On August 3, 2012, the Company amended the terms of restricted stock awards issued in August 2010 to Robert L. Chioini ("Chioini"), Thomas E. Klema ("Klema"), and Dr. Ajay Gupta ("Gupta"), the Company's Chief Executive Officer, Chief Financial Officer, and Chief Scientific Officer, respectively, and previously amended in March 2012. The amendments postpone the vesting of these awards (50,000 shares under Chioini's restricted stock award, 30,000 shares under Klema's restricted stock award, and 37,500 shares under Gupta's award) from August 6, 2012 to March 8, 2013. The remainder of the awards will vest on August 13, 2013, as provided in the original awards. The amendments were approved by the Compensation Committee of the Company's Board of Directors in accordance with the terms of the Company's Amended and Restated 2007 Long Term Incentive Plan and by the award holders in accordance with the relevant grant agreements.

The following exhibit is filed herewith:

Exhibit number        Exhibit Description
10.47                 Form of Amendment to 2010 Restricted Stock Award Agreement as
                      of August 3, 2012 with Robert L. Chioini, Thomas E. Klema,
                      and Dr. Ajay Gupta