Sirius XM Radio (SIRI)

          On February 19, 2007, we entered into an Agreement and Plan of Merger with XM Radio Holdings Inc. Pursuant to the Merger Agreement, we and XM Radio will combine our businesses through a merger of XM Radio and a newly formed, wholly owned subsidiary of ours.

          Each of SIRIUS and XM has made customary representations and warranties and covenants in the Merger Agreement. The completion of the Merger is subject to various closing conditions, including obtaining approvals of certain of our and XM Radio’s stockholders and receiving certain regulatory and antitrust approvals (including from the FCC and under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended). The Merger is intended to qualify as a reorganization for federal income tax purposes.

          At the effective time of the Merger (the “Effective Time”), by virtue of the Merger and without any action on the part of any stockholder, each share of common stock of XM Radio (the “XM Common Stock”) issued and outstanding immediately prior to the Effective Time will generally be converted into the right to receive 4.6 shares of our common stock. Each share of Series A Convertible Preferred Stock of XM Radio issued and outstanding immediately prior to the Effective Time will be similarly converted at the Effective Time into the right to receive 4.6 shares of a newly-designated series of our preferred stock having substantially the same powers, designations, preferences, rights and qualifications, limitations and restrictions as the stock so converted.

           Mel Karmazin, our chief executive officer, will become chief executive officer of the combined company and Gary M. Parsons, chairman of the board of directors of XM Radio, will become chairman of the board of directors of the combined company. The combined company’s board of directors will consist of 12 directors, including Messrs. Karmazin and Parsons, four independent members designated by each of SIRIUS and XM Radio, as well as one representative of each of General Motors and American Honda.

          The Merger Agreement contains certain termination rights for both us and XM Radio. If the Merger Agreement is terminated under certain circumstances specified in the Merger Agreement, we or XM Radio, as the case may be, will be required to pay the other a termination fee of $175,000.

          Our Board of Directors and the Board of Directors of XM Radio have approved the Merger and the Merger Agreement.

          This description of the Merger Agreement does not purport to be complete and is qualified in its entirety by reference to the Merger Agreement, which is filed as Exhibit 2.1 to our Current Report on Form 8-K dated February 21, 2007.

          A special meeting of our stockholders is scheduled to be held in The Auditorium at the Equitable Center, 787 Seventh Avenue, New York, New York 10019, on November 13, 2007 at 9:00 a.m. The pending merger with XM Radio cannot be completed unless SIRIUS stockholders approve the amendment to our certificate of incorporation and the issuance of our capital stock. Information about the meeting, the merger and other business to be considered by our stockholders is contained in the Proxy Statement mailed to stockholders on or about October 9, 2007.

Pending Merger with XM Radio

          On February 19, 2007, we entered into an Agreement and Plan of Merger with XM Radio Holdings Inc. Pursuant to the Merger Agreement, we and XM Radio will combine our businesses through a merger of XM Radio and a newly formed, wholly owned subsidiary of ours.

          Each of SIRIUS and XM has made customary representations and warranties and covenants in the Merger Agreement. The completion of the Merger is subject to various closing conditions, including obtaining approvals of certain of our and XM Radio’s stockholders and receiving certain regulatory and antitrust approvals (including from the FCC and under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended). The Merger is intended to qualify as a reorganization for federal income tax purposes.

          At the effective time of the Merger (the “Effective Time”), by virtue of the Merger and without any action on the part of any stockholder, each share of common stock of XM Radio (the “XM Common Stock”) issued and outstanding immediately prior to the Effective Time will generally be converted into the right to receive 4.6 shares of our common stock. Each share of Series A Convertible Preferred Stock of XM Radio issued and outstanding immediately prior to the Effective Time will be similarly converted at the Effective Time into the right to receive 4.6 shares of a newly-designated series of our preferred stock having substantially the same powers, designations, preferences, rights and qualifications, limitations and restrictions as the stock so converted.

