X0202 SCHEDULE 13G/A 0000897101-25-000422 0000769317 XXXXXXXX LIVE 1 Common Stock 03/31/2026 0000033934 CORNERSTONE TOTAL RETURN FUND INC 21924U300 225 Pictoria Drive Suite 450 Cincinnati OH 45246-1617 Rule 13d-1(b) Sit Investment Associates, Inc. b MN 0.00 5751900.00 0.00 5751900.00 5751900.00 N 3.5 IA Sit Fixed Income Advisors II, LLC b DE 0.00 5751900.00 0.00 5751900.00 5751900.00 N 3.5 IA CORNERSTONE TOTAL RETURN FUND INC 225 Pictoria Drive, Suite 450, Cincinnati, OH 45246-1617 Sit Investment Associates, Inc. Sit Fixed Income Advisors II, LLC c/o Sit Investment Associates, Inc. 80 South Eighth Street, Suite 3300 Minneapolis, MN 55402 Sit Investment Associates, Inc. Minnesota Corporation Sit Fixed Income Advisors II, LLC Delaware LLC N IA See response to item 9 on each cover page. See response to item 11 on each cover page. See response to item 5 on each cover page. See response to item 6 on each cover page. See response to item 7 on each cover page. See response to item 8 on each cover page. The ownership percentages reported are based on 164,889,238 shares of common stock outstanding as of December 31, 2025, as reported in the Issuer's Report on Form N-CSR filed with the Securities Exchange Commission, and adjusted for shares issued pursuant to the Issuer's dividend reinvestment plan. Sit Investment Associates, Inc. ("SIA") is an investment adviser registered under section 203 of the Investment Advisers Act of 1940. Sit Fixed Income Advisors II, LLC ("SFI") is an investment adviser registered under section 203 of the Investment Advisers Act of 1940 and a subsidiary of SIA. SIA and SFI provide investment management services to client accounts ("Accounts"). In their roles as investment advisers SIA and SFI possess shared voting and investment power over securities of the Issuer described in this schedule 13G owned by the Accounts and may be deemed to be the beneficial owner of such shares of the Issuer owned by the Accounts. All securities reported in this schedule 13G are owned by the Accounts. Pursuant to Rule 13d-4 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), SIA and SFI disclaim beneficial ownership of such securities. N 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. Sit Investment Associates, Inc. /s/ Paul E. Rasmussen 04/06/2026 Sit Fixed Income Advisors II, LLC /s/ Paul E. Rasmussen 04/06/2026