Calamos Short-Term Bond Fund

*Reflects the fund's return from the inception date of 9/19/2018 through 12/31/2018.

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 2.25%. Had it been included, the Fund's return would have been lower.

Index and Morningstar category data shown reflects full month periods only. If share class inception date is on or before the 15th of the month, the index or category calculation inception date begins on the first day of that month. If share class inception date is after the 15th of the month, the index or category calculation inception date begins on the first day of the following month.

The Bloomberg US Government/Credit 1-3 Years Index includes all medium and larger issues of US government, investment-grade corporate, and investment grade international dollar-denominated bonds that have maturities of between 1 and 3 years and are publicly issued.

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 3/1/2023 are as follows: A Shares 0.63% and I Shares 0.38%.