           Mel Karmazin, our chief executive officer, will become chief executive officer of the combined company and Gary M. Parsons, chairman of the board of directors of XM Radio, will become chairman of the board of directors of the combined company. The combined company’s board of directors will consist of 12 directors, including Messrs. Karmazin and Parsons, four independent members designated by each of SIRIUS and XM Radio, as well as one representative of each of General Motors and American Honda.

          The Merger Agreement contains certain termination rights for both us and XM Radio. If the Merger Agreement is terminated under certain circumstances specified in the Merger Agreement, we or XM Radio, as the case may be, will be required to pay the other a termination fee of $175,000.

          Our Board of Directors and the Board of Directors of XM Radio have approved the Merger and the Merger Agreement.

          This description of the Merger Agreement does not purport to be complete and is qualified in its entirety by reference to the Merger Agreement, which is filed as Exhibit 2.1 to our Current Report on Form 8-K dated February 21, 2007.

Pending Merger with XM Radio

          On February 19, 2007, we entered into an Agreement and Plan of Merger with XM Radio Holdings Inc. Pursuant to the Merger Agreement, we and XM Radio will combine our businesses through a merger of XM Radio and a newly formed, wholly owned subsidiary of ours.

          Each of SIRIUS and XM has made customary representations and warranties and covenants in the Merger Agreement. The completion of the Merger is subject to various closing conditions, including obtaining approvals of certain of our and XM Radio’s stockholders and receiving certain regulatory and antitrust approvals (including from the Federal Communications Commission and under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended). The Merger is intended to qualify as a reorganization for federal income tax purposes.

          At the effective time of the Merger (the “Effective Time”), by virtue of the Merger and without any action on the part of any stockholder, each share of common stock of XM Radio (the “XM Common Stock”) issued and outstanding immediately prior to the Effective Time will generally be converted into the right to receive 4.6 shares of our common stock. Each share of Series A Convertible Preferred Stock of XM Radio issued and outstanding immediately prior to the Effective Time will be similarly converted at the Effective Time into the right to receive 4.6 shares of a newly-designated series of our preferred stock having substantially the same powers, designations, preferences, rights and qualifications, limitations and restrictions as the stock so converted.

           Mel Karmazin, currently our chief executive officer, will become chief executive officer of the combined company and Gary M. Parsons, currently chairman of the board of directors of XM Radio, will become chairman of the board of directors of the combined company. The combined company’s board of directors will consist of 12 directors, including Messrs. Karmazin and Parsons, four independent members designated by each of SIRIUS and XM Radio, as well as one representative of each of General Motors and American Honda.

          The Merger Agreement contains certain termination rights for both us and XM Radio. If the Merger Agreement is terminated under certain circumstances specified in the Merger Agreement, we or XM Radio, as the case may be, will be required to pay the other a termination fee of $175,000.

          Our Board of Directors and the Board of Directors of XM Radio have approved the Merger and the Merger Agreement.

          This description of the Merger Agreement does not purport to be complete and is qualified in its entirety by reference to the Merger Agreement, which is filed as Exhibit 2.1 to the Current Report on Form 8-K dated February 21, 2007.

Pending Merger with XM Radio

          On February 19, 2007, we entered into an Agreement and Plan of Merger (the “Merger Agreement”) with newly XM Satellite Radio Holdings Inc. Pursuant to the Merger Agreement we and XM Radio will combine our businesses through a merger of XM Radio and a newly formed, wholly owned subsidiary of ours (the “Merger”).

          Each of SIRIUS and XM has made customary representations and warranties and covenants in the Merger Agreement. The completion of the Merger is subject to various closing conditions, including obtaining the approval of our and XM Radio’s stockholders and receiving certain regulatory and antitrust approvals (including from the Federal Communications Commission and under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended). The Merger is intended to qualify as a reorganization for federal income tax purposes.

          At the effective time of the Merger (the “Effective Time”), by virtue of the Merger and without any action on the part of any stockholder, each share of common stock of XM Radio (the “XM Common Stock”) issued and outstanding immediately prior to the Effective Time will generally be converted into the right to receive 4.6 shares

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