BlackRock MuniYield Quality Fund III, Inc. (MYI) reported average annual total returns for periods ended July 31, 2026 of 9.28% at net asset value (NAV) and 9.12% at market price for one year; five-year returns were (0.66)% and (1.61)%, respectively, and ten-year returns were 2.21% and 1.29%. The one-year National Customized Reference Benchmark return was 5.44%, compared with 5.27% for the Bloomberg Municipal Bond Index. Returns reflect reinvested distributions and the fund’s use of leverage, if any.
MYI seeks current income exempt from federal income taxes. Under normal conditions, it invests at least 80% of net assets plus investment borrowings in investment-grade securities and may invest up to 20% of managed assets in below-investment-grade or comparable-quality securities. As of July 31, 2026, its monthly distribution was $0.055500 per common share, annualized distribution was $0.666000, yield on closing market price was 6.25%, and leverage was 41%. Distributions may change and may include return of capital or net realized gain. Reorganizations of BlackRock MuniVest Fund, Inc. and BlackRock MuniVest Fund II, Inc. into MYI took effect on February 23, 2026; the proposed reorganization of BlackRock MuniYield Michigan Quality Fund, Inc. did not occur because the requisite shareholder approvals were not received.
BLACKROCK MUNIYIELD QUALITY FUND III, INC. (MYI) filed an initial statement of beneficial ownership for Francis C. Mahoney. The filing identifies Mahoney as a director of the fund. No equity holdings or transactions are reported in this initial filing.
RiverNorth Capital Management, LLC filed an amended Schedule 13G stating its beneficial ownership in BlackRock MuniYield Quality Fund III, Inc. common shares. RiverNorth reports beneficial ownership of 4,760,961 shares, representing 3.89% of the class as of June 30, 2026.
RiverNorth has sole voting and sole dispositive power over all 4,760,961 shares, with no shared voting or dispositive power. The filing notes that other persons have the right to receive the proceeds from the sale of the reported securities, indicating RiverNorth holds these shares on behalf of underlying clients or accounts.
BLACKROCK MUNIYIELD QUALITY FUND III, INC. filed an insider ownership report for Charles Park, who serves as Chief Compliance Officer. Park previously held this role from June 6, 2014 through June 30, 2023 and has been reappointed effective August 1, 2026. The filing reports no insider transactions or derivative positions.
RiverNorth Capital Management, LLC reported beneficial ownership of 3,366,158 shares of BLACKROCK MUNIYIELD QUALITY FUND III, INC. Common stock (CUSIP 09254E103), representing 5.06% of the class as disclosed in a Schedule 13G. The filing shows RiverNorth has sole voting and dispositive power over these shares.
Toronto-Dominion affiliates amended their Schedule 13D to update their holdings in BlackRock MuniYield Quality Fund III’s Series W-7 Variable Rate Demand Preferred Shares. Toronto Dominion Investments LLC and its parent entities now report beneficial ownership of 5,877 VRDP Shares, representing 100% of this class.
The change results from a February 23, 2026 reorganization in which BlackRock MuniVest Fund and BlackRock MuniVest Fund II were merged into the issuer. TDI’s holdings in term preferred shares of those funds and 3,564 existing VRDP Shares were exchanged on a cashless basis, adding 2,313 additional VRDP Shares. The filing states these were acquired for investment purposes, with voting and consent rights treated consistently with prior disclosures.
BLACKROCK MUNIYIELD QUALITY FUND III, INC. reported an ownership change in its Variable Rate Demand Preferred Shares involving Toronto Dominion Investments LLC (TDI). On February 23, 2026, TDI was reported as having 2,313 Variable Rate Demand Preferred Shares treated as acquired in a non-cash transaction.
According to the disclosure, these 2,313 shares were received from the fund in connection with the reorganization of BlackRock MuniVest Fund, Inc. and BlackRock MuniVest Fund II, Inc. into this fund, through an exchange of previously held preferred shares of those funds for an equal number of Variable Rate Demand Preferred Shares. After this transaction, TDI beneficially owned 5,877 Variable Rate Demand Preferred Shares of the fund. TDI is wholly owned by The Toronto-Dominion Bank through intermediate holding entities, which therefore hold an indirect interest in these shares while jointly filing this statement and expressly disclaiming group status under Section 13(d).
BLACKROCK MUNIYIELD QUALITY FUND III, INC. reported an administrative change in portfolio manager Phillip Soccio’s compensation-related holdings. A total of 109.17 phantom shares, each valued at $11.24, is now shown under this fund following a reorganization.
Phantom shares are described as the economic equivalent of one common share and, after meeting vesting requirements, are payable in cash rather than stock. The filing explains that these units were reallocated from BlackRock MuniVest Fund, Inc. into the current fund using the reorganization exchange ratio, and that Soccio paid no additional consideration