Company: CHY
Filing Date: 2025-06-27
Form Type: N-CSRS
Source: 0001104659-25-063497
Chunk: 56

Company: CALAMOS CONVERTIBLE & HIGH INCOME FUND
Filing Date: 2025-06-27
Form: N-CSRS
Chunk 56
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-2(b) under the 1940 Act and Section 906 of the Sarbanes-Oxley Act of 2002 are attached hereto. (a)(3)(iii) Not applicable (a)(4) Not applicable (a)(5) Not applicable

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Calamos Convertible and High Income Fund

| By:    | /s/ John P. Calamos, Sr.    |
| Name:  | John P. Calamos, Sr.        |
| Title: | Principal Executive Officer |
| Date:  | June 27, 2025               |
| By:    | /s/ Thomas E. Herman        |
| Name:  | Thomas E. Herman            |
| Title: | Principal Financial Officer |
| Date:  | June 27, 2025               |

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

| By:    | /s/ John P. Calamos, Sr.    |
| Name:  | John P. Calamos, Sr.        |
| Title: | Principal Executive Officer |
| Date:  | June 27, 2025               |
| By:    | /s/ Thomas E. Herman        |
| Name:  | Thomas E. Herman            |
| Title: | Principal Financial Officer |
| Date:  | June 27, 2025               |