This excerpt taken from the SIRI DEF 14A filed Apr 30, 2009.
How often did the board meet during 2008?
During 2008, there were nine meetings of our board of directors and one written consent in lieu of a meeting. Each director, other than Leon Black, attended more than 75% of the total number of meetings of the board and meetings held by committees on which he or she served. Directors are encouraged to attend the annual meeting of stockholders. Ms. Amble and Messrs. Gilberti, Shaw, Parsons and Karmazin attended our 2008 annual meeting of stockholders.