Company: MYI
Filing Date: 2025-09-05
Form Type: 424B3
Source: 0001193125-25-196285
Chunk: 34

Company: BLACKROCK MUNIYIELD QUALITY FUND III, INC.
Filing Date: 2025-09-05
Form: 424B3
Chunk 34
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uance, the “Issuances”).

Each Reorganization is not contingent upon the approval of any other Reorganization.
If a Reorganization is not consummated, the Fund for which such Reorganization(s) was not consummated would continue to exist and operate on a standalone basis.

Shareholders of record of each Fund as of the close of business on August 18, 2025, are entitled to notice of and to vote at the Special
Meeting or any adjournment or postponement thereof.

The Funds are soliciting the vote of their common shareholders on Proposal 1(A),
Proposal 1(C), Proposal 1(E), Proposal 2(A), Proposal 2(B) and Proposal 2(C) through the joint proxy statement/prospectus.

Each Fund is
separately soliciting the votes of its respective preferred shareholders on each proposal through a separate proxy statement and not through the joint proxy statement/prospectus.

The Special Meeting will be held in a virtual meeting format only. Shareholders will not have to travel to attend the Special Meeting but will
be able to view the meeting live, have a meaningful opportunity to participate, including the ability to ask questions of management, and cast their votes by accessing a web link.

All shareholders are cordially invited to attend the Special Meeting. In order to avoid delay and additional expense for the Funds and to assure that your shares are represented, please vote as promptly as possible, regardless of whether or not you plan to attend the Special Meeting. You may vote by mail, by telephone or over the Internet. To vote by mail, please mark, sign, date and mail the enclosed proxy card or voting instruction form. No postage is required if mailed in the United States. To vote by telephone, please call the toll-free number located on your proxy card or voting instruction form and follow the recorded instructions. To vote over the Internet, go to the Internet address provided on your proxy card or voting instruction form and follow the instructions.

If your shares in a Fund are registered in your name, you may attend and participate in the Special Meeting at https://meetnow.global/MUUJ79Zby entering the control number found in the shaded box on your proxy card on the date and time of the Special Meeting. You may vote during the Special Meeting by following the instructions that will be available on the Special Meeting website during the Special Meeting.

If you are a beneficial shareholder of a Fund (that is if you hold your Fund shares through a bank, broker, financial intermediary or other