1st Source Corporation is a bank holding company. The Company, through its subsidiaries, provides a range of financial products and services. It is engaged in commercial banking. 1st Source Bank (Bank), its banking subsidiary, offers commercial and consumer banking services, trust and wealth advisory services, and insurance to individual and business clients. The Bank offers a range of consumer and commercial banking services through its lending operations, retail branches and fee based businesses. It provides commercial, small business, agricultural, and real estate loans to primarily business clients mainly located within its regional market area. It provides a range of consumer banking products and services through its banking centers and at 1stsource.com. It also offers insurance products through 1st Source Insurance offices. It also provides a range of trust, investment, agency, and custodial services for individual, corporate and not-for-profit clients.