SCHEDULE 13G/A 0000314984-22-000031 0000314984 XXXXXXXX LIVE 2 Mandatory Redeemable Preferred Shares, Series C 09/06/2024 0001275214 CALAMOS STRATEGIC TOTAL RETURN FUND 128125*45 2020 CALAMOS COURT 2020 CALAMOS COURT NAPERVILLE IL 60653 Rule 13d-1(b) THRIVENT FINANCIAL FOR LUTHERANS WI 720000.00 0.00 720000.00 0.00 720000.00 22.2 IC CALAMOS STRATEGIC TOTAL RETURN FUND 2020 CALAMOS COURT, 2020 CALAMOS COURT, NAPERVILLE, ILLINOIS, 60653. Thrivent Financial for Lutherans 901 Marquette Ave, Suite 2500 Minneapolis, MN 55402 Thrivent Financial for Lutherans is a Wisconsin fraternal benefit society. N IC 720,000 22.22% Series C Mandatory Redeemable Preferred Shares 720,000 0 720,000 0 N N N N N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. THRIVENT FINANCIAL FOR LUTHERANS /s/ David S. Royal 11/12/2024