Power of Attorney Filing

This filing is a Power of Attorney appointment by John J. Drabik, a director of Cass Information Systems, Inc. The document designates specific individuals as attorneys-in-fact to execute and file SEC forms (3, 4, and 5) related to the reporting of securities transactions and ownership, in accordance with Section 16(a) of the Securities Exchange Act of 1934. The appointment is for the limited purpose of these filings and remains effective until Drabik is no longer required to file such forms, unless earlier revoked. The filing also includes a notary acknowledgment.