MSFG / MainSource Financial Group, Inc. - Documents déposés auprès de la SEC, rapport annuel, procuration

MainSource Financial Group, Inc.
US ˙ NASDAQ
CE SYMBOLE N'EST PLUS ACTIF

Statistiques de base
CIK 720002
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to MainSource Financial Group, Inc.
SEC Filings (Chronological Order)
Cette page fournit une liste complète et chronologique des documents déposés auprès de la SEC, à l'exclusion des documents relatifs à la participation que nous fournissons ailleurs.
April 13, 2018 15-15D

MSFG / MainSource Financial Group, Inc. 15-15D

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 333-58295 MainSource Financial Group, Inc. 401(k) and Employee Stock Owners

April 13, 2018 15-12G

MSFG / MainSource Financial Group, Inc. 15-12G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 0-12422 MainSource Financial Group, Inc. (Exact name of registrant as speci

April 2, 2018 S-8 POS

MSFG / MainSource Financial Group, Inc. S-8 POS

As filed with the Securities and Exchange Commission on April 2, 2018 Registration No.

April 2, 2018 S-8 POS

MSFG / MainSource Financial Group, Inc. S-8 POS

As filed with the Securities and Exchange Commission on April 2, 2018 Registration No.

April 2, 2018 S-8 POS

MSFG / MainSource Financial Group, Inc. S-8 POS

S-8 POS 1 a18-93204s8pos.htm S-8 POS As filed with the Securities and Exchange Commission on April 2, 2018 Registration No. 033-45395 Registration No. 333-58295 Registration No. 333-131824 Registration No. 333-173196 Registration No. 333-203886 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 4 TO FORM S-8 REGISTRATION STATEMENT NO. 033-45395 POS

April 2, 2018 S-8 POS

MSFG / MainSource Financial Group, Inc. S-8 POS

As filed with the Securities and Exchange Commission on April 2, 2018 Registration No.

April 2, 2018 S-8 POS

MSFG / MainSource Financial Group, Inc. S-8 POS

As filed with the Securities and Exchange Commission on April 2, 2018 Registration No.

April 2, 2018 EX-3.2

Amended and Restated Regulations of First Financial Bancorp, amended as of July 28, 2015

EX-3.2 3 a18-92961ex3d2.htm EX-3.2 Exhibit 3.2 Amended July 28, 2015 AMENDED AND RESTATED REGULATIONS OF FIRST FINANCIAL BANCORP. ARTICLE I MEETINGS OF SHAREHOLDERS SECTION 1.1. ANNUAL MEETING. The annual meeting of shareholders of the Corporation shall be held on the fourth Tuesday in May of each year or on such other date as may be fixed from time to time by the directors, at such time as the di

April 2, 2018 EX-3.1

Amended Articles of Incorporation of First Financial Bancorp (reflecting all amendments filed with the Ohio Secretary of State) [for purposes of SEC reporting compliance only - not filed with the Ohio Secretary of State]

Exhibit 3.1 AMENDED AND RESTATED ARTICLES OF INCORPORATION OF FIRST FINANCIAL BANCORP. FIRST. The name of said corporation shall be First Financial Bancorp. SECOND. The place in Ohio where its principal office is to be located is Cincinnati, Hamilton County. THIRD. The purposes for which it is formed are: to organize, purchase, acquire, own, invest in, or control banks and other companies, and the

April 2, 2018 8-K

Changes in Control of Registrant, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Material Modification to Rights of Security Holders, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

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): March 29, 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 Organ

March 1, 2018 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 26, 2018 MainSource Financial Group, Inc.

February 28, 2018 10-K

MSFG / MainSource Financial Group, Inc. 10-K (Annual Report)

Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 10‑K Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2017 Commission file number 0‑12422 MAINSOURCE FINANCIAL GROUP, INC. (Exact name of registrant as specified in its charter) Indiana (State or other jurisdiction of incorporation or organiza

February 28, 2018 EX-21

List of subsidiaries of the Registrant.

EX-21 2 msfg-20171231ex214609a36.htm EX-21 EXHIBIT 21 EXHIBIT 21 — SUBSIDIARIES OF THE REGISTRANT Name State of Incorporation MainSource Bank Indiana MainSource Insurance, LLC Indiana New American Real Estate, LLC Indiana MSB Investments of Nevada, Inc. Nevada MSB Holdings of Nevada, Inc. Nevada MSB of Nevada, LLC Nevada MSB Realty, Inc. Maryland MainSource Risk Management Nevada MainSource Statut

February 22, 2018 EX-99.1

Lauren Ponti-Zins

EX-99.1 2 a18-66872ex99d1.htm EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE Contact: Lauren Ponti-Zins (513) 246-2137 (office) [email protected] First Financial Bancorp and MainSource Financial Group, Inc. Announce Regulatory Approval of Proposed Merger Cincinnati, Ohio and Greensburg, Indiana– February 22, 2018 – First Financial Bancorp (NASDAQ: FFBC) and MainSource Financial Group, Inc. (NASDAQ

February 22, 2018 8-K

Financial Statements and Exhibits, Other Events

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 22, 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 Or

February 22, 2018 EX-99.1

Date: February 21, 2018

Exhibit 99.1 NEWS RELEASE Date: February 21, 2018 From: Archie M. Brown, Jr., President and Chief Executive Officer MainSource Financial Group | 812-663-6734 MainSource Financial Group ? NASDAQ, MSFG ? First Quarter Dividend Declared Greensburg, Indiana; MainSource Financial Group, Inc. (NASDAQ: MSFG); MainSource Financial Group announced today that the Board of Directors declared a first quarter

February 22, 2018 8-K

Financial Statements and Exhibits, Other Events

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 Or

February 13, 2018 8-K

Financial Statements and Exhibits, Other Events

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 13, 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 Or

February 13, 2018 EX-99.1

February 13, 2018

Exhibit 99.1 NEWS RELEASE Date: February 13, 2018 From: Archie M. Brown, Jr., President and Chief Executive Officer MainSource Financial Group | 812-663-6734 FIRST FINANCIAL BANCORP AND MAINSOURCE FINANCIAL GROUP, INC. ANNOUNCE BUYER IN PENDING DIVESTITURE OF 5 MAINSOURCE BRANCHES Cincinnati, Ohio and Greensburg, Indiana ? First Financial Bancorp (NASDAQ:FFBC) and MainSource Financial Group, Inc.

February 9, 2018 SC 13G/A

MSFG / MainSource Financial Group, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 9)* MAINSOURCE FINANCIAL GROUP I (Name of Issuer) Common Stock (Title of Class of Securities) 56062Y102 (CUSIP Number) December 31, 2017 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

January 29, 2018 8-K

Other Events

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): January 25, 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 Org

January 26, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

msfgCurrent folio8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): January 26, 2018 MainSource Financial Group, Inc.

January 26, 2018 EX-99.1

Three months ended December 31

EX-99.1 2 ex-99d1.htm EX-99.1 Exhibit 99.1 Date: January 26, 2018 4:01 pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 NEWS RELEASE MainSource Financial Group - NASDAQ, MSFG - Announces Fourth Quarter and Full Year 2017 Financial Results  Net income of $16.6 million, up 41% over 4th quarter 2016 Quarterly Earnings Per Share of $0.64 Loan Grow

January 3, 2018 8-K

Financial Statements and Exhibits, Other Events

8-K 1 a18-219318k.htm 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): January 3, 2018 MainSource Financial Group, Inc. (Exact name of registrant as specified in its charter) Indiana 0-12422 35-1562245 State or Other Jurisdictio

January 3, 2018 EX-99.1

MainSource Financial Group Announces Pay Increase for Hourly Employees

EX-99.1 2 a18-21931ex99d1.htm EX-99.1 Exhibit 99.1 NEWS RELEASE Date: January 3, 2018 From: Archie M. Brown, Jr., President and Chief Executive Officer MainSource Financial Group | 812-663-6734 MainSource Financial Group Announces Pay Increase for Hourly Employees Greensburg, Indiana — January 3, 2018 — MainSource Financial Group (Nasdaq: MSFG) will raise the starting pay and minimum hourly rate t

December 21, 2017 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events

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): December 18, 2017 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 Or

December 6, 2017 8-K

Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

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): December 4, 2017 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 Org

December 6, 2017 EX-99.1

First Financial and MainSource Announce Shareholder Approval of Merger

EX-99.1 2 a17-280951ex99d1.htm EX-99.1 Exhibit 99.1 FOR IMMEDIATE RELEASE Contacts: Lauren Ponti-Zins (513) 246-2137 (office) [email protected] First Financial and MainSource Announce Shareholder Approval of Merger Cincinnati, Ohio — December 4, 2017 — /PRNewswire/ — First Financial Bancorp. (Nasdaq: FFBC) (“First Financial”) and MainSource Financial Group, Inc. (Nasdaq: MSFG) (“MainSource”) a

November 29, 2017 425

FFBC / First Financial Bancorp 425 (Prospectus)

Document 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): November 29, 2017 FIRST FINANCIAL BANCORP. (Exact name of registrant as specified in its charter) Ohio 31-1042001 (State or other jurisdiction of incorporation or organizatio

November 29, 2017 EX-99.1

Leading Independent Proxy Advisory Firms ISS and Glass Lewis Recommend First Financial Bancorp Shareholders Vote "FOR" the Proposed Merger with MainSource Financial Group

EX-99.1 2 ex991pressrelease.htm EXHIBIT 99.1 EXHIBIT 99.1 FOR IMMEDIATE RELEASE Contacts: Lauren Ponti-Zins (513) 246-2137 (office) [email protected] Leading Independent Proxy Advisory Firms ISS and Glass Lewis Recommend First Financial Bancorp Shareholders Vote "FOR" the Proposed Merger with MainSource Financial Group Cincinnati, Ohio - November 29, 2017 - /PRNewswire/ - First Financial Banco

November 8, 2017 10-Q

MSFG / MainSource Financial Group, Inc. 10-Q (Quarterly Report)

Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2017 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC.

November 7, 2017 EX-99.1

MainSource Financial Group – NASDAQ, MSFG – Fourth Quarter Dividend Declared

EX-99.1 2 ex-99d1.htm EX-99.1 Exhibit 99.1 NEWS RELEASE Date: November 7, 2017 From: Archie M. Brown, Jr., President and Chief Executive Officer MainSource Financial Group | 812-663-6734 MainSource Financial Group – NASDAQ, MSFG – Fourth Quarter Dividend Declared Greensburg, Indiana; MainSource Financial Group, Inc. (NASDAQ: MSFG); MainSource Financial Group announced today that the Board of Direc

November 7, 2017 8-K

Financial Statements and Exhibits, Other Events

msfgCurrent folio8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): November 7, 2017 MainSource Financial Group, Inc.

