) the length of time and the extent to which the fair value has been less than amortized cost basis, (2) the financial condition of the issuer (and guarantor, if any) and adverse conditions specifically related to the security industry or geographic area, (3) failure of the issuer of the security to make scheduled interest or principal payments, (4) any changes to the rating of a security by a rating agency, and (5) the presence of credit enhancements, if any, including the guarantee of the federal government or any of its agencies.

For debt securities, OTTI is considered to have occurred if (1) the Company intends to sell the security, (2) it is more likely than not the Company will be required to sell the security before recovery of its amortized cost basis, or (3) if the present value of expected cash flows is not sufficient to recover the entire amortized cost basis or carrying value.

For debt securities, credit-related OTTI is recognized in earnings while noncredit-related OTTI on securities not expected to be sold is recognized in other comprehensive income (loss). Credit-related OTTI is measured as the difference between the present value of an impaired security’s expected cash flows and its amortized cost basis or carrying value. Noncredit-related OTTI is measured as the difference between the fair value of the security and its amortized cost, or carrying value, less any credit-related losses recognized. For securities classified as held-to-maturity, the amount of OTTI recognized in other comprehensive income (loss) is accreted to the credit-adjusted expected cash flow amounts of the securities over future periods.

Investment securities are exposed to various risks such as interest rate, market and credit risks. Due to the level of risk associated with certain investment securities, it is at least reasonably possible that changes in the values of investment securities will occur in the near term and that such changes could materially affect the amounts reported in the accompanying financial statements.

Restricted Stock

Restricted Stock

Restricted equity securities are held as a long-term investment and value is determined based on the ultimate recoverability of the par value.  Impairment of these investments is evaluated quarterly and is a matter of judgment that reflects management’s view of the issuer’s long-term performance, which includes factors such as the following: its operating performance; the severity and duration of declines in the fair value of its net assets related to its capital stock amount; its commitment to make payments required by law or regulation and the level of such payments in relation to its operating performance; and its liquidity and funding position. After evaluating these considerations, the Company concluded that the par value of these investments will be recovered and, as such, has not recognized any impairment on its holdings of restricted equity securities during the current year.

The Company holds restricted stock from Federal Home Loan Bank and Atlantic Community Bankers Bank.

No impairment charges were recorded related to the restricted stock during 2017 or 2016.

Loans Held for Sale

Loans Held for Sale

Mortgage loans held for sale in the secondary market are carried at the lower of cost or fair value. Separate determinations of fair value for residential and commercial loans are made on an aggregate basis. Fair value is determined based solely on the effect of changes in secondary market interest rates and yield requirements from the commitment date to the date of the consolidated financial statements. Realized gains and losses on sales are computed using the specific identification method.

Loan Servicing Rights

Loan Servicing Rights

The Company retains the servicing on most conventional fixed-rate mortgage loans sold and receives a fee based on the principal balance outstanding.

Loans serviced for others totaled $132,427,000 and $118,565,000 at December 31, 2017 and 2016, respectively.

The Company also sells correspondent FHA and VA mortgage loans, servicing released.

Loan servicing rights are recorded at fair value when loans are sold with servicing rights retained. The fair value of the mortgage servicing rights (“MSRs”) is determined using a method which utilizes servicing income, discount rates, and prepayment speeds relative to the Bank’s portfolio for MSRs and are amortized over the life of the loan. MSRs amounted to $892,000 and $804,000 at December 31, 2017 and 2016, respectively, and are included in other assets on the consolidated balance sheets. In 2017, $131,000 was capitalized and $43,000 was amortized. In 2016, $268,000 was capitalized with $25,000 amortized.

Loans

Loans

Loans that management has the intent and ability to hold for the foreseeable future or until maturity or pay-off generally are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, and net deferred origination fees and costs. Interest income is accrued on the unpaid principal balance. Loan origination fees, net of certain direct origination costs, are deferred and recognized as an adjustment of the related loan yield using the interest method over the estimated life of the loan.

The accrual of interest is generally discontinued when the contractual payment of principal or interest has become 90 days past due or management has serious doubts about further collectability of principal or interest, even though the loan is currently performing. A loan may remain on accrual status if it is in the process of collection and is well secured. When a loan is placed on nonaccrual status, unpaid interest credited to income in the current year is reversed. Interest received on nonaccrual loans generally is either applied against principal or reported as interest income, according to management’s judgment as to the collectability of principal. Generally, loans are restored to accrual status when the obligation is brought current, has performed in accordance with the contractual terms for a reasonable period of time and the ultimate collectability of the total contractual principal and interest is no longer in doubt.

Allowance for Loan Losses

Allowance for Loan Losses

The allowance for loan losses (the “Allowance”) is established as losses are estimated to have occurred in the loan portfolio. The allowance for loan losses is recorded through a provision for loan losses charged to earnings. Loan losses are charged against the allowance when management believes the loan is uncollectable. Subsequent recoveries, if any, are credited to the allowance.

The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, the estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available.

The allowance consists of specific, general and unallocated components. The specific component relates to loans that are deemed impaired and classified as either special mention, substandard, doubtful, or loss. For such loans that are also classified as impaired, an allowance is generally established when the collateral value of the impaired loan is lower than the carrying value of that loan. The general component covers non-classified loans and is based on historical loss experience adjusted for the following qualitative factors: effects of changes in lending policies; national and/or local economic trends and conditions; trends in volume and terms of loans; experience, ability, and depth of management; levels and trends of delinquencies, non-accruals and classified loans; quality of institutions loan review system; collateral value for collateral dependent loans; concentrations of credit; and competition, legal and regulatory requirements on level of estimated credit losses. An unallocated component is maintained to cover uncertainties that could affect management’s estimate of probable losses. The unallocated component of the allowance reflects the margin of imprecision inherent in the underlying assumptions used in the methodologies for estimating specific and general losses in the portfolio.

A loan is considered impaired when, based on current information and events, it is probable that the Bank will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Impairment is measured on a loan by loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate or the fair value of the collateral if the loan is collateral dependent.

Large groups of smaller balance homogeneous loans are collectively evaluated for impairment. Accordingly, the Company does not separately identify individual consumer and residential loans for impairment disclosures unless subject to a troubled debt restructuring.

In addition, Federal regulatory agencies, as an integral part of their examination process, periodically review the Company’s allowance for loan losses and may require the Company to recognize additions to the allowance based on their judgements about information available to them at the time of their examination, which may not be currently available to management. Based on management’s comprehensive analysis of the loan portfolio, management believes the current level of the allowance for loan losses is adequate.

Bank Owned Life Insurance

Bank Owned Life Insurance

The Company holds life insurance policies on a key executive. Bank owned life insurance is recorded at the amount that can be realized under the insurance contract at the balance sheet date, which is the cash surrender value adjusted for other charges or other amounts due that are probable at settlement.

Premises and Equipment

Premises and Equipment

Premises and equipment are stated at cost. Depreciation and amortization are computed on the straight-line basis over the shorter of the estimated useful lives or lease terms (in the case of leasehold improvements) of the related assets. Estimated useful lives are generally 20 to 30 years for premises and 3 to 10 years for furniture and equipment.

Foreclosed Real Estate

Foreclosed Real Estate

Real estate properties acquired through, or in lieu of, loan foreclosure are initially recorded at fair value less estimated selling costs at the date of foreclosure. Any write-downs based on the asset’s fair value at date of acquisition are charged to the allowance for loan losses. After foreclosure, property held for sale is carried at the lower of the new basis or fair value less any costs to sell. Costs of significant property improvements are capitalized, whereas costs relating to holding property are expensed. Valuations are periodically performed by management, and any subsequent write-downs are recorded as a charge to earnings, if necessary, to reduce the carrying value of the property to the lower of its cost or fair value less cost to sell. The Company had no foreclosed real estate at December 31, 2017 and 2016. At December 31, 2017 the Company had one residential mortgage loan for $37,000 in the process of foreclosure and at December 31, 2016 the Company had no residential real estate loans in the process of foreclosure.

Income Taxes

Income Taxes

Income taxes are provided for the tax effects of certain transactions reported in the consolidated financial statements. Income taxes consist of taxes currently due plus deferred taxes related primarily to temporary differences between the financial reporting and income tax basis of the allowance for loan losses, premises and equipment, certain state tax credits, and deferred loan origination costs. The deferred tax assets and liabilities represent the future tax return consequences of the temporary differences, which will either be taxable or deductible when the assets and liabilities are recovered or settled. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some portion of the deferred tax assets will not be realized. Deferred tax assets and liabilities are reflected at income tax rates applicable to the period in which the deferred tax assets and liabilities are expected to be realized or settled. On December 22, 2017, the Tax Cuts and Jobs Act (the “Tax Act”) was enacted which reduced the corporate federal income tax rate from 34% to 21% and caused a reevaluation of net deferred tax assets. Generally accepted accounting principles requires that the impact of the provisions of the Tax Act be accounted for in the period of enactment. As changes in tax laws or rates are enacted, deferred tax assets and liabilities are adjusted through the provision for income taxes.

Advertising Costs

Advertising Costs

The Company follows the policy of charging the costs of advertising to expense as incurred.

Off-Balance Sheet Financial Instruments

Off-Balance Sheet Financial Instruments

In the ordinary course of business, the Company has entered into off-balance sheet financial instruments consisting of commitments to extend credit. Such financial instruments are recorded in the consolidated balance sheets when they are funded.

Transfers of Financial Assets

Transfers of Financial Assets

Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity.

Comprehensive Income (Loss)

Comprehensive Income (Loss)

Accounting principles generally require that recognized revenue, expenses, gains, and losses be included in earnings. Although certain changes in assets and liabilities, such as unrealized gains and losses on available-for-sale securities, are reported as a separate component of the stockholders’ equity section of the consolidated balance sheets, such items, along with net income, are components of comprehensive income (loss).

Accumulated other comprehensive gain (loss) represents the sum of these items, with the exception of net income, as of the balance sheet date and is represented in the table below.

	As of December 31,
	2017			2016
Accumulated Other Comprehensive Loss By Component:
Unrealized losses on securities available-for-sale	$	(208	)	$	(128	)
Tax effect		43			43
Net unrealized losses on securities available-for-sale		(165	)		(85	)
Accumulated other comprehensive loss	$	(165	)	$	(85	)

Earnings Per Common Share

Earnings Per Common Share

Basic earnings per common share is calculated by dividing net income available to common stockholders by the weighted-average number of common shares outstanding during the period. Diluted earnings per share is computed in a similar manner to that of basic earnings per share except that the weighted-average number of common shares outstanding is increased to include the number of incremental common shares that would have been outstanding if all potentially dilutive common shares (such as stock options) issued became vested during the period. Net income available to common stockholders is net income of the Company. The Company announced on July 27, 2017 that the Board of Directors had adopted its first stock repurchase program. Under the repurchase program, the Company may repurchase up to 97,084 shares of its common stock, or approximately 5% of its then outstanding shares. As of December 31, 2017, the Company had repurchased 69,535 shares at an average price of $15.30 per share. On September 27, 2017, the Board of Directors of the Company approved restricted stock and stock option grants to senior management and the directors of the Company, pursuant to the terms of the 2017 Equity Incentive Plan (the “Plan”). The Plan was approved previously by the Company’s stockholders on August 29, 2017. An aggregate of 152,080 stock options and 62,700 shares of restricted stock were granted. The grants to senior management and directors vest over a five year period in equal annual installments, with the first installment vesting on the first anniversary date of the grant and succeeding installments on each anniversary thereafter, through 2022. The Company did not grant any restricted stock awards or stock options for the year ended December 31, 2016.

Unallocated common shares held by the ESOP are not included in the weighted-average number of common shares outstanding for purposes of calculating basic earnings per common share until they are committed to be released. The average common shares outstanding were 1,899,473 and 1,899,552 for the years ended December 31, 2017 and December 31, 2016 respectively.

