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): February 21, 2018

MainSource Financial Group, Inc.

(Exact name of registrant as specified in its charter)

Indiana		0-12422		35-1562245
State or Other Jurisdiction of Incorporation or Organization		Commission File No.		I.R.S. Employer Identification Number

2105 North State Road 3 Bypass

Greensburg, Indiana 47240

(Address of principal executive offices)

(812) 663-0157

(Registrant’s Telephone Number,

Including Area Code)

N/A

(Former Name or Former Address, if Changed Since Last Report)

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:

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 (see General Instruction A.2 below):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 240.425)

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))

Indicate by check mark whether the registrant is an emerging growth company as defined in as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company o

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. o

Item 8.01 Other Events.

On February 21, 2018, the Company announced that its Board of Directors had declared a quarterly dividend of $.18 per share payable on March 15, 2018 to common shareholders of record as of March 5, 2018. The press release is attached to this report as Exhibit 99.1.

Item 9.01.		Financial Statements and Exhibits.

	(d)	Exhibits.

		99.1	Press Release of MainSource Financial Group, Inc. dated February 21, 2018.

* * *

EXHIBIT INDEX

Exhibit Number		Description

99.1		Press Release Issued by MainSource Financial Group, Inc. dated February 21, 2018

SIGNATURE

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 hereunto duly authorized.

Date: February 22, 2018

	MAINSOURCE FINANCIAL GROUP, INC.

	By:	/s/ Archie M. Brown, Jr.
		Archie M. Brown, Jr.
		President and Chief Executive Officer

MAINSOURCE FINANCIAL GROUP 8-K