Company: MYI
Filing Date: 2025-09-02
Form Type: N-14 8C/A
Source: 0001193125-25-193985
Chunk: 37

Company: BLACKROCK MUNIYIELD QUALITY FUND III, INC.
Filing Date: 2025-09-02
Form: N-14 8C/A
Chunk 37
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 Michigan Quality Fund, inc. (NYSE Ticker: MIY) (“MIY”), BlackRock MuniVest Fund, Inc. (NYSE Ticker: MVF) (“MVF”) and BlackRock MuniYield Quality Fund III, Inc. (NYSE Ticker: MYI)
(“MYI” or the “Acquiring Fund,” and collectively with MVT, MIY and MVF, the “Funds,” and each, a “Fund”) in connection with the solicitation of proxies by each Fund’s Board of Directors (each, a
“Board,” the members of which are referred to as “Board Members”). Each of MVT, MIY and MVF may be referred to herein individually as a “Target Fund” or collectively as the “Target Funds.” The proxies
will be voted at the joint special meeting of the shareholders of each Fund and at any and all adjournments, postponements and delays thereof (the “Special Meeting”). The Special Meeting will be held on October 15, 2025 at 1:00 p.m.
(Eastern Time) to consider the proposals set forth below and discussed in greater detail elsewhere in this 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. If you are unable to attend the
Special Meeting or any adjournment or postponement thereof, the Board of your Fund recommends that you vote your common shares, by completing and returning the enclosed proxy card or by recording your voting instructions by telephone or via the
internet. The approximate mailing date of this Joint Proxy Statement/Prospectus and accompanying form of proxy is August [●], 2025.

THE SEC HAS NOT APPROVED OR DISAPPROVED THESE SECURITIES OR PASSED UPON THE ADEQUACY OF THIS JOINT PROXY STATEMENT/PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

The purposes of the Special Meeting are:

Proposal 1: The Reorganizations of the Funds

Proposal 1(A): The common shareholders and holders of Variable Rate Muni Term Preferred Shares
(“VMTP Shares” and the holders thereof, “VMTP Holders”) of MVT are being asked to vote as