SCHEDULE: Sit Investment Associates Boosts Stake in Pioneer Municipal Fund

Sit Investment Associates and its subsidiary Sit Fixed Income Advisors II, LLC, reported a combined 11.5% beneficial ownership stake in Pioneer Municipal High Income Fund, Inc.

Summary

• Sit Investment Associates, Inc. and its subsidiary, Sit Fixed Income Advisors II, LLC, jointly reported beneficial ownership of 2,614,270 shares of Common Stock in Pioneer Municipal High Income Fund, Inc.
• This represents 11.5% of the issuer's outstanding common stock, based on 22,771,349 shares outstanding as of April 30, 2025, as reported in the Issuer's Form N-CSR.
• The reporting persons possess shared voting and shared dispositive power over these securities, which are held on behalf of client accounts.
• The acquisition and holding of these securities are stated to be in the ordinary course of business and not for the purpose of changing or influencing the control of the issuer.

Sentiment

Score: 5

Explanation: The filing is a factual disclosure of beneficial ownership, neither inherently positive nor negative in its content regarding the issuer's performance or outlook. It indicates a significant, passive investment by an institutional advisor.

Future Outlook

NA

Industry Context

Schedule 13G filings are mandatory disclosures by institutional investors who acquire more than 5% beneficial ownership of a company's voting stock, indicating a significant passive investment. This filing shows a substantial stake by an investment advisory firm in a municipal high income fund, common for asset managers overseeing client portfolios.

Related Party Transactions

• Sit Fixed Income Advisors II, LLC is a subsidiary of Sit Investment Associates, Inc., and both entities are reporting persons for the same beneficial ownership.

Stakeholder Impact

• Shareholders of Pioneer Municipal High Income Fund, Inc. are informed of a significant institutional ownership stake, which can influence market perception and liquidity.

Key Dates

Keywords

Pioneer Municipal High Income Fund, Sit Investment Associates, Sit Fixed Income Advisors II, Beneficial Ownership, Schedule 13G, Common Stock, Investment Adviser, Closed-End Fund, Municipal Bonds