Calamos Dividend Growth Fund (CADVX)

*Reflects the fund's return from the inception date of 8/5/2013 through 12/31/2013.

An investment in the Fund(s) is subject to risks, and you could lose money on your investment in the Fund(s). There can be no assurance that the Fund(s) will achieve its investment objective. Your investment in the Fund(s) is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. The risks associated with an investment in the Fund(s) can increase during times of significant market volatility. The Fund(s) also has specific principal risks, which are described below. More detailed information regarding these risks can be found in the Fund's prospectus.

The principal risks of investing in the Calamos Dividend Growth Fund include the risk of: declining equity values; losses from MLPs related to lack of portfolio diversification, changes in tax laws, lack of liquidity, declining equity values, and conflicts over control rights; incorrect selection or judgments on portfolio holdings by the investment advisor; increased transaction costs because of frequent turnover; losses from currency fluctuations; lack of liquidity or correlation to underlying securities in the options market; and potential illiquidity of securities purchased privately under Rule 144A. The options risk is the Fund's ability to close out its position as a purchaser or seller of an over-the-counter or exchange-listed put or call option is dependent, in part, upon the liquidity of the option market. There are significant differences between the securities and options markets that could result in an imperfect correlation among these markets, causing a given transaction not to achieve its objectives. The Fund's ability to utilize options successfully will depend on the ability of the Fund's investment adviser to predict pertinent market movements, which cannot be assured. More detailed information regarding these risks can be found in the Fund's prospectus. As a result of political or economic instability in foreign countries, there can be special risks associated with investing in foreign securities, including fluctuations in currency exchange rates, increased price volatility and difficulty obtaining information. In addition, emerging markets may present additional risk due to potential for greater economic and political instability in less developed countries.

10k Performance is for the Fund's Class A shares at net asset value and does not include the Fund's maximum front-end sales charge of 4.75%-had it been included, the Fund's return would have been lower. Index data shown is from 8/5/13, since comparative index data is available only for full monthly periods.

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 U.S. stock market.

Unmanaged index returns assume reinvestment of any and all distributions and, 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 3/1/2019 are as follows: A Shares 1.84%, C Shares 2.60% and I Shares 1.61%.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

An investment in the Fund(s) is subject to risks, and you could lose money on your investment in the Fund(s). There can be no assurance that the Fund(s) will achieve its investment objective. Your investment in the Fund(s) is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. The risks associated with an investment in the Fund(s) can increase during times of significant market volatility. The Fund(s) also has specific principal risks, which are described below. More detailed information regarding these risks can be found in the Fund's prospectus.

The principal risks of investing in the Calamos Dividend Growth Fund include the risk of: declining equity values; losses from MLPs related to lack of portfolio diversification, changes in tax laws, lack of liquidity, declining equity values, and conflicts over control rights; incorrect selection or judgments on portfolio holdings by the investment advisor; increased transaction costs because of frequent turnover; losses from currency fluctuations; lack of liquidity or correlation to underlying securities in the options market; and potential illiquidity of securities purchased privately under Rule 144A. The options risk is the Fund's ability to close out its position as a purchaser or seller of an over-the-counter or exchange-listed put or call option is dependent, in part, upon the liquidity of the option market. There are significant differences between the securities and options markets that could result in an imperfect correlation among these markets, causing a given transaction not to achieve its objectives. The Fund's ability to utilize options successfully will depend on the ability of the Fund's investment adviser to predict pertinent market movements, which cannot be assured. More detailed information regarding these risks can be found in the Fund's prospectus. As a result of political or economic instability in foreign countries, there can be special risks associated with investing in foreign securities, including fluctuations in currency exchange rates, increased price volatility and difficulty obtaining information. In addition, emerging markets may present additional risk due to potential for greater economic and political instability in less developed countries.

Top 10 Holdings and Sector Weightings are calculated as a percentage of Net Assets. The tables exclude cash or cash equivalents, any government / sovereign bonds or broad based index hedging securities the portfolio may hold.

Holdings and weightings are subject to change daily. Holdings are provided for informational purposes only and should not be deemed as a recommendation to buy or sell the securities mentioned.

Distribution Yield -Is calculated by dividing the sum of all distributions paid by the fund over the trailing 12 months by the fund's NAV as of the date of the period presented. Distributions may include income, short-term capital gains, and long-term capital gains. Short-term and long-term capital gains represent the net trading profits realized over the trailing 12 months in the fund and are not guaranteed. Distribution Yield is based on distributions made in the past and is therefore not reflective of the fund's current portfolio.

Debt/Capital Ratio-Is a measure of a company's financial leverage, calculated as the company's debt divided by its total capital.

