SIRIUS , XM and their respective directors and executive officers and other persons may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction . Information regarding SIRIUS ' directors and executive officers is available in its Annual Report on Form 10-K for the year ended December 31 , 2006 , which was filed with the SEC on March 1 , 2007 , and its proxy statement for its 2007 annual meeting of stockholders , which was filed with the SEC on April 23 , 2007 , and information regarding XM 's directors and executive officers is available in XM 's Annual Report on Form 10-K , for the year ended December 31 , 2006 , which was filed with the SEC on March 1 , 2007 and its proxy statement for its 2007 annual meeting of stockholders , which was filed with the SEC on April 17 , 2007 . Other information regarding the participants in the proxy solicitation and a description of their direct and indirect interests , by security holdings or otherwise , is contained in the preliminary Joint Proxy Statement / Prospectus filed with the SEC .