Company: MYI
Filing Date: 2025-09-02
Form Type: N-14 8C/A
Source: 0001193125-25-193985
Chunk: 36

Company: BLACKROCK MUNIYIELD QUALITY FUND III, INC.
Filing Date: 2025-09-02
Form: N-14 8C/A
Chunk 36
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 ADDITIONAL COMMON SHARES OF THE ACQUIRING FUND, AS APPLICABLE, IN EACH CASE, AS DESCRIBED IN THE JOINT PROXY STATEMENT/PROSPECTUS FOR COMMON SHAREHOLDERS OR THE PROXY STATEMENT FOR PREFERRED SHAREHOLDERS, AS APPLICABLE.

IN ORDER TO AVOID THE ADDITIONAL EXPENSE OF FURTHER SOLICITATION, WE ASK THAT YOU MAIL YOUR PROXY CARD OR RECORD YOUR VOTING INSTRUCTIONS BY TELEPHONE OR VIA THE INTERNET PROMPTLY.

For the Board of each Fund,

JOHN M. PERLOWSKI

President and Chief Executive Officer of the Funds

[●]

YOUR VOTE IS IMPORTANT.

PLEASE VOTE PROMPTLY BY SIGNING AND RETURNING THE ENCLOSED PROXY CARD OR BY RECORDING YOUR VOTING INSTRUCTIONS BY TELEPHONE OR VIA THE INTERNET, NO MATTER HOW MANY SHARES YOU OWN.

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF PROXY MATERIALS FOR THE JOINT SPECIAL MEETING OF SHAREHOLDERS TO BE HELD ON OCTOBER 15, 2025.

THE PROXY STATEMENT FOR THIS MEETING IS AVAILABLE AT:

HTTPS://WWW.PROXY-DIRECT.COM/BLK-34668

iv

The information in this Joint Proxy Statement/Prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This Joint Proxy Statement/Prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any state where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED SEPTEMBER 2, 2025

JOINT PROXY STATEMENT/PROSPECTUS

Dated [●], 2025

BLACKROCK MUNIVEST FUND II, INC.

BLACKROCK MUNIYIELD MICHIGAN QUALITY FUND, INC.

BLACKROCK MUNIVEST FUND, INC.

BLACKROCK MUNIYIELD QUALITY FUND III, INC.

100 Bellevue Parkway

Wilmington, Delaware 19809

(800) 882-0052

This Joint Proxy Statement/Prospectus is furnished to you as a common shareholder of BlackRock MuniVest Fund II, Inc. (NYSE Ticker: MVT)
(“MVT”), BlackRock MuniYield