PEG Ratio-Is a stock's price/earnings ratio divided by estimated earnings growth rate in the next year; a lower PEG indicates that less is being paid for each unit of earnings growth.

Price/Book Ratio-Is the stock's capitalization divided by its book value.

Price/Earnings Ratio-Is the current stock price over trailing 12-month earnings per share.

Price/Sales Ratio-Is a stock's capitalization divided by its sales over the trailing 12 months. ROIC (return on invested capital) measures how effectively a company uses the money invested in its operations, calculated as a company's net income minus any dividends divided by the company's total capital.

S&P 500 Index-Is generally considered representative of the U.S. stock market.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

An investment in the Fund(s) is subject to risks, and you could lose money on your investment in the Fund(s). There can be no assurance that the Fund(s) will achieve its investment objective. Your investment in the Fund(s) is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. The risks associated with an investment in the Fund(s) can increase during times of significant market volatility. The Fund(s) also has specific principal risks, which are described below. More detailed information regarding these risks can be found in the Fund's prospectus.

The principal risks of investing in the Calamos Dividend Growth Fund include the risk of: declining equity values; losses from MLPs related to lack of portfolio diversification, changes in tax laws, lack of liquidity, declining equity values, and conflicts over control rights; incorrect selection or judgments on portfolio holdings by the investment advisor; increased transaction costs because of frequent turnover; losses from currency fluctuations; lack of liquidity or correlation to underlying securities in the options market; and potential illiquidity of securities purchased privately under Rule 144A. The options risk is the Fund's ability to close out its position as a purchaser or seller of an over-the-counter or exchange-listed put or call option is dependent, in part, upon the liquidity of the option market. There are significant differences between the securities and options markets that could result in an imperfect correlation among these markets, causing a given transaction not to achieve its objectives. The Fund's ability to utilize options successfully will depend on the ability of the Fund's investment adviser to predict pertinent market movements, which cannot be assured. More detailed information regarding these risks can be found in the Fund's prospectus. As a result of political or economic instability in foreign countries, there can be special risks associated with investing in foreign securities, including fluctuations in currency exchange rates, increased price volatility and difficulty obtaining information. In addition, emerging markets may present additional risk due to potential for greater economic and political instability in less developed countries.

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.

The funds' gross expense ratios as of the prospectus dated 3/1/2019 are as follows: A Shares 1.84%, C Shares 2.60% and I Shares 1.61%.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE

An investment in the Fund(s) is subject to risks, and you could lose money on your investment in the Fund(s). There can be no assurance that the Fund(s) will achieve its investment objective. Your investment in the Fund(s) is not a deposit in a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation (FDIC) or any other government agency. The risks associated with an investment in the Fund(s) can increase during times of significant market volatility. The Fund(s) also has specific principal risks, which are described below. More detailed information regarding these risks can be found in the Fund's prospectus.

The principal risks of investing in the Calamos Dividend Growth Fund include the risk of: declining equity values; losses from MLPs related to lack of portfolio diversification, changes in tax laws, lack of liquidity, declining equity values, and conflicts over control rights; incorrect selection or judgments on portfolio holdings by the investment advisor; increased transaction costs because of frequent turnover; losses from currency fluctuations; lack of liquidity or correlation to underlying securities in the options market; and potential illiquidity of securities purchased privately under Rule 144A. The options risk is the Fund's ability to close out its position as a purchaser or seller of an over-the-counter or exchange-listed put or call option is dependent, in part, upon the liquidity of the option market. There are significant differences between the securities and options markets that could result in an imperfect correlation among these markets, causing a given transaction not to achieve its objectives. The Fund's ability to utilize options successfully will depend on the ability of the Fund's investment adviser to predict pertinent market movements, which cannot be assured. More detailed information regarding these risks can be found in the Fund's prospectus. As a result of political or economic instability in foreign countries, there can be special risks associated with investing in foreign securities, including fluctuations in currency exchange rates, increased price volatility and difficulty obtaining information. In addition, emerging markets may present additional risk due to potential for greater economic and political instability in less developed countries.

Calamos Advisors, the Fund's investment advisor, has contractually agreed to reimburse Fund expenses through 3/1/2019 to the extent necessary so that Total Annual Fund Operating Expenses (excluding taxes, interest, short interest, short dividend expenses, brokerage commissions, acquired fund fees and expenses, and extraordinary expenses, if any) of ((classes)) are limited to ((expenses)) of average net assets, respectively. Calamos Advisors may recapture previously waived expense amounts within the same fiscal year for any day where the respective Fund's expense ratio falls below the contractual expense limit up to the expense limit for that day. This undertaking is binding on Calamos Advisors and any of its successors and assigns. This agreement is not terminable by either party.

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NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE