As filed with the Securities and Exchange Commission on September 25, 2007 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N - CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act File No. 811-04815 Ultra Series Funds 5910 Mineral Point Road Madison, WI 53705 (608) 238-5851 (Registrant's Exact Name, Address and Telephone Number) Pamela M. Krill, Esq. Associate General Counsel CUNA Mutual Group 5910 Mineral Point Road Madison, WI 53705 (Name and Address of Agent for Service) Copy to: Stephen E. Roth, Esq. Sutherland Asbill & Brennan LLP 1275 Pennsylvania Avenue, N.W. Washington, D. C. 20004-2415 ---------- Date of Fiscal Year End: December 31, 2006 Date of Reporting Period: December 31, 2006 EXPLANATORY NOTE The Registrant is refiling the following portions of its Form N-CSR for the reporting period ended December 31, 2006 (the "Report"): 1. Exhibit 12(a) - Code of Ethics 2. Exhibit 12(b) - Certification of the President and Treasurer of the Registrant. The remainder of this report is hereby incorporated by reference to the Report filed with the Securities and Exchange Commission on February 27, 2007 (File No. 811-04815). SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. ULTRA SERIES FUND BY: /s/ David P. Marks --------------------------------- David P. Marks President DATE: 2/20/07 Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. BY: /s/ David P. Marks --------------------------------- David P. Marks President, Ultra Series Fund DATE: 2/20/07 BY: /s/ Mary E. Hoffmann --------------------------------- Mary E. Hoffmann Treasurer, Ultra Series Fund DATE: 2/20/07 EXHIBIT INDEX Exhibit 12 (a) - Code of Ethics Exhibit 12(b)(i) - Certification of David P. Marks, President, Ultra Series Fund Exhibit 12(b)(ii) - Certification of Mary E. Hoffmann, Treasurer, Ultra Series Fund