8-K

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

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the
Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):  April 17, 2009

SOUTHERN MICHIGAN BANCORP, INC.
(Exact Name of Registrant as
Specified in Charter)

Michigan
(State or Other Jurisdiction
of Incorporation) 000-49722
(Commission
File Number) 38-2407501
(IRS Employer
Identification No.)

51 West Pearl Street
Coldwater, Michigan
(Address of Principal Executive Offices)
49036
(Zip Code)

Registrant's telephone number,
including area code:  (517) 279-5500

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the Registrant under any of the following provisions:

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425).

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12).

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)).

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)).

Item 7.01. Regulation FD Disclosure.

          On April 17, 2009, Southern Michigan Bancorp, Inc. issued the press release furnished with this report as Exhibit 99.1, which is here incorporated by reference This Report and the Exhibit are furnished to, and not filed with, the Commission.

Forward-Looking Statements

          The press release contains forward-looking statements that are based on management's beliefs, assumptions, current expectations, estimates and projections about the financial services industry, the economy, and Southern Michigan Bancorp, Inc. Forward-looking statements are identifiable by words or phrases such as that an event or trend "will" occur or that Southern Michigan Bancorp, Inc. or its management "intends" that a particular result or event will or "should" occur, or other words or phrases such as "still", and variations of such words and similar expressions. Southern's ability to reduce expenses, eliminate duplicate services, and improve operating efficiencies after completion of the charter consolidation is not assured. The future effect of changes in the financial and credit markets and the national and regional economy on the banking industry, generally, and Southern Michigan Bancorp, Inc., specifically, are also inherently uncertain. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions ("risk factors") that are difficult to predict with regard to timing, extent, likelihood and degree of occurrence. Therefore, actual results and outcomes may materially differ from what may be expressed or forecasted in such forward-looking statements. Risk factors include, but are not limited to, the risk factors described in "Item 1A - Risk Factors" of Southern Michigan Bancorp, Inc.'s Annual Report on Form 10-K for the year ended December 31, 2008.

Item 9.01.	Financial Statements and Exhibits.
	(d)	Exhibits:
	99.1	Press Release dated April 17, 2009.

SIGNATURES

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

Date:  April 17, 2009	SOUTHERN MICHIGAN BANCORP, INC.
	By	/s/ Danice L. Chartrand
		Danice L. Chartrand Senior Vice President, Chief Financial Officer, Secretary, and Treasurer

EXHIBIT INDEX

Exhibit Number	Document
99.1	Press Release dated April 17, 2009.

EX-99.1

EXHIBIT 99.1

For Immediate Release Contact:  John Castle, CEO
Southern Michigan Bank & Trust, 517-279-5500
or
Kurt Miller, President & CEO
FNB Financial, 269-279-3500

Southern Michigan Bank & Trust and FNB Financial
Obtain Approval to Unite Under One Charter, One Name

Coldwater and Three Rivers, Mich., April 17, 2009 - John Castle, Chairman and CEO of Southern Michigan Bancorp, Inc. (OTCBB: SOMC.OB), announced today that regulatory approval has been granted to unite Southern Michigan Bank & Trust and FNB Financial under a single charter and a single name: Southern Michigan Bank & Trust. The banks will begin the transition process to a single charter and name at the close of business on April 24, 2009.

"The new structure will allow us to increase operational efficiencies," said Castle, "In today's economic climate, it simply became too expensive to continue to operate both banks separately."

"Customers, shareholders and the community should see no difference - other than the new name. All of our branches will continue to operate at their current locations, offering great products and the excellent service for which we are currently known. We still intend to support the business and philanthropic projects we have always supported in the community," Castle stated.

Founded in 1864, FNB Financial has been part of the financial landscape in Southwest Michigan for 145 years. It has branches in Three Rivers, Constantine, Mendon, Centerville and Cassopolis. Southern Michigan Bank & Trust also has a long tenure in the region. Founded in 1872, it is headquartered in Coldwater and has branches in Coldwater, Athens, Battle Creek, Camden, Hillsdale, North Adams, Marshall, Tekonsha and Union City.

About Southern Michigan Bancorp
Southern Michigan Bancorp is a two-bank holding company. Its subsidiary banks are Southern Michigan Bank & Trust and FNB Financial. It operates 19 offices throughout Southern Michigan providing a broad range of consumer, business and wealth management services throughout the region. For more information, visit the SMB&T website, www.smb-t.com.

FORWARD-LOOKING STATEMENTS

This press release contains forward-looking statements that are based on management's beliefs, assumptions, current expectations, estimates and projections about the financial services industry, the economy, and Southern Michigan Bancorp, Inc. Forward-looking statements are identifiable by words or phrases such as that an event or trend "will" occur or that Southern Michigan Bancorp, Inc. or its management "intends" that a particular result or event will or "should" occur, or other words or phrases such as "still", and variations of such words and similar expressions. Southern's ability to reduce expenses, eliminate duplicate services, and improve operating efficiencies after completion of the charter consolidation is not assured. The future effect of changes in the financial and credit markets and the national and regional economy on the banking industry, generally, and Southern Michigan Bancorp, Inc., specifically, are also inherently uncertain. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions ("risk factors") that are difficult to predict with regard to timing, extent, likelihood and degree of occurrence. Therefore, actual results and outcomes may materially differ from what may be expressed or forecasted in such forward-looking statements. Risk

factors include, but are not limited to, the risk factors described in "Item 1A - Risk Factors" of Southern Michigan Bancorp, Inc.'s Annual Report on Form 10-K for the year ended December 31, 2008.