Welcome to our dedicated page for Pioneer Municipal High Income SEC filings (Ticker: MHI), 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.
pioneer investments is a leading global asset management company dedicated to growing and preserving client assets. we are present in 28 countries and employ an experienced team of over 2,090 employees worldwide, including nearly 360 investment professionals. our global investment centers in boston, dublin and london, along with an extensive network of local investment and marketing offices, afford us a global perspective as well as in-depth knowledge of local markets. our diverse range of investment products spans both traditional and non-traditional asset classes, including mutual funds, separately managed accounts, institutional strategies and retirement plans. the history of pioneer investments began in 1928, when legendary investor, philip l. carret, founded the pioneer fund, now the third-oldest mutual fund in the united states. over the years pioneer investments has played its part in defining the worldwide mutual fund industry. today, as in the past, we are dedicated to meePioneer Municipal High Income Fund, Inc. reporting persons Almitas Capital LLC and Ronald Mass disclose beneficial ownership of 1,244,033 shares, representing 5.2% of the outstanding common stock. Both filers report shared voting and shared dispositive power over these shares and indicate the holdings are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer. The filing identifies the reporting entities and their place of organization and provides officer signatures certifying the accuracy of the statement.
RiverNorth Capital Management reports beneficial ownership of 1,003,600 shares of Pioneer Municipal High Income Fund, Inc. common stock, representing 4.41% of the class. The filing states RiverNorth has sole voting and sole dispositive power over those shares.
The Schedule 13G/A indicates these holdings are held in the ordinary course of business and were not acquired to change or influence control of the issuer. The filing also notes that other persons have the right to receive proceeds from the sale of the reported securities.
Sit Investment Associates, Inc. (SIA) and its subsidiary Sit Fixed Income Advisors II, LLC (SFI) have jointly filed Amendment No. 1 to Schedule 13G for Pioneer Municipal High Income Fund, Inc. (MHI). As of 31 Jul 2025, the advisers report beneficial ownership of 2,614,270 common shares, equal to 11.5 % of the 22,771,349 shares outstanding.
The stake is held entirely through client accounts; SIA and SFI assert shared voting and dispositive power over the shares and disclaim any direct economic ownership under Rule 13d-4. Both entities are registered investment advisers (Item 3 class “IA”) and certify the holdings were acquired in the ordinary course of business without intent to influence control of the issuer. Paul E. Rasmussen, Vice President, signed on 05 Aug 2025.
No other persons or subsidiaries are identified as part of a group, and there are no disclosures of transactions, sales, or ownership below 5 %.
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