October 31, 2017 425

First Financial Bancorp 425 (Prospectus)

Document 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): October 31, 2017 FIRST FINANCIAL BANCORP. (Exact name of registrant as specified in its charter) Ohio 31-1042001 (State or other jurisdiction of incorporation or organization

October 31, 2017 EX-99.1

Creating a Leading Midwest Banking Franchise EXHIBIT 99.1 2 Certain statements contained in this presentation which are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities Litigation Re

ex991investorpresentatio Creating a Leading Midwest Banking Franchise EXHIBIT 99.1 2 Certain statements contained in this presentation which are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1955. Such statements include, but are not limited to, certain plans, expectations, goals, projections and benefi

October 25, 2017 425

MainSource Financial Group 425 (Prospectus)

msfgCurrent folio425 Filed by MainSource Financial Group, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: First Financial Bancorp. Commission File No.: 001-34762 Date: October 25, 2017 4:01 pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 NEWS RELEASE MainSource Financial Group - NASDAQ, MSFG - Announces Third Quarter 2

October 25, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 f8-k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): October 25, 2017 MainSource Financial Group, Inc. (Exact name of registrant as specified in its charter) Indiana (State or other jurisdiction of incorporation) 0-1242

October 25, 2017 EX-99.1

Three months ended September 30

EX-99.1 2 ex-99d1.htm EX-99.1 Exhibit 99.1 Date: October 25, 2017 4:01 pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 NEWS RELEASE MainSource Financial Group - NASDAQ, MSFG - Announces Third Quarter 2017 Operating Results Earnings Per Share of $0.43 Net Interest Margin of 3.77% Non-performing Assets of 0.54% of Total Assets Annualized Loan G

October 23, 2017 EX-99.2

1 EXHIBIT 99.2 Community Benefits Agreement October 2017 2 First Financial Bank has agreed to a five year, $1.75 billion Community Benefits Agreement with the National Community Reinvestment Coalition, which will fund lending and community investment

ex992communitybenefitsag 1 EXHIBIT 99.2 Community Benefits Agreement October 2017 2 First Financial Bank has agreed to a five year, $1.75 billion Community Benefits Agreement with the National Community Reinvestment Coalition, which will fund lending and community investments, open eight new branches in LMI communities (including the relocation of one branch in an LMI community, and establish an a

October 23, 2017 425

First Financial Bancorp 425 (Prospectus)

Document 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): October 18, 2017 FIRST FINANCIAL BANCORP. (Exact name of registrant as specified in its charter) Ohio 31-1042001 (State or other jurisdiction of incorporation or organization

October 23, 2017 EX-99.1

First Financial Bank Announces Community Investment Plan Five-year, $1.7 Billion Community Benefits Agreement

EX-99.1 2 ex991crarelease.htm EXHIBIT 99.1 EXHIBIT 99.1 FOR IMMEDIATE RELEASE Contacts: Jennie Overholts 513-346-4766 (office) [email protected] First Financial Bank Announces Community Investment Plan Five-year, $1.7 Billion Community Benefits Agreement Cincinnati, Ohio – October 18, 2017 – First Financial Bank announced today a targeted community benefits agreement with the National Communit

October 19, 2017 DEFM14A

MainSource Financial Group DEFM14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Rule 14a-101) Filed by the Registrant ? Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-

October 19, 2017 425

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): October 19, 2017 FIRST FINANCIAL

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): October 19, 2017 FIRST FINANCIAL BANCORP. (Exact name of registrant as specified in its charter) Ohio 31-1042001 (State or other jurisdiction of incorporation or organization) (I.R.S.

October 19, 2017 EX-99.2

Earnings Presentation Third Quarter 2017 Exhibit 99.2 2 Certain statements contained in this presentation which are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities Litigation Reform

Earnings Presentation Third Quarter 2017 Exhibit 99.2 2 Certain statements contained in this presentation which are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1955. Such statements include, but are not limited to, certain plans, expectations, goals, projections and benefits relating to the merger tra

October 19, 2017 EX-99.1

First Financial Bancorp. Announces Third Quarter Results Third Quarter Earnings per Share of $0.40 Year to Date Earnings per Share Increase of 9% Compared to 2016

EXHIBIT 99.1 First Financial Bancorp. Announces Third Quarter Results Third Quarter Earnings per Share of $0.40 Year to Date Earnings per Share Increase of 9% Compared to 2016 Cincinnati, Ohio - October 19, 2017 - First Financial Bancorp. (Nasdaq: FFBC) (“First Financial” or the “Company”) announced financial results for the third quarter 2017. For the three months ended September 30, 2017, the Co

October 13, 2017 425

First Financial Bancorp 425 (Prospectus)

Document 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): October 13, 2017 FIRST FINANCIAL BANCORP. (Exact name of registrant as specified in its charter) Ohio 31-1042001 (State or other jurisdiction of incorporation or organization

October 13, 2017 EX-10.1

Amended and Restated Employment Agreement and Non-Competition Agreement between and First Financial Bank and Anthony M. Stollings dated October 13, 2017.

Exhibit EXHIBIT 10.1 AMENDED AND RESTATED EMPLOYMENT AND NON-COMPETITION AGREEMENT This Amended and Restated Employment and Non?competition Agreement (this ? Amended Agreement ?) is made and entered into by and between Anthony M. Stollings (? Employee ") and First Financial Bank (the " Company "), effective as of the Closing date of the Merger of MainSource Financial Group, Inc. (?MSFG?) with and

September 22, 2017 EX-10.2

Severance and Change in Control Agreement between John M. Gavigan and First Financial Bank dated September 22, 2017

EX-10.2 3 ex102-jmgcicxseverance0917.htm EXHIBIT 10.2 EXHIBIT 10.2 SEVERANCE AND CHANGE IN CONTROL AGREEMENT This Severance and Change in Control Agreement (the "Agreement") is made and entered into by and between John Gavigan ("Executive") and First Financial Bank (the "Company"), effective as of the Closing date of the Merger of MainSource Financial Group, Inc. (“MSFG”) with and into First Finan

September 22, 2017 EX-10.4

Severance and Change in Control Agreement between James M. Anderson and First Financial Bank dated September 18, 2017

EX-10.4 5 ex104-andersoncicxseveranc.htm EXHIBIT 10.4 EXHIBIT 10.4 SEVERANCE AND CHANGE IN CONTROL AGREEMENT This Severance and Change in Control Agreement (the "Agreement") is made and entered into by and between James M. Anderson ("Executive") and First Financial Bank (the "Company"), effective as of the Closing date of the Merger of MainSource Financial Group, Inc. (“MSFG”) with and into First

September 22, 2017 EX-10.3

Offer Letter from First Financial Bank to James M. Anderson dated September 18, 2017

EX-10.3 4 ex103offerletter-jmax91817.htm EXHIBIT 10.3 EXHIBIT 10.3 September 15, 2017 James M. Anderson Dear Jamie, As part of the transition to the “Surviving Corporation” that will be created by the Agreement and Plan of Merger between First Financial Bancorp and MainSource Financial Group, Inc. (the “Merger Agreement”), we are pleased to conditionally offer you the full-time position of Chief F

September 22, 2017 EX-10.1

Offer Letter from First Financial Bank to John M. Gavigan dated September 22, 2017

Exhibit EXHIBIT 10.1 September 15, 2017 John Gavigan Dear John, As part of the transition to the ?Surviving Corporation? that will be created by the Agreement and Plan of Merger between First Financial Bancorp and MainSource Financial Group, Inc. (the ?Merger Agreement?), we are pleased to conditionally offer you the full-time position of Chief Administrative Officer, of the Surviving Corporation,

September 22, 2017 425

First Financial Bancorp 425 (Prospectus)

425 1 a8-kexecchange092217.htm 425 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): September 18, 2017 FIRST FINANCIAL BANCORP. (Exact name of registrant as specified in its charter) Ohio 31-1042001 (State or other jurisdiction of i

August 16, 2017 8-K

Financial Statements and Exhibits, Other Events

msfgCurrent folio8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): August 16, 2017 MainSource Financial Group, Inc.

August 16, 2017 EX-99.1

MainSource Financial Group – NASDAQ, MSFG – Third Quarter Dividend Declared

EX-99.1 2 ex-99d1.htm EX-99.1 Exhibit 99.1 NEWS RELEASE Date: August 16, 2017 From: Archie M. Brown, Jr., President and Chief Executive Officer MainSource Financial Group | 812-663-6734 MainSource Financial Group – NASDAQ, MSFG – Third Quarter Dividend Declared Greensburg, Indiana; MainSource Financial Group, Inc. (NASDAQ: MSFG); MainSource Financial Group announced today that the Board of Directo

August 8, 2017 10-Q

MSFG / MainSource Financial Group, Inc. 10-Q (Quarterly Report)

Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2017 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC.

July 31, 2017 425

MainSource Financial Group 425 (Prospectus)

Filed by MainSource Financial Group, Inc. Commission File No. 000-12422 Pursuant to Rule 425 Under the Securities Act of 1933 And Deemed Filed Pursuant to Rule 14a-12 Under the Securities Exchange Act of 1934 Subject Company: MainSource Financial Group, Inc. Commission File No. 000-12422 Date: July 31, 2017 Creating a Leading Midwest Banking Franchise 2 Certain statements contained in this present

July 31, 2017 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

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): July 31, 2017 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 Organi

July 31, 2017 EX-99.1

Creating a Leading Midwest Banking Franchise

Exhibit 99.1 Creating a Leading Midwest Banking Franchise 2 Certain statements contained in this presentation which are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1955. Such statements include, but are not limited to, certain plans, expectations, goals, projections and benefits relating to the merger

July 31, 2017 425

First Financial Bancorp 425 (Prospectus)

a425investorpresentation Filed by First Financial Bancorp. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: MainSource Financial Group, Inc. (Commission File No. 000-12422) Creating a Leading Midwest Banking Franchise 2 Certain statements contained in this presentation which are not statements

July 27, 2017 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

8-K 1 a17-1836738k.htm 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): July 25, 2017 MainSource Financial Group, Inc. (Exact name of registrant as specified in its charter) Indiana 0-12422 35-1562245 State or Other Jurisdiction

July 27, 2017 EX-2.1

Agreement and Plan of Merger by and between First Financial Bancorp and MainSource Financial Group, Inc. dated as of July 25, 2017 (incorporated by reference to Exhibit 2.1 to the Report on Form 8-K of the registrant filed July 25, 2017 with the Commission (Commission File No. 0-12422)).

