UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13D UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 1) CD RADIO, INC. - -------------------------------------------------------------------------------- (Name of Issuer) COMMON STOCK, PAR VALUE $.001 PER SHARE - -------------------------------------------------------------------------------- (Title of Class of Securities) 125127100 - -------------------------------------------------------------------------------- (CUSIP Number) - -------------------------------------------------------------------------------- APOLLO MANAGEMENT IV, L.P. 1999 AVENUE OF THE STARS SUITE 1900 LOS ANGELES, CA 90067 (310) 201-4100 - -------------------------------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) DECEMBER 23, 1998 - -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of This Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(b)(3) or (4), check the following box: [ ] NOTE: Six copies of this statement, including all exhibits, should be filed with the Commission. See Rule 13d-1(a) for other parties to whom copies are to be sent. *The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page. The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act, but shall be subject to all other provisions of the Act (however, see the Notes). SCHEDULE 13D - ------------------------------------------ ---------------------------------- CUSIP No. 125127100 Page 2 of 6 Pages - ------------------------------------------ ---------------------------------- - ------------- ------------------------------------------------------------------ 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON APOLLO INVESTMENT FUND IV, L.P. 13-3985622 - ------------- ------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [x] (b) [ ] - ------------- ------------------------------------------------------------------ 3 SEC USE ONLY - ------------- ------------------------------------------------------------------ 4 SOURCE OF FUNDS* OO - ------------- ------------------------------------------------------------------ 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] - ------------- ------------------------------------------------------------------ 6 CITIZENSHIP OR PLACE ORGANIZATION DELAWARE - ------------- ------------------------------------------------------------------ 7 SOLE VOTING POWER 4,270,897 NUMBER OF ------- ---------------------------------------------------- 8 SHARED VOTING POWER SHARES 0 BENEFICIALLY ------- ---------------------------------------------------- 9 SOLE DISPOSITIVE POWER OWNED BY 4,270,897 EACH ------- ---------------------------------------------------- REPORTING 10 SHARED DISPOSITIVE POWER 0 PERSON WITH - ------------------- ------- ---------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,270,897 - ------------------- ------------------------------------------------------------ 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] - ------------------- ------------------------------------------------------------ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 18.4% - ------------------- ------------------------------------------------------------ 14 TYPE OF REPORTING PERSON* PN - ------------------- ------------------------------------------------------------ *SEE INSTRUCTIONS BEFORE FILLING OUT! INCLUDE BOTH SIDES OF THE COVER PAGE, REPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION. SCHEDULE 13D - ------------------------------------------ ---------------------------------- CUSIP No. 125127100 Page 3 of 6 Pages - ------------------------------------------ ---------------------------------- - ------------- ------------------------------------------------------------------ 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON APOLLO OVERSEAS PARTNERS IV, L.P. 98-0191324 - ------------- ------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [x] (b) [ ] - ------------- ------------------------------------------------------------------ 3 SEC USE ONLY - ------------- ------------------------------------------------------------------ 4 SOURCE OF FUNDS* OO - ------------- ------------------------------------------------------------------ 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] - ------------- ------------------------------------------------------------------ 6 CITIZENSHIP OR PLACE ORGANIZATION CAYMAN ISLANDS - ------------- ------------------------------------------------------------------ 7 SOLE VOTING POWER 229,103 NUMBER OF ------- ---------------------------------------------------- 8 SHARED VOTING POWER SHARES 0 BENEFICIALLY ------- ---------------------------------------------------- 9 SOLE DISPOSITIVE POWER OWNED BY 229,103 EACH ------- ---------------------------------------------------- 10 SHARED DISPOSITIVE POWER REPORTING 0 PERSON WITH - ------------------- ------- ---------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 