This excerpt taken from the TPTX DEF 14A filed Apr 24, 2008.
Meetings of the Board
During the year ended December 31, 2007, the Board held a total of nine meetings. Each Board member attended 75% or more of the meetings of the Board and of the committees on which he served, which were held during the period for which he was a director or committee member. As required under applicable Nasdaq listing standards, in fiscal 2007, our independent directors met three times in regularly scheduled executive sessions at which only independent directors were present.