Where is the headquarters of Simmons Bank?

American State Bank & Trust of Williston 14 Andover State Bank 1 Auburn State Bank 19 Bank of Brookhaven 12 Bank of St. Francisville 23 Commerce Bank, TX 3 Custer Federal State Bank 2 Farmers & Traders Bank of Campton 13 FIRST National Association National Bank NORTH 4 First National Bank in Ord 4 First State Bank & Trust 2 Grand Valley Bank 4 Hodge Bank & Trust 3 HOMEBANK 11 Horatio State Bank 5 Northeast Security Bank 2 Stock Exchange Bank 7 Wadena State Bank 9 Washington State Bank 4 WEST AL B&TC 5