Use these links to rapidly review the document
TABLE OF CONTENTS

As filed with the Securities and Exchange Commission on October 14,November 3, 2009

Registration No. 333-161955

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549



PRE-EFFECTIVE
AMENDMENT NO. 12
TO THE
FORM S-1
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933



EMCLAIRE FINANCIAL CORP.
(Exact name of registrant as specified in charter)

Pennsylvania
(State or other jurisdiction of
incorporation or organization)
 6021
(Primary Standard Industrial
Code Number)
 25-1606091
(I.R.S. Employer
Identification No.)

612 Main Street, Emlenton, Pennsylvania 16373
(724) 867-2311

(Address, including zip code, and telephone number, including
area code, of registrant's principal executive offices)

William C. Marsh
Chairman of the Board, President and Chief Executive Officer
Emclaire Financial Corp.
612 Main Street, Emlenton, Pennsylvania 16373
(724) 867-2311
(Name, address, including zip code, and telephone number, including area code, of agent for service)

Please send copies of all communications to:

Kevin M. Houlihan, Esq.
Jonathan C. Pavony, Esq.
Patton Boggs LLP

2550 M Street, NW
Washington, D.C. 20037
(202) 457-6000
 Brendan P. Head, Esq.
Michael P. Reed, Esq.
DLA Piper LLP(US)LLP (US)

500 Eighth Street, NW
Washington, D.C. 20004
(202) 799-4000

         Approximate date of commencement of proposed sale to the public:As soon as practicable after this registration statement becomes effective.

         If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933 check the following box.    o

         If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.    o

         If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.    o

         If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration number of the earlier effective registration statement for the same offering.    o

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

Large accelerated filer o Accelerated filer o Non-accelerated filer o
(Do not check if a smaller reporting company)
 Smaller reporting company ý

Calculation of Registration Fee

Title of Each Class of
Securities to be Registered

 Proposed Maximum
Aggregate Offering
Price(1)(2)

 Amount of
Registration Fee(3)

 Proposed Maximum
Aggregate Offering
Price(1)(2)

 Amount of
Registration Fee(3)

Common Stock, par value $1.25 per share $21,000,000 $1,171.80 $23,000,000 $1,283.40
(1)
Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(o) under the Securities Act of 1933.

(2)
Includes offering price of shares that the underwriters have the option to purchase to cover over-allotments, if any.

(3)
The registrant previously paid $1,171.80 of the Registration Fee has been previously paid.Fee.

         The registrant hereby amends this registration statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment which specifically states that this registration statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until this registration statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.


The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell securities and is not soliciting an offer to buy these securities in any state or jurisdiction where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED OCTOBER 14,NOVEMBER 3, 2009

PRELIMINARY PROSPECTUS

1,250,000 Shares

GRAPHIC

Common Stock

        We are offering shares of our common stock, $1.25 par value per share. Currently, our common stock is currently quoted on the OTC Bulletin Board under the symbol "EMCF." On ,November 2, 2009, the last reported sales price of our common stock was $$16.00 per share. We have appliedreceived approval to havelist our common stock listed on the NASDAQ Capital Market under the symbol "EMCF." We expect that our common stock will begin trading on the NASDAQ Capital Market starting on November 6, 2009.

        Investing in our common stock involves risks. Please carefully read the "Risk Factors" beginning on page 89 of this prospectus for a discussion of certain factors that you should consider before making your investment decision.

 
 Per share
 Total

Price to public

 $ $

Underwriting discount

 $ $

Proceeds to us, before expenses

 $ $

        We have granted the underwriters a 30 day option to purchase up to 187,500 additional shares of common stock at the same price, and on the same terms, solely to cover over-allotments, if any.

        Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.

        These shares of common stock are not deposits, savings accounts, or other obligations of our bank subsidiary or any of our non-bank subsidiaries and are not insured by the Federal Deposit Insurance Corporation or any other governmental agency.

        The underwriters expect to deliver the common stock to purchasers against payment in New York, New York on or about                                    , 2009, subject to customary closing conditions.



GRAPHICS A N D L E R    O ' N E I L L  +   P A R T N E R S,   L . P .

GRAPHICB O E N N I N G   &  S C A T T E R G O O D ,   I N C .



The date of this prospectus is                          , 2009


Table of Contents


TABLE OF CONTENTS

 
 Page

Cautionary Statement About Forward Looking Statements

 ii

About This Prospectus

 iii

Prospectus Summary

 1

Selected Consolidated Financial Data of Emclaire

 6

Risk Factors

 89

Use of Proceeds

 1617

Capitalization

 1617

Market for Common Stock and Dividend Policy

 1718

Description of Emclaire Capital Stock

 1920

Underwriting

 2728

Legal Matters

 3031

Experts

 3031

Where You Can Find Additional Information

 3032

Incorporation of Certain Information by Reference

 3132

i


Table of Contents


CAUTIONARY STATEMENT ABOUT FORWARD LOOKING STATEMENTS

        This prospectus contains forward looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Securities Exchange Act of 1934, as amended, or the Exchange Act. These forward looking statements represent plans, estimates, objectives, goals, guidelines, expectations, intentions, projections and statements of our beliefs concerning future events, business plans, objectives, expected operating results and the assumptions upon which those statements are based. Forward looking statements include without limitation, any statement that may predict, forecast, indicate or imply future results, performance or achievements, and are typically identified with words such as "may," "could," "should," "will," "would," "believe," "anticipate," "estimate," "expect," "intend," "plan," or words or phases of similar meaning. We caution that the forward looking statements are based largely on our expectations and are subject to a number of known and unknown risks and uncertainties that are subject to change based on factors which are, in many instances, beyond our control. Actual results, performance or achievements could differ materially from those contemplated, expressed, or implied by the forward looking statements.

