UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM N-PX ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED MANAGEMENT INVESTMENT COMPANY Investment Company Act file number 811-21852 ------------ RIVERSOURCE RETIREMENT SERIES TRUST - -------------------------------------------------------------------------------- (Exact name of registrant as specified in charter) 50606 Ameriprise Financial Center, Minneapolis, Minnesota 55474 - -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip code) Leslie L. Ogg - 901 S. Marquette Avenue, Suite 2810, Minneapolis, MN 55402-3268 - -------------------------------------------------------------------------------- (Name and address of agent for service) Registrant's telephone number, including area code: (612) 330-9283 ----------------- Date of fiscal year end: 4/30 ---------------- Date of reporting period:5/18/06*-6/30/06 ---------------- * Start of operations RiverSource Retirement Plus 2010 Fund The Fund did not vote proxies relating to portfolio securities during the period covered by the report. - -------------------------------------------------------------------------------- RiverSource Retirement Plus 2015 Fund The Fund did not vote proxies relating to portfolio securities during the period covered by the report. - -------------------------------------------------------------------------------- RiverSource Retirement Plus 2020 Fund The Fund did not vote proxies relating to portfolio securities during the period covered by the report. - -------------------------------------------------------------------------------- RiverSource Retirement Plus 2025 Fund The Fund did not vote proxies relating to portfolio securities during the period covered by the report. - -------------------------------------------------------------------------------- RiverSource Retirement Plus 2030 Fund The Fund did not vote proxies relating to portfolio securities during the period covered by the report. - -------------------------------------------------------------------------------- RiverSource Retirement Plus 2035 Fund The Fund did not vote proxies relating to portfolio securities during the period covered by the report. - -------------------------------------------------------------------------------- RiverSource Retirement Plus 2040 Fund The Fund did not vote proxies relating to portfolio securities during the period covered by the report. - -------------------------------------------------------------------------------- RiverSource Retirement Plus 2045 Fund The Fund did not vote proxies relating to portfolio securities during the period covered by the report. SIGNATURES Pursuant to the requirements of 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. (Registrant) RiverSource Retirement Series Trust By (Signature and Title)* /s/ William F. Truscott ----------------------- William F. Truscott President Date August 28, 2006 * Print the name and title of each signing officer under his or her signature.