Company: CHY
Filing Date: 2025-02-21
Form Type: N-2ASR
Source: 0001104659-25-016081
Chunk: 170

Company: CALAMOS CONVERTIBLE & HIGH INCOME FUND
Filing Date: 2025-02-21
Form: N-2ASR
Chunk 170
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 or commission of [ ]%)], assuming (1) total annual expenses of []% of net assets attributable to common shareholders; (2) a 5% annual gross return; and (3) all distributions are reinvested at net asset value:

|                                               |     | 1 Year |     |     | 3 Years |     |     | 5 Years |     |     | 10 Years |     |
|:----------------------------------------------|:----|:-------|:----|:----|:--------|:----|:----|:--------|:----|:----|:---------|:----|
| Total Expenses Paid by Common Shareholders(7) |     | $      | [ ] |     | $       | [ ] |     | $       | [ ] |     | $        | [ ] |

SUP-3 The example should not be considered a representation of future expenses. Actual expenses may be greater or less than those assumed. Moreover, our actual rate of return may be greater or less than the hypothetical 5% return shown in the example. (1) [Represents the estimated commission with respect to our common shares being sold in this offering, which we will pay to in connection with sales of common shares effected by in this offering. While is entitled to a commission of []% to []% of the gross sales price for common shares sold, with the exact amount to be agreed upon by the parties, we have assumed, for purposes of this offering, that will receive a commission of []% of such gross sales price. This is the only sales load to be paid in connection with this offering. There is no guarantee that there will be any sales of our common shares pursuant to this prospectus supplement and the accompanying prospectus. Actual sales of our common shares under this prospectus supplement and the accompanying prospectus, if any, may be less than as set forth in the table. In addition, the price per share of any such sale may be greater or less than the price set forth in the table, depending on the market price of our common shares at the time of any such sale.] (2) Shareholders will pay a $15.00 transaction fee plus a $0.02 per share brokerage charge if they direct the Plan Agent to sell common shares held in a Plan account. In addition, each participant will pay a pro rata share of brokerage commissions incurred with respect to the Plan Agent’s open-market purchases in connection with the reinvestment of dividends or distributions. If a participant