Ginnie Mae REMIC Trust 2004-021 The Trust will issue the classes of securities listed in the table below. If you own exchangeable securities identified in the table, you can exchange them for the corresponding MX Securities, and vice versa. Class of REMIC Securities Original Principal Balance(2) Interest Rate Principal Type(3) Interest Type(3) Final Distribution Date(4) CUSIP Number Security Group 1 GA...................................... $25,340,000 5.0% SUP FIX October 2032 38374FV76 GB...................................... 5,000,000 5.0 SUP FIX March 2033 38374FV84 GC...................................... 780,000 5.0 SUP FIX March 2033 38374FV92 GD  .................................... 5,070,000 5.0 SUP FIX August 2033 38374FW26 GE...................................... 10,970,000 5.0 SUP FIX April 2034 38374FW34 PA(1) ................................ 40,860,000 5.0 PAC I FIX June 2025 38374FW42 PB(1)................................ 49,590,000 5.0 PAC I FIX May 2030 38374FW59 PC(1)................................ 37,810,000 5.0 PAC I FIX April 2033 38374FW67 PD ...................................... 14,910,000 5.0 PAC I FIX April 2034 38374FW75 YA ...................................... 3,180,000 5.0 PAC II FIX November 2033 38374FW83 YB ...................................... 1,530,000 5.0 PAC II FIX January 2034 38374FW91 YC ...................................... 2,100,000 5.0 PAC II FIX February 2034 38374FX25 YD...................................... 2,860,000 5.0 PAC II FIX April 2034 38374FX33 Security Group 2 A  ........................................ 100,000,000 5.0 SEQ FIX November 2031 38374FX41 B  ........................................ 18,729,600 5.0 SEQ FIX April 2034 38374FX58 Residual R  ........................................ 0 0.0 NPR NPR April 2034 38374FX66 (1)  These Securities may be exchanged for MX Securities described in Schedule I. (2)  Subject to increase as described under "Increase in Size" in this Supplement. (3)  As defined under "Class Types" in Appendix I to the Base Offering Circular. (4)  See  "Yield,  Maturity  and  Prepayment  Considerations – Final  Distribution  Date"  in  this Supplement. B-16