        The following factors, among others, could cause our financial performance to differ materially from that expressed in such forward looking statements:

ii


Table of Contents

        If one or more of the factors affecting our forward looking information and statements proves incorrect, then our actual results, performance or achievements could differ materially from those expressed in, or implied by, forward looking information and statements contained in this prospectus. Therefore, we caution you not to place undue reliance on our forward looking information and statements. Except as required by applicable law or regulation, we will not update the forward looking statements to reflect actual results or changes in the factors affecting the forward looking statements.


ABOUT THIS PROSPECTUS

        You should rely only on the information contained or incorporated by reference in this prospectus. We have not, and the underwriters have not, authorized any other person to provide you with different or inconsistent information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriters are not, making an offer to sell our securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in this prospectus and the documents incorporated by reference is accurate only as of their respective dates. Our business, financial condition, results of operations, and prospects may have changed since those dates.

        Unless otherwise stated in this prospectus, references to "we," "us," "our," "Emclaire," the "Company," or the "Corporation" refer to Emclaire Financial Corp. and our wholly-ownedwholly owned subsidiaries, and references to the "Bank" refer to The Farmers National Bank of Emlenton, our wholly owned subsidiary.

iii


Table of Contents


PROSPECTUS SUMMARY

        This summary highlights selected information elsewhere or incorporated by reference in this prospectus and may not contain all the information that you need to consider in making your investment decision. You should carefully read this entire prospectus, as well as the information to which we refer you and the information incorporated by reference herein, before deciding whether to invest in theour common stock. You should pay special attention to the "Risk Factors" section of this prospectus to determine whether an investment in the common stock is appropriate for you.

Company Overview

        We are a Pennsylvania corporation and financial holding company that provides a full range of retail and commercial financial products and services to customers in western Pennsylvania through our wholly owned subsidiary bank, The Farmers National Bank of Emlenton. The Bank also provides investment advisory services through its Farmers National Financial Services division.

        We have appliedreceived approval to havelist our common stock listed on the NASDAQ Capital Market under the symbol "EMCF." We expect that our common stock will begin trading on the NASDAQ Capital Market starting on November 6, 2009. Currently, our common stock is quoted on the OTC Bulletin Board under the symbol "EMCF." As of October 7,November 2, 2009, there were 1,431,404 shares of our common stock outstanding.

        The Bank was organized in 1900 as a national banking association and is a financial intermediary whose principal business consists of attracting deposits from the general public and investing such funds in real estate loans secured by liens on residential and commercial property, consumer loans, commercial business loans, marketable securities and interest-earning deposits. The Bank operates through a network of 13 retail branch offices in Venango, Butler, Clarion, Clearfield, Crawford, Elk, Jefferson and Mercer counties, Pennsylvania. The Company and the Bank are headquartered in Emlenton, Pennsylvania.

        We are a registered financial holding company pursuant to the Bank Holding Company Act of 1956, as amended, or the BHCA. We are subject to regulation and examination by the Federal Reserve Board, or the FRB, under the BHCA. The Bank is subject to examination and comprehensive regulation by the Office of the Comptroller of the Currency, or the OCC, which is the Bank's chartering authority, and the Federal Deposit Insurance Corporation, or the FDIC, which insures customer deposits held by the Bank to the full extent provided by law. The Bank is a member of the Federal Reserve Bank of Cleveland and the Federal Home Loan Bank of Pittsburgh.

        At JuneSeptember 30, 2009 we had $390.6$459.3 million in total assets, $35.7$37.5 million in stockholders' equity, $268.3$298.6 million in net loans receivable and $291.9$378.1 million in deposits.

        Our principal executive office is located at 612 Main Street, Emlenton, Pennsylvania 16373 and our telephone number is (724) 867-2311. Our internet address ishttp://www.farmersnb.com. The reference to our website does not constitute incorporation by reference of the information contained on the website, which should not be considered part of this prospectus.

Acquisitions

        On August 28, 2009, the Bank completed the purchase of a former National City Bank full service branch office in Titusville, Pennsylvania. Through the acquisition of this office the Bank assumed $90.0$90.8 million in deposits in exchange for $32.7$32.6 million in loans, $53.8$54.9 million in net cash and certain fixed assets of the office. On a pro forma basis considering this branch purchase, the Company has total assets, deposits and loans of $480.6, $381.9 and $301.0, respectively.

        On October 17, 2008, we completed an acquisition of Elk County Savings and Loan Association, a Pennsylvania-chartered savings association, or the Association, located in Ridgway, Pennsylvania. The


Table of Contents

Association converted from a mutual to stock form of organization and immediately issued all of its


Table of Contents


capital stock to the Company and merged with the Bank. In connection with the acquisition, we issued 163,569 shares of our common stock resulting in net capital proceeds of $3.5 million. Through this acquisition, the Bank added $7.3 million in loans, $6.2 million in deposits and realized additional capital from the Association of approximately $1.0 million.

Our Strategy

        Our goal is to continue to expand our banking and financial services franchise, organically and through opportunistic acquisitions, while maintaining sound asset quality, sensible risk-management practices and profitable operations in order to provide quality returns to our shareholders. The Bank is a well-positioned community bank that services the growing northern suburbs of Pittsburgh, Pennsylvania and rural counties in the adjacent western Pennsylvania region. While positioned for growth in the larger Pittsburgh market, we maintain longstanding ties with our loyal rural customer base and provide unique community-based banking services to an otherwise underserviced market. In many of our markets, we are the only bank in town. As a result, we have a stable and attractive funding base that has supported and is expected to support the profitable growth of our consumer and commercial lending activities and business banking activities in all of the markets that we serve. Our strategy is and has been successful and we can continue to be successful by targeting the following key elements:


Table of Contents