X0202 SCHEDULE 13G/A 0000314984 XXXXXXXX LIVE 2 Mandatory Redeemable Preferred Shares, Series D 08/24/2026 0001171471 CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND 1281173*7 2020 CALAMOS COURT C/O CALAMOS ADVISORS LLC NAPERVILLE IL 60563 Rule 13d-1(b) THRIVENT FINANCIAL FOR LUTHERANS WI 0.00 0.00 0.00 0.00 0.00 0.0 IC CALAMOS CONVERTIBLE OPPORTUNITIES & INCOME FUND 2020 CALAMOS COURT, C/O CALAMOS ADVISORS LLC, NAPERVILLE, ILLINOIS, 60563. Thrivent Financial for Lutherans 901 Marquette Avenue, Suite 2500 Minneapolis, Minnesota 55402 Thrivent Financial for Lutherans is a Wisconsin fraternal benefit society. N IC 0 0 0 0 0 0 Y Y Y Y Y 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 Royal 08/25/2026