Treasury Stock

Treasury Stock

Treasury stock was recorded using the cost method and accordingly was presented as a reduction of stockholders’ equity. All treasury stock shares associated with our common stock have been cancelled as a result of the stock conversion and reorganization that occurred in July 2016.

Reclassifications

Reclassifications

Amounts in the prior year’s consolidated financial statements have been reclassified whenever necessary to conform to the current year’s presentation. Such reclassifications had no impact on stockholders’ equity or net income as previously reported.

New Accounting Pronouncements

New Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (“FASB”) issued an Accounting Standard Update (“ASU”) (ASU 2014-09) to amend its guidance on “Revenue from Contracts with Customers (Topic 606). The objective of the ASU is to align the recognition of revenue with the transfer of promised goods or services provided to customers in an amount that reflects the consideration which the entity expects to be entitled in exchange for those goods or services. This ASU will replace most existing revenue recognition guidance under GAAP when it becomes effective. In August 2015, the FASB issued an amendment (ASU 2015-14) which defers the effective date of this new guidance by one year. More detailed implementation guidance on Topic 606 was issued in March 2016 (ASU 2016-08), April 2016 (ASU 2016-10), May 2016 (ASU 2016-12), December 2016 (ASU 2016-20), February 2017 (ASU 2017-05), and September 2017 (ASU-2017-13) and the effective date and transition requirements for these ASUs are the same as the effective date and transition requirements of ASU 2014-09. The amendments in ASU 2014-09 are effective for public business entities for annual periods, beginning after December 15, 2017. The Company expects to adopt the revenue recognition guidance beginning January 1, 2018. A significant amount of the Company’s revenues are derived from net interest income on financial assets and liabilities, which are excluded from the scope of the amended guidance.  With respect to noninterest income, the Company has identified revenue streams within the scope of the guidance and is in the final stages of its accounting analysis of the underlying contracts. The Company does not presently expect that changes in the timing of revenue recognition will be material to the amount of annual revenue recognized by the Company. 

In August 2014, the FASB issued an amendment (ASU 2014-14) to its guidance on “Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40)”. The objective of the ASU is to reduce the diversity in how creditors classify government-guaranteed mortgage loans, including FHA or VA guaranteed loans, upon foreclosure, to provide more decision-useful information about a creditor’s foreclosed mortgage loans that are expected to be recovered, at least in part, through government guarantees. The amendments in this Update are effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2017. Public entities would be permitted to elect to early adopt for annual reporting periods beginning after December 15, 2016. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations or financial position.

In January 2016, the FASB issued an Update (ASU 2016-01) to its guidance on “Financial Instruments (Subtopic 825-10)”. This amendment addresses certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. These amendments require equity securities to be measured at fair value with changes in the fair value to be recognized through net income. The amendments also simplify the impairment assessment of equity investments without readily determinable fair values by requiring assessment for impairment qualitatively at each reporting period. For public business entities, the amendments in this Update are effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. Early adoption of the amendments in this Update is not permitted. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations or financial position.

In February 2016, the FASB issued an Update (ASU 2016-02) to its guidance on “Leases (Topic 842)”. The new leases standard applies a right-of-use (ROU) model that requires a lessee to record, for all leases with a lease term of more than 12 months, an asset representing its right to use the underlying asset and a liability to make lease payments. For leases with a term of 12 months or less, a practical expedient is available whereby a lessee may elect, by class of underlying asset, not to recognize an ROU asset or lease liability. The new leases standard requires a lessor to classify leases as either sales-type, direct financing or operating, similar to existing U.S. GAAP. Classification depends on the same five criteria used by lessees plus certain additional factors.

The subsequent accounting treatment for all three lease types is substantially equivalent to existing U.S. GAAP for sales-type leases, direct financing leases, and operating leases. However, the new standard updates certain aspects of the lessor accounting model to align it with the new lessee accounting model, as well as with the new revenue standard under Topic 606. Lessees and lessors are required to provide certain qualitative and quantitative disclosures to enable users of financial statements to assess the amount, timing, and uncertainty of cash flows arising from leases. The amendments are effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The adoption of this ASU will result in a gross up of the Consolidated Statements of Financial Condition for right-of-use assets and associated lease liabilities for operating leases in which the Company is the lessee. The Company is evaluating the significance and other effects of adoption on the consolidated financial statements and related disclosures. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations. Branch building leases have been reviewed and are considered immaterial to the financial statements; there are no equipment leases to consider.

In March 2016, the FASB issued an Update (ASU 2016-09) to its guidance on “Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting”. This amendment is intended to simplify the accounting for stock compensation. The areas for simplification in this Update involve several aspects of the accounting for share-based payment transactions, including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. For public business entities, the amendments in this Update are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The adoption of this guidance did not have a material impact on our consolidated results of operations or financial position.

In June 2016, the FASB issued an Update (ASU 2016-13) to its guidance on “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”. ASU 2016-13 requires credit losses on most financial assets measured at amortized cost and certain other instruments to be measured using an expected credit loss model (referred to as the current expected credit loss (CECL) model). Under this model, entities will estimate credit losses over the entire contractual term of the instrument (considering estimated prepayments, but not expected extensions or modifications unless reasonable expectation of a troubled debt restructuring exists) from the date of initial recognition of that instrument. The ASU also replaces the current accounting model for purchased credit impaired loans and debt securities. The allowance for credit losses for purchased financial assets with a more-than insignificant amount of credit deterioration since origination (“PCD assets”), should be determined in a similar manner to other financial assets measured on an amortized cost basis. However, upon initial recognition, the allowance for credit losses is added to the purchase price (“gross up approach”) to determine the initial amortized cost basis. The subsequent accounting for PCD financial assets is the same expected loss model described above. Further, the ASU made certain targeted amendments to the existing impairment model for available-for-sale (AFS) debt securities. For an AFS debt security for which there is neither the intent nor a more-likely-than-not requirement to sell, an entity will record credit losses as an allowance rather than a write-down of the amortized cost basis. For public business entities that are U.S. Securities and Exchange Commission (SEC) filers, the amendments in this Update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. All entities may adopt the amendments in this Update earlier as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. An entity will apply the amendments in this Update through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective (that is, a modified-retrospective approach). The Company is currently evaluating the potential impact on our consolidated results of operations or financial position. The initial adjustment will not be reported in earnings and therefore will not have any material impact on our consolidated results of operations, but it is expected that it will have an impact on our consolidated financial position at the date of adoption of this Update. At this time, we have not calculated the estimated impact that this Update will have on our Allowance for Loan Losses, however, we anticipate it will have a significant impact on the methodology process we utilize to calculate the allowance. Alternative methodologies and software vendors are currently being considered. Data requirements and integrity are being reviewed and enhancements incorporated into standard processes. The Company is in the early stages of evaluation and implementation of the guidance.

In August 2016, the FASB issued an Update (ASU 2016-15) which clarifies how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The amendments are intended to reduce diversity in practice. The amendment covers the following cash flows: Cash payments for debt prepayment or extinguishment costs will be classified in financing activities. Upon settlement of zero-coupon bonds and bonds with insignificant cash coupons, the portion of the payment attributable to imputed interest will be classified as an operating activity, while the portion of the payment attributable to principal will be classified as a financing activity. Cash paid by an acquirer that isn’t soon after a business combination for the settlement of a contingent consideration liability will be separated between financing activities and operating activities. Cash payments up to the amount of the contingent consideration liability recognized at the acquisition date will be classified in financing activities; any excess will be classified in operating activities. Cash paid soon after the business combination will be classified in investing activities. Cash proceeds received from the settlement of insurance claims will be classified on the basis of the related insurance coverage (that is, the nature of the loss). Cash proceeds from lump-sum settlements will be classified based on the nature of each loss included in the settlement. Cash proceeds received from the settlement of corporate-owned life insurance (COLI) and bank-owned life insurance (BOLI) policies will be classified as cash inflows from investing activities. Cash payments for premiums on COLI and BOLI may be classified as cash outflows for investing, operating, or a combination of both. A transferor’s beneficial interest obtained in a securitization of financial assets will be disclosed as a noncash activity, and cash received from beneficial interests will be classified in investing activities. Distributions received from equity method investees will be classified using either a cumulative earnings approach or a look- through approach as an accounting policy election. The ASU contains additional guidance clarifying when an entity should separate cash receipts and cash payments and classify them into more than one class of cash flows (including when reasonable judgment is required to estimate and allocate cash flows) versus when an entity should classify the aggregate amount into one class of cash flows on the basis of predominance. The amendments are effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2017. Early adoption is permitted. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity that elects early adoption must adopt all of the amendments in the same period. The Company is currently evaluating the potential impact of adoption of this ASU on our consolidated results of operations or financial position. 

In November 2016, the FASB issued an Update (ASU 2016-18) to its guidance on “Statement of Cash Flows (Topic 230) Restricted Cash” addresses diversity in practice from entities classifying and presenting transfers between cash and restricted cash as operating, investing or financing activities or as a combination of those activities in the statement of cash flows. The ASU requires entities to show the changes in the total cash, cash equivalents, restricted cash and restricted cash equivalents in the Statement of Cash Flows. As a result, transfers between such categories will no longer be presented in the Statement of Cash Flows. ASU 2016-18 is effective for the fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted provided all amendments are adopted in the same period. Management is evaluating the effect that this guidance will have on consolidated financial statements and disclosures.

In March 2017, the FASB issued an Update (ASU 2017-08) to its guidance on “Receivables – Nonrefundable Fees and Other Costs (Subtopic 310-20) related to premium amortization on purchased callable debt securities. The amendments in this Update shorten the amortization period for certain callable debt securities held at a premium. Specifically, the amendments require the premium to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. For public business entities, the amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. An entity should apply the amendments in this Update on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. Additionally, in the period of adoption, an entity should provide disclosure about a change in accounting principle. The adoption of this guidance is not expected to have a material impact on our consolidated results of operations or financial position.

In May 2017, the FASB issued an Update (ASU 2017-09) to its guidance on “Compensation - Stock Compensation (Topic 718)” such that an entity must apply modification accounting to changes in the terms or conditions of a share-based payment award unless all of the following criteria are met: (1) The fair value of the modified award is the same as the fair value of the original award immediately before the modification. The standard indicates that if the modification does not affect any of the inputs to the valuation technique used to value the award, the entity is not required to estimate the value immediately before and after the modification. (2) The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the modification. (3) The classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the modification. The amendments are effective for all entities for fiscal years beginning after December 15, 2017, including interim periods within those years. Early adoption is permitted, including adoption in an interim period. The Company is currently evaluating the potential impact of adoption of this ASU on our consolidated results of operations or financial position.

In February 2018, the FASB issued an Update (ASU 2018-02) to its guidance on “Income Statement—Reporting Comprehensive Income (Topic 220).” The amendments in this Update allow a reclassification for the so-called stranded tax effects in accumulated other comprehensive income (loss) resulting from the reduction in the federal corporate income tax rate to 21% made by the Tax Cuts and Jobs Act (the “Tax Act”), which was signed into law by the President on December 22, 2017. ASU 2018-02 amends accounting standards to allow reclassification to retained earnings of the effects of remeasuring deferred tax liabilities and deferred tax assets relating to items remaining within accumulated other comprehensive income (loss) as a result of the Tax Act. The amount of the reclassification is the difference between the amount initially charged or credited directly to other comprehensive income (loss) at the previously enacted U.S. federal corporate income tax rate and the amount that would have been charged or credited directly to other comprehensive income (loss) by applying the newly enacted 21% rate, but excluding the effect of any valuation allowance previously charged to income from continuing operations. ASU 2018-02 is effective for all entities for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early adoption is permitted, for public business entities for reporting periods for which financial statements have not yet been issued and should be applied retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate is recognized. The Company has elected to early adopt ASU 2018-02 and it is reflected in the accompanying financial statements.