229,103 - ------------------- ------------------------------------------------------------ 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] - ------------------- ------------------------------------------------------------ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.0% - ------------------- ------------------------------------------------------------ 14 TYPE OF REPORTING PERSON* PN - ------------------- ------------------------------------------------------------ *SEE INSTRUCTIONS BEFORE FILLING OUT! INCLUDE BOTH SIDES OF THE COVER PAGE, REPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION SCHEDULE 13D - ------------------------------------------ ---------------------------------- CUSIP No. 125127100 Page 4 of 6 Pages - ------------------------------------------ ---------------------------------- - ------------- ------------------------------------------------------------------ 1 NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON APOLLO ADVISORS IV, L.P. 13-3983717 - ------------- ------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [x] (b) [ ] - ------------- ------------------------------------------------------------------ 3 SEC USE ONLY - ------------- ------------------------------------------------------------------ 4 SOURCE OF FUNDS* OO - ------------- ------------------------------------------------------------------ 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e) [ ] - ------------- ------------------------------------------------------------------ 6 CITIZENSHIP OR PLACE ORGANIZATION DELAWARE - ------------- ------------------------------------------------------------------ 7 SOLE VOTING POWER 4,500,000 NUMBER OF ------- ---------------------------------------------------- 8 SHARED VOTING POWER SHARES 0 BENEFICIALLY ------- ---------------------------------------------------- 9 SOLE DISPOSITIVE POWER OWNED BY 4,500,000 EACH ------- ---------------------------------------------------- 10 SHARED DISPOSITIVE POWER REPORTING 0 PERSON WITH - ------------------- ------- ---------------------------------------------------- 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 4,500,000 - ------------------- ------------------------------------------------------------ 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES* [ ] - ------------------- ------------------------------------------------------------ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 19.4% - ------------------- ------------------------------------------------------------ 14 TYPE OF REPORTING PERSON* PN - ------------------- ------------------------------------------------------------ *SEE INSTRUCTIONS BEFORE FILLING OUT! INCLUDE BOTH SIDES OF THE COVER PAGE, REPONSES TO ITEMS 1-7 (INCLUDING EXHIBITS) OF THE SCHEDULE, AND THE SIGNATURE ATTESTATION This Amendment No. 1 amends the Schedule 13D originally filed on November 24, 1998 (the "Schedule 13D") by Apollo Investment Fund IV, L.P., a Delaware limited partnership ("AIFIV"), Apollo Overseas Partners IV, L.P., an exempted limited partnership registered in the Cayman Islands ("Overseas IV"), and Apollo Advisors IV, L.P., a Delaware limited partnership ("Advisors IV"), and relates to the common stock, par value $.001 per share (the "Common Stock") of CD Radio Inc., a Delaware corporation (the "Company") or securities convertible thereinto. Capitalized terms used without definition in this Amendment No. 1 shall have the respective meanings ascribed to them in the Schedule 13D. ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO SECURITIES OF THE ISSUER. Item 6 of the Schedule 13D is hereby amended by adding the following: On December 23, 1998, the parties to the Stock Purchase Agreement closed the First Purchase contemplated thereby. At such closing, AIFIV and Overseas IV purchased from the Company 1,281,269 shares of Series A Preferred Stock and 68,731 shares of Series A Preferred Stock, respectively, for an aggregate purchase price of $135,000,000.00. SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. December 31, 1998 APOLLO INVESTMENT FUND IV, L.P. By: Apollo Advisors IV, L.P., its General Partner By: Apollo Capital Management IV, Inc., its General Partner By: /s/ Michael D. Weiner ----------------------------------- Name: Michael D. Weiner Title: Vice President, Apollo Capital Management IV, Inc. APOLLO OVERSEAS PARTNERS IV, L.P. By: Apollo Advisors IV, L.P., its Managing General Partner By: Apollo Capital Management IV, Inc., its General Partner By: /s/ Michael D. Weiner ----------------------------------- Name: Michael D. Weiner Title: Vice President, Apollo Capital Management IV, Inc. APOLLO ADVISORS IV, L.P. By: Apollo Capital Management IV, Inc., its General Partner By: /s/ Michael D. Weiner ----------------------------------- Name: Michael D. Weiner Title: Vice President, Apollo Capital Management IV, Inc.