Pioneer Diversified High Income Fund, Inc. Pioneer Floating Rate Fund, Inc. Pioneer High Income Fund, Inc. Pioneer Municipal High Income Advantage Fund, Inc. Pioneer Municipal High Income Fund, Inc. Pioneer Municipal High Income Opportunities Fund, Inc.

(each a “Fund” and together, the “Funds”)

Each of the Funds listed above announced today that the Fund’s Board of Directors (the “Board”) has approved a plan of liquidation of the Fund. The liquidation pursuant to the plan will be submitted to Fund stockholders for approval at a Special Meeting. The Board recommends that stockholders of each Fund vote for the liquidation of their Fund at the Special Meeting.

As previously announced, effective April 1, 2025, Amundi Asset Management US, Inc., each Fund’s former investment adviser, was combined with Victory Capital Holdings, Inc., the parent company of Victory Capital Management Inc. (“Victory Capital”) (the “Transaction”). In connection with the Transaction, Fund stockholders were asked to approve a new investment advisory agreement with Victory Capital (the “New Agreement”) at a special meeting originally scheduled for March 26, 2025 (the “Postponed Meeting”). Each Fund postponed its meeting because it had not obtained a sufficient number of votes to approve the New Agreement. Because stockholders did not approve the New Agreement prior to the closing of the Transaction, each Fund entered into an interim investment advisory agreement (the “Interim Agreement”) with Victory Capital, which was approved by the Board and took effect upon the closing of the Transaction. The Interim Agreement allows Victory Capital to manage each Fund for up to 150 days following the closing of the Transaction. After considering various options for the Funds, the Board approved, and recommends that stockholders vote for, the liquidation of their Fund.

Each Fund intends to file a proxy statement with the U.S. Securities and Exchange Commission (“SEC”) with respect to the proposal to liquidate the Fund. Copies of each Fund’s proxy statement will also be mailed to each stockholder of record of the Fund. Stockholders are advised to read their Fund’s proxy statement when it is available because it will contain important information. When filed with the SEC, the proxy statement and other documents filed by the Funds will be available free of charge on the SEC website, www.sec.gov.

In light of the Board’s approval of a plan of liquidation for the Fund and its recommendation that stockholders of the Fund vote for liquidation pursuant to the plan, the Postponed Meeting will not be rescheduled.

This press release may contain statements regarding plans and expectations for the future that constitute forward-looking statements within the Private Securities Litigation Reform Act of 1995. Such forward-looking statements are based on such Fund’s current plans and expectations, and are subject to risks and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. Additional information concerning such risks and uncertainties are contained in the Fund’s filings with the SEC. An investment in a Fund involves risk, including loss of principal. Investment return and the value of shares will fluctuate. Any data and commentary provided in this press release are for informational purposes only.

For more information, please call 800-225-6292, or consult the Funds’ website at pioneerinvestments.com. The information contained on the Funds’ website is not part of this press release. Copies of each Fund’s complete audited financial statements are available free of charge upon request.

The funds are closed-end investment companies. Five of the funds trade on the New York Stock Exchange (NYSE) under the following symbols: PHD, PHT, MAV, MHI, and MIO; HNW trades on the NYSE American (NYSEAMER).

Investments involve risk including possible loss of principal, and an investment should be made with an understanding of the risks involved with owning a particular security or asset class. Interested parties are strongly encouraged to seek advice from qualified tax and financial experts regarding the best options for your particular circumstances.

Amundi Distributor US, Inc.

Shareholder Inquiries: Please contact your financial advisor.

To learn more about Pioneer Investments, a Victory Capital Investment Franchise, visit pioneerinvestments.com.

Media: Jessica Davila Director, Global Communications 210-694-9693 jessica_davila@vcm.com

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