Change in Accounting Estimate

Change in Accounting Estimate

Due to a change in New York State tax law, mortgage recording tax expensed during the years ended December 31, 2016 and 2015 are now a refundable tax credit, at the election of the tax payer.  Under New York law, a bank that paid special additional mortgage recording tax (“SAMRT”) on residential mortgages in any year beginning on or before January 1, 2015, may elect to treat the unused portion of the SAMRT credit on those mortgages as overpayment of tax to be carried forward or refunded.  Previously, any unused credit was only eligible to be carried forward to future years.  The Company made this election on December 20, 2016 and its impact in 2016 was as follows:

Income from continuing operations	$	627,000
Net income	$	464,000
Net income per share	$	0.24

XML

Nature of Operations and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Schedule of comprehensive income (loss)

	As of December 31,
	2017			2016
Accumulated Other Comprehensive Loss By Component:
Unrealized losses on securities available-for-sale	$	(208	)	$	(128	)
Tax effect		43			43
Net unrealized losses on securities available-for-sale		(165	)		(85	)
Accumulated other comprehensive loss	$	(165	)	$	(85	)

Schedule of change in accounting estimate

Income from continuing operations	$	627,000
Net income	$	464,000
Net income per share	$	0.24

XML

Securities (Tables)

12 Months Ended

Dec. 31, 2017

Investments, Debt and Equity Securities [Abstract]

Schedule of amortized cost and estimated fair value of securities with gross unrealized gains and losses

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
	(In Thousands)
December 31, 2017:
Available-for-Sale:
U.S. Government and agency obligations	$	10,612	$	-	$	(142	)	$	10,470
Mortgage-backed securities - residential		7,909		19		(85	)		7,843
	$	18,521	$	19	$	(227	)	$	18,313
Held-to-Maturity:
Mortgage-backed securities - residential	$	637	$	9	$	-		$	646
State and municipal securities		5,938		41		(37	)		5,942
	$	6,575	$	50	$	(37	)	$	6,588
December 31, 2016:
Available-for-Sale:
U.S. Government and agency obligations	$	8,106	$	3	$	(110	)	$	7,999
Mortgage-backed securities - residential		9,769		42		(63	)		9,748
	$	17,875	$	45	$	(173	)	$	17,747
Held-to-Maturity:
Mortgage-backed securities - residential	$	745	$	13	$	-		$	758
State and municipal securities		6,675		25		(74	)		6,626
	$	7,420	$	38	$	(74	)	$	7,384

Schedule of amortized cost and estimated fair value by contractual maturity of debt securities

	Available-for-Sale				Held-to-Maturity
	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
	(In Thousands)
Due in one year or less	$	-	$	-	$	839	$	837
Due after one year through five years		8,607		8,489		3,302		3,294
Due after five years through ten years		1,005		1,001		1,797		1,811
Due after ten years		1,000		980		-		-
Mortgage-backed securities - residential		7,909		7,843		637		646
	$	18,521	$	18,313	$	6,575	$	6,588

Schedule of continuous unrealized loss position for investment securities

	Less than 12 Months				12 Months or More				Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses
	(In Thousands)
2017:
Available-for-Sale
U.S. Government and agency obligations	$	4,472	$	34	$	5,999	$	108	$	10,471	$	142
Mortgage-backed securities - residential		2,459		23		3,435		62		5,894		85
	$	6,931	$	57	$	9,434	$	170	$	16,365	$	227
2017:
Held-to-Maturity
Mortgage-backed securities – residential(1)	$	-	$	-	$	171	$	-	$	171	$	-
State and municipal Securities		1,574		16		1,331		21		2,905		37
	$	1,574	$	16	$	1,502	$	21	$	3,076	$	37
2016:
Available-for-Sale
U.S. Government and agency obligations	$	6,996	$	110	$	-	$	-	$	6,996	$	110
Mortgage-backed securities - residential		4,441		49		987		14		5,428		63
	$	11,437	$	159	$	987	$	14	$	12,424	$	173
2016:
Held-to-Maturity
Mortgage-backed securities – residential(1)	$	178	$	-	$	-	$	-	$	178	$	-
State and municipal  Securities(1)		4,275		74		45		-		4,320		74
	$	4,453	$	74	$	45	$	-	$	4,498	$	74

⁽¹⁾ Aggregate unrealized loss position of these securities is less than $500.

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Loans and The Allowance for Loan Losses (Tables)

12 Months Ended

Dec. 31, 2017

Loans and Leases Receivable Disclosure [Abstract]

Schedule of net loans

	2017			2016
	(In Thousands)
Real estate loans:
Secured by one- to four-family residences	$	206,894		$	188,573
Secured by multi-family residences		10,650			5,103
Construction		10,750			6,134
Commercial real estate		14,803			8,440
Home equity lines of credit		17,127			16,797
Commercial & industrial		3,679			1,947
Other loans		70			75
Total Loans		263,973			227,069
Net deferred loan origination (fees) costs		(1	)		113
Allowance for loan losses		(1,261	)		(990	)
Net Loans	$	262,711		$	226,192

Schedule of loan portfolio of portfolio segments and classes

Portfolio Segment	Class
Real Estate Loans	Secured by one-to-four family residences
	Secured by multi-family residences
	Construction Commercial real estate Home equity lines of credit
Other Loans	Commercial & industrial
	Other loans

Schedule of changes in the allowance for loan losses

	Secured by 1-4  family residential		Secured by multi- family residential			Construction		Commercial		Home  Equity  Lines of  Credit			Commercial  & Industrial		Other/  Unallocated			Total
	(In Thousands)
At December 31, 2017
Beginning Balance	$	584	$	38		$	31	$	84	$	112		$	28	$	113		$	990
Charge Offs		-		-			-		-		-			-		-			-
Recoveries		-		-			-		-		-			-		-			-
Provisions		232		42			23		64		(5	)		19		(104	)		271
Ending Balance (1)	$	816	$	80		$	54	$	148	$	107		$	47	$	9		$	1,261
At December 31, 2016
Beginning Balance	$	524	$	39		$	6	$	35	$	101		$	11	$	95		$	811
Charge Offs		-		-			-		-		-			-		(1	)		(1	)
Recoveries		-		-			-		-		-			-		-			-
Provisions		60		(1	)		25		49		11			17		19			180
Ending  Balance (1)	$	584	$	38		$	31	$	84	$	112		$	28	$	113		$	990

(1)All Loans are collectively evaluated for impairment.

Schedule of risk category of loans by class

	Pass		Special  Mention		Substandard		Doubtful		Total
	(In Thousands)
2017
One- to four-family residential	$	203,815	$	116	$	2,963	$	-	$	206,894
Multi-family residential		10,650		-		-		-		10,650
Construction		10,750		-		-		-		10,750
Commercial real estate		14,803		-		-		-		14,803
Home equity lines of credit		16,897		-		230		-		17,127
Commercial & industrial		3,679		-		-		-		3,679
Other loans		70		-		-		-		70
Total	$	260,664	$	116	$	3,193	$	-	$	263,973
2016
One- to four-family residential	$	187,079	$	-	$	1,494	$	-	$	188,573
Multi-family residential		5,103		-		-		-		5,103
Construction		6,134		-		-		-		6,134
Commercial real estate		8,440		-		-		-		8,440
Home equity lines of credit		16,498		-		299		-		16,797
Commercial & industrial		1,900		-		47		-		1,947
Other loans		75		-		-		-		75
Total	$	225,229	$	-	$	1,840	$	-	$	227,069

Schedule of age analysis of past due loans, segregated by portfolio segment and class of loans

	30-59 Days Past Due		60-89 Days Past Due		Greater than 90 Days		Total Past Due		Current		Total Loans Receivable
	(In thousands)
2017
Real estate loans:
One- to four-family residential	$	699	$	-	$	153	$	852	$	206,042	$	206,894
Multi-family residential		-		-		-		-		10,650		10,650
Construction		-		-		-		-		10,750		10,750
Commercial		-		-		-		-		14,803		14,803
Home equity lines of credit		-		-		-		-		17,127		17,127
Commercial & industrial		-		-		-		-		3,679		3,679
Other loans		-		-		-		-		70		70
Total	$	699	$	-	$	153	$	852	$	263,121	$	263,973
2016
Real estate loans:
One- to four-family residential	$	89	$	-	$	-	$	89	$	188,484	$	188,573
Multi-family residential		-		-		-		-		5,103		5,103
Construction		-		-		-		-		6,134		6,134
Commercial		-		-		-		-		8,440		8,440
Home equity lines of credit		-		-		-		-		16,797		16,797
Commercial & industrial		47		-		-		47		1,900		1,947
Other loans		-		-		-		-		75		75
Total	$	136	$	-	$	-	$	136	$	226,933	$	227,069

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Premises and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule of premises and equipment

	2017			2016
	(In Thousands)
Premises	$	4,946		$	4,355
Furniture and equipment		3,356			3,628
		8,302			7,983
Accumulated depreciation and amortization		(5,238	)		(4,808	)
	$	3,064		$	3,175

Schedule of future minimum rental payments under these leases

Years ending December 31,
2018	$	449
2019		439
2020		390
2021		368
2022		307
Thereafter		1,626
Total	$	3,579

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Deposits (Tables)

12 Months Ended

Dec. 31, 2017

Deposits [Abstract]

Schedule of components of deposits

	2017		2016
	(In Thousands)
Non-interest bearing	$	8,385	$	8,423
NOW accounts		31,807		29,725
Regular savings, tax escrow and demand clubs		25,413		26,655
Money market		37,772		30,123
Individual retirement accounts		7,069		6,975
Certificates of deposit		106,245		81,033
	$	216,691	$	182,934

Schedule of individual retirement accounts and certificates of deposit have scheduled maturities

As of December 31, 2017, individual retirement accounts and certificates of deposit have scheduled maturities as follows (in thousands):

2018	$	55,737
2019		31,514
2020		20,067
2021		4,136
2022		1,860
	$	113,314

Schedule of interest expense on deposits

	2017		2016
	(In Thousands)
NOW accounts	$	89	$	74
Regular savings and demand clubs		103		102
Money market		284		100
Individual retirement accounts		75		64
Certificates of deposit		1,260		1,096
	$	1,811	$	1,436

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Borrowings (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of contractual maturities of borrowings

Advance Date	Maturity Date	Current Rate			2017		2016
					(In Thousands)
04/25/12	04/25/17		1.03	%		-		128
08/16/12	08/16/17		1.00	%		-		306
09/05/12	09/05/19		1.13	%		539		829
11/06/12	11/06/17		0.86	%		-		407
11/27/12	11/27/17		1.12	%		-		1,000
12/19/12	12/19/19		1.20	%		613		902
12/27/12	12/27/17		0.89	%		-		220
01/04/13	01/04/19		1.52	%		1,000		1,000
01/15/13	01/16/18		1.18	%		1,000		1,000
01/22/13	01/23/17		0.96	%		-		1,000
01/22/13	01/22/18		1.20	%		1,000		1,000
01/22/13	01/22/19		1.44	%		1,000		1,000
02/20/13	02/21/20		1.28	%		331		475
02/20/13	02/21/23		1.77	%		547		646
07/02/13	07/02/18		1.35	%		274		682
07/22/13	07/23/18		1.27	%		275		681
09/19/13	09/19/18		1.37	%		171		375
01/21/14	01/22/18		1.72	%		1,000		1,000
01/21/14	01/22/19		1.45	%		240		442
03/20/14	03/20/19		1.50	%		411		714
03/24/14	03/24/17		1.32	%		-		1,500
07/21/14	07/21/21		1.94	%		541		682
07/21/14	07/22/19		2.08	%		500		500
07/21/14	07/23/18		1.79	%		1,000		1,000
08/06/14	08/06/18		1.80	%		1,000		1,000
08/21/14	08/21/19		2.12	%		1,000		1,000
10/02/14	10/04/21		2.00	%		1,153		1,434
10/15/14	10/15/21		1.69	%		574		715
11/28/14	11/29/21		1.90	%		1,175		1,455
12/31/14	12/31/19		1.63	%		427		626
12/31/14	01/02/18		1.52	%		1,000		1,000
01/14/15	01/14/20		1.73	%		1,500		1,500
01/21/15	01/21/20		1.79	%		500		500
01/21/15	01/21/21		1.97	%		500		500
04/13/15	04/13/20		1.74	%		1,000		1,000
05/20/15	05/20/20		1.52	%		509		708
05/20/15	05/20/22		1.91	%		658		796
06/25/15	06/25/20		1.65	%		527		725
06/25/15	06/26/17		1.14	%		-		1,000
10/29/15	10/29/20		1.51	%		1,185		1,579
10/29/15	10/29/20		1.90	%		1,000		1,000
01/27/16	01/27/21		1.92	%		1,000		1,000
01/27/16	01/27/23		1.87	%		751		888
02/12/16	02/13/23		1.66	%		761		898
02/12/16	02/13/23		2.04	%		500		500

