Principal Schawk Stockholders

Principal Schawk Stockholders. Clarence W. Schawk, Marilyn G. Schawk, David A. Schawk and A. Alex Sarkisian, as Trustee of the David A. Schawk Family Trust dated 11/30/88 F/B/O Colleen Teryl Schawk, as Trustee of the David A. Schawk Family Trust dated 11/30/88 F/B/O Kara Elizabeth Schawk and as Trustee of the David A. Schawk Family Trust dated 11/30/88 F/B/O Kelly Lynn Schawk.