MainSource Financial Group, Inc. Announces the Passing of Board of Director Member Rick S. Hartman

  MainSource Financial Group, Inc. Announces the Passing of Board of Director
  Member Rick S. Hartman

Business Wire

GREENSBURG, Ind. -- May 23, 2012

MainSource Financial Group, Inc. (Nasdaq:MSFG) today announced that Rick S.
Hartman passed away on May 20, 2012 at the age of 56. Mr. Hartman had been a
member of the Board since 2000 and had served as Chair of the Audit Committee
for much of that time.

Mr. Archie M. Brown Jr., Chairman, President and Chief Executive officer
commented, “We are deeply saddened by the loss of our colleague Rick Hartman.
Rick was a dedicated and talented director whose leadership and insights have
been invaluable to our Board and company. More importantly Rick was a friend
and was known and appreciated for being kind and caring. On behalf of the
Board of Directors and the entire MainSource organization, I would like to
extend our heartfelt condolences to Rick’s wife and family at this most
difficult time.”

MainSource Financial Group is listed on the NASDAQ National Market (under the
symbol: “MSFG”) and is a community-focused, financial holding company with
assets of approximately $2.8 billion. The Company operates 80 full-service
offices throughout Indiana, Illinois, Kentucky and Ohio through its banking
subsidiary, MainSource Bank, headquartered in Greensburg, Indiana. Through its
non-banking subsidiary, MainSource Title LLC, the Company provides various
related financial services.

Contact:

MainSource Financial Group, Inc.
Archie Brown, Jr., President and CEO, 812-663-6734