Advance Date	Maturity Date	Current Rate			2017		2016
					(In Thousands)
08/24/16	08/24/17		1.01	%		-		1,000
08/24/16	08/24/18		1.22	%		1,000		1,000
09/21/16	03/21/17		0.83	%		-		1,000
09/21/16	09/21/17		1.06	%		-		2,000
09/30/16	03/30/17		0.79	%		-		1,000
10/28/16	10/28/20		1.57	%		1,000		1,000
11/04/16	11/04/21		1.72	%		2,000		2,000
11/17/16	11/17/21		2.13	%		1,000		1,000
11/17/16	11/17/21		1.78	%		807		1,000
11/17/16	11/17/23		2.07	%		866		1,000
11/28/16	11/29/19		1.78	%		1,500		1,500
12/08/16	12/08/17		1.22	%		-		1,000
12/21/16	06/21/17		0.95	%		-		1,000
12/21/16	12/23/19		1.91	%		1,000		1,000
12/30/16	01/03/17		0.74	%		-		3,000
01/04/17	01/04/19		1.62	%		1,500		-
01/19/17	01/21/20		1.91	%		1,000		-
03/24/17	03/24/22		2.00	%		1,309		-
03/24/17	03/25/24		2.28	%		1,367		-
07/24/17	07/24/20		1.88	%		1,000		-
07/24/17	07/26/21		2.03	%		1,000		-
07/24/17	07/25/22		1.94	%		936		-
08/31/17	08/31/18		1.55	%		1,000		-
08/31/17	08/31/21		1.96	%		1,000		-
09/11/17	09/11/20		1.80	%		1,000		-
09/11/17	09/12/22		2.07	%		1,500		-
09/27/17	09/27/18		1.66	%		1,500		-
09/27/17	09/27/22		2.28	%		1,000		-
10/04/17	04/04/18		1.50	%		1,500		-
11/27/17	05/29/18		1.76	%		3,500		-
12/04/17	03/05/18		1.59	%		1,500		-
12/08/17	04/09/18		1.64	%		1,000		-
12/11/17	01/11/18		1.55	%		1,500		-
12/11/17	03/12/18		1.61	%		1,500		-
12/29/17	01/02/18		1.53	%		2,500		-
					$	64,447	$	56,813

Schedule of contractual maturities of all FHLB borrowings

	Contractual  Maturity		Weighted  Average Rate
2018	$	23,220		1.57	%
2019		9,730		1.66
2020		10,553		1.72
2021		10,750		1.90
2022		5,403		2.05
Thereafter		4,791		2.00
	$	64,447		1.73	%

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of provision for income taxes

	2017		2016
	(In Thousands)
Current
Federal	$	279	$	439
State		4		4
Deferred		165		(115	)
	$	448	$	328

Schedule of differences between income tax expense to statutory federal tax at a rate

	2017						2016
	Amount			% of Pre-tax  Income			Amount			% of Pre-tax  Income
Federal Tax at a Statutory rate	$	252			34	%	$	431			34	%
State taxes, net of Federal provision		(108	)		(15	)		119			9
Change in tax rate		228			31			-			-
Change in valuation allowance		106			14			(178	)		(14	)
Nontaxable interest and dividend income		(42	)		(6	)		(44	)		(3	)
Other items		12			3			-			-
Income tax provision	$	448			61	%	$	328			26	%

Schedule of deferred income tax assets and liabilities resulting from temporary differences

	2017			2016
	(In Thousands)
Deferred tax assets:
Deferred loan origination fees	$	92		$	95
Allowance for loan losses - Federal		330			379
State tax credits		1,075			1,102
Depreciation		-			64
Supplemental Executive Retirement Plan		208			290
Unrealized loss on securities available for sale and transferred to  held to maturity		44			43
Net operating loss		270			159
Stock compensation		14			-
Other		1			-
		2,034			2,132
Valuation allowance		(1,424	)		(1,318	)
Total deferred tax assets, net of valuation allowance		610			814
Deferred tax liabilities:
Depreciation		(9	)		-
Mortgage servicing rights		(233	)		(308	)
Total deferred tax liabilities		(242	)		(308	)
Net deferred tax asset	$	368		$	506

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Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2017

Comprehensive Income Loss Note [Abstract]

Schedule of accumulated other comprehensive income (loss)

	For the year ended December 31, 2017
	Unrealized Gains and Losses on  Available for  Sales Securities			Total
Beginning balance	$	(85	)	$	(85	)
Other comprehensive (loss) income before reclassifications		(80	)		(80	)
Amounts reclassified from AOCI		-			-
Ending balance	$	(165	)	$	(165	)

	For the year ended December 31, 2016
	Unrealized Gains  and Losses on  Available for  Sales Securities			Unrealized Losses  on Securities  Transferred to  Held to Maturity			Total
Beginning balance	$	(4	)	$	(208	)	$	(212	)
Other comprehensive (loss) income before reclassifications		(57	)		208			151
Amounts reclassified from AOCI		(24	)		-			(24	)
Ending balance	$	(85	)	$	-		$	(85	)

Schedule of amounts reclassified out of each component

For the year ended December 31,
Details about AOCI	2016			Affected Line Item in the Statement of Income
Available for sale securities	$	24		Realized gain on sale of securities
Held to maturity securities		12		Realized gain on sale of securities
		(12	)	Provision for Income Taxes
	$	24		Net Income

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Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of stock option activity and related information for its option plans

	2017				2016
	Options		Weighted Average  Exercise Price Per  Share		Options		Weighted Average  Exercise Price Per  Share
Outstanding at beginning of year		-	$	-		-	$	-
Grants		152,080		16.72		-		-
Exercised		-		-		-		-
Outstanding at year end		152,080	$	16.72		-	$	-
Exercisable at year end		-	$	-		-	$	-

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Commitments (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of nonperformance by the other party to the financial instrument for commitments

	2017		2016
	(In Thousands)
Commitments to extend credit:
Commitments to grant loans	$	12,397	$	15,199
Unadvanced portion of construction loans		5,945		5,009
Unfunded commitments under lines of credit		17,523		17,587
	$	35,865	$	37,795

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Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2017

Banking and Thrift [Abstract]

Schedule of capital amounts and ratios

Minimum

To Be "Well-

Minimum

Capitalized"

Well-Capitalized

For Capital

Under Prompt

With Buffer, Fully

Actual

Adequacy Purposes

Corrective Provisions

Phased in for 2019

(Dollars in thousands)

Amount

Ratio

Amount

Ratio

Amount

Ratio

Amount

Ratio

As of December 31, 2017

Total Core Capital (to Risk-Weighted Assets)

$

30,230

16.18

%

³$14,946

³8.0

%

³$18,683

³10.0

%

³$19,617

³10.5

%

Tier 1 Capital (to Risk-Weighted Assets)

28,969

15.51

³11,210

³6.0

³14,946

³8.0

³15,881

³8.5

Tier 1 Common Equity (to Risk-Weighted Assets)

28,969

15.51

³8,407

³4.5

³12,144

³6.5

³13,078

³7.0

Tier 1 Capital (to Assets)

28,969

9.51

³12,183

³4.0

³15,229

³5.0

³15,229

³5.0

As of December 31, 2016:

Total Core Capital (to Risk-Weighted Assets)

$

29,264

18.45

%

³$12,689

³8.0

%

³$15,861

³10.0

%

³$16,654

³10.5

%

Tier 1 Capital (to Risk-Weighted Assets)

28,274

17.83

³9,516

³6.0

³12,689

³8.0

³13,482

³8.5

Tier 1 Common Equity (to Risk-Weighted Assets)

28,274

17.83

³7,137

³4.5

³10,309

³6.5

³11,102

³7.0

Tier 1 Capital (to Assets)

28,274

10.70

³10,572

³4.0

³13,214

³5.0

³13,214

³5.0

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Fair Value Measurement and Fair Values of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Schedule of assets measured at fair value on a recurring basis

(In Thousands)
2017	Total		Level 1		Level 2		Level 3
U.S. Government and agency obligations	$	10,470	$	-	$	10,470	$	-
Mortgage-backed securities - residential		7,843		-		7,843		-
Total Available-for-Sale Securities	$	18,313	$	-	$	18,313	$	-

2016	Total		Level 1		Level 2		Level 3
U.S. Government and agency obligations	$	7,999	$	-	$	7,999	$	-
Mortgage-backed securities - residential		9,748		-		9,748		-
Total Available-for-Sale Securities	$	17,747	$	-	$	17,747	$	-

Schedule of carrying amounts and estimated fair values of the financial instruments

		2017				2016
	Fair Value Hierarchy	Carrying Amount		Fair Value		Carrying Amount		Fair Value
		(In Thousands)
Financial assets:
Cash and due from banks	1	$	1,672	$	1,672	$	1,634	$	1,634
Interest bearing demand deposits	1		8,725		8,725		5,773		5,773
Securities available for sale	2		18,313		18,313		17,747		17,747
Securities held to maturity	2		6,575		6,588		7,420		7,384
Investment in restricted stock	2		3,270		3,270		2,886		2,886
Loans held for sale	2		2,770		2,770		2,059		2,059
Loans, net	3		262,711		261,588		226,192		225,569
Accrued interest receivable	1		824		824		652		652
Financial liabilities:
Deposits	1/2		216,691		216,878		182,934		182,969
Borrowings	2		64,447		64,502		56,813		57,008
Accrued interest payable	1		94		94		71		71

XML

FSB Bancorp, Inc. (Parent Company Only) Financial Information (Tables)

12 Months Ended

Dec. 31, 2017

Condensed Financial Information of Parent Company Only Disclosure [Abstract]

Schedule of Balance Sheets

Balance Sheets

	December 31
	2017		2016
	(In Thousands)
Assets
Cash and cash equivalents	$	1,717	$	2,881
Investment in banking subsidiary		29,171		28,610
ESOP loan receivable		365		398
Total Assets	$	31,253	$	31,889
Liabilities and Stockholders’ Equity
Total Liabilities	$	34	$	30
Stockholders’ Equity		31,219		31,859
Total Liabilities and Stockholders’ Equity	$	31,253	$	31,889

Schedule of Statements of Income

Statements of Income

	Year Ended December 31
	2017			2016
	(In Thousands)
Interest Income	$	29		$	20
Other Expense		(301	)		(89	)
Equity in undistributed earnings of banking subsidiary		562			1,007
Net Income	$	290		$	938