EX-2.1 2 a17-183673ex2d1.htm EX-2.1 Exhibit 2.1 Execution Version AGREEMENT AND PLAN OF MERGER by and between First Financial Bancorp. and MainSource Financial Group, Inc. Dated as of July 25, 2017 TABLE OF CONTENTS Page ARTICLE I THE MERGER 1 1.1 The Merger 1 1.2 Effective Time 2 1.3 Effects of the Merger 2 1.4 Conversion of MainSource Common Stock 2 1.5 First Financial Common Stock 3 1.6 Treatme

July 27, 2017 EX-10.2

EMPLOYMENT AND NON-COMPETITION AGREEMENT

EX-10.2 4 v471487ex10-2.htm EXHIBIT 10.2 Exhibit 10.2 EMPLOYMENT AND NON-COMPETITION AGREEMENT This Employment and Non-Competition Agreement (this “Agreement”) is made as of the Contract Effective Date (as defined below), between First Financial Bank and First Financial Bancorp., Ohio corporations (together, referred to herein as the “Company”), and Claude E. Davis (“Employee”). The Company and Em

July 27, 2017 EX-2.1

AGREEMENT AND PLAN OF MERGER by and between First Financial Bancorp. MainSource Financial Group, Inc. Dated as of July 25, 2017 Table of Contents

EX-2.1 2 v471487ex2-1.htm EXHIBIT 2.1 Exhibit 2.1 AGREEMENT AND PLAN OF MERGER by and between First Financial Bancorp. and MainSource Financial Group, Inc. Dated as of July 25, 2017 Table of Contents Page ARTICLE I THE MERGER 1 1.1 The Merger 1 1.2 Effective Time 2 1.3 Effects of the Merger 2 1.4 Conversion of MainSource Common Stock 2 1.5 First Financial Common Stock 3 1.6 Treatment of MainSource

July 27, 2017 EX-10.1

EMPLOYMENT AND NON-COMPETITION AGREEMENT

EX-10.1 3 v471487ex10-1.htm EXHIBIT 10.1 Exhibit 10.1 EMPLOYMENT AND NON-COMPETITION AGREEMENT This Employment and Non-Competition Agreement (this “Agreement”) is made as of the Effective Date (as defined below), between First Financial Bank and First Financial Bancorp, Ohio corporations (together referred to herein as, the “Company”), and Archie M. Brown, Jr. (“Employee”). The Company and Employe

July 27, 2017 425

First Financial Bancorp FORM 8-K (Prospectus)

425 1 v4714878k.htm FORM 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): July 25, 2017 FIRST FINANCIAL BANCORP. (Exact name of registrant as specified in its charter) Ohio 31-1042001 (State or other jurisdiction of incorporatio

July 27, 2017 425

MainSource Financial Group 8-K (Prospectus)

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): July 25, 2017 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 Organi

July 27, 2017 EX-2.1

AGREEMENT AND PLAN OF MERGER by and between First Financial Bancorp. MainSource Financial Group, Inc. Dated as of July 25, 2017

Exhibit 2.1 Execution Version AGREEMENT AND PLAN OF MERGER by and between First Financial Bancorp. and MainSource Financial Group, Inc. Dated as of July 25, 2017 TABLE OF CONTENTS Page ARTICLE I THE MERGER 1 1.1 The Merger 1 1.2 Effective Time 2 1.3 Effects of the Merger 2 1.4 Conversion of MainSource Common Stock 2 1.5 First Financial Common Stock 3 1.6 Treatment of MainSource Equity Awards 3 1.7

July 26, 2017 425

First Financial Bancorp 425 (Prospectus)

Document Filed by First Financial Bancorp. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: MainSource Financial Group, Inc. (Commission File No. 000-12422) The following transcript of a public conference call hosted by First Financial Bancorp. on July 26, 2017 is filed herewith pursuant to Rul

July 26, 2017 425

First Financial Bancorp 425 (Prospectus)

Document 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): July 25, 2017 FIRST FINANCIAL BANCORP. (Exact name of registrant as specified in its charter) Ohio 31-1042001 (State or other jurisdiction of incorporation or organization) (

July 26, 2017 EX-99.1

July 25, 2017 Creating a Leading Midwest Banking Franchise EXHIBIT 99.1 2 Certain statements contained in this presentation which are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities

ex991presentationjuly201 July 25, 2017 Creating a Leading Midwest Banking Franchise EXHIBIT 99.

July 26, 2017 EX-99.2

Top-Performing Midwest Community Banking Organizations Announce Agreement to Merge

Exhibit EXHIBIT 99.2 FOR IMMEDIATE RELEASE Contacts: Elise Cappella 513.979.5796 (office) 513.401.3387 (mobile) [email protected] Top-Performing Midwest Community Banking Organizations Announce Agreement to Merge ? First Financial Bancorp and MainSource Financial Group have agreed to partner to form a new, preeminent community bank in Ohio, Indiana and Kentucky. ? The merger will comb

July 26, 2017 EX-99.1

1

Exhibit 99.1 Date: July 26, 2017 To: MainSource Associates From: Jennifer Bullard, SVP, Director of Human Resources Subject: MainSource & First Financial Merger: Employee Questions & Answers Associate Q&A: What does this change mean for you? With the announcement of the merger of MainSource Bank with First Financial Bank, there are bound to be many questions about what the future looks like both f

July 26, 2017 8-K

Financial Statements and Exhibits, Other Events

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): July 26, 2017 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 Organi

July 26, 2017 EX-99.1

1

Exhibit 99.1 Date: July 26, 2017 To: MainSource Associates From: Jennifer Bullard, SVP, Director of Human Resources Subject: MainSource & First Financial Merger: Employee Questions & Answers Associate Q&A: What does this change mean for you? With the announcement of the merger of MainSource Bank with First Financial Bank, there are bound to be many questions about what the future looks like both f

July 26, 2017 425

MainSource Financial Group 8-K (Prospectus)

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): July 26, 2017 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 Organi

July 25, 2017 EX-99.1

July 25, 2017 Creating a Leading Midwest Banking Franchise

Exhibit 99.1 July 25, 2017 Creating a Leading Midwest Banking Franchise 2 Certain statements contained in this presentation which are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1955. Such statements include, but are not limited to, certain plans, expectations, goals, projections and benefits relating

July 25, 2017 EX-99.2

Top-Performing Midwest Community Banking Organizations Announce Agreement to Merge

EX-99.2 3 a17-183671ex99d2.htm EX-99.2 Exhibit 99.2 FOR IMMEDIATE RELEASE Contacts: Elise Cappella 513.979.5796 (office) 513.401.3387 (mobile) [email protected] Top-Performing Midwest Community Banking Organizations Announce Agreement to Merge · First Financial Bancorp and MainSource Financial Group have agreed to partner to form a new, preeminent community bank in Ohio, Indiana and K

July 25, 2017 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

8-K 1 a17-1836718k.htm 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): July 25, 2017 MainSource Financial Group, Inc. (Exact name of registrant as specified in its charter) Indiana 0-12422 35-1562245 State or Other Jurisdiction

July 25, 2017 EX-99.1

July 25, 2017 Creating a Leading Midwest Banking Franchise

Exhibit 99.1 July 25, 2017 Creating a Leading Midwest Banking Franchise 2 Certain statements contained in this presentation which are not statements of historical fact constitute forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1955. Such statements include, but are not limited to, certain plans, expectations, goals, projections and benefits relating

July 25, 2017 425

MainSource Financial Group 8-K (Prospectus)

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): July 25, 2017 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 Organi

July 25, 2017 EX-99.2

Top-Performing Midwest Community Banking Organizations Announce Agreement to Merge

Exhibit 99.2 FOR IMMEDIATE RELEASE Contacts: Elise Cappella 513.979.5796 (office) 513.401.3387 (mobile) [email protected] Top-Performing Midwest Community Banking Organizations Announce Agreement to Merge ? First Financial Bancorp and MainSource Financial Group have agreed to partner to form a new, preeminent community bank in Ohio, Indiana and Kentucky. ? The merger will combine two

July 25, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 f8-k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): July 25, 2017 MainSource Financial Group, Inc. (Exact name of registrant as specified in its charter) Indiana (State or other jurisdiction of incorporation) 0-12422 (

July 25, 2017 EX-99.1

Three months ended June 30

msfgEx991 Exhibit 99.1 Date: July 25, 2017 4:45 pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 NEWS RELEASE MainSource Financial Group - NASDAQ, MSFG - Announces Second Quarter 2017 Operating Results ? Completed Acquisition of FCB Bancorp, Inc. ? Earnings Per Share of $0.38 ? Net Interest Margin of 3.77% ? Non-performing Assets of 0.53% of Total

June 26, 2017 11-K

MainSource Financial Group 11-K

MSFG 401K FS 2016 Table of Contents SECURITIES AND EXCHANGE COMMISSION Washington, D.

May 9, 2017 10-Q

MainSource Financial Group 10-Q (Quarterly Report)

msfgCurrent folio10Q Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2017 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC.

May 4, 2017 EX-99.1

MainSource Financial Group – NASDAQ, MSFG Second Quarter Dividend Declared

Exhibit 99.1 NEWS RELEASE Date: May 4, 2017 From: Archie M. Brown, Jr., President and Chief Executive Officer MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group ? NASDAQ, MSFG Second Quarter Dividend Declared Greensburg, Indiana; MainSource Financial Group, Inc. (NASDAQ: MSFG); MainSource Financial Group announced today that the Board of Directors declared a second quarter

May 4, 2017 8-K

Financial Statements and Exhibits, Other Events, Submission of Matters to a Vote of Security Holders

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): May 3, 2017 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 Organiza

May 3, 2017 EX-99.1

Welcome 2017 Annual Meeting of Shareholders Archie M. Brown, Jr., Chairman

Exhibit 99.1 b Welcome 2017 Annual Meeting of Shareholders Archie M. Brown, Jr., Chairman Kathleen L. Bardwell William G. Barron Vincent A. Berta D.J. Hines Erin P. Hoeflinger MainSource Financial Group Proposal 1: Election of Directors Thomas M. O?Brien Lawrence R. Rueff, DVM John G. Seale, CPA Archie M. Brown, Jr. Director Nominees: Advisory Vote on Executive Compensation Policies and Procedures

May 3, 2017 8-K

Financial Statements and Exhibits, Other Events

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): May 3, 2017 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 Organiza

May 3, 2017 EX-10.1

Retirement Agreement and General Release between William J. Goodwin and MainSource Financial Group, Inc. (Incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K of the registrant filed May 3, 2017 with the Commission (Commission File No. 0-12422)).*

EX-10.1 2 a17-121192ex10d1.htm EX-10.1 Exhibit 10.1 RETIREMENT AGREEMENT AND GENERAL RELEASE This Retirement Agreement and General Release (the “Agreement”) is made and entered into as of the 3rd day of May, 2017, by William J. Goodwin, a resident of the state of Indiana (“Goodwin”) and MainSource Financial Group, Inc., a bank holding company incorporated under the laws of the state of Indiana (th

May 3, 2017 EX-99.1

MainSource Financial Group, Inc. Announces Retirement of Bill Goodwin, Chief Credit Officer

Exhibit 99.1 NEWS RELEASE Date: May 3, 2017 From: Archie M. Brown, Jr., President and Chief Executive Officer MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group, Inc. Announces Retirement of Bill Goodwin, Chief Credit Officer MainSource Financial Group, Inc. (NASDAQ: MSFG) Greensburg, Indiana; Archie M. Brown, Jr., President and Chief Executive Officer of MainSource Financi

May 3, 2017 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): May 3, 2017 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 Organiza

May 1, 2017 8-K

Financial Statements and Exhibits, Other Events

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 30, 2017 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 Organ

May 1, 2017 EX-99.1

* * * * * * 2105 N SR 3 Bypass, PO Box 2000, Greensburg, IN 47240 | Phone 812-663-6734 | MainSourceBank.com

Exhibit 99.1 NEWS RELEASE Date: May 1, 2017 From: Archie M. Brown, Jr., President and Chief Executive Officer MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group Expands Presence in Louisville; Completes Acquisition of FCB Bancorp, Inc. MainSource Financial Group, Inc. (NASDAQ: MSFG); (?MainSource? or the ?Company?) announced today that it completed its previously-announced

April 26, 2017 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

msfgCurrent folio8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 26, 2017 MainSource Financial Group, Inc.

