CNB Bank Shares, Inc. operates as the bank holding company for CNB Bank & Trust. N.A. that provides banking services to individual and corporate customers in south-central Illinois, suburban southwestern Chicago, and the St. Louis metropolitan area. The company offers checking and savings accounts; certificates of deposits; personal e-services comprising digital banking and Zelle person to person payments; and additional services, such as INFOLINE 24-hour bank-by-phone, debit cards, overdraft services, night depository services, safe deposit boxes, gift cards, wire transfers, cashier's checks, and notary services. It also provides business banking products, including checking and savings accounts; business e-services comprising digital banking, BillPay, and eStatements; business additional services; treasury management that includes disbursement and collection services; and beneficial ownership filing services. In addition, the company offers loan products, such as agricultural lending options that include lines of credit, equipment loans, real estate and land, and farm service agency loans; personal lending products comprising mortgage, home equity, and construction loans, as well as lines of credit; College Ave student loans; business and commercial lending; and mortgage specials. Further, it provides wealth management, farm management, retirement plan, investment management, fiduciary, and comprehensive planning services; and insurance products, such as auto, home, renters, pet, business, and disaster insurance, as well as workers compensation and ID protection. CNB Bank Shares, Inc. was founded in 1854 and is headquartered in Carlinville, Illinois.