Old Second Bancorp, Inc. Declares Cash Dividend, Payable on February 5, 2024

Old Second Bancorp, Inc. serves as the bank holding company for its wholly owned subsidiary bank, Old Second National Bank (the Bank). The Bank is a full-service banking business offering a range of deposit products, trust and wealth management services, lending services, and deposit services, including demand, NOW, money market, savings, time deposit and individual retirement accounts. It also offers commercial, industrial, consumer and real estate lending, including installment loans, agricultural loans, lines of credit, lease financing receivables and overdraft checking, and safe deposit operations. It provides variety of additional services to the needs of individual customers, such as the money orders, cashiers’ checks and foreign currency, direct deposit, discount brokerage, debit cards, credit cards, and other special services. It also provides complement of electronic banking services such as online and mobile banking and corporate cash management products.