MFS HIGH YIELD MUNICIPAL TRUST (CMU) SEC Filings

MFS High Yield Municipal Trust reported insider information for director Laurie J. Thomsen. The filing lists Thomsen as a director and does not report any common stock or derivative security transactions or holdings, indicating that no trades or option exercises are being disclosed in this report.

The MFS High Yield Municipal Trust filing shows JPMorgan Chase Bank, National Association filed an amendment to a Schedule 13G/A reporting zero beneficial ownership of Remarketable Variable Rate MuniFund Term Preferred Shares, Series 2051 (CUSIP 59318E607).

The filing records 0 shares and 0% ownership, and is signed by an authorized signatory on 07/01/2026.

JPMorgan Chase Bank, N.A., as a 10% owner of MFS HIGH YIELD MUNICIPAL TRUST, reported an internal restructuring involving 330 remarketable variable rate MuniFund term preferred shares held indirectly through a trust. In connection with the reorganization of this fund into MFS MUNICIPAL INCOME TRUST, these 330 preferred shares were exchanged for 330 equivalent preferred shares of the new fund in a cashless transaction, leaving no such preferred shares reported as held in the original trust for this issuer.

MFS High Yield Municipal Trust notified the New York Stock Exchange that its Common Shares of Beneficial Interest will be removed from listing and/or registration under Section 12(b) of the Exchange Act.

The Exchange certified compliance with rule 12d2-2 procedures and the issuer certified compliance with Exchange rules for a voluntary withdrawal. The filing is a procedural notice of delisting/withdrawal.

MFS HIGH YIELD MUNICIPAL TRUST ownership disclosure: Almitas Capital LLC reports beneficial ownership of 1,497,718 shares of Common Stock, representing 5.9% of the class. The filing is an amendment and is signed by Ronald Mass as Managing Principal on 05/18/2026.

RiverNorth Capital Management filed an amendment to a Schedule 13G reporting beneficial ownership of 2,955,950 shares of MFS High Yield Municipal Trust (CUSIP 59318E102), representing 11.60% of the class as of 03/31/2026. The filing lists sole voting and dispositive power over all reported shares. The amendment is signed by Marcus Collins, General Counsel and Chief Compliance Officer, dated 05/15/2026.

Bulldog Investors, LLP and its principals have reduced their stake in MFS High Yield Municipal Trust (CMU) and are no longer 5% holders. Based on 12,746,391 common shares outstanding as of May 6, 2026, Bulldog Investors is deemed to beneficially own 100,155 shares, or 0.79% of CMU. Phillip Goldstein is deemed to beneficially own 133,190 shares, or 1.04%, while Andrew Dakos is deemed to beneficially own 90,245 shares, or 0.71%, through their roles at Bulldog.

Since the prior filing, accounts managed by Bulldog disposed of 141,450 shares at $3.6400, 79,573 shares at $3.6456, and 1,410,919 shares at $3.71. The reporting persons state they ceased to be beneficial owners of more than 5% of CMU’s common stock on May 6, 2026, following tender offer results disclosed in the company’s press release.

MFS High Yield Municipal Trust filed Amendment No. 3 to its Schedule TO reporting the terms and exhibits for an issuer tender offer commenced April 6, 2026. The Fund offered to purchase for cash up to 50% (12,746,391 shares) of its outstanding common shares upon the terms and conditions set forth in the Offer.

The amendment incorporates the Offer to Purchase, Letter of Transmittal and related communications and adds press releases and the filing fee table as exhibits. The amendment is intended to satisfy Rule 13e-4(c)(3) requirements.

MFS High Yield Municipal Trust amends its Schedule TO to supplement the tender offer materials for an Offer commenced April 6, 2026, under which the Fund proposes to purchase for cash up to 50% or 12,746,391 shares of its outstanding common shares upon the terms and subject to the conditions of the Offer. This Amendment No. 2 is filed to satisfy Rule 13e-4(c)(3).