Exhibit 5
Sirius XM Radio Inc.
1221 Avenue of the Americas
New York, NY 10020
March 23, 2009
Sirius XM Radio Inc.
1221 Avenue of the Americas
New York, NY 10020
Dear Sirs:
I am General Counsel of Sirius XM Radio Inc., a Delaware corporation
(the “Company”). This letter is being delivered in connection with the Registration Statement on
Form S-8 (the “Registration Statement”) filed by the Company with the Securities and Exchange
Commission under the Securities Act of 1933, as amended, relating to the registration by the
Company of 11,000,000 shares of Common Stock, par value $0.001 per share (the “Shares”), which may
be issued pursuant to the Sirius Satellite Radio Inc. 401(K) Savings Plan (the “Plan”).
I have examined the Registration Statement and the Plan. I also have examined the originals or
duplicates or certified or conformed copies of such records, agreements, documents and other
instruments and have made such other investigations as I have deemed relevant and necessary in
connection with the opinions expressed herein. In rendering the opinions below, I have assumed the
genuineness of all signatures, the legal capacity of natural persons, the authenticity of all
documents submitted to me as originals, the conformity to the original documents of all documents
submitted to be as duplicates or certified or conformed copies and the authenticity of the
originals of such latter documents.
Based upon the foregoing, and subject to the qualification and limitations stated herein, I am
of the opinion that the Shares to be issued by the Company pursuant to the Plan have been duly
authorized and, upon their issuance and delivery in accordance with the Plan, will be validly
issued, fully paid and non-assessable.
I do not express any opinion herein concerning any law other than the law of the State of New
York, the federal law of the United States and the Delaware General Corporation Law, (including the
statutory provisions, all applicable provisions of the Delaware Constitution and reported judicial
decisions interpreting the foregoing). I am not admitted to practice in the State of Delaware.
I hereby consent to the filing of this opinion as Exhibit 5 to the Registration Statement.
Very truly yours,
/s/ Patrick L. Donnelly, Esq.
Patrick L. Donnelly, Esq.
Executive Vice President,
General Counsel and Secretary