Schedule of Statements of Cash Flows

Statements of Cash Flows

	Year Ended December 31
	2017			2016
	(In Thousands)
Cash flows from operating activities
Net income	$	290		$	938
Adjustments to reconcile net income to net cash flows from operating activities
Equity in undistributed earnings of banking subsidiary		(562	)		(1,007	)
Stock based compensation		133			-
Decrease in accrued  interest receivable		-			8
Net increase in other liabilities		4			-
Net cash flows from operating activities		(135	)		(61	)
Cash flows from investing activities
Proceeds to banking subsidiary		-			(7,300	)
Proceeds from maturities and calls of securities available-for-sale		-			1,000
Payments received on ESOP loan		33			33
Net cash flows from investing activities		33			(6,267	)
Cash flows from financing activities
Proceeds from stock conversion and offering		-			8,944
Purchase of common stock		(1,062	)		-
Net cash flows from financing activities		(1,062	)		8,944
Net (decrease) increase in cash and cash equivalents		(1,164	)		2,616
Cash and cash equivalents - beginning		2,881			265
Cash and cash equivalents - ending	$	1,717		$	2,881

XML

Nature of Operations and Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Loss By Component:
Unrealized losses on securities available-for-sale	$ (208)	$ (128)
Tax effect	43	43
Net unrealized losses on securities available-for-sale	(165)	(85)	$ (4)
Accumulated other comprehensive income	$ (165)	$ (85)	$ (212)

XML

Nature of Operations and Summary of Significant Accounting Policies (Detail 1) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Change in Accounting Estimate [Line Items]
Net income	$ 290,000	$ 938,000
Net income per share (in dollars per share)	$ 0.15	$ 0.49
Change in New York State Tax Law
Change in Accounting Estimate [Line Items]
Income from continuing operations		$ 627,000
Net income		$ 464,000
Net income per share (in dollars per share)		$ 0.24

XML

Nature of Operations and Summary of Significant Accounting Policies (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Offering price (in dollars per share)	$ 15.30	$ 10.00
Proceeds from stock conversion and offering		$ 8,990,000
Number of shares issued to FSB Community		1.0884
Common stock, shares outstanding	1,934,853	1,941,688
Loan servicing rights	$ 132,427,000	$ 118,565,000
Proceeds from MSR	892,000	804,000
Capitalization of MSR	131,000	268,000
Amortization of MSR	43,000	$ 25,000
Residential mortgage loan for foreclosure	$ 37,000
Corporate federal income tax rat	34.00%	34.00%
Reduction in the corporate federal income tax rate	21.00%
Fairport Savings Bank
Nature Of Operations And Summary Of Significant Accounting Policies [Line Items]
Number of common stock issued	1,034,649
Offering price (in dollars per share)	$ 10.00
Proceeds from stock conversion and offering	$ 10,300,000
Conversion related expenses	1,400,000
Net proceeds from stock offering	$ 8,900,000

XML

Nature of Operations and Summary of Significant Accounting Policies (Detail Textuals 1) - $ / shares	1 Months Ended		12 Months Ended
	Aug. 29, 2017	Jul. 27, 2017	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Depreciation Methods			Depreciation and amortization are computed on the straight-line basis over the shorter of the estimated useful lives or lease terms (in the case of leasehold improvements) of the related assets
Shares excluded from calculation of EPS			1,899,473	1,899,552
Repurchase of common stock		97,084	69,535
Percent of outstanding shares		5.00%
Average price (in dollars per share)			$ 15.30	$ 10.00
Stock Option
Property, Plant and Equipment [Line Items]
Stock granted	152,080
Restricted Stock
Property, Plant and Equipment [Line Items]
Stock granted	62,700
Minimum | Premises
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			20 years
Minimum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			3 years
Maximum | Premises
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			30 years
Maximum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Estimated Useful Lives			10 years

XML

Securities - Amortized cost and estimated fair value of securities with gross unrealized gains and losses (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Available-for-Sale:
Amortized Cost	$ 18,521	$ 17,875
Gross Unrealized Gains	19	45
Gross Unrealized Losses	(227)	(173)
Fair Value	18,313	17,747
Held-to-Maturity:
Amortized Cost	6,575	7,420
Gross Unrealized Gains	50	38
Gross Unrealized Losses	(37)	(74)
Fair Value	6,588	7,384
U.S. Government and agency obligations
Available-for-Sale:
Amortized Cost	10,612	8,106
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(142)	(110)
Fair Value	10,470	7,999
Mortgage-backed securities - residential
Available-for-Sale:
Amortized Cost	7,909	9,769
Gross Unrealized Gains	19	42
Gross Unrealized Losses	(85)	(63)
Fair Value	7,843	9,748
Held-to-Maturity:
Amortized Cost	637	745
Gross Unrealized Gains	9	13
Gross Unrealized Losses	0	0
Fair Value	646	758
State and municipal securities
Held-to-Maturity:
Amortized Cost	5,938	6,675
Gross Unrealized Gains	41	25
Gross Unrealized Losses	(37)	(74)
Fair Value	$ 5,942	$ 6,626

XML

Securities - Amortized cost and estimated fair value by contractual maturity of debt securities (Details 1) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Available-for-Sale Amortized Cost
Due in one year or less	$ 0
Due after one year through five years	8,607
Due after five years through ten years	1,005
Due after ten years	1,000
Amortized Cost	18,521	$ 17,875
Available-for-Sale Fair Value
Due in one year or less	0
Due after one year through five years	8,489
Due after five years through ten years	1,001
Due after ten years	980
Fair Value	18,313	17,747
Held-to-Maturity Amortized Cost
Due in one year or less	839
Due after one year through five years	3,302
Due after five years through ten years	1,797
Due after ten years	0
Amortized cost	6,575	7,420
Held-to-Maturity Fair Value
Due in one year or less	837
Due after one year through five years	3,294
Due after five years through ten years	1,811
Due after ten years	0
Fair Value	6,588	7,384
Mortgage-backed securities - residential
Available-for-Sale Amortized Cost
Amortized Cost	7,909	9,769
Available-for-Sale Fair Value
Fair Value	7,843	9,748
Held-to-Maturity Amortized Cost
Amortized cost	637	745
Held-to-Maturity Fair Value
Fair Value	$ 646	$ 758

XML

Securities - Gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (Details 2) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Available-for-Sale:
Less than Twelve Months, fair value		$ 6,931	$ 11,437
Less than Twelve Months, unrealized losses		57	159
Twelve Months or More, fair value		9,434	987
Twelve Months or More, unrealized losses		170	14
Total Fair Value		16,365	12,424
Total Unrealized Losses		227	173
Held-to-Maturity
Less than Twelve Months, Fair Value		1,574	4,453
Less than Twelve Months, Unrealized Losses		16	74
Twelve Months or More, Fair Value		1,502	45
Twelve Months or More, Unrealized Losses		21	0
Total Fair Value		3,076	4,498
Total Unrealized Losses		37	74
U.S. Government and agency obligations
Available-for-Sale:
Less than Twelve Months, fair value		4,472	6,996
Less than Twelve Months, unrealized losses		34	110
Twelve Months or More, fair value		5,999	0
Twelve Months or More, unrealized losses		108	0
Total Fair Value		10,471	6,996
Total Unrealized Losses		142	110
Mortgage-backed securities - residential
Available-for-Sale:
Less than Twelve Months, fair value		2,459	4,441
Less than Twelve Months, unrealized losses		23	49
Twelve Months or More, fair value		3,435	987
Twelve Months or More, unrealized losses		62	14
Total Fair Value		5,894	5,428
Total Unrealized Losses		85	63
Held-to-Maturity
Less than Twelve Months, Fair Value	[1]	0	178
Less than Twelve Months, Unrealized Losses	[1]	0	0
Twelve Months or More, Fair Value	[1]	171	0
Twelve Months or More, Unrealized Losses	[1]	0	0
Total Fair Value	[1]	171	178
Total Unrealized Losses	[1]	0	0
State and municipal securities
Held-to-Maturity
Less than Twelve Months, Fair Value		1,574	4,275	[1]
Less than Twelve Months, Unrealized Losses		16	74	[1]
Twelve Months or More, Fair Value		1,331	45	[1]
Twelve Months or More, Unrealized Losses		21	0	[1]
Total Fair Value		2,905	4,320	[1]
Total Unrealized Losses		$ 37	$ 74	[1]

[1] Aggregate unrealized loss position of these securities is less than $500.

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Securities (Parenthetical) - Gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Maximum
Available For Sale And Held To Maturity Securities Unrealized Loss Position [Line Items]
Aggregate unrealized loss	$ 500	$ 500

XML

Securities (Detail Textuals) $ in Thousands	12 Months Ended
	Dec. 31, 2017 Security	Dec. 31, 2016 USD ($)
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]
Gain on sales of securities | $		$ 36
Proceeds from sale of securities | $		$ 2,606,000
Percentage of principal outstanding held to maturity securities		85.00%
U.S. Government and agency obligations
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]
Number of Investment securities for continuous unrealized loss position for less than twelve months.	4
Number of Investment securities for continuous unrealized loss position for more than twelve months.	5
Mortgage-backed securities - residential
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]
Number of Investment securities for continuous unrealized loss position for less than twelve months.	4
Number of Investment securities for continuous unrealized loss position for more than twelve months.	5
State and municipal securities
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]
Number of Investment securities for continuous unrealized loss position for less than twelve months.	10
Number of Investment securities for continuous unrealized loss position for more than twelve months.	5
Available-for-sale securities
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]
Gain on sales of securities | $		$ 24,000
Held-to-maturity securities
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]
Gain on sales of securities | $		$ 12,000

XML

Loans - Major classifications of loans (Details) - USD ($) $ in Thousands	Dec. 31, 2017		Dec. 31, 2016		Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 263,973		$ 227,069
Net deferred loan origination (fees) costs	(1)		113
Allowance for loan losses	(1,261)	[1]	(990)	[1]	$ (811)
Net Loans	262,711		226,192
Real estate loans: | Secured by one-to-four family residences
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	206,894		188,573
Allowance for loan losses	(816)	[1]	(584)	[1]	(524)
Real estate loans: | Secured by multi-family residences
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	10,650		5,103
Allowance for loan losses	(80)	[1]	(38)	[1]	(39)
Real estate loans: | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	10,750		6,134
Allowance for loan losses	(54)	[1]	(31)	[1]	(6)
Real estate loans: | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	14,803		8,440
Allowance for loan losses	(148)	[1]	(84)	[1]	(35)
Real estate loans: | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	17,127		16,797
Allowance for loan losses	(107)	[1]	(112)	[1]	(101)
Other Loans Portfolio Segment | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	3,679		1,947
Allowance for loan losses	(47)	[1]	(28)	[1]	$ (11)
Other Loans Portfolio Segment | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 70		$ 75

[1] All Loans are collectively evaluated for impairment.

XML

Loans - Summary of allowance for loan losses allocated by loan class and activity in allowance for loan losses for years (Details 1) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		$ 990	[1]	$ 811
Charge Offs		0		(1)
Recoveries		0		0
Provisions		271		180
Ending Balance	[1]	1,261		990
Real estate loans: | Secured by one-to-four family residences
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		584	[1]	524
Charge Offs		0		0
Recoveries		0		0
Provisions		232		60
Ending Balance	[1]	816		584
Real estate loans: | Secured by multi-family residences
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		38	[1]	39
Charge Offs		0		0
Recoveries		0		0
Provisions		42		(1)
Ending Balance	[1]	80		38
Real estate loans: | Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		31	[1]	6
Charge Offs		0		0
Recoveries		0		0
Provisions		23		25
Ending Balance	[1]	54		31
Real estate loans: | Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		84	[1]	35
Charge Offs		0		0
Recoveries		0		0
Provisions		64		49
Ending Balance	[1]	148		84
Real estate loans: | Home equity lines of credit
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		112	[1]	101
Charge Offs		0		0
Recoveries		0		0
Provisions		(5)		11
Ending Balance	[1]	107		112
Other Loans Portfolio Segment | Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		28	[1]	11
Charge Offs		0		0
Recoveries		0		0
Provisions		19		17
Ending Balance	[1]	47		28
Other Unallocated
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance		113	[1]	95
Charge Offs		0		(1)
Recoveries		0		0
Provisions		(104)		19
Ending Balance	[1]	$ 9		$ 113

[1] All Loans are collectively evaluated for impairment.

