Later this month, Northwest Savings Bank, with $1.4 billion in assets, is expected to become the nation's second-largest mutual holding company - and a textbook case of why a mutually-owned thrift decides against full-fledged stock ownership.

Headquartered in the northwestern corner of Pennsylvania in Warren, Northwest has 45 branch offices in the state and upstate New York. It is the fourth-largest savings bank in Pennsylvania.

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