Company: CHY
Filing Date: 2025-05-12
Form Type: DEF 14A
Source: 0001104659-25-047185
Chunk: 3

Company: CALAMOS CONVERTIBLE & HIGH INCOME FUND
Filing Date: 2025-05-12
Form: DEF 14A
Chunk 3
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QUITY & DYNAMIC INCOME TRUST

This information summarizes information that is included
in more detail in the proxy statement. We urge you to read
the proxy statement carefully.

If you have questions, call 1-800-582-6959

CALAMOS ®CONVERTIBLE OPPORTUNITIES AND INCOME FUND

CALAMOS ®CONVERTIBLE AND HIGH INCOME FUND

CALAMOS ®STRATEGIC TOTAL RETURN FUND

CALAMOS ®GLOBAL TOTAL RETURN FUND

CALAMOS ®GLOBAL DYNAMIC INCOME FUND

CALAMOS ®DYNAMIC CONVERTIBLE AND INCOME FUND

CALAMOS ®LONG/SHORT EQUITY & DYNAMIC INCOME TRUST

2020 Calamos Court
Naperville, Illinois 60563-2787
1-800-582-6959

NOTICE OF JOINT ANNUAL MEETING OF SHAREHOLDERS
June 23, 2025</div>

A joint annual meeting of shareholders of each Fund named above (each, a "Fund") has been called to be held in the Calamos Café on the lower level of the offices of Calamos Advisors LLC ("Calamos Advisors"), each Fund's investment adviser, 2020 Calamos Court, Naperville, Illinois at 4:00 p.m., central time, on Monday, June 23, 2025.

The meeting has been called for the following purposes:

The meeting has been called by the board of trustees of each Fund for the following purposes, as more fully discussed in the proxy statement:

(1) For each Fund other than Calamos Long/Short Equity & Dynamic Income Trust ("CPZ"), to elect four trustees, to be elected by the holders of common shares and the holders of preferred shares, voting together as a single class, one such trustee to serve until the annual meeting of shareholders in 2026, one such trustee to serve until the annual meeting of shareholders in 2027, and two such trustees to serve until the annual meeting of shareholders in 2028, or, for each such trustee, until his successor is elected and qualified.

(2) For each Fund other than CPZ, to elect one trustee, to be elected by the holders of preferred shares, voting as a single class, such trustee to serve until the annual meeting of shareholders in 2028, or until her successor is elected and qualified.

<div align='center'>CALAMOS ®CONVERTIBLE OPPORTUNITIES AND