First Texoma National Bank, with assets of more than $200 million, is a chartered financial institution that provides retail financial products and services to customers in Bryan and Choctaw counties in Oklahoma and Grayson County in Texas. First Texoma offers customers a variety of financial products and services, including traditional deposit services, investments, ATM and debit cards, mortgages, business banking and Internet banking. The bank was founded in 1898 as The First National Bank In Durant. It has three offices in Durant, Okla., one in Boswell, Okla., and two branches in Sherman, Texas. First Texoma National Bank is a subsidiary of FNB Financial Services, a single bank holding company based in Durant. .