Pioneer High Income Fund, Inc. Reports Approval of Stockholders' Proposal to Liquidate and Dissolve the Fund Following Special Meeting

Liquidation Announcement: Pioneer High Income Fund, Inc. (PHT) stockholders approved the fund's liquidation and dissolution during a special meeting, with plans to liquidate its portfolio for cash distributions to shareholders.

Trading and Distribution Timeline: The fund will close its books on September 25, 2025, with expected last trading day on the NYSE around that date, and primary distribution of liquidation proceeds anticipated by September 30, 2025.

Tax Implications: Liquidation is generally a taxable event for U.S. stockholders, who may realize capital gains or losses based on their adjusted basis in the shares; consulting a tax advisor is recommended.

Market Trading Status: After the Determination Date, PHT shares are expected to cease active trading in the secondary market, and there may be no assurance of future market activity for these shares.