Formerly First National Bank & Trust Co., Sovereign Bank is the largest tribally-owned national bank in the United States. Committed to investing in its customers and the community, it has branches in Shawnee, Oklahoma City, Midwest City, Holdenville, Granite, Mangum, Canute and Lawton. With a capital structure of $2.5 million, the bank opened its doors on Oct. 29, 1984, and Citizen Potawatomi Nation purchased it in February 1989. Since its founding, Sovereign Bank has grown steadily through sound financial management practices and by investing time, energy, and resources in the communities we serve.