Northwest Bancshares, Inc. is a bank holding company that operates through its subsidiary, Northwest Bank, providing a comprehensive range of banking and financial services across four states. The company generates revenue primarily through net interest income—the spread between interest earned on loans and securities and interest paid on deposits and borrowings—and supplementary noninterest income from service fees, trust and investment management, mortgage banking, and other banking services. Its loan portfolio is roughly balanced between personal banking (residential mortgages, home equity and vehicle loans) and commercial banking (commercial real estate and commercial loans), while its deposit base and loan assets are concentrated in Pennsylvania and New York.