13F-HR 1 qtr2-2004_13f.txt FORM 13F HOLDING REPORT UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: 06/30/2004 Check here if Amendment [ ]; Amendment Number: This Amendment (Check only one.): [ ] is a restatement. [ ] adds new holdings entries. Institutional Investment Manager Filing this Report: Name: GAM USA Inc. Address: 135 East 57th Street 25th Floor New York, NY 10022 13F File Number: 28-7714 The institutional investment manager filing this report and the person by whom it is signed hereby represent that the person signing the report is authorized to submit it, that all information contained herein is true, correct and complete, and that it is understood that all required items, statements, schedules, lists, and tables, are considered integral parts of this form. Person Signing this Report on Behalf of Reporting Manager: Name: Michael J. Bessel Title: Associate Counsel Phone: 212-407-4766 Signature, Place, and Date of Signing: Michael J. Bessel New York, New York 07/20/04 Report Type (Check only one.): [ X] 13F HOLDINGS REPORT. [ ] 13F NOTICE. [ ] 13F COMBINATION REPORT. List of Other Managers Reporting for this Manager: I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE ACT OF 1934. FORM 13F SUMMARY PAGE Report Summary: Number of other Included Managers: 5 Form 13F Information Table Entry Total: 867 Form 13F Information Table Value Total: $2,334,153 List of other Included Managers No. 13F File Number Name 02 00-00000-000 GAM Hong Kong Limited HK 01 00-00000-000 GAM International Management Limited 04 00-00000-000 GAM Limited BM 05 00-00000-000 GAM London Limited GB 03 00-00000-000 GAM USA Inc US

GAM USA INC 13F-HR