NORTH ANDOVER, MA--(Marketwire - July 15, 2010) - LSB Corporation (NASDAQ: LSBX), parent of RiverBank, and People's United Financial, Inc. (NASDAQ: PBCT), parent of People's United Bank, today announced that they have signed a definitive agreement for People's United Financial, Inc. to acquire LSB Corporation in an all-cash transaction valued at approximately $96 million.