Chicago-based Signature Bank is a boutique, full-service commercial bank focused exclusively on serving the needs of privatel ... y owned businesses and their owners. Signature Bank offers Chicago-area businesses a comprehensive suite of commercial lending, commercial banking, treasury management and personal banking services, with a specialty in commercial and industrial lending for mid-market companies and emerging digital startups. Signature Bank is committed to building personal relationships with its clients, to provide banking solutions that help businesses, individuals and communities to prosper. read more