UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 13F FORM 13F COVER PAGE Report for the Calendar Year or Quarter Ended: December 31, 2001 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: Principal Financial Services, Inc Address: 711 High Street Des Moines, IA 50392 13F File Number: 28- 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 Roughton Title: Vice-President Phone: 515-248-3842 Signature, Place, and Date of Signing: Michael Roughton Des Moines, Iowa February 14, 2002 Report Type (Check only one.): [ ] 13F HOLDINGS REPORT. [X] 13F NOTICE. [ ] 13F COMBINATION REPORT. List of Other Managers Reporting for this Manager: Form 13F File Number: 28- Name: Principal Financial Group, Inc. I AM SIGNING THIS REPORT AS REQUIRED BY THE SECURITIES EXCHANGE ACT OF 1934.