JOINT FILING AGREEMENTJoint Filing Agreement • May 15th, 2009 • Relational Investors LLC • State commercial banks
In accordance with Rule 13d-l(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the common stock, $0.001 par value, of Guaranty Bancorp and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filing. In evidence thereof, the undersigned hereby execute this Agreement this 15th day of May, 2009.
