Welcome to our dedicated page for MFS High Yield Municipal Trust SEC filings (Ticker: CMU), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
MFS High Yield Municipal Trust (NYSE: CMU) is a diversified, closed-end management investment company that seeks high current income exempt from federal income tax by investing primarily in tax-exempt bonds and tax-exempt notes. As a registered investment company with listed common shares and preferred shares, its regulatory disclosures are an important resource for understanding its portfolio, leverage, and governance.
Although specific SEC filings are not listed here, public announcements reference documents such as tender offer statements on Schedule TO, which include the offer to purchase, letter of transmittal, and related materials for cash tender offers covering up to 10% of the fund’s outstanding common shares. These filings describe the terms of each tender offer, including pricing at a stated percentage of net asset value per share, conditions for acceptance, and procedures for prorating shares when tenders exceed the offer size.
Other regulatory-related communications discuss the fund’s Remarketable Variable Rate MuniFund Term Preferred Shares, Series 2051 (Series 2051 RVMTP Shares). Optional partial redemptions of these preferred shares, completed at their liquidation preference plus unpaid dividends and other distributions, affect the fund’s leverage attributable to preferred shares. Details of such actions are typically supported by formal notices and associated regulatory documentation.
On Stock Titan’s SEC filings page for CMU, investors can access the fund’s available regulatory documents as they are posted to the U.S. Securities and Exchange Commission’s EDGAR system. Stock Titan enhances this information with AI-powered summaries that explain the key points of lengthy filings in plain language, highlight material terms in tender offers, and clarify how preferred share redemptions and other actions may influence the fund’s structure.
By reviewing these filings and AI-generated insights together, users can better understand MFS High Yield Municipal Trust’s investment focus on tax-exempt bonds and notes, its use of preferred shares and leverage, and the formal terms governing tender offers and other corporate actions.
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).
Bulldog Investors, LLP and its principals updated their ownership in MFS High Yield Municipal Trust (CMU) in this Amendment No. 13 to their Schedule 13D. As per an N-CSR, CMU had 25,492,782 common shares outstanding as of 11/30/25.
As of May 1, 2026, Bulldog Investors is deemed the beneficial owner of 1,382,344 shares of CMU, representing 5.42% of outstanding shares. Phillip Goldstein is deemed to beneficially own 1,765,329 shares (6.92%), and Andrew Dakos 1,267,456 shares (4.97%), based on their power to vote and dispose of these shares.
Bulldog Investors has sole voting and dispositive power over 120,488 shares and shared power over 1,261,856 shares, with certain clients sharing this power. Since the prior filing, CMU shares were sold on 4/30/26 and 5/1/26 in multiple trades, including blocks of 234,000 and 800,000 shares at prices around $3.64 per share.
MFS High Yield Municipal Trust: Schedule 13G/A amendment showing JPMorgan Chase Bank's position in Series 2051 preferred shares. The filing states JPMorgan Chase Bank, N.A. beneficially owns 330 Remarketable Variable Rate MuniFund Term Preferred Shares, Series 2051 (CUSIP 59318E607), representing 100% of that preferred class. Voting power is shared: JPM reports 0 sole voting power and 330 shared voting power due to a Voting Trust arrangement. The filing notes that on September 5, 2024 JPM deposited 510 RVMTP Shares into a tender option bond trust (TOB) but that the TOB does not have disposition or voting power; voting rights remain with JPM and the Voting Trust. Signature dated 05/05/2026.
MFS HIGH YIELD MUNICIPAL TRUST redeemed 180 Remarketable Variable Rate Munifund Term Preferred Shares, Series 2051, that were beneficially owned by JPMorgan Chase Bank through a trust. The redemption price was $100,000 per share, and JPMorgan now reports holding 330 of these preferred shares following the transaction.
MFS High Yield Municipal Trust received an updated Schedule 13D/A (Amendment No. 12) from Bulldog Investors, LLP and its principals Phillip Goldstein and Andrew Dakos. Based on 25,492,782 shares outstanding as of 11/30/25, Bulldog Investors is deemed the beneficial owner of 2,459,393 shares, or 9.65% of the common stock. Goldstein is deemed to beneficially own 2,842,378 shares, or 11.15% of the company, while Dakos is deemed to beneficially own 2,344,505 shares, or 9.20%. The filing notes recent CMU share sales between 4/24/26 and 4/29/26 at prices around $3.65 per share, executed through Bulldog-managed accounts. Clients of Bulldog Investors and the account owners are entitled to any dividends or sales proceeds.
Bulldog Investors, LLP and its principals Phillip Goldstein and Andrew Dakos filed Amendment No. 11 to their Schedule 13D for MFS High Yield Municipal Trust (CMU), updating their ownership and recent trading.
Using 25,492,782 shares outstanding as of 11/30/25, Bulldog Investors is deemed the beneficial owner of 2,814,161 CMU shares, or 11.04% of the fund. As of April 23, 2026, Mr. Goldstein is deemed to beneficially own 3,197,146 shares (12.54%), and Mr. Dakos 2,699,273 shares (10.59%), primarily through their interests in Bulldog Investors.
The amendment also reports recent CMU share sales between April 14 and April 23, 2026 at prices around $3.66–$3.68 per share, with dividends and sale proceeds for these shares payable to Bulldog Investors’ clients and account owners.
MFS High Yield Municipal Trust (CMU) received an updated Schedule 13D/A from Bulldog Investors, LLP, Phillip Goldstein and Andrew Dakos reflecting their current ownership stakes. Based on 25,492,782 CMU shares outstanding as of 11/30/25, Phillip Goldstein is deemed to beneficially own 3,455,205 shares, or 13.55% of the common stock. Bulldog Investors, LLP is deemed to beneficially own 3,072,220 shares, or 12.05%, while Andrew Dakos is deemed to beneficially own 2,957,332 shares, or 11.60%. The filing notes that Bulldog has sole voting and dispositive power over 120,488 shares and shared power over 2,951,732 shares, with certain clients sharing this power. It also lists recent CMU trading activity over the last 60 days, including purchases and sales around the mid-$3.60 price range.
MFS High Yield Municipal Trust commenced a self-tender offer to purchase for cash up to 50% (12,746,391 shares) of its outstanding common shares. The price payable is 99% of net asset value per share as of the Expiration Date plus any unpaid dividends accrued through May 5, 2026. The Offer commenced on April 6, 2026 and the Schedule TO amendment reports this tender offer and attaches the Offer to Purchase and Letter of Transmittal.
MFS HIGH YIELD MUNICIPAL TRUST submitted a Form 4 identifying Geoffrey Schechter as a reporting person with the role of portfolio manager. The summary data in this filing shows no reported purchases, sales, exercises, gifts, tax withholdings, or other share transactions.
MFS High Yield Municipal Trust has released preliminary communications describing a planned tender offer to purchase for cash up to 50% of the Fund’s outstanding common shares. The announcement states the Offer has not commenced and that the Fund intends to file a Schedule TO with full tender offer documents, including a letter of transmittal.
The communication is informational only and is not an offer or solicitation; timing and final terms are subject to the Fund’s planned filings.