Adjournment of Special Meeting of Stockholders

Pioneer Diversified High Income Fund, Inc.

Pioneer Floating Rate Fund, Inc.

Pioneer High Income Fund, Inc.

Each of Pioneer Diversified High Income Fund, Inc. (HNW), Pioneer Floating Rate Fund, Inc. (PHD) and Pioneer High Income Fund, Inc. (PHT) held a special meeting of stockholders earlier today. At each special meeting, fund stockholders were asked to approve the liquidation and dissolution of each fund pursuant to the Plan of Liquidation and Dissolution adopted by the Board of Directors of the fund. Each special meeting was adjourned to August 13, 2025 at 2:00 p.m. ET to allow more time for stockholders to vote. The June 9, 2025 record date for stockholders entitled to vote at the adjourned special meeting remains unchanged.

The funds are closed-end investment companies that trade on the New York Stock Exchange (NYSE) under the following symbols: PHD and PHT; 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.

Victory Capital Services, Inc. (VCS)

Keep in mind, distribution rates are not guaranteed. A fund’s distribution rate may be affected by numerous factors, including changes in actual or projected investment income, the level of undistributed net investment income, if any, and other factors. Shareholders should not draw any conclusions about a fund’s investment performance based on a fund’s current distributions. Closed-end funds, unlike open-end funds, are not continuously offered. Once issued, common shares of closed-end funds are bought and sold in the open market through a stock exchange and frequently trade at prices lower than their net asset value. Net Asset Value (NAV) is total assets less total liabilities divided by the number of common shares outstanding. For performance data on Pioneer Investments’ closed-end funds, please call 800-225-6292 or visit our closed-end pricing page.

Shareholder Inquiries: Please contact your financial advisor.

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