Investor Information http://www.pdrx.com/investors.htm Corporate Headquarters http://www.pdrx.com/index.htm 727 North Ann Arbor Oklahoma City, OK 73127 T - 1-405-942-3040 F - 1-405-942-5471 Common Stock Stock Symbol: PDRX OTC Bulletin Board Shareholders Service Line 1-800-962-4284 Stock Transfer Agent For all current Stock Certificate Holders: please make sure that you keep Computershare updated as to your current address. If Computershare is unable to contact you as a Stock Certificate Holder, your property will be turned over to the state as unclaimed property. Computershare 350 Indiana Street Suite 750 Golden, CO 80401 T - 1-303-262-0678 www.computershare.com Stock Summary http://finance.yahoo.com/q?s=pdrx Independent Accountants Grant Thorton Oklahoma City, OK