This excerpt taken from the SIRI DEF 14A filed Apr 30, 2009.
Compliance with Section 409A of the Code
To the extent applicable, it is intended that the Plan and any grants made thereunder comply with the provisions of Section 409A of the Code, so that the income inclusion provisions of Section 409A(a)(1) of the Code do not apply to the participants. The Plan and any grants made under the Plan will be administered in a manner consistent with this intent. Any reference in the Plan to Section 409A of the Code will also include any regulations or any other formal guidance promulgated with respect to such Section by the U.S. Department of the Treasury or the Internal Revenue Service.