Calamos Select Fund

10k Performance is for the Fund's Class C shares at net asset value and does not include the Fund's maximum level-load sales charge of 1.00%. Had it been included, the Fund's return would have been lower. Results are before taxes on fund distributions and assume reinvestment of dividends and capital gains. Index data shown is from 1/31/02, since comparative index data is available only for full monthly periods. Source: Calamos Investments

Performance data quoted represents past performance, which is no guarantee of future results. Current performance may be lower or higher than the performance quoted. Please refer to Important Risk Information. The principal value and return of an investment will fluctuate so that your shares, when redeemed, may be worth more or less than their original cost. Performance reflected at NAV does not include the Fund's maximum front-end sales load of 4.75%. Had it been included, the Fund's return would have been lower.

S&P 500 Index is generally considered representative of the US stock market.

Unmanaged index returns, unlike fund returns, do not reflect fees, expenses or sales charges. Investors cannot invest directly in an index.

Average annual total return measures net investment income and capital gain or loss from portfolio investments as an annualized average. All performance shown assumes reinvestment of dividends and capital gains distributions.

The funds' gross expense ratios as of the prospectus dated 3/1/2022 are as follows: A Shares 1.57%, C Shares 2.33% and I Shares 1.32%.

Class I shares are offered primarily for direct investment by investors through certain tax-exempt retirement plans and by institutional clients, provided such plans or clients have assets of at least $1 million. For eligibility requirements and other available share classes see the prospectus and other Fund documents at www.calamos.com.