0001193125-25-281775 Sample Contracts
EXHIBIT A JOINT FILING AGREEMENTJoint Filing Agreement • November 14th, 2025 • Harraden Circle Investments, LLC • Blank checks
The undersigned hereby agree that the statement on Schedule 13G with respect to the Shares of Columbus Acquisition Corp is, and any amendments thereto (including amendments on Schedule 13D) signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.