MainSource Financial Group Promotes Tressler to Senior Vice President, Chief Banking Officer

GREENSBURG, IN, Jun 30 (MARKET WIRE) --
Archie M. Brown, Jr., President and CEO of MainSource Financial Group,
Inc. (NASDAQ: MSFG) (the "Company"), is pleased to announce the promotion
of Daryl R. Tressler to Chief Banking Officer for MainSource Financial
Group. Mr. Tressler currently serves as Chairman, President and CEO of
the lead affiliate, MainSource Bank. In his new position, he will oversee
all MainSource Bank affiliates and locations throughout Indiana,
Illinois, Ohio, and Kentucky, in addition to retaining his position
within MainSource Bank. His responsibilities include overseeing the
administration of all affiliate activities to achieve sales and other
strategic objectives.

Mr. Tressler began his career with MainSource in 1973. He has served in
various positions, eventually leading him to President and CEO of the lead
affiliate, MainSource Bank. He is a native of Decatur County, where he
continues to reside with his wife, Carol. He has served the community over
the years by holding leadership positions in numerous not for profit
organizations.

Mr. Brown commented, "Daryl has been a cornerstone in MainSource Financial
Group's success throughout the years. His service to this company, and the
community, has provided guidance and leadership that has resulted in
tremendous growth for our company. He continues to exemplify the qualities
for which MainSource is known, and allowing him to oversee all of our
banking operations is a natural fit. We are blessed to have such a
talented and trustworthy individual leading this charge."

Mr. Tressler commented, "I am pleased to accept this new position and look
forward to managing our banking locations through these challenging
times."

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 $2.9 billion. The Company operates 85 banking
offices through its three banking subsidiaries, MainSource Bank,
Greensburg, Indiana, MainSource Bank of Illinois, Kankakee, Illinois, and
MainSource Bank - Ohio, Troy, Ohio. Through its non-banking subsidiaries,
MainSource Insurance LLC, and MainSource Title LLC, the Company and its
banking subsidiaries provide various related financial services.

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

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