X0201 3 2003-12-19 0 0001081290 REDBACK NETWORKS INC RBAKQ 0001127939 ASPEN ADVISORS LLC 152 W. 57TH STREET 46TH FLOOR NEW YORK NY 10019 0 0 1 0 Redback Networks Inc. - common stock 20000000 I by Investment Advisor Aspen Advisors LLC, investment advisor to Aspen Partners (a series of Aspen Capital Partners, L.P.) and other clients, disclaims all beneficial ownership of the securities. Aspen Advisors LLC, by Nikos Hecht, its Managing Member 2003-12-22