April 26, 2017 EX-99.1

Three months ended March 31

msfgEx991 Exhibit 99.1 Date: April 26, 2017 4:01 pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 NEWS RELEASE MainSource Financial Group - NASDAQ, MSFG - Announces First Quarter 2017 Operating Results ?Net income of $12.1 million ?Earnings Per Share of $0.49 (23% Increase) ?Net Interest Margin of 3.76% ?Non-performing Assets 0.62% of Total Assets

April 19, 2017 8-K

Other Events

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 19, 2017 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 Organ

April 19, 2017 425

MainSource Financial Group 8-K (Prospectus)

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 19, 2017 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 Organ

April 14, 2017 EX-99.1

MainSource Financial Group Receives Regulatory Approvals to Acquire FCB Bancorp, Inc.

Exhibit 99.1 NEWS RELEASE Date: April 14, 2017 From: Archie M. Brown, Jr., President & Chief Executive Officer MainSource Bank | 812-663-6734 MainSource Financial Group Receives Regulatory Approvals to Acquire FCB Bancorp, Inc. MainSource Financial Group, Inc. (?MainSource? or the ?Company?) and FCB Bancorp, Inc. (?FCB?) announced today that the Federal Reserve Bank (the ?FRB?) and the Kentucky De

April 14, 2017 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 14, 2017 MainSource Financial Group, Inc.

April 14, 2017 EX-99.1

MainSource Financial Group Receives Regulatory Approvals to Acquire FCB Bancorp, Inc.

Exhibit 99.1 NEWS RELEASE Date: April 14, 2017 From: Archie M. Brown, Jr., President & Chief Executive Officer MainSource Bank | 812-663-6734 MainSource Financial Group Receives Regulatory Approvals to Acquire FCB Bancorp, Inc. MainSource Financial Group, Inc. (?MainSource? or the ?Company?) and FCB Bancorp, Inc. (?FCB?) announced today that the Federal Reserve Bank (the ?FRB?) and the Kentucky De

April 14, 2017 425

MainSource Financial Group 8-K (Prospectus)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 14, 2017 MainSource Financial Group, Inc.

March 24, 2017 DEF 14A

MainSource Financial Group DEF 14A

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 17, 2017 S-4/A

As filed with the Securities and Exchange Commission on March 16, 2017

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents As filed with the Securities and Exchange Commission on March 16, 2017 Registration No.

March 17, 2017 EX-99.1

[LETTERHEAD OF SANDLER O’NEILL & PARTNERS, L.P.] CONSENT OF SANDLER O’NEILL & PARTNERS, L.P.

Exhibit 99.1 [LETTERHEAD OF SANDLER O’NEILL & PARTNERS, L.P.] CONSENT OF SANDLER O’NEILL & PARTNERS, L.P. We hereby consent to the inclusion of our opinion letter to the Board of Directors of FCB Bancorp, Inc. (the “Company”) as Annex B to the Proxy Statement/Prospectus relating to the proposed merger of the Company with MainSource Financial Group, Inc. contained in Amendment No. 2 to the Registra

March 17, 2017 CORRESP

MainSource Financial Group ESP

March 17, 2017 VIA EDGAR TRANSMISSION David Lin, Staff Attorney Office of Financial Services Securities and Exchange Commission Division of Corporation Finance 100 F Street NE, Mail Stop 4720 Washington, DC 20549 Re: MainSource Financial Group, Inc.

March 17, 2017 EX-99.2

If you would like to reduce the costs incurred by our company in mailing proxy 1234567 VOTE BY MAIL 123,456,789,012.12345 TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ON

Exhibit 99.2 If you would like to reduce the costs incurred by our company in mailing proxy 1234567 VOTE BY MAIL 123,456,789,012.12345 TO VOTE, MARK BLOCKS BELOW IN BLUE OR BLACK INK AS FOLLOWS: KEEP THIS PORTION FOR YOUR RECORDS DETACH AND RETURN THIS PORTION ONLY THIS PROXY CARD IS VALID ONLY WHEN SIGNED AND DATED. The Board of Directors recommends you vote FOR proposals 1 and 2. 1. To approve a

March 10, 2017 10-K

MainSource Financial Group 10-K (Annual Report)

10-K 1 msfg-20161231x10k.htm 10-K Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 10‑K Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2016 Commission file number 0‑12422 MAINSOURCE FINANCIAL GROUP, INC. (Exact name of registrant as specified in its charter) Indiana (State or other jurisdi

March 10, 2017 EX-21

EXHIBIT 21 — SUBSIDIARIES OF THE REGISTRANT

EXHIBIT 21 EXHIBIT 21 — SUBSIDIARIES OF THE REGISTRANT Name State of Incorporation MainSource Bank Indiana MainSource Insurance, LLC Indiana MSB Investments of Nevada, Inc.

March 8, 2017 EX-99.1

[LETTERHEAD OF SANDLER O’NEILL & PARTNERS, L.P.] CONSENT OF SANDLER O’NEILL & PARTNERS, L.P.

Exhibit 99.1 [LETTERHEAD OF SANDLER O’NEILL & PARTNERS, L.P.] CONSENT OF SANDLER O’NEILL & PARTNERS, L.P. We hereby consent to the inclusion of our opinion letter to the Board of Directors of FCB Bancorp, Inc. (the “Company”) as Annex B to the Proxy Statement/Prospectus relating to the proposed merger of the Company with MainSource Financial Group, Inc. contained in Amendment No. 1 to the Registra

March 8, 2017 CORRESP

MainSource Financial Group ESP

Larry C. Tomlin Attorney At Law Phone: (317) 464-4122 Fax: (317) 464-4123 E-Mail: [email protected] March 8 2017 VIA EDGAR David Lin, Staff Attorney Office of Financial Services Securities and Exchange Commission Division of Corporation Finance 100 F Street NE, Mail Stop 4720 Washington, DC 20549 Re: MainSource Financial Group, Inc. Registration Statement on Form S-4 Filed February 6, 2017 Regis

March 8, 2017 EX-99.2

PRELIMINARY PROXY CARD DATED MARCH 7, 2017, SUBJECT TO COMPLETION VOTE BY INTERNET - www.proxyvote.com Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 P.M. Eastern Time the day before th

Exhibit 99.2 PRELIMINARY PROXY CARD DATED MARCH 7, 2017, SUBJECT TO COMPLETION VOTE BY INTERNET - www.proxyvote.com Use the Internet to transmit your voting instructions and for electronic delivery of information up until 11:59 P.M. Eastern Time the day before the cut-off date or meeting date. Have your proxy card in hand when you access the web site and follow the instructions to obtain your reco

March 8, 2017 S-4/A

As filed with the Securities and Exchange Commission on March 8, 2017

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents As filed with the Securities and Exchange Commission on March 8, 2017 Registration No.

March 8, 2017 EX-10.2

Form of First Amendment to Voting Agreement of directors of FCB Bancorp, Inc. (Incorporated by reference to Exhibit 10.2 to the Form S-4 of the registrant filed March 8, 2017 with the Commission (Commission File No. 0-12422)).

Exhibit 10.2 FIRST AMENDMENT TO VOTING AGREEMENT This FIRST AMENDMENT TO VOTING AGREEMENT (“Amendment”) is made and entered into by and between the undersigned director of FCB Bancorp, Inc. (“Director”) and MainSource Financial Group, Inc. (“MainSource”). WHEREAS, the Director and MainSource are parties to a certain Voting Agreement, dated December 19, 2016 (the “Voting Agreement”); and WHEREAS, t

March 6, 2017 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 27, 2017 MainSource Financial Group, Inc.

February 9, 2017 SC 13G/A

MSFG / MainSource Financial Group, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 dfs229.htm SCHEDULE 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7)* MAINSOURCE FINANCIAL GROUP I (Name of Issuer) Common Stock (Title of Class of Securities) 56062Y102 (CUSIP Number) December 31, 2016 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

February 6, 2017 EX-99.1

[LETTERHEAD OF SANDLER O’NEILL & PARTNERS, L.P.] CONSENT OF SANDLER O’NEILL & PARTNERS, L.P.

Exhibit 99.1 [LETTERHEAD OF SANDLER O’NEILL & PARTNERS, L.P.] CONSENT OF SANDLER O’NEILL & PARTNERS, L.P. We hereby consent to the inclusion of our opinion letter to the Board of Directors of FCB Bancorp, Inc. (the “Company”) as Annex B to the Proxy Statement/Prospectus relating to the proposed merger of the Company with MainSource Financial Group, Inc. contained in the Registration Statement on F

February 6, 2017 EX-24

POWER OF ATTORNEY

Exhibit 24 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Archie M.

February 6, 2017 S-4

As filed with the Securities and Exchange Commission on February 6, 2017

Use these links to rapidly review the document TABLE OF CONTENTS As filed with the Securities and Exchange Commission on February 6, 2017 Registration No.

January 25, 2017 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

msfgCurrent folio8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): January 25, 2017 MainSource Financial Group, Inc.

January 25, 2017 EX-99.1

Three months ended December 31

msfgEx991 Exhibit 99.1 Date: January 25, 2017 4:01 pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 NEWS RELEASE MainSource Financial Group - NASDAQ, MSFG - Announces Fourth Quarter 2016 Financial Results, Quarterly Common Dividend and Appointment of Kathleen L. Bardwell as Lead Director Net income of $11.7 million Earnings Per Share of $0.48 L

January 25, 2017 425

MainSource Financial Group 8-K (Prospectus)

msfgCurrent folio8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): January 25, 2017 MainSource Financial Group, Inc.

January 25, 2017 EX-99.1

Three months ended December 31

msfgEx991 Exhibit 99.1 Date: January 25, 2017 4:01 pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 NEWS RELEASE MainSource Financial Group - NASDAQ, MSFG - Announces Fourth Quarter 2016 Financial Results, Quarterly Common Dividend and Appointment of Kathleen L. Bardwell as Lead Director Net income of $11.7 million Earnings Per Share of $0.48 L

January 19, 2017 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): January 18, 2017 MainSource Financial Group, Inc.

