Calamos Global Opportunities Fund (CVLCX)

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 Global Opportunities Fund include: convertible securities risk consisting of the potential for a decline in value during periods of rising interest rates and the risk of the borrower to miss payments, synthetic convertible instruments risk consisting of fluctuations inconsistent with a convertible security and the risk of components expiring worthless, foreign securities risk, emerging markets risk, equity securities risk, growth stock risk, interest rate risk, credit risk, high yield risk, forward foreign currency contract risk, portfolio selection risk, and liquidity risk. 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.

The Calamos Global Opportunities Fund was formerly named the Calamos Global Growth and Income Fund. This name change was effective April 1, 2021.

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 9/9/96, 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.

The MSCI World Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets.

The MSCI ACWI Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets and emerging markets.

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 4/1/2021 are as follows: A Shares 1.53%, C Shares 2.28% and I Shares 1.28%.

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 Global Opportunities Fund include: convertible securities risk consisting of the potential for a decline in value during periods of rising interest rates and the risk of the borrower to miss payments, synthetic convertible instruments risk consisting of fluctuations inconsistent with a convertible security and the risk of components expiring worthless, foreign securities risk, emerging markets risk, equity securities risk, growth stock risk, interest rate risk, credit risk, high yield risk, forward foreign currency contract risk, portfolio selection risk, and liquidity risk. 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.

The Calamos Global Opportunities Fund was formerly named the Calamos Global Growth and Income Fund. This name change was effective April 1, 2021.

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.

Sector Weightings percentages are based on invested portfolio and are subject to change. Other includes securities that do not have a sector classification.

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.

Market Capitalization statistics are based on common stock holdings.

Conversion Premium- is the amount by which the market price of a convertible bond or convertible preferred exceeds the conversion value, expressed as a percentage. It is a gauge of equity participation.

Current (SEC) Yield-Reflects the dividends and interest earned by the Fund during the 30-day period ended as of the date stated above after deducting the Fund's expenses for that same period.

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

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.

Duration- provides a measure of the Fund's interest rate sensitivity-the longer a fund's duration, the more sensitive it is to shifts in interest rates

Investment Premium-is the amount that the market price of the convertible is above its investment value, expressed as a percentage. It is a gauge of equity participation.

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.

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.

Turnover-Is the percentage of assets in a portfolio that changed over a certain period, often a year; higher turnover indicates greater buying and selling activity.

The MSCI ACWI Index is a free float-adjusted market capitalization weighted index that is designed to measure the equity market performance of developed markets and emerging markets.

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 Global Opportunities Fund include: convertible securities risk consisting of the potential for a decline in value during periods of rising interest rates and the risk of the borrower to miss payments, synthetic convertible instruments risk consisting of fluctuations inconsistent with a convertible security and the risk of components expiring worthless, foreign securities risk, emerging markets risk, equity securities risk, growth stock risk, interest rate risk, credit risk, high yield risk, forward foreign currency contract risk, portfolio selection risk, and liquidity risk. 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.

The Calamos Global Opportunities Fund was formerly named the Calamos Global Growth and Income Fund. This name change was effective April 1, 2021.

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 4/1/2021 are as follows: A Shares 1.53%, C Shares 2.28% and I Shares 1.28%.

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 Global Opportunities Fund include: convertible securities risk consisting of the potential for a decline in value during periods of rising interest rates and the risk of the borrower to miss payments, synthetic convertible instruments risk consisting of fluctuations inconsistent with a convertible security and the risk of components expiring worthless, foreign securities risk, emerging markets risk, equity securities risk, growth stock risk, interest rate risk, credit risk, high yield risk, forward foreign currency contract risk, portfolio selection risk, and liquidity risk. 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.

The Calamos Global Opportunities Fund was formerly named the Calamos Global Growth and Income Fund. This name change was effective April 1, 2021.

CUSIP identifiers have been provided by CUSIP Global Services, managed on behalf of the American Bankers Association by S&P Global Market Intelligence LLC, and are not for use or dissemination in a manner that would serve as a substitute for any CUSIP service. The CUSIP Database, © 2011 American Bankers Association. "CUSIP" is a registered trademark of the American Bankers Association.

The Fund's investment advisor has contractually agreed to reimburse Fund expenses through March 1, 2023 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 Class A, Class C, and Class I are limited to 1.22%, 1.97%, and 0.97% 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.

NOT FDIC INSURED | NO BANK GUARANTEE | MAY LOSE VALUE