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The following table sets forth the estimated amount of the sources of distribution for purposes of Section 19 of the Investment Company Act of 1940, as amended, and the related rules adopted thereunder. The Funds estimate the following percentages, of their respective total distribution amount per common share, attributable to (i) current and prior fiscal year net investment income, (ii) net realized short-term capital gain, (iii) net realized longterm capital gain and (iv) return of capital or other capital source as a percentage of the total distribution amount. These percentages are disclosed for the current distribution as well as the fiscal YTD cumulative distribution amount per common share for the Funds. The following table provides estimates of each Fund's distribution sources, reflecting YTD cumulative experience. The Funds attribute these estimates equally to each regular distribution throughout the year.

You should not draw any conclusions about the Fund's investment performance from the amount of this distribution or from the terms of the Fund's plan.

If the Fund(s) estimate(s) that it has distributed more than its income and capital gains, a portion of your distribution may be a return of capital. A return of capital may occur, for example, when some or all of the money that you invested in the Fund is paid back to you. A return of capital distribution does not necessarily reflect the Fund's investment performance and should not be confused with 'yield' or 'income'.

The amounts and sources of distributions reported in this 19(a) notice are only estimates and are not being provided for tax reporting purposes. The actual amounts and sources of the amounts for accounting and tax purposes will depend upon the Fund's investment experience during the remainder of its fiscal year and may be subject to changes based on tax regulations. The Fund will send you a Form 1099 DIV for the calendar year that will tell you how to report these distributions for federal income tax purposes.

Return figures provided below are based on the change in the Fund's Net Asset Value per share ("NAV"), compared to the annualized distribution rate for this current distribution as a percentage of the NAV on the last day of the month prior to distribution record date.

While the NAV performance may be indicative of the Fund's investment performance, it does not measure the value of a shareholder's investment in the Fund. The value of a shareholder's investment in the Fund is determined by the Fund's market price, which is based on the supply and demand for the Fund's shares in the open market. Past performance does not guarantee future results.

Monthly distributions offer shareholders the opportunity to accumulate more shares in a fund via the automatic dividend reinvestment plan. For example, if a fund's shares are trading at a premium, distributions will be automatically reinvested through the plan at NAV or 95% of the market price, whichever is greater; if shares are trading at a discount, distributions will be reinvested at the market price through an open market purchase program. Thus, the plan offers current shareholders an efficient method of accumulating additional shares with a potential for cost savings. Please see the dividend reinvestment plan for more information.

Important Notes about Performance and Risk
Past performance is no guarantee of future results. As with other investments, market price will fluctuate with the market and upon sale, your shares may have a market price that is above or below net asset value and may be worth more or less than your original investment. Returns at NAV reflect the deduction of the Fund's management fee, debt leverage costs and other expenses. You can purchase or sell common shares daily. Like any other stock, market price will fluctuate with the market. Upon sale, your shares may have a market price that is above or below net asset value and may be worth more or less than your original investment. Shares of closed-end funds frequently trade at a discount which is a market price that is below their net asset value.

About Calamos
Calamos Investments is a diversified global investment firm offering innovative investment strategies including alternatives, multi-asset, convertible, fixed income, equity, and sustainable equity. The firm offers strategies through separately managed portfolios, mutual funds, closed-end funds, private funds, an interval fund, ETFs, and UCITS funds. Clients include major corporations, pension funds, endowments, foundations and individuals, as well as the financial advisors and consultants who serve them. Headquartered in the Chicago metropolitan area, the firm also has offices in New York City, San Francisco, Milwaukee, Portland (Oregon), and the Miami area. For more information, please visit us on LinkedIn, on Twitter @Calamos, Instagram @calamos_investments, or at www.calamos.com.

*Calamos Investments LLC, referred to herein as Calamos Investments^®, is a financial services company offering such services through its subsidiaries: Calamos Advisors LLC, Calamos Wealth Management LLC, Calamos Investments LLP and Calamos Financial Services LLC.

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SOURCE Calamos Investments