December 28, 2016 EX-10.1

Retirement Agreement and General Release between Daryl R. Tressler and MainSource Financial Group, Inc. dated December 21, 2016 (incorporated by reference to Exhibit 10.1 to the Report on Form 8-K of the registrant filed on December 28, 2016 with the Commission (Commission File No. 0-12422)).*

EX-10.1 2 a16-238441ex10d1.htm EX-10.1 Exhibit 10.1 RETIREMENT AGREEMENT AND GENERAL RELEASE This Retirement Agreement and General Release (the “Agreement”) is made and entered into of the 21st day of December, 2016, by Daryl R. Tressler, a resident of the state of Indiana (“Tressler”) and MainSource Financial Group, Inc., a bank holding company incorporated under the laws of the state of Indiana

December 28, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): December 21, 2016 MainSource Financial Group, Inc.

December 28, 2016 EX-99.1

MainSource Bank Announces the Retirement of President & CEO, Daryl R. Tressler

Exhibit 99.1 NEWS RELEASE Date: December 28, 2016 Contact: Archie Brown, Jr., President and CEO MainSource Financial Group, Inc. 812-663-6734 MainSource Bank Announces the Retirement of President & CEO, Daryl R. Tressler Greensburg, Indiana (NASDAQ: MSFG); Archie Brown, Jr., President and Chief Executive Officer of MainSource Financial Group, Inc. has announced the retirement of Daryl R. Tressler,

December 19, 2016 425

MainSource Financial Group 425 (Prospectus)

Filed by MainSource Financial Group Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: FCB Bancorp, Inc.

December 19, 2016 EX-10.1

Form of Voting Agreement dated December 19, 2016 (incorporated by reference to Exhibit 10.1 to the Report on Form 8-K of the registrant filed on December 19, 2016 with the Commission (Commission File No. 0-12422)).

EXHIBIT 10.1 EXHIBIT A VOTING AGREEMENT The undersigned director of FCB Bancorp, Inc. (?FCB?) hereby agrees in his individual capacity as a shareholder to vote his shares of FCB Common Stock that are registered in his personal name and not in a fiduciary capacity (and agrees to use his reasonable efforts to cause all additional shares of FCB Common Stock owned jointly by him with any other person

December 19, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

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): December 19, 2016 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 Or

December 19, 2016 EX-2.1

Agreement and Plan of Merger, dated December 19, 2016, by and between MainSource Financial Group, Inc. and FCB Bancorp, Inc. (incorporated by reference to Exhibit 2.1 to the report on Form 8-K of the registrant filed on December 19, 2016 with the Commission (Commision File No. 0-12422)).

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER THIS AGREEMENT AND PLAN OF MERGER (this ?Agreement?) is dated to be effective as of the 19th day of December, 2016, by and between MAINSOURCE FINANCIAL GROUP, INC., an Indiana corporation (?MainSource?), and FCB BANCORP, INC., a Kentucky corporation (?FCB?). W I T N E S S E T H: WHEREAS, MainSource is an Indiana corporation registered as a bank holding comp

December 19, 2016 EX-99.1

MainSource Financial Group to Significantly Expand its Louisville Presence with the Acquisition of FCB Bancorp, Inc.

Exhibit 99.1 MainSource Financial Group to Significantly Expand its Louisville Presence with the Acquisition of FCB Bancorp, Inc. · Accelerates our greater Louisville expansion and leverages our existing investment in the market with the addition of 7 full service branches and $390 million in deposits in Jefferson County · #9 pro forma Louisville deposit market share · Estimated EPS accretion of a

December 19, 2016 425

MainSource Financial Group 8-K (Prospectus)

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): December 19, 2016 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 Or

December 19, 2016 EX-2.1

AGREEMENT AND PLAN OF MERGER

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER THIS AGREEMENT AND PLAN OF MERGER (this “Agreement”) is dated to be effective as of the 19th day of December, 2016, by and between MAINSOURCE FINANCIAL GROUP, INC., an Indiana corporation (“MainSource”), and FCB BANCORP, INC., a Kentucky corporation (“FCB”). W I T N E S S E T H: WHEREAS, MainSource is an Indiana corporation registered as a bank holding comp

December 19, 2016 EX-99.1

MainSource Financial Group to Significantly Expand its Louisville Presence with the Acquisition of FCB Bancorp, Inc.

Exhibit 99.1 MainSource Financial Group to Significantly Expand its Louisville Presence with the Acquisition of FCB Bancorp, Inc. ? Accelerates our greater Louisville expansion and leverages our existing investment in the market with the addition of 7 full service branches and $390 million in deposits in Jefferson County ? #9 pro forma Louisville deposit market share ? Estimated EPS accretion of a

December 19, 2016 EX-10.1

VOTING AGREEMENT

EXHIBIT 10.1 EXHIBIT A VOTING AGREEMENT The undersigned director of FCB Bancorp, Inc. (?FCB?) hereby agrees in his individual capacity as a shareholder to vote his shares of FCB Common Stock that are registered in his personal name and not in a fiduciary capacity (and agrees to use his reasonable efforts to cause all additional shares of FCB Common Stock owned jointly by him with any other person

November 29, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): November 22, 2016 MainSource Financial Group, Inc.

November 8, 2016 10-Q

MainSource Financial Group 10-Q (Quarterly Report)

msfgCurrent folio10Q Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2016 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC.

October 26, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

msfgCurrent folio8K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): October 26, 2016 MainSource Financial Group, Inc.

October 26, 2016 EX-99.1

MAINSOURCE FINANCIAL GROUP (Dollars in thousands except per share data)

msfgEx991 Exhibit 99.1 News Release Date: October 26, 2016 4:00 pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group - NASDAQ, MSFG - Announces Third Quarter 2016 Financial Results Greensburg, Indiana, Archie M. Brown, Jr., President and Chief Executive Officer of MainSource Financial Group, Inc. (NASDAQ: MSFG), announced to

September 22, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): September 22, 2016 MainSource Financial Group, Inc.

September 22, 2016 EX-99.1

MainSource FINANCIAL GROUP Meeting the financial needs of our costomers... for life September 2016

Exhibit 99.1 MainSource FINANCIAL GROUP Meeting the financial needs of our costomers... for life September 2016 Disclosure Regarding Forward Looking Statements 2 This presentation may include comments or information that constitute forward-looking statements (within the meaning of the Private Securities Litigation Reform Act of 1995) based on current expectations that involve a number of risks and

September 16, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): September 12, 2016 MainSource Financial Group, Inc.

August 19, 2016 EX-99.1

MainSource Financial Group — NASDAQ, MSFG Third Quarter Dividend Declared

Exhibit 99.1 Date: August 19, 2016 4:00 p.m. EST Contact: Archie Brown, Jr. President and CEO MainSource Financial Group, Inc. 812-663-6734 NEWS RELEASE MainSource Financial Group — NASDAQ, MSFG Third Quarter Dividend Declared Greensburg, Indiana (NASDAQ: MSFG) — MainSource Financial Group’s Board of Directors announced today that the Company declared a third quarter common dividend of $0.15 per s

August 19, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): August 19, 2016 MainSource Financial Group, Inc.

August 19, 2016 EX-99.1

MainSource Financial Group — NASDAQ, MSFG Third Quarter Dividend Declared

Exhibit 99.1 Date: August 19, 2016 4:00 p.m. EST Contact: Archie Brown, Jr. President and CEO MainSource Financial Group, Inc. 812-663-6734 NEWS RELEASE MainSource Financial Group — NASDAQ, MSFG Third Quarter Dividend Declared Greensburg, Indiana (NASDAQ: MSFG) — MainSource Financial Group’s Board of Directors announced today that the Company declared a third quarter common dividend of $0.15 per s

August 19, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): August 19, 2016 MainSource Financial Group, Inc.

August 8, 2016 EX-10.1

Loan Agreement between U.S. Bank National Association and MainSource Financial Group, Inc., dated April 28, 2016 (filed as Exhibit 10.1 to the Quarterly Report on Form 10-Q of MainSource Financial Group, Inc. filed on August 8, 2016).

EXHIBIT 10.1 LOAN AGREEMENT between U.S. BANK NATIONAL ASSOCIATION and MAINSOURCE FINANCIAL GROUP, INC. Dated as of April 28, 2016 EXHIBITS: AForm of Draw Note BForm of Quarterly Compliance Certificate i LOAN AGREEMENT This LOAN AGREEMENT (this “Agreement”) is dated as of April 28, 2016, and is made by and between MAINSOURCE FINANCIAL GROUP, INC., an Indiana corporation (“Borrower”), and U.S. BANK

August 8, 2016 10-Q

MSFG / MainSource Financial Group, Inc. 10-Q - Quarterly Report - 10-Q

Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2016 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC.

August 8, 2016 EX-10.2

Amendment to Change in Control Agreement between MainSource Financial Group, Inc. and Chris Harrison dated April 20, 2016 (incorporated by reference to Exhibit 10.2 to the Report on Form 10-Q of the registrant filed on August 8, 2016 with the Commission (Commission File No. 0-12422)).*

Exhibit 10.2 AMENDMENT TO CHANGE IN CONTROL AGREEMENT THIS AMENDMENT TO CHANGE IN CONTROL AGREEMENT (the “Amendment”) is entered into as of the 20th day of April, 2016 by and between MAINSOURCE FINANCIAL GROUP, INC. (the “Company”), an Indiana corporation, and CHRIS HARRISON (the “Executive”). RECITALS: WHEREAS, Executive and the Company are parties to a Change in Control Agreement dated as of May

July 27, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): July 27, 2016 MainSource Financial Group, Inc.

July 27, 2016 EX-99.1

MAINSOURCE FINANCIAL GROUP (Dollars in thousands except per share data)

Exhibit 99.1 News Release Date: July 27, 2016 4:00pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group - NASDAQ, MSFG - Announces Second Quarter 2016 Financial Results Greensburg, Indiana, Archie M. Brown, Jr., President and Chief Executive Officer of MainSource Financial Group, Inc. (NASDAQ: MSFG), announced today the unaud

June 27, 2016 11-K

MainSource Financial Group 11-K

Table of Contents SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2015 Commission file number 333-58295 MAINSOURCE FINANCIAL GROUP, INC. 401 (K) AND EMPLOYEE STOCK OWNERSHIP PLAN (Full title of the plan) MAINSOURCE FINANCIAL GROUP, INC. (Name of issuer of the se

May 27, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): May 27, 2016 MainSource Financial Group, Inc.

May 27, 2016 EX-99.1

May 27, 2016 4:00pm EST

Exhibit 99.1 News Release Date: May 27, 2016 4:00pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group - NASDAQ, MSFG - Announces Merger Consideration Election and Allocation Results In Connection With Cheviot Financial Corp. Merger Greensburg, Indiana, Archie M. Brown, Jr., President and Chief Executive Officer of MainSource

May 23, 2016 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Other Events

8-K 1 a16-1193118k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): May 20, 2016 MainSource Financial Group, Inc. (Exact name of registrant as specified in its charter) Indiana (State or other jurisdiction of incorporation) 0-

May 23, 2016 EX-99.1

* * * * *

Exhibit 99.1 Date: May 23, 2016, 8:00 a.m. E.S.T. Contact: Archie M Brown, Jr. President & CEO MainSource Financial Group, Inc. 812-663-6734 NEWS RELEASE MainSource Financial Group Expands Presence in Cincinnati; Completes its Acquisition Of Cheviot Financial Corp. MainSource Financial Group, Inc. (NASDAQ:MSFG) (“MainSource” or the “Company”) announced today that it has finalized the acquisition o

May 16, 2016 EX-99.1

MainSource Financial Group — NASDAQ, MSFG Second Quarter Dividend Declared

Exhibit 99.1 Date: May 16, 2016 4:00 p.m. EST Contact: Archie Brown, Jr. President and CEO MainSource Financial Group, Inc. 812-663-6734 NEWS RELEASE MainSource Financial Group ? NASDAQ, MSFG Second Quarter Dividend Declared Greensburg, Indiana (NASDAQ: MSFG) ? MainSource Financial Group?s Board of Directors announced today that the Company declared a second quarter common dividend of $0.15 per sh

May 16, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): May 16, 2016 MainSource Financial Group, Inc.

May 9, 2016 10-Q

MSFG / MainSource Financial Group, Inc. 10-Q - Quarterly Report - 10-Q

Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2016 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC.

May 4, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 28, 2016 MainSource Financial Group, Inc.

May 2, 2016 EX-99.1

MainSource Financial Group Meeting the financial needs of our customers...for life!

Exhibit 99.1 MainSource Financial Group Meeting the financial needs of our customers...for life! Welcome 2016 Annual Meeting of Shareholders Archie M. Brown, Jr., Chairman Introduction of Director Nominees Charles J. Thayer Kathleen L. Bardwell William G. Barron Vincent A. Berta D.J. Hines Erin P. Hoeflinger Thomas M. O’Brien MainSource Financial Group Proposal 1: Election of Directors Lawrence R.

May 2, 2016 425

MainSource Financial Group 8-K (Prospectus)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 27, 2016 MainSource Financial Group, Inc.

May 2, 2016 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 27, 2016 MainSource Financial Group, Inc.

May 2, 2016 EX-99.1

MainSource Financial Group Meeting the financial needs of our customers...for life!

Exhibit 99.1 MainSource Financial Group Meeting the financial needs of our customers...for life! Welcome 2016 Annual Meeting of Shareholders Archie M. Brown, Jr., Chairman Introduction of Director Nominees Charles J. Thayer Kathleen L. Bardwell William G. Barron Vincent A. Berta D.J. Hines Erin P. Hoeflinger Thomas M. O’Brien MainSource Financial Group Proposal 1: Election of Directors Lawrence R.

April 29, 2016 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 27, 2016 MainSource Financial Group, Inc.

April 27, 2016 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 21, 2016 MainSource Financial Group, Inc.

April 27, 2016 425

MainSource Financial Group 8-K (Prospectus)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 21, 2016 MainSource Financial Group, Inc.

April 26, 2016 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 20, 2016 MainSource Financial Group, Inc.

April 25, 2016 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 25, 2016 MainSource Financial Group, Inc.

April 25, 2016 EX-99.1

MAINSOURCE FINANCIAL GROUP (Dollars in thousands except per share data)

Exhibit 99.1 News Release Date: April 25, 2016 4:00pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group - NASDAQ, MSFG - Announces First Quarter 2016 Financial Results ? Net income of $8.8 million ? Earnings Per Share of $0.40 ? Continued Improvement in Credit Quality ? Increase in Common Dividend to $0.15 ? Tangible Common

April 8, 2016 425

MainSource Financial Group 425 (Prospectus)

Filed by MainSource Financial Group, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: Cheviot Financial Corp. Commission File No. 001-35399 Form S-4 File No.: 333-209479 The following is the text of a welcome letter sent to the customers of Cheviot Savings Bank by MainSource Financial Group, Inc. (?MainSource?) and Cheviot Financial Corp. (?Cheviot?). Recipient Name Reci

March 30, 2016 424B3

PROXY STATEMENT FOR THE SPECIAL MEETING OF CHEVIOT FINANCIAL CORP. STOCKHOLDERS and PROSPECTUS OF MAINSOURCE FINANCIAL GROUP, INC. MERGER PROPOSAL—YOUR VOTE IS VERY IMPORTANT

424B3 1 a2228058z424b3.htm 424(B)(3) Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents Filed Pursuant to Rule 424(b)(3) Registration Statement No. 333-209479 PROXY STATEMENT FOR THE SPECIAL MEETING OF CHEVIOT FINANCIAL CORP. STOCKHOLDERS and PROSPECTUS OF MAINSOURCE FINANCIAL GROUP, INC. MERGER PROPOSAL—YOUR VOTE IS VERY IMPORTANT Dear Cheviot Fin

March 28, 2016 CORRESP

MainSource Financial Group ESP

March 28, 2016 VIA EDGAR TRANSMISSION Era Anagnosti, Legal Branch Chief Division of Corporate Finance United States Securities and Exchange Commission 100 F Street, NE Washington, DC 20549 Re: MainSource Financial Group, Inc.

March 25, 2016 EX-99.3

ELECTION FORM AND LETTER OF TRANSMITTAL

EX-99.3 7 a2227971zex-993.htm EX-99.3 Exhibit 99.3 ELECTION FORM AND LETTER OF TRANSMITTAL This Election Form and Letter of Transmittal is being delivered to holders of shares of common stock of Cheviot Financial Corp. (“Cheviot”) in connection with the Agreement and Plan of Merger (the “Merger Agreement”), by and between Cheviot and MainSource Financial Group, Inc. (“MainSource”), whereby Cheviot

March 25, 2016 EX-99.1

MMMMMMMMMMMM . MMMMMMMMMMMMMMM C123456789 CHEVIOT FINANCIAL CORP. 000004 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext ENDORSEMENT_LINE______________ SACKPACK____________

Exhibit 99.1 MMMMMMMMMMMM . MMMMMMMMMMMMMMM C123456789 CHEVIOT FINANCIAL CORP. 000004 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext 000000000.000000 ext ENDORSEMENTLINE SACKPACK Electronic Voting Instructions Available 24 hours a day, 7 days a week! Instead of mailing your proxy, you may choose one of the voting methods outlined below to v

March 25, 2016 S-4/A

As filed with the Securities and Exchange Commission on March 25, 2016

S-4/A 1 a2227971zs-4a.htm S-4/A Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents As filed with the Securities and Exchange Commission on March 25, 2016 Registration No. 333-209479 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Pre-Effective Amendment No. 2 to FORM S-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 193

March 25, 2016 EX-99.5

VOTE AUTHORIZATION FORM CHEVIOT FINANCIAL CORP EMPLOYEE STOCK OWNERSHIP PLAN SPECIAL MEETING OF SHAREHOLDERS MAY 10, 2016 NAME SHARES

Exhibit 99.5 VOTE AUTHORIZATION FORM CHEVIOT FINANCIAL CORP EMPLOYEE STOCK OWNERSHIP PLAN SPECIAL MEETING OF SHAREHOLDERS MAY 10, 2016 NAME SHARES The undersigned, being a participant in the Cheviot Financial Corp. Employee Stock Ownership Plan (the “Plan”), does hereby instruct First Bankers Trust Services, Inc. as the Trustee of the Plan to vote with respect to all shares allocated to the unders

March 25, 2016 EX-99.4

VOTE AUTHORIZATION FORM CHEVIOT SAVINGS BANK 401(k) SAVINGS PLAN SPECIAL MEETING OF STOCKHOLDERS MAY 10, 2016 NAME SHARES

Exhibit 99.4 VOTE AUTHORIZATION FORM CHEVIOT SAVINGS BANK 401(k) SAVINGS PLAN SPECIAL MEETING OF STOCKHOLDERS MAY 10, 2016 NAME SHARES The undersigned, being a participant in the Cheviot Savings Bank 401(k) Plan (the “401(k) Plan”) with assets in the Cheviot Financial Corp. Stock Fund (the “Stock Fund”) under the 401(k) Plan, does hereby instruct First Bankers Trust Services, Inc. as the Trustee t

March 25, 2016 EX-10.3

EMPLOYMENT AGREEMENT

Exhibit 10.3 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT is made this day of , 2016, by and between MainSource Bank (“Employer” or “Bank”) and Patricia L. Walter (“Employee”) (collectively referred to as the “Parties”). RECITALS WHEREAS, pursuant to an Agreement and Plan of Merger dated as of November 23, 2015 (the “Agreement”), between MainSource Financial Group, Inc. (“MainSource”) and Chevio

March 25, 2016 EX-10.2

EMPLOYMENT AGREEMENT

Exhibit 10.2 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT is made this day of , 2016, by and between MainSource Bank (“Employer” or “Bank”) and Mark T. Reitzes (“Employee”) (collectively referred to as the “Parties”). RECITALS WHEREAS, pursuant to an Agreement and Plan of Merger dated as of November 23, 2015 (the “Agreement”), between MainSource Financial Group, Inc. (“MainSource”) and Cheviot F

March 23, 2016 DEF 14A

MainSource Financial Group DEF 14A

Use these links to rapidly review the document TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 11, 2016 EX-21

EXHIBIT 21 — SUBSIDIARIES OF THE REGISTRANT

EXHIBIT 21 EXHIBIT 21 — SUBSIDIARIES OF THE REGISTRANT Name State of Incorporation MainSource Bank Indiana MainSource Insurance, LLC Indiana MSB Investments of Nevada, Inc.

March 11, 2016 10-K

MSFG / MainSource Financial Group, Inc. 10-K - Annual Report - 10-K

10-K 1 msfg-20151231x10k.htm 10-K Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D. C. 20549 FORM 10‑K Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2015 Commission file number 0‑12422 MAINSOURCE FINANCIAL GROUP, INC. (Exact name of registrant as specified in its charter) Indiana (State or other jurisdi

March 11, 2016 EX-14

MAINSOURCE FINANCIAL GROUP, INC. CODE OF CONDUCT

EXHIBIT 14 MAINSOURCE FINANCIAL GROUP, INC. CODE OF CONDUCT Introduction MainSource Financial Group, Inc. (the “Company”) and its affiliated and subsidiary organizations are required by law to meet certain ethical and legal standards, including the obligation at all times to comply with the laws, rules and regulations of the United States and of each jurisdiction (local and foreign) in which the C

March 10, 2016 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): March 4, 2016 MainSource Financial Group, Inc.

March 9, 2016 EX-24

POWER OF ATTORNEY

EX-24 2 a2227639zex-24.htm EXHIBIT 24 Exhibit 24 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Archie M. Brown, Jr. and James M. Anderson, and each of them, his or her true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution, to sign, execute and file with the Securities and Exch

March 9, 2016 CORRESP

MainSource Financial Group ESP

March 9, 2016 Larry C. Tomlin Direct Dial: (317) 464-4122 E-mail: [email protected] VIA EDGAR Era Anagnosti Legal Branch Chief Office of Financial Services Securities and Exchange Commission Division of Corporation Finance 100 F Street NE, Mail Stop 4720 Washington, DC 20549 Re: MainSource Financial Group, Inc. Registration Statement on Form S-4 Filed February 11, 2016 Dear Ms. Anagnosti: On beh

March 9, 2016 S-4/A

As filed with the Securities and Exchange Commission on March 9, 2016

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents As filed with the Securities and Exchange Commission on March 9, 2016 Registration No.

