Seligman Tech Spectrum Fund
CSX Announcement

Change of the Investment Manager and Distributor’s Name

On or about April 30, 2010 (the “Acquisition Date”), the Fund’s investment manager, RiverSource Investments, LLC (the “Investment Manager”) is expected to complete a purchase of the long-term asset management business of Columbia Management Advisors, LLC and its affiliates from Bank of America, N.A.  As a result of the purchase and effective as of the Acquisition Date, the Investment Manager will change its name to Columbia Management Investment Advisers, LLC.  The new address for the Investment Manager will be 100 Federal Street, Boston, MA 02110.  On that same date, the Fund’s distributor, RiverSource Fund Distributors, Inc. (the “Distributor”), will change its name to Columbia Management Investment Distributors, Inc.    The new address for the Distributor will be 100 Federal Street, Boston, MA 02110.

Change in the Fund’s Directors 

Christopher P. Keating intends to resign as a director of the Fund with effect as of the Acquisition Date.  As of the same date, Jeffrey F. Peters will be appointed as a director of the Fund.   Mr. Peters is part of the Ameriprise family of companies and will receive no compensation for serving as a director of the Fund.   The following is information about Mr. Peters with effect from the Acquisition Date:

Jeffrey F. Peters (United States) Senior Vice President and Head of Institutional Distribution of the Investment Manager. Prior to joining the Ameriprise organization in 2010, he was employed by an asset management subsidiary of the Bank of America (then known as Columbia Management Advisors, LLC) from 2007 to 2010, most recently as a Managing Director and Head of Global Institutional Distribution. Prior to that, he was employed by Putnam Investments from 1999 to 2007 where he held numerous positions including Senior Managing Director and Head of International Business.  He also served as Putnam Investments’ Chief Operating Officer of International Business and Managing Director of Corporate Development.  Mr. Peters has been a member of the investment community since 1987.  He earned a B.A. degree in Economics from Princeton University and an M.B.A. degree from Harvard Graduate School of Business.

If you require any further information in relation to the above, please contact Paul B. Goucher  of Ameriprise Financial, Inc. 100 Park Avenue, New York, NY 10017 at Office: 212.850.1302/ Fax: 212.922.5731 or