X0202 SCHEDULE 13G/A 0000895421 XXXXXXXX LIVE 6 Auction Preferred Stock 09/15/2026 0001070732 Eaton Vance Senior Income Trust 27826S301 27826S202 ONE POST OFFICE SQUARE BOSTON MA 02109 Rule 13d-1(b) MORGAN STANLEY DE 0.00 0.00 0.00 0.00 0.00 0.0 HC CO As of the date hereof, Morgan Stanley has ceased to be the beneficial owner of more than five percent of the class of securities Morgan Stanley & Co. LLC DE 0.00 0.00 0.00 0.00 0.00 0.0 BD CO As of the date hereof, Morgan Stanley & Co. LLC has ceased to be the beneficial owner of more than five percent of the class of securities. Eaton Vance Senior Income Trust ONE POST OFFICE SQUARE, BOSTON, MASSACHUSETTS, 02109. 1: Morgan Stanley 2: Morgan Stanley & Co. LLC 1: 1585 Broadway, New York, NY 10036 ;2: 1585 Broadway, New York, NY 10036 1: Delaware 2: Delaware N BD HC See the response(s) to Item 9 on the attached cover page(s). *The number of shares reported herein represents combined holdings in multiple series of auction rate preferred securities of the Issuer, which are treated herein as one class of securities in accordance with the Securities and Exchange Commission's Auction Rate Securities -- Global Exemptive Relief no-action letter issued on September 22, 2008. 0.0 See the response(s) to Item 5 on the attached cover page(s). See the response(s) to Item 6 on the attached cover page(s). See the response(s) to Item 7 on the attached cover page(s). See the response(s) to Item 8 on the attached cover page(s). Y Y N See Exhibit 99.2 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. MORGAN STANLEY Claire Gordon 09/17/2026 Morgan Stanley & Co. LLC Claire Gordon 09/17/2026