Cass Information Systems | 8,250 followers on LinkedIn. A leading provider of integrated information and payment management solutions. | Cass Information Systems, Inc. is a leading provider of integrated information and payment management solutions. Cass enables enterprises to achieve visibility, control and efficiency in their supply chains, facilities and other operations. Disbursing over $90 billion annually on behalf of clients, and with total assets of $2.3 billion, Cass is uniquely supported by Cass Commercial Bank.