February 24, 2016 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 22, 2016 MainSource Financial Group, Inc.

February 11, 2016 EX-99.1

REVOCABLE PROXY CHEVIOT FINANCIAL CORP. SPECIAL MEETING OF STOCKHOLDERS , 2016

Exhibit 99.1 REVOCABLE PROXY CHEVIOT FINANCIAL CORP. SPECIAL MEETING OF STOCKHOLDERS , 2016 The undersigned hereby appoints the official proxy committee consisting of the Board of Directors of Cheviot Financial Corp. (“Cheviot”), with full powers of substitution, to act as attorneys and proxies for the undersigned to vote all shares of common stock of Cheviot which the undersigned is entitled to v

February 11, 2016 S-4

As filed with the Securities and Exchange Commission on February 11, 2016

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents As filed with the Securities and Exchange Commission on February 11, 2016 Registration No.

February 11, 2016 EX-99.2

CONSENT OF KEEFE, BRUYETTE & WOODS, INC.

Exhibit 99.2 CONSENT OF KEEFE, BRUYETTE & WOODS, INC. We hereby consent to the inclusion of our opinion letter to the Board of Directors of Cheviot Financial Corp. (“CHEV”), as Annex B to the Proxy Statement/Prospectus which forms a part of the Registration Statement on Form S-4 filed on the date hereof (the “Registration Statement”) relating to the proposed merger of CHEV with and into MainSource

February 11, 2016 EX-24

POWER OF ATTORNEY

Exhibit 24 POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints Archie M.

February 9, 2016 SC 13G/A

MSFG / MainSource Financial Group, Inc. / DIMENSIONAL FUND ADVISORS LP - SCHEDULE 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 7)* MAINSOURCE FINANCIAL GROUP I (Name of Issuer) Common Stock (Title of Class of Securities) 56062Y102 (CUSIP Number) December 31, 2015 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

January 28, 2016 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): January 25, 2016 MainSource Financial Group, Inc.

January 28, 2016 EX-99.1

MainSource Financial Group Announces Appointment of Vince Berta to Board of Directors, Retirement of Charles Thayer

Exhibit 99.1 News Release Date: January 29, 2016 4:00pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group Announces Appointment of Vince Berta to Board of Directors, Retirement of Charles Thayer Archie M. Brown, President and CEO of MainSource Financial Group, Inc., announced today that Charles J. Thayer has notified the Boa

January 26, 2016 425

MainSource Financial Group 8-K (Prospectus)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): January 26, 2016 MainSource Financial Group, Inc.

January 26, 2016 EX-99.1

MAINSOURCE FINANCIAL GROUP—NASDAQ, MSFG — Announces Fourth Quarter and Full Year 2015 Operating Results and Increase to Common Dividend

Exhibit 99.1 DATE: January 26, 2016 4:00 p.m. E.S.T. CONTACT: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. 812-663-6734 MAINSOURCE FINANCIAL GROUP?NASDAQ, MSFG ? Announces Fourth Quarter and Full Year 2015 Operating Results and Increase to Common Dividend ? Record annual earnings of $35.5 million for 2015 ? First quarter 2016 common stock dividend increased to $0.15 per

January 26, 2016 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): January 26, 2016 MainSource Financial Group, Inc.

January 26, 2016 EX-99.1

MAINSOURCE FINANCIAL GROUP—NASDAQ, MSFG — Announces Fourth Quarter and Full Year 2015 Operating Results and Increase to Common Dividend

Exhibit 99.1 DATE: January 26, 2016 4:00 p.m. E.S.T. CONTACT: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. 812-663-6734 MAINSOURCE FINANCIAL GROUP?NASDAQ, MSFG ? Announces Fourth Quarter and Full Year 2015 Operating Results and Increase to Common Dividend ? Record annual earnings of $35.5 million for 2015 ? First quarter 2016 common stock dividend increased to $0.15 per

January 5, 2016 EX-99.1

MainSource Hires Karen Woods as EVP, Corporate Counsel & Chief Risk Officer

Exhibit 99.1 News Release Date: January 5, 2016 12:00pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 MainSource Hires Karen Woods as EVP, Corporate Counsel & Chief Risk Officer Archie M. Brown, President and CEO of MainSource Financial Group, Inc., announced today that Karen Woods joined the Company as Executive Vice President, Corporate Counsel

January 5, 2016 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): January 5, 2016 MainSource Financial Group, Inc.

December 14, 2015 CORRESP

MainSource Financial Group ESP

CORRESP 1 filename1.htm December 14, 2015 VIA EDGAR Era Anagnosti Accounting Branch Chief Legal Branch Chief Office of Financial Services United States Securities and Exchange Commission Washington, D.C. 20549 RE: MainSource Financial Group, Inc. Form 10-K for the Fiscal Year Ended December 31, 2014 Filed March 13, 2015 Definitive Proxy Statement on Schedule 14A Filed March 25, 2015 File No. 000-1

December 1, 2015 425

MainSource Financial Group 425 (Prospectus)

Filed by MainSource Financial Group, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: Cheviot Financial Corp. Commission File No. 001-35399 Set forth below are slides prepared by MainSource Financial Group, Inc. (?MainSource?) for a presentation given by executive officers of MainSource on November 30, 2015 to employees of Cheviot Savings Bank in connection with the prop

November 24, 2015 425

MainSource Financial Group 425 (Prospectus)

Filed by MainSource Financial Group Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: Cheviot Financial Corp.

November 24, 2015 EX-99.1

MainSource Financial Group, Inc. to Acquire Cheviot Financial Corp. November 24, 2015

EX-99.1 2 a15-239753ex99d1.htm EX-99.1 Exhibit 99.1 MainSource Financial Group, Inc. to Acquire Cheviot Financial Corp. November 24, 2015 We will achieve our vision by: Forward Looking Statement Disclosure This presentation contains comments or information that constitute forward-looking statements (within the meaning of the Private Securities Litigation Reform Act of 1995) that are based on curre

November 24, 2015 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

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): November 24, 2015 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 Or

November 24, 2015 EX-99.1

MainSource Financial Group, Inc. to Acquire Cheviot Financial Corp. November 24, 2015

Exhibit 99.1 MainSource Financial Group, Inc. to Acquire Cheviot Financial Corp. November 24, 2015 We will achieve our vision by: Forward Looking Statement Disclosure This presentation contains comments or information that constitute forward-looking statements (within the meaning of the Private Securities Litigation Reform Act of 1995) that are based on current expectations that involve a number o

November 24, 2015 EX-99.1

November 24, 2015 8:00 a.m. EST

Exhibit 99.1 Date: November 24, 2015 8:00 a.m. EST Contact: Archie Brown, Jr. President and CEO Mark T. Reitzes, President and CEO MainSource Financial Group, Inc. Cheviot Financial Corp. 812-663-6734 513-661-0457 NEWS RELEASE MainSource Financial Group to Significantly Expand its Cincinnati Presence with the Acquisition of Cheviot Financial Corp. GREENSBURG, IN and CINCINNATI, OH.?(PR Newswire)?

November 24, 2015 425

MainSource Financial Group 8-K (Prospectus)

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): November 24, 2015 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 Or

November 24, 2015 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

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): November 23, 2015 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 Or

November 24, 2015 EX-10.1

VOTING AGREEMENT

Exhibit 10.1 VOTING AGREEMENT Each of the undersigned directors and executive officers of Cheviot Financial Corp. (?Cheviot?) hereby agrees in his individual capacity as a shareholder to vote his shares of Cheviot Common Stock that are registered in his personal name and not in a fiduciary capacity (and agrees to use his reasonable efforts to cause all additional shares of Cheviot Common Stock own

November 24, 2015 425

MainSource Financial Group 8-K (Prospectus)

425 1 a15-2397518k.htm 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): November 23, 2015 MainSource Financial Group, Inc. (Exact name of registrant as specified in its charter) Indiana 0-12422 35-1562245 State or Other Jurisdic

November 24, 2015 EX-2.1

AGREEMENT AND PLAN OF MERGER BY AND BETWEEN MAINSOURCE FINANCIAL GROUP, INC. CHEVIOT FINANCIAL CORP. NOVEMBER 23, 2015

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER BY AND BETWEEN MAINSOURCE FINANCIAL GROUP, INC. AND CHEVIOT FINANCIAL CORP. NOVEMBER 23, 2015 TABLE OF CONTENTS ARTICLE I CERTAIN DEFINITIONS 2 1.1. Certain Definitions 2 ARTICLE II THE MERGER 11 2.1. Merger 11 2.2. Closing; Effective Time 11 2.3. Articles of Incorporation and Bylaws 11 2.4. Directors and Officers of Surviving Company 11 2.5. Additional Dir

November 24, 2015 EX-99.1

November 24, 2015 8:00 a.m. EST

Exhibit 99.1 Date: November 24, 2015 8:00 a.m. EST Contact: Archie Brown, Jr. President and CEO Mark T. Reitzes, President and CEO MainSource Financial Group, Inc. Cheviot Financial Corp. 812-663-6734 513-661-0457 NEWS RELEASE MainSource Financial Group to Significantly Expand its Cincinnati Presence with the Acquisition of Cheviot Financial Corp. GREENSBURG, IN and CINCINNATI, OH.—(PR Newswire)—

November 24, 2015 EX-10.1

VOTING AGREEMENT

Exhibit 10.1 VOTING AGREEMENT Each of the undersigned directors and executive officers of Cheviot Financial Corp. (“Cheviot”) hereby agrees in his individual capacity as a shareholder to vote his shares of Cheviot Common Stock that are registered in his personal name and not in a fiduciary capacity (and agrees to use his reasonable efforts to cause all additional shares of Cheviot Common Stock own

November 24, 2015 425

MainSource Financial Group 425 (Prospectus)

Filed by MainSource Financial Group, Inc. Pursuant to Rule 425 under the Securities Act of 1933 Subject Company: Cheviot Financial Corp. Commission File No. 001-35399 Set forth below is a letter prepared by MainSource Financial Group, Inc. (?MainSource?) to employees of Cheviot Savings Bank in connection with the proposed merger between MainSource and Cheviot Financial Corp. (?Cheviot?). November

November 24, 2015 EX-2.1

Agreement and Plan of Merger, dated November 23, 2015, by and between MainSource Financial Group, Inc. and Cheviot Financial Corp. (incorporated by reference to Exhibit 2.1 to the Report on Form 8‑K of the registrant filed on November 24, 2015 with the Commission (Commission File No. 0‑12422)).

Exhibit 2.1 AGREEMENT AND PLAN OF MERGER BY AND BETWEEN MAINSOURCE FINANCIAL GROUP, INC. AND CHEVIOT FINANCIAL CORP. NOVEMBER 23, 2015 TABLE OF CONTENTS ARTICLE I CERTAIN DEFINITIONS 2 1.1. Certain Definitions 2 ARTICLE II THE MERGER 11 2.1. Merger 11 2.2. Closing; Effective Time 11 2.3. Articles of Incorporation and Bylaws 11 2.4. Directors and Officers of Surviving Company 11 2.5. Additional Dir

November 17, 2015 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): November 17, 2015 MainSource Financial Group, Inc.

November 17, 2015 EX-99.1

MainSource Financial Group — NASDAQ, MSFG Fourth Quarter Dividend Declared

Exhibit 99.1 Date: November 17, 2015 3:00 p.m. EST Contact: Archie Brown, Jr. President and CEO MainSource Financial Group, Inc. 812-663-6734 NEWS RELEASE MainSource Financial Group ? NASDAQ, MSFG Fourth Quarter Dividend Declared Greensburg, Indiana (NASDAQ: MSFG) ? MainSource Financial Group?s Board of Directors announced today that the Company declared a fourth quarter common dividend of $0.14 p

November 6, 2015 10-Q

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2015 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINA

Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2015 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC.

October 23, 2015 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): October 19, 2015 MainSource Financial Group, Inc.

October 22, 2015 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): October 22, 2015 MainSource Financial Group, Inc.

October 22, 2015 EX-99.1

MAINSOURCE FINANCIAL GROUP (Dollars in thousands except per share data)

Exhibit 99.1 News Release Date: October 22, 2015 4:00 pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group - NASDAQ, MSFG - Announces Earnings for the Third Quarter of 2015 · Net income of $9.1 million · Earnings Per Share of $0.42 · Completed acquisition of five branches from Old National Bank · ROA of 1.10% · Tangible Comm

September 22, 2015 EX-24

Exhibit 24 POWER OF ATTORNEY Know all by these presents that the undersigned hereby constitutes and appoints each of James M. Anderson, and Denise R. Manus, signing singly, the undersigned’s true and lawful attorney-in-fact to: (1) Execute for and on

Exhibit 24 Exhibit 24 POWER OF ATTORNEY Know all by these presents that the undersigned hereby constitutes and appoints each of James M.

August 17, 2015 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): August 17, 2015 MainSource Financial Group, Inc.

August 17, 2015 EX-99.1

MainSource Financial Group Declares Third Quarter Dividend and Completes Acquisition of Five Branches from Old National Bank

Exhibit 99.1 Date: August 17, 2015, 4:00 p.m.. E.S.T. Contact: Archie M. Brown, Jr. President & CEO, MainSource Financial Group, Inc. 812-663-6734 NEWS RELEASE MainSource Financial Group Declares Third Quarter Dividend and Completes Acquisition of Five Branches from Old National Bank Greensburg, Indiana (NASDAQ:MSFG) (“MainSource” or the “Company”) MainSource Financial Group Board of Directors ann

August 6, 2015 10-Q

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2015 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2015 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC.

August 6, 2015 EX-10.3

Form of Restricted Stock Award Agreement under the MainSource Financial Group, Inc. 2015 Stock Incentive Plan (incorporated by reference to Exhibit 10.3 to the Report on Form 10-Q of the registrant filed on August 6, 2015 with the Commission (Commission File No. 0-12422)).*

Exhibit 10.3 RESTRICTED STOCK AWARD AGREEMENT UNDER THE MAINSOURCE FINANCIAL GROUP, INC. 2015 STOCK INCENTIVE PLAN Notice of Grant The Grantee named below has been granted an Award of Restricted Stock of the Company, subject to the terms and conditions of the Plan and this Award Agreement (the “Agreement”). 1. Grantee: 2. Grant Date: 3. Number of Shares of Restricted Stock: (the “Restricted Stock”

July 24, 2015 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): July 20, 2015 MainSource Financial Group, Inc.

July 24, 2015 EX-99.1

Anthem’s Erin Hoeflinger Appointed to Board of Directors for MainSource Financial Group

Exhibit 99.1 News Release Date: July 24, 2015 12:00pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 Anthem’s Erin Hoeflinger Appointed to Board of Directors for MainSource Financial Group Archie M. Brown, President and CEO of MainSource Financial Group, Inc., announced today that Erin Hoeflinger, President of Anthem Blue Cross and Blue Shield in O

July 22, 2015 EX-99.1

MAINSOURCE FINANCIAL GROUP (Dollars in thousands except per share data)

Exhibit 99.1 News Release Date: July 22, 2015 4:00pm EST From: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. | 812-663-6734 MainSource Financial Group - NASDAQ, MSFG - Announces Record Earnings for the Second Quarter of 2015 ? Net income of $9.7 million ? Earnings Per Share of $0.44 ? ROA of 1.21% ? Tangible Common Equity Ratio of 9.2% Greensburg, Indiana, Archie M. Brown

July 22, 2015 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 a15-1604118k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): July 22, 2015 MainSource Financial Group, Inc. (Exact name of registrant as specified in its charter) Indiana (State or other jurisdiction of incorporation) 0

June 26, 2015 11-K

MainSource Financial Group 11-K

Table of Contents SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K ANNUAL REPORT PURSUANT TO SECTION 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2014 Commission file number 333-58295 MAINSOURCE FINANCIAL GROUP, INC. 401 (K) AND EMPLOYEE STOCK OWNERSHIP PLAN (Full title of the plan) MAINSOURCE FINANCIAL GROUP, INC. (Name of issuer of the se

May 26, 2015 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): May 26, 2015 MainSource Financial Group, Inc.

May 26, 2015 EX-99.1

Second Quarter Dividend Declared MainSource Financial Group — NASDAQ, MSFG

Exhibit 99.1 Date: May 26, 2015 3:00 p.m. EST Contact: Archie Brown, Jr. President and CEO MainSource Financial Group, Inc. 812-663-6734 NEWS RELEASE Second Quarter Dividend Declared MainSource Financial Group — NASDAQ, MSFG Greensburg, Indiana (NASDAQ: MSFG) — MainSource Financial Group’s Board of Directors announced today that the Company declared a second quarter common dividend of $0.13 per sh

May 8, 2015 EX-10.1

MainSource Finanacial Group, Inc. 2015 Stock Incentive Plan, effective January 1, 2015 (incorporated by reference to Exhibit 10.1 to the Report on Form 10-Q of the registrant filed on May 8, 2015 with the Commission (Commission File No. 0-12422)).*

EXHIBIT 10.1 MAINSOURCE FINANCIAL GROUP, INC. 2015 STOCK INCENTIVE PLAN (Effective as of January 1, 2015) Krieg DeVault LLP One Indiana Square, Suite 2800 Indianapolis, IN 46204-2079 www.kriegdevault.com TABLE OF CONTENTS Page SECTION 1 PURPOSE AND DURATION 1 1.1. Establishment of the Plan 1 1.2. Purposes of the Plan 1 1.3. Definitions 1 SECTION 2 ADMINISTRATION 6 2.1. The Committee 6 2.2. Authori

May 8, 2015 EX-10.2

Form of Performance Share Unit Award Agreement under the MainSource Financial Group, Inc. 2015 Stock Incentive Plan (incorporated by reference to Exhibit 10.2 to the Report on Form 10-Q of the registrant filed on May 8, 2015 with the Commission (Commission File No. 0-12422)).*

EXHIBIT 10.2 PERFORMANCE SHARE UNIT AWARD AGREEMENT UNDER THE MAINSOURCE FINANCIAL GROUP, INC. 2015 STOCK INCENTIVE PLAN Notice of Grant 1. Grantee: 2. Grant Date: , 2015 3. Number of Performance Share Units: (the “Performance Share Units” or “PSUs”) This Agreement is between MainSource Financial Group, Inc., an Indiana corporation (the “Company”), and the Grantee named above, in accordance with t

May 8, 2015 10-Q

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2015 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIA

Table of Contents SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2015 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC.

May 5, 2015 S-8

MainSource Financial Group S-8

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 MAINSOURCE FINANCIAL GROUP, INC. (Exact name of registrant as specified in its charter) Indiana 35-1562245 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 2105 N. State Road 3 Bypass, Greensburg, Indiana 47240 (

May 5, 2015 EX-24.1

POWER OF ATTORNEY

EXHIBIT 24.1 POWER OF ATTORNEY The officers and directors whose signatures appear below hereby constitute Archie M. Brown, Jr. and James M. Anderson, either one of whom may act, as their true and lawful attorneys-in-fact, with full power to sign on their behalf individually and in each capacity stated below and to file one or more registration statements on Form S-8 and all amendments and post-eff

May 5, 2015 8-K

Submission of Matters to a Vote of Security Holders

8-K 1 a15-1077918k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 29, 2015 MainSource Financial Group, Inc. (Exact name of registrant as specified in its charter) Indiana (State or other jurisdiction of incorporation)

April 30, 2015 8-K

MainSource Financial Group 8-K (Current Report/Significant Event)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 29, 2015 MainSource Financial Group, Inc.

April 30, 2015 EX-99.1

MainSource FINANCIAL GROUP Meeting the financial needs of our customers...for life!

Exhibit 99.1 MainSource FINANCIAL GROUP Meeting the financial needs of our customers...for life! Welcome 2015 Annual Meeting of Shareholders Archie M. Brown, Jr., Chairman Introduction of Director Nominees Charles J. Thayer Kathleen L. Bardwell William G. Barron Brian J. Crall D.J. Hines Thomas M. O’Brien MainSource Financial Group Proposal 1: Election of Directors Lawrence R. Rueff, DVM John G. S

April 23, 2015 EX-99.1

MAINSOURCE FINANCIAL GROUP — NASDAQ, MSFG — Announces First Quarter 2015 Financial Results

Exhibit 99.1 DATE: April 23, 2015 4:00 p.m. E.S.T. CONTACT: Archie M. Brown, Jr. President and CEO MainSource Financial Group, Inc. 812-663-6734 MAINSOURCE FINANCIAL GROUP ? NASDAQ, MSFG ? Announces First Quarter 2015 Financial Results Greensburg, Indiana, Archie M. Brown, Jr., President and Chief Executive Officer of MainSource Financial Group, Inc. (NASDAQ: MSFG), announced today the unaudited f

April 23, 2015 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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 23, 2015 MainSource Financial Group, Inc.

March 25, 2015 DEF 14A

MainSource Financial Group DEF 14A

Use these links to rapidly review the document TABLE OF CONTENTS TABLE OF CONTENTS Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

March 20, 2015 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 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): March 16, 2015 MainSource Financial Group, Inc.

March 13, 2015 10-Q/A

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 Amendment No. 1 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2014 COMMISSION FILE NUMBER 0-12422 MAIN

SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 Amendment No. 1 FORM 10-Q QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDED JUNE 30, 2014 COMMISSION FILE NUMBER 0-12422 MAINSOURCE FINANCIAL GROUP, INC. (Exact name of registrant as specified in its charter) INDIANA 35-1562245 (State or other jurisdiction of (IRS Employer i

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