JOINT FILING AGREEMENTJoint Filing Agreement • March 15th, 2012 • AB Value Management LLC • Services-management consulting services
In accordance with Rule 13d-1(k)(1)(iii) 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 13G dated March 15, 2012 (including amendments thereto) with respect to the Common Stock of Mastech Holdings, Inc. This Joint Filing Agreement shall be filed as an Exhibit to such Statement.
