Company: CHY
Filing Date: 2025-02-21
Form Type: N-2ASR
Source: 0001104659-25-016081
Chunk: 40

Company: CALAMOS CONVERTIBLE & HIGH INCOME FUND
Filing Date: 2025-02-21
Form: N-2ASR
Chunk 40
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 Offering Expenses Borne by the Fund (as a percentage of offering price) |     |   |     — 
     — | (1) 
 (1) |
|:------------------------------------------------------------------------|:----|:--|------:|:----|
| Dividend Reinvestment Plan Fees (per sales transaction fee)(2)          |     | $ | 15.00 |     |

| Annual Expenses                        |     | Percentage of Average Net 
 Assets Attributable to    
 Common Shareholders       |      |   |
| Management Fee(3)                      |     |                           | 1.27 | % |
| Interest Payments on Borrowed Funds(4) |     |                           | 2.19 | % |
| Preferred Stock Dividend Payments(5)   |     |                           | 0.71 | % |
| Other Expenses(6)                      |     |                           | 0.09 | % |
| Total Annual Expenses                  |     |                           | 4.26 | % |

Example: The following example illustrates the expenses that common shareholders would pay on a $1,000 investment in common shares, assuming (1) total annual expenses of 4.26% of net assets attributable to common shareholders; (2) a 5% annual 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) |     | $      | 43 |     | $       | 129 |     | $       | 217 |     | $        | 442 |

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.

21 (1) If the securities to which this prospectus relates are sold to or through underwriters, the prospectus supplement will set forth any applicable sales load and the estimated offering expenses borne by us. (2) Shareholders will pay a $15.00 transaction fee plus a $0.02 per share brokerage charge if they direct the