2008 Merger Ratio Information

The chart below shows the conversion ratios and net asset values (NAV) for the merger of select RiverSource® funds. Retail classes are shown, with a measurement date of March 14, 2008.

Target Merging Fund Class NAV* Acquiring Fund Class NAV* Conversion Ratio

Massachusetts Tax-Exempt Fund

A

$5.112

Tax Exempt High Income Fund

A

$4.186

1.221213569

Massachusetts Tax-Exempt Fund

B

$5.112

Tax Exempt High Income Fund

B

$4.185

1.221505376

Massachusetts Tax-Exempt Fund

C

$5.109

Tax Exempt High Income Fund

C

$4.187

1.220205398

Michigan Tax-Exempt Fund

A

$5.113

Tax Exempt High Income Fund

A

$4.186

1.221452461

Michigan Tax-Exempt Fund

B

$5.115

Tax Exempt High Income Fund

B

$4.185

1.222222222

Michigan Tax-Exempt Fund

C

$5.114

Tax Exempt High Income Fund

C

$4.187

1.221399570

Ohio Tax-Exempt Fund

A

$5.101

Tax Exempt High Income Fund

A

$4.186

1.218585762

Ohio Tax-Exempt Fund

B

$5.102

Tax Exempt High Income Fund

B

$4.185

1.219115890

Ohio Tax-Exempt Fund

C

$5.103

Tax Exempt High Income Fund

C

$4.187

1.218772391

International Equity Fund

A

$5.517

Disciplined International Equity Fund

A

$10.286

0.536360101

International Equity Fund

B

$5.439

Disciplined International Equity Fund

B

$10.177

0.534440405

International Equity Fund

C

$5.427

Disciplined International Equity Fund

C

$10.184

0.532894737

Value Fund

A

$3.536

Diversified Equity Fund Income Fund

A

$10.501

0.336729835

Value Fund

B

$3.428

Diversified Equity Fund Income Fund

B

$10.516

0.325979460

Value Fund

C

$3.433

Diversified Equity Fund Income Fund

C

$10.488

0.327326468

Fundamental Growth Fund

A

$4.98

Growth Fund

A

$28.137

0.176991150

Fundamental Growth Fund

B

$4.793

Growth Fund

B

$25.703

0.186476287

Fundamental Growth Fund

C

$4.8

Growth Fund

C

$25.639

0.187214790

Core Bond Fund

A

$9.477

Diversified Bond Fund

A

$4.793

1.977258502

Core Bond Fund

B

$9.483

Diversified Bond Fund

B

$4.793

1.978510328

Core Bond Fund

C

$9.487

Diversified Bond Fund

C

$4.794

1.978931998

*NAV = Net asset value

Columbia Management Investment Advisers, LLC and its affiliates do not offer tax or legal advice. Consult with your tax advisor or attorney regarding your specific situation.

This information is for use with concurrent or prior delivery of a fund prospectus. Investors should consider the investment objectives, risks, charges and expenses of a mutual fund carefully before investing. To learn more about this and other important information about each fund, download a free prospectus. The prospectus should be read carefully before investing.

Investment products are not federally or FDIC-insured, are not deposits or obligations of, or guaranteed by any financial institution, and involve investment risks including possible loss of principal and fluctuation in value.

RiverSource®, Seligman® and Threadneedle® mutual funds are distributed by Columbia Management Investment Distributors, Inc. (formerly known as RiverSource Fund Distributors, Inc.), member FINRA and managed by Columbia Management Investment Advisers, LLC (formerly known as RiverSource Investments, LLC). Threadneedle mutual funds are subadvised by Threadneedle International Limited, an affiliate of Columbia Management. Seligman is an offering brand of Columbia Management.