XML

Loans - Risk category of loans by class (Details 2) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 263,973	$ 227,069
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	260,664	225,229
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	116	0
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,193	1,840
Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Secured by one-to-four family residences
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	206,894	188,573
Real estate loans: | Secured by one-to-four family residences | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	203,815	187,079
Real estate loans: | Secured by one-to-four family residences | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	116	0
Real estate loans: | Secured by one-to-four family residences | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,963	1,494
Real estate loans: | Secured by one-to-four family residences | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Secured by multi-family residences
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	10,650	5,103
Real estate loans: | Secured by multi-family residences | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	10,650	5,103
Real estate loans: | Secured by multi-family residences | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Secured by multi-family residences | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Secured by multi-family residences | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	10,750	6,134
Real estate loans: | Construction | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	10,750	6,134
Real estate loans: | Construction | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Construction | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Construction | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	14,803	8,440
Real estate loans: | Commercial real estate | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	14,803	8,440
Real estate loans: | Commercial real estate | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Commercial real estate | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Commercial real estate | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	17,127	16,797
Real estate loans: | Home equity lines of credit | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,897	16,498
Real estate loans: | Home equity lines of credit | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Real estate loans: | Home equity lines of credit | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	230	299
Real estate loans: | Home equity lines of credit | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Other Loans Portfolio Segment | Commercial & industrial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,679	1,947
Other Loans Portfolio Segment | Commercial & industrial loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,679	1,900
Other Loans Portfolio Segment | Commercial & industrial loans | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Other Loans Portfolio Segment | Commercial & industrial loans | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	47
Other Loans Portfolio Segment | Commercial & industrial loans | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Other Loans Portfolio Segment | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	70	75
Other Loans Portfolio Segment | Other loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	70	75
Other Loans Portfolio Segment | Other loans | Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Other Loans Portfolio Segment | Other loans | Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Other Loans Portfolio Segment | Other loans | Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 0	$ 0

XML

Loans - Analysis of age of loan delinquencies by type and by amount past due (Details 3) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 852	$ 136
Current	263,121	226,933
Total Loans Receivable	263,973	227,069
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	699	136
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	153	0
Real estate loans: | One- to four-family residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	852	89
Current	206,042	188,484
Total Loans Receivable	206,894	188,573
Real estate loans: | One- to four-family residential | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	699	89
Real estate loans: | One- to four-family residential | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | One- to four-family residential | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	153	0
Real estate loans: | Multi-family residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	10,650	5,103
Total Loans Receivable	10,650	5,103
Real estate loans: | Multi-family residential | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Multi-family residential | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Multi-family residential | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	10,750	6,134
Total Loans Receivable	10,750	6,134
Real estate loans: | Construction | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Construction | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Construction | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	14,803	8,440
Total Loans Receivable	14,803	8,440
Real estate loans: | Commercial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Commercial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Commercial | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Home equity lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	17,127	16,797
Total Loans Receivable	17,127	16,797
Real estate loans: | Home equity lines of credit | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Home equity lines of credit | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Real estate loans: | Home equity lines of credit | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Other Loans Portfolio Segment | Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	47
Current	3,679	1,900
Total Loans Receivable	3,679	1,947
Other Loans Portfolio Segment | Commercial and industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	47
Other Loans Portfolio Segment | Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Other Loans Portfolio Segment | Commercial and industrial | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Other Loans Portfolio Segment | Other loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	70	75
Total Loans Receivable	70	75
Other Loans Portfolio Segment | Other loans | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Other Loans Portfolio Segment | Other loans | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Other Loans Portfolio Segment | Other loans | Greater than 90 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 0	$ 0

XML

Loans (Detail Textuals) $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) Loan	Dec. 31, 2016 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 263,973	$ 227,069
Residential mortgage loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of nonaccrual loans | Loan	2
Financing receivable, recorded Investment, nonaccrual status	$ 153,000
Real estate loans: | Secured by one-to-four family residences
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 206,894	$ 188,573
Percentage of portfolio loans	78.30%	83.00%
Real estate loans: | Home equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 17,127	$ 16,797
Percentage of portfolio loans	6.50%	7.40%
Real estate loans: | Secured by multi-family residences
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 10,650	$ 5,103
Percentage of portfolio loans	4.00%	2.20%
Maximum adjustable rate loans term	20 years
Real estate loans: | Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 10,750	$ 6,134
Percentage of portfolio loans	4.10%	2.70%
Additional unadvanced portion of loans	$ 5,900	$ 5,000
Real estate loans: | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 14,803	$ 8,440
Percentage of portfolio loans	5.60%	3.70%
Maximum adjustable rate loans term	15 years
Maximum loan to value ratio	80.00%
Other Loans Portfolio Segment | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 3,679	$ 1,947
Percentage of portfolio loans	1.40%	0.90%
Other Loans Portfolio Segment | Other loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans	$ 70	$ 75
Percentage of portfolio loans	0.10%	0.10%

XML

Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 8,302	$ 7,983
Accumulated depreciation and amortization	(5,238)	(4,808)
Premises and equipment, net	3,064	3,175
Premises
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	4,946	4,355
Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 3,356	$ 3,628

XML

Premises and Equipment (Details 1) $ in Thousands	Dec. 31, 2017 USD ($)
Property, Plant and Equipment [Abstract]
2018	$ 449
2019	439
2020	390
2021	368
2022	307
Thereafter	1,626
Total	$ 3,579

XML

Premises and Equipment (Detail Textuals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Leases expense	$ 448,000
Operating leases, rent expense, net		$ 429,000

XML

Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Non-interest bearing	$ 8,385	$ 8,423
NOW accounts	31,807	29,725
Regular savings, tax escrow and demand clubs	25,413	26,655
Money market	37,772	30,123
Individual retirement accounts	7,069	6,975
Certificates of deposit	106,245	81,033
Total Deposits	$ 216,691	$ 182,934

XML

Deposits (Details 1) $ in Thousands	Dec. 31, 2017 USD ($)
Deposits [Abstract]
2018	$ 55,737
2019	31,514
2020	20,067
2021	4,136
2022	1,860
Individual retirement accounts and certificates of deposit	$ 113,314

XML

Deposits (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
NOW accounts	$ 89	$ 74
Regular savings and demand clubs	103	102
Money market	284	100
Individual retirement accounts	75	64
Certificates of deposit	1,260	1,096
Interest expense on deposits	$ 1,811	$ 1,436

XML

Deposits (Detail Textuals) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deposits [Abstract]
Time deposits, each with a minimum denomination of $250,000	$ 13,342,000	$ 7,746,000
Deposit insurance per account owner	$ 250,000

