This excerpt taken from the DNDN 10-K filed Apr 13, 2007.
Option Exercises and Stock Vested
None of the named executive officers exercised stock options during 2006. Dr. Hershberg was the only named executive officer to receive shares upon the vesting of a restricted stock award in the amount of 11,250 shares, at a realized value of $50,900. This represented the release to Dr. Hershberg of his restricted stock award due to his resignation of employment.