Ottawa Bancorp, Inc. operates as the bank holding company for OSB Community Bank, a savings bank that provides various financial services to individual and corporate customers in Illinois. The company offers saving, checking, money market, and interest-bearing accounts, as well as certificate of deposit; and business checking and municipal accounts. It provides business loans, including business and investor real estate loans, lines of credit, equipment/machinery/business vehicle term loans; first time homebuyer, auto, student, construction, and mortgage loans; and home equity lines of credit. In addition, the company offers cash management solutions, such as remote deposit capture, automated clearing house/payroll direct deposit, and merchant services; commercial leasing, business credit cards; digital banking; and additional services comprising notary, lamination, night depository, document faxing, money gift envelopes, safe deposit boxes, and coin counting. The company was formerly known as Ottawa Savings Bancorp, Inc. and changed its name to Ottawa Bancorp, Inc. in October 2016. The company was founded in 1871 and is based in Ottawa, Illinois.