XML

Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Federal Home Loan Bank, Advances [Line Items]
Contractual maturities of borrowings with the FHLB	$ 64,447	$ 56,813
Advance Date 04/25/12
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	4/25/2017
Current Rate	1.03%
Contractual maturities of borrowings with the FHLB	$ 0	128
Advance Date 08/16/12
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	8/16/2017
Current Rate	1.00%
Contractual maturities of borrowings with the FHLB	$ 0	306
Advance Date 09/05/12
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	9/5/2019
Current Rate	1.13%
Contractual maturities of borrowings with the FHLB	$ 539	829
Advance Date 11/06/12
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	11/6/2017
Current Rate	0.86%
Contractual maturities of borrowings with the FHLB	$ 0	407
Advance Date 11/27/12
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	11/27/2017
Current Rate	1.12%
Contractual maturities of borrowings with the FHLB	$ 0	1,000
Advance Date 12/19/12
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	12/19/2019
Current Rate	1.20%
Contractual maturities of borrowings with the FHLB	$ 613	902
Advance Date 12/27/12
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	12/27/2017
Current Rate	0.89%
Contractual maturities of borrowings with the FHLB	$ 0	220
Advance Date 01/04/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/4/2019
Current Rate	1.52%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 01/15/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/16/2018
Current Rate	1.18%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 01/22/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/23/2017
Current Rate	0.96%
Contractual maturities of borrowings with the FHLB	$ 0	1,000
Advance Date 01/22/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/22/2018
Current Rate	1.20%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 01/22/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/22/2019
Current Rate	1.44%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 02/20/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	2/21/2020
Current Rate	1.28%
Contractual maturities of borrowings with the FHLB	$ 331	475
Advance Date 02/20/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	2/21/2023
Current Rate	1.77%
Contractual maturities of borrowings with the FHLB	$ 547	646
Advance Date 07/02/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	7/2/2018
Current Rate	1.35%
Contractual maturities of borrowings with the FHLB	$ 274	682
Advance Date 07/22/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	7/23/2018
Current Rate	1.27%
Contractual maturities of borrowings with the FHLB	$ 275	681
Advance Date 09/19/13
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	9/19/2018
Current Rate	1.37%
Contractual maturities of borrowings with the FHLB	$ 171	375
Advance Date 01/21/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/22/2018
Current Rate	1.72%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 01/21/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/22/2019
Current Rate	1.45%
Contractual maturities of borrowings with the FHLB	$ 240	442
Advance Date 03/20/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	3/20/2019
Current Rate	1.50%
Contractual maturities of borrowings with the FHLB	$ 411	714
Advance Date 03/24/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	3/24/2017
Current Rate	1.32%
Contractual maturities of borrowings with the FHLB	$ 0	1,500
Advance Date 07/21/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	7/21/2021
Current Rate	1.94%
Contractual maturities of borrowings with the FHLB	$ 541	682
Advance Date 07/21/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	7/22/2019
Current Rate	2.08%
Contractual maturities of borrowings with the FHLB	$ 500	500
Advance Date 07/21/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	7/23/2018
Current Rate	1.79%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 08/06/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	8/6/2018
Current Rate	1.80%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 08/21/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	8/21/2019
Current Rate	2.12%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 10/02/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	10/4/2021
Current Rate	2.00%
Contractual maturities of borrowings with the FHLB	$ 1,153	1,434
Advance Date 10/15/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	10/15/2021
Current Rate	1.69%
Contractual maturities of borrowings with the FHLB	$ 574	715
Advance Date 11/28/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	11/29/2021
Current Rate	1.90%
Contractual maturities of borrowings with the FHLB	$ 1,175	1,455
Advance Date 12/31/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	12/31/2019
Current Rate	1.63%
Contractual maturities of borrowings with the FHLB	$ 427	626
Advance Date 12/31/14
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/2/2018
Current Rate	1.52%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 01/14/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/14/2020
Current Rate	1.73%
Contractual maturities of borrowings with the FHLB	$ 1,500	1,500
Advance Date 01/21/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/21/2020
Current Rate	1.79%
Contractual maturities of borrowings with the FHLB	$ 500	500
Advance Date 01/21/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/21/2021
Current Rate	1.97%
Contractual maturities of borrowings with the FHLB	$ 500	500
Advance Date 04/13/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	4/13/2020
Current Rate	1.74%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 05/20/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	5/20/2020
Current Rate	1.52%
Contractual maturities of borrowings with the FHLB	$ 509	708
Advance Date 05/20/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	5/20/2022
Current Rate	1.91%
Contractual maturities of borrowings with the FHLB	$ 658	796
Advance Date 06/25/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	6/25/2020
Current Rate	1.65%
Contractual maturities of borrowings with the FHLB	$ 527	725
Advance Date 06/25/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	6/26/2017
Current Rate	1.14%
Contractual maturities of borrowings with the FHLB	$ 0	1,000
Advance Date 10/29/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	10/29/2020
Current Rate	1.51%
Contractual maturities of borrowings with the FHLB	$ 1,185	1,579
Advance Date 10/29/15
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	10/29/2020
Current Rate	1.90%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 01/27/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/27/2021
Current Rate	1.92%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 01/27/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/27/2023
Current Rate	1.87%
Contractual maturities of borrowings with the FHLB	$ 751	888
Advance Date 02/12/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	2/13/2023
Current Rate	1.66%
Contractual maturities of borrowings with the FHLB	$ 761	898
Advance Date 02/12/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	2/13/2023
Current Rate	2.04%
Contractual maturities of borrowings with the FHLB	$ 500	500
Advance Date 08/24/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	8/24/2017
Current Rate	1.01%
Contractual maturities of borrowings with the FHLB	$ 0	1,000
Advance Date 08/24/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	8/24/2018
Current Rate	1.22%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 09/21/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	3/21/2017
Current Rate	0.83%
Contractual maturities of borrowings with the FHLB	$ 0	1,000
Advance Date 09/21/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	9/21/2017
Current Rate	1.06%
Contractual maturities of borrowings with the FHLB	$ 0	2,000
Advance Date 09/30/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	3/30/2017
Current Rate	0.79%
Contractual maturities of borrowings with the FHLB	$ 0	1,000
Advance Date 10/28/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	10/28/2020
Current Rate	1.57%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 11/04/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	11/4/2021
Current Rate	1.72%
Contractual maturities of borrowings with the FHLB	$ 2,000	2,000
Advance Date 11/17/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	11/17/2021
Current Rate	2.13%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 11/17/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	11/17/2021
Current Rate	1.78%
Contractual maturities of borrowings with the FHLB	$ 807	1,000
Advance Date 11/17/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	11/17/2023
Current Rate	2.07%
Contractual maturities of borrowings with the FHLB	$ 866	1,000
Advance Date 11/28/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	11/29/2019
Current Rate	1.78%
Contractual maturities of borrowings with the FHLB	$ 1,500	1,500
Advance Date 12/08/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	12/8/2017
Current Rate	1.22%
Contractual maturities of borrowings with the FHLB	$ 0	1,000
Advance Date 12/21/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	6/21/2017
Current Rate	0.95%
Contractual maturities of borrowings with the FHLB	$ 0	1,000
Advance Date 12/21/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	12/23/2019
Current Rate	1.91%
Contractual maturities of borrowings with the FHLB	$ 1,000	1,000
Advance Date 12/30/16
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/3/2017
Current Rate	0.74%
Contractual maturities of borrowings with the FHLB	$ 0	3,000
Advance Date 01/04/17
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/4/2019
Current Rate	1.62%
Contractual maturities of borrowings with the FHLB	$ 1,500	0
Advance Date 01/19/17
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/21/2020
Current Rate	1.91%
Contractual maturities of borrowings with the FHLB	$ 1,000	0
Advance Date 3/24/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	3/24/2022
Current Rate	2.00%
Contractual maturities of borrowings with the FHLB	$ 1,309	0
Advance Date 3/24/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	3/25/2024
Current Rate	2.28%
Contractual maturities of borrowings with the FHLB	$ 1,367	0
Advance Date 7/24/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	7/24/2020
Current Rate	1.88%
Contractual maturities of borrowings with the FHLB	$ 1,000	0
Advance Date 7/24/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	7/26/2021
Current Rate	2.03%
Contractual maturities of borrowings with the FHLB	$ 1,000	0
Advance Date 7/24/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	7/25/2022
Current Rate	1.94%
Contractual maturities of borrowings with the FHLB	$ 936	0
Advance Date 8/31/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	8/31/2018
Current Rate	1.55%
Contractual maturities of borrowings with the FHLB	$ 1,000	0
Advance Date 8/31/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	8/31/2021
Current Rate	1.96%
Contractual maturities of borrowings with the FHLB	$ 1,000	0
Advance Date 9/11/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	9/11/2020
Current Rate	1.80%
Contractual maturities of borrowings with the FHLB	$ 1,000	0
Advance Date 9/11/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	9/12/2022
Current Rate	2.07%
Contractual maturities of borrowings with the FHLB	$ 1,500	0
Advance Date 9/27/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	9/27/2018
Current Rate	1.66%
Contractual maturities of borrowings with the FHLB	$ 1,500	0
Advance Date 9/27/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	9/27/2022
Current Rate	2.28%
Contractual maturities of borrowings with the FHLB	$ 1,000	0
Advance Date 10/04/17
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	4/4/2018
Current Rate	1.50%
Contractual maturities of borrowings with the FHLB	$ 1,500	0
Advance Date 11/27/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	5/29/2018
Current Rate	1.76%
Contractual maturities of borrowings with the FHLB	$ 3,500	0
Advance Date 12/4/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	3/5/2018
Current Rate	1.59%
Contractual maturities of borrowings with the FHLB	$ 1,500	0
Advance Date 12/8/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	4/9/2018
Current Rate	1.64%
Contractual maturities of borrowings with the FHLB	$ 1,000	0
Advance Date 12/11/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/11/2018
Current Rate	1.55%
Contractual maturities of borrowings with the FHLB	$ 1,500	0
Advance Date 12/11/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	3/12/2018
Current Rate	1.61%
Contractual maturities of borrowings with the FHLB	$ 1,500	0
Advance Date 12/29/2017
Federal Home Loan Bank, Advances [Line Items]
Maturity Date	1/2/2018
Current Rate	1.53%
Contractual maturities of borrowings with the FHLB	$ 2,500	$ 0

XML

Borrowings (Details 1) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Contractual Maturity
2018	$ 23,220
2019	9,730
2020	10,553
2021	10,750
2022	5,403
Thereafter	4,791
Total	$ 64,447	$ 56,813
Weighted Average Rate
2018	1.57%
2019	1.66%
2020	1.72%
2021	1.90%
2022	2.05%
Thereafter	2.00%
Total	1.73%

XML

Borrowings (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Disclosure [Abstract]
Residential mortgages carrying amount	$ 190,382,000	$ 165,546,000
Residential mortgages available for borrowings	101,788,000	$ 90,868,000
Repurchase agreement additional liquidity	10,000,000
Repurchase agreement additional liquidity of unsecured line of credit	$ 5,000,000

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Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Current
Federal	$ 279	$ 439
State	4	4
Deferred	160	(116)
Income Tax Expense (Benefit)	$ 448	$ 328

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Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Federal Tax at a Statutory rate	$ 252	$ 431
Federal Tax at a Statutory rate, % of Pre-tax Income	34.00%	34.00%
State taxes, net of Federal provision	$ (108)	$ 119
State taxes, net of Federal provision, % of Pre-tax Income	(15.00%)	9.00%
Change in tax rate	$ 228
Change in tax rate, % of Pre-tax Income	31.00%
Change in valuation allowance	$ 106	$ (178)
Change in valuation allowance, % of Pre-tax Income	14.00%	(14.00%)
Nontaxable interest and dividend income	$ (42)	$ (44)
Nontaxable interest and dividend income, % of Pre-tax Income	(6.00%)	(3.00%)
Other items	$ 12
Other items, % of Pre-tax Income	3.00%
Income tax provision	$ 448	$ 328
Income tax provision, % of Pre-tax Income	61.00%	26.00%

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Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Deferred tax assets:
Deferred loan origination fees	$ 92	$ 95
Allowance for loan losses - Federal	330	379
State tax credits	1,075	1,102
Depreciation	0	64
Supplemental Executive Retirement Plan	208	290
Unrealized loss on securities available for sale and transferred to held to maturity	44	43
Net operating loss	270	159
Stock compensation	14	0
Other	1	0
Total deferred tax assets, gross	2,034	2,132
Valuation allowance	(1,424)	(1,318)
Total deferred tax assets, net of valuation allowance	610	814
Deferred tax liabilities:
Depreciation	(9)	0
Mortgage servicing rights	(233)	(308)
Total deferred tax liabilities	(242)	(308)
Net deferred tax asset	$ 368	$ 506

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Income Taxes (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Note [Line Items]
Percentage of effective tax rate	34.00%	34.00%
Corporate federal income tax rate	21.00%
Net adjustment in income tax expense	$ 228,000
Statutory federal income tax rate	61.00%	26.00%
Amount of valuation allowance against allowance for loan loss	$ 88,000
Amount of valuation allowance that should be reversed		$ 44,000	$ 44,000
Deferred tax liability not recognized with respect to Federal base year reserve	1,518,000		$ 1,518,000
Deferred tax liability, unrecognized, federal base year reserve	$ 319,000
Maximum
Income Tax Note [Line Items]
Percentage of effective tax rate	35.00%

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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Unrealized Gains and Losses on Available-for-Sale Securities, Beginning balance	$ (85)	$ (4)
Unrealized Gains and Losses on Available-for-Sale Securities, Other comprehensive (loss) income before reclassifications	(80)	(57)
Unrealized gains and losses on available - for - sale securities, Amounts reclassified from AOCI		(24)
Unrealized Gains and Losses on Available-for-Sale Securities, Ending balance	(165)	(85)
Unrealized Loss on Securities Transferred to Held-to-Maturity, Beginning balance	0	(208)
Unrealized Loss on Securities Transferred to Held-to-Maturity, Other comprehensive income before reclassifications		208
Unrealized Losses on Securities Transferred to Held to Maturity, Amounts reclassified from AOCI		0
Unrealized Loss on Securities Transferred to Held-to-Maturity, Ending balance		0
Accumulated Other Comprehensive Income (Loss), Net of Tax, Beginning Balance	(85)	(212)
Other comprehensive (loss) income before reclassifications	(80)	151
Amounts reclassified from AOCI		(24)
Accumulated Other Comprehensive Income (Loss), Net of Tax, Ending Balance	$ (165)	$ (85)

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Accumulated Other Comprehensive Income (Loss) (Details 1) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Comprehensive Income Loss Note [Abstract]
Realized gain on sale of securities - Available for sale securities	$ 24
Realized gain on sale of securities - Held to maturity securities	12
Provision for Income Taxes	(12)
Net Income	$ 24

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Employee Benefit Plans (Details) - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Options
Outstanding at beginning of year	0	0
Grants	152,080	0
Exercised	0	0
Outstanding at year end	152,080	0
Exercisable at year end	0	0
Weighted Average Exercise Price Per Share
Outstanding at beginning of year	$ 0	$ 0
Grants	16.72	0
Exercised	0	0
Outstanding at year end	16.72	0
Exercisable at year end	$ 0	$ 0

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Employee Benefit Plans (Detail Textuals)	1 Months Ended	12 Months Ended
	Aug. 29, 2017 Director shares	Dec. 31, 2017 USD ($) Executive shares	Dec. 31, 2016 USD ($) Executive shares
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Description of defined contribution pension		Employees are eligible for participation in the 401(k) Plan after one year of service and attaining age 21. The 401(k) Plan allows employees to contribute 1% to 100% of their annual salary subject to statutory limitations. Matching contributions made by the Bank are 100% of the first 6% of compensation that an employee contributes to the 401(k) Plan.
Matching contributions made by the Bank			100.00%
Matching contributions made by employees		$ 225,000	$ 189,000
Discretionary contributions made		85,000	$ 77,000
ESOP borrowed to purchase shares		$ 700,000
Number of shares purchased | shares		69,972
Employee stock ownership plan debt structure description		The loan is being repaid in twenty equal annual installments through 2026. The loan bears interest at the prime rate.
Total shares released to participants | shares		3,808	3,808
Expense related to ESOP		$ 52,000	$ 44,000
Number of unearned ESOP shares		34,271
Aggregate market value of unearned ESOP shares.		$ 582,607
2017 Equity Incentive Plan | Restricted stock awards
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of shares authorized for award | shares	77,668
Award vesting period	5 years
Award vesting percentage per year	20.00%
2017 Equity Incentive Plan | Directors | Restricted stock awards
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of restricted stock awards granted | shares	21,380
Number of external directors | Director	11
2017 Equity Incentive Plan | Executive officers | Restricted stock awards
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of restricted stock awards granted | shares	41,320
Supplemental executive retirement plan (SERP)
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of executive under supplemental executive retirement plan (SERP) | Executive		2	2
Contribution recorded under supplemental executive retirement plan (SERP)		$ 797,000	$ 759,000
Total expense under the SERP		$ 38,000	$ 138,000

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Employee Benefit Plans (Detail Textuals 2) - USD ($)		1 Months Ended	12 Months Ended
	Oct. 02, 2017	Oct. 30, 2017	Dec. 31, 2017	Dec. 31, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of options granted			152,080	0
Stock options exercise price			$ 0	$ 0
Compensation expense			$ 132,000
Expected compensation expense in 2018 through 2022			$ 269,000
Stock - based compensation plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of shares authorized for options			194,168
Number of options granted	152,080	152,080
Stock options exercise price	$ 16.72	$ 16.69
Stock options term	10 years	10 years
Stock options vesting period	5 years	5 years

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Related Party Transactions (Detail Textuals) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Related Party Transactions [Abstract]
Loans outstanding with related parties	$ 560,000	$ 596,000
Repayment of loans	$ 36,000

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Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amount of financial instrument	$ 35,865	$ 37,795
Commitments to grant loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amount of financial instrument	12,397	15,199
Unadvanced portion of construction loans
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amount of financial instrument	5,945	5,009
Unfunded commitments under lines of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Contractual amount of financial instrument	$ 17,523	$ 17,587

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Commitments (Detail Textuals)	12 Months Ended
	Dec. 31, 2017 USD ($) Facility	Dec. 31, 2016 USD ($) Facility
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Loan amount	$ 10,836,000
Number of commercial letters of credit | Facility	2	2
Commercial letters of credit	$ 414,000	$ 110,000
Minimum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Interest rate during period	3.25%
Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Interest rate during period	5.25%

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Regulatory Matters (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Banking and Thrift [Abstract]
Total Core Capital (to Risk- Weighted Assets), Actual amount	$ 30,230	$ 29,264
Total Core Capital (to Risk- Weighted Assets), Actual ratio	16.18%	18.45%
Total Core Capital (to Risk- Weighted Assets), For capital adequacy purposes amount	$ 14,946	$ 12,689
Total Core Capital (to Risk- Weighted Assets), For capital adequacy purposes ratio	8.00%	8.00%
Total Core Capital (to Risk- Weighted Assets), To be well capitalized under prompt corrective action provisions amount	$ 18,683	$ 15,861
Total Core Capital (to Risk- Weighted Assets), To be well capitalized under prompt corrective action provisions ratio	10.00%	10.00%
Total Core Capital (to Risk- Weighted Assets), Well capitalized with buffer	$ 19,617	$ 16,654
Total Core Capital (to Risk- Weighted Assets), Well capitalized with buffer ratio	10.50%	10.50%
Tier 1 Capital (to Risk-Weighted Assets), Actual amount	$ 28,969	$ 28,274
Tier 1 Capital (to Risk-Weighted Assets), Actual ratio	15.51%	17.83%
Tier 1 Capital (to Risk-Weighted Assets), For capital adequacy purposes amount	$ 11,210	$ 9,516
Tier 1 Capital (to Risk-Weighted Assets), For capital adequacy purposes ratio	6.00%	6.00%
Tier 1 Capital (to Risk-Weighted Assets), To be well capitalized under prompt corrective action provisions amount	$ 14,946	$ 12,689
Tier 1 Capital (to Risk-Weighted Assets), To be well capitalized under prompt corrective action provisions ratio	8.00%	8.00%
Tier 1 Capital (to Risk-Weighted Assets), Well capitalized with buffer	$ 15,881	$ 13,482
Tier 1 Capital (to Risk-Weighted Assets), Well capitalized with buffer ratio	8.50%	8.50%
Tier 1 Common Equity (to Risk-Weighted Assets), Actual amount	$ 28,969	$ 28,274
Tier 1 Common Equity (to Risk-Weighted Assets), Actual ratio	15.51%	17.83%
Tier 1 Common Equity (to Risk-Weighted Assets), For Capital Adequacy Purposes	$ 8,407	$ 7,137
Tier 1 Common Equity (to Risk-Weighted Assets), For capital adequacy purposes ratio	4.50%	4.50%
Tier 1 Common Equity (to Risk-Weighted Assets), To Be Well Capitalized Under Prompt Corrective Action Provisions	$ 12,144	$ 10,309
Tier 1 Common Equity (to Risk-Weighted Assets), To be well capitalized under prompt corrective action provisions ratio	6.50%	6.50%
Tier 1 Common Equity (to Risk-Weighted Assets), For well capitalized buffer	$ 13,078	$ 11,102
Tier 1 Common Equity (to Risk-Weighted Assets), For well capitalized buffer ratio	7.00%	7.00%
Tier 1 Capital (to Assets), Actual amount	$ 28,969	$ 28,274
Tier 1 Capital (to Assets), Actual ratio	9.51%	10.70%
Tier 1 Capital (to Assets), For adequacy purpose	$ 12,183	$ 10,572
Tier 1 Capital (to Assets), For adequacy purpose ratio	4.00%	4.00%
Tier 1 Capital (to Assets), To be well capitalized	$ 15,229	$ 13,214
Tier 1 Capital (to Assets), To well capitalized ratio	5.00%	5.00%
Tier 1 Capital (to Assets), To well capitalized with buffer	$ 15,229	$ 13,214
Tier 1 Capital (to Assets), To well capitalized with buffer ratio	5.00%	5.00%

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Fair Value Measurements - Fair value on a recurring basis, the fair value measurements by level within the fair value hierarchy (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Available-for-Sale Portfolio
Securities available for sale	$ 18,313	$ 17,747
Level 2 | Total Fair Value
Available-for-Sale Portfolio
Securities available for sale	18,313	17,747
Fair Value, Measurements, Recurring | Total Fair Value
Available-for-Sale Portfolio
Securities available for sale	18,313	17,747
Fair Value, Measurements, Recurring | Total Fair Value | U.S. Government and agency obligations
Available-for-Sale Portfolio
Securities available for sale	10,470	7,999
Fair Value, Measurements, Recurring | Total Fair Value | Mortgage-backed securities - residential
Available-for-Sale Portfolio
Securities available for sale	7,843	9,748
Fair Value, Measurements, Recurring | Level 1
Available-for-Sale Portfolio
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | U.S. Government and agency obligations
Available-for-Sale Portfolio
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 1 | Mortgage-backed securities - residential
Available-for-Sale Portfolio
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 2
Available-for-Sale Portfolio
Securities available for sale	18,313	17,747
Fair Value, Measurements, Recurring | Level 2 | U.S. Government and agency obligations
Available-for-Sale Portfolio
Securities available for sale	10,470	7,999
Fair Value, Measurements, Recurring | Level 2 | Mortgage-backed securities - residential
Available-for-Sale Portfolio
Securities available for sale	7,843	9,748
Fair Value, Measurements, Recurring | Level 3
Available-for-Sale Portfolio
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | U.S. Government and agency obligations
Available-for-Sale Portfolio
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Level 3 | Mortgage-backed securities - residential
Available-for-Sale Portfolio
Securities available for sale	$ 0	$ 0

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Fair Value Measurements - Carrying amounts and estimated fair values of the financial instruments (Details 1) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financial assets:
Interest bearing demand deposits	$ 8,725	$ 5,773
Securities available for sale	18,313	17,747
Securities held to maturity	6,575	7,420
Investment in restricted stock	3,270	2,886
Financial liabilities:
Deposits	216,691	182,934
Carrying Amount | Level 1
Financial assets:
Cash and due from banks	1,672	1,634
Interest bearing demand deposits	8,725	5,773
Accrued interest receivable	824	652
Financial liabilities:
Deposits	216,691	182,934
Accrued interest payable	94	71
Carrying Amount | Level 2
Financial assets:
Securities available for sale	18,313	17,747
Securities held to maturity	6,575	7,420
Investment in restricted stock	3,270	2,886
Loans held for sale	2,770	2,059
Financial liabilities:
Deposits	216,691	182,934
Borrowings	64,447	56,813
Carrying Amount | Level 3
Financial assets:
Loans, net	262,711	226,192
Fair Value | Level 1
Financial assets:
Cash and due from banks	1,672	1,634
Interest bearing demand deposits	8,725	5,773
Accrued interest receivable	824	652
Financial liabilities:
Deposits	216,878	182,969
Accrued interest payable	94	71
Fair Value | Level 2
Financial assets:
Securities available for sale	18,313	17,747
Securities held to maturity	6,588	7,384
Investment in restricted stock	3,270	2,886
Loans held for sale	2,770	2,059
Financial liabilities:
Deposits	216,878	182,969
Borrowings	64,502	57,008
Fair Value | Level 3
Financial assets:
Loans, net	$ 261,588	$ 225,569

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FSB Bancorp, Inc. (Parent Company Only) Financial Information (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 10,397	$ 7,407	$ 6,147
Total Assets	314,630	273,721
Liabilities and Stockholders' Equity
Total Liabilities	283,411	241,862
Stockholders' Equity	31,219	31,859	21,760
Total Liabilities and Stockholders' Equity	314,630	273,721
Parent company
Assets
Cash and cash equivalents	1,717	2,881	$ 265
Investment in banking subsidiary	29,171	28,610
ESOP loan receivable	365	398
Total Assets	31,253	31,889
Liabilities and Stockholders' Equity
Total Liabilities	34	30
Stockholders' Equity	31,219	31,859
Total Liabilities and Stockholders' Equity	$ 31,253	$ 31,889

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FSB Bancorp, Inc. (Parent Company Only) Financial Information (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Interest Income	$ 10,157	$ 8,724
Net Income	290	938
Parent company
Income Statement [Abstract]
Interest Income	29	20
Other Expense	(301)	(89)
Equity in undistributed earnings of banking subsidiary	562	1,007
Net Income	$ 290	$ 938

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FSB Bancorp, Inc. (Parent Company Only) Financial Information (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Net income	$ 290	$ 938
Adjustments to reconcile net income to net cash flows from operating activities:
Stock based compensation	133
Decrease in accrued interest receivable	172	(3)
Net increase in other liabilities	(585)	675
Net cash flows from operating activities	(256)	3,562
Cash flows from investing activities
Proceeds from maturities and calls of securities available-for-sale	1,250	7,334
Net cash flows from investing activities	(37,827)	(18,590)
Cash flows from financing activities
Proceeds from stock conversion and offering		8,990
Effect of stock repurchase plan	(1,062)
Net cash flows from financing activities	41,073	16,288
Net (decrease) increase in cash and cash equivalents	2,990	1,260
Cash and Cash Equivalents - Beginning	7,407	6,147
Cash and Cash Equivalents - Ending	10,397	7,407
Parent company
Cash flows from operating activities
Net income	290	938
Adjustments to reconcile net income to net cash flows from operating activities:
Equity in undistributed earnings of banking subsidiary	(562)	(1,007)
Stock based compensation	133
Decrease in accrued interest receivable		8
Net increase in other liabilities	4
Net cash flows from operating activities	(135)	(61)
Cash flows from investing activities
Proceeds to banking subsidiary		(7,300)
Proceeds from maturities and calls of securities available-for-sale		1,000
Payments received on ESOP loan	33	33
Net cash flows from investing activities	33	(6,267)
Cash flows from financing activities
Proceeds from stock conversion and offering		8,944
Effect of stock repurchase plan	(1,062)
Net cash flows from financing activities	(1,062)	8,944
Net (decrease) increase in cash and cash equivalents	(1,164)	2,616
Cash and Cash Equivalents - Beginning	2,881	265
Cash and Cash Equivalents - Ending	$ 1,717	$ 2,881