The article focuses on First Financial Bancorp in Ohio, a bank holding company within the meaning of the Bank Holding Company Act of 1956 (BHC Act), has requested the Board's approval under section 3 of the BHC Act to merge with MainSource Financial Group, Inc. and indirectly acquire MainSource Bank, both of Greensburg, Indiana. Topics include First Financial Bank also has applied under section 9 of the Federal Reserve Act to establish branches at main office and branches of MainSource Bank.