X0202 SCHEDULE 13D/A 0002052595-26-000050 0001344146 XXXXXXXX LIVE 2 VARIABLE RATE DEMAND PREFERRED SHARES 11/09/2026 false 0000883412 09254E863 BLACKROCK MUNIYIELD QUALITY FUND III, INC.

100 Bellevue Parkway Wilmington DE 19809

Toronto-Dominion Investments, (212) 827-7488 1 Vanderbilt Avenue New York NY 10017 0001344146 N TORONTO DOMINION INVESTMENTS LLC b WC N DE 0.00 5877.00 0.00 5877.00 5877.00 N 100 CO 0000744464 N TORONTO DOMINION HOLDINGS (U.S.A.), INC. b WC N DE 0.00 5877.00 0.00 5877.00 5877.00 N 100 CO 0001710914 N TD GROUP US HOLDINGS LLC b WC N DE 0.00 5877.00 0.00 5877.00 5877.00 N 100 OO 0000947263 N THE TORONTO-DOMINION BANK b WC N DE 0.00 5877.00 0.00 5877.00 5877.00 N 100 BK VARIABLE RATE DEMAND PREFERRED SHARES BLACKROCK MUNIYIELD QUALITY FUND III, INC. 100 Bellevue Parkway Wilmington DE 19809 This Amendment No. 2 (this "Amendment") amends, as set forth below, the statement on Schedule 13D, dated June 22, 2022 and filed with the SEC on July 5, 2022 (as amended to the date hereof, the "Original Schedule 13D"), for Toronto Dominion Investments LLC ("TDI"), Toronto Dominion Holdings (U.S.A.), Inc. ("TDH"), TD Group US Holdings LLC ("TD GUS"), and The Toronto-Dominion Bank ("TD Bank") (collectively, the "Reporting Persons") with respect to Series W-7 Variable Rate Demand Preferred Shares (CUSIP No. 09254E863) ("VRDP Shares") of BlackRock MuniYield Quality Fund III, Inc. (the "Issuer"). This Amendment is being filed in relation to the amendment to the amended and restated fee agreement, dated as of February 23, 2026 (as amended, the "VRDP Fee Agreement"), relating to the VRDP Shares of the Issuer. Item 2 of the Original Schedule 13D is hereby amended by deleting Schedule I and Schedule II referenced therein and replacing them with Schedule I and Schedule II included with this Amendment. Item 6 of the Original Schedule 13D is hereby amended by adding the following at the end thereof: "Effective as of October 23, 2026, the VRDP Fee Agreement, dated as of February 23, 2026, has been amended by the Omnibus Amendment to Fee Agreements, dated October 23, 2026." Item 7 of the Original Schedule 13D is hereby amended by deleting Exhibit 99.1, Exhibit 99.2 and Exhibit 99.3 thereto and the insertion of the following exhibits: Exhibit Description of Exhibit 99.1 Agreement 99.2 Certificate for TD 99.3 Secretary's Certificate for TD GUS 99.11 Amended and Restated Fee Agreement, dated February 23, 2026 99.12 Omnibus Amendment to Fee Agreements, dated October 23, 2026 TORONTO DOMINION INVESTMENTS LLC /s/ Christina Petrou 11/09/2026 TORONTO DOMINION HOLDINGS (U.S.A.), INC. /s/ Christina Petrou 11/09/2026 TD GROUP US HOLDINGS LLC /s/ Andre Ramos 11/09/2026 THE TORONTO-DOMINION BANK /s/ Christina Petrou 11/09/2026