Old Second Bancorp, Inc. operates as a holding company for Old Second National Bank that provides a range of banking services. It offers checking, demand, NOW, money market, savings, time deposit, individual retirement, and Keogh deposit accounts; lines of credit for working capital; lending for capital expenditures on manufacturing equipment; and lending to small business manufactures, service companies, and medical and dental entities, as well as specialty contractors. The company also provides commercial real estate loans; construction loans; residential real estate loans comprising residential first mortgages, second mortgages, and home equity line of credit mortgages; consumer loans, including motor vehicle, home improvement, and signature loans; and installment loans, student loans, agricultural loans, and overdraft checking. In addition, it offers safe deposit services; trust services; wealth management services; and travelerís checks, money orders, cashierís checks, foreign currency, direct deposits, discount brokerage, debit and credit cards, and other special services, as well as acquires the U.S. treasury notes and bonds. Further, the company provides electronic banking services, such as online and mobile banking; corporate cash management products, including remote and mobile deposits capture, investment sweep accounts, zero balance accounts, automated tax payments, automatic teller machines access, telephone banking, lockbox accounts, automated clearing house transactions, account reconciliation, controlled disbursement, detail and general information reporting, wire transfers, and vault services for currency and coin; and investment, agency and custodial services for individual, corporate, and not-for-profit clients. It provides its services through 25 banking locations primarily in Aurora, Illinois and its surrounding communities, as well as in the Chicago metropolitan area. The company was founded in 1982 and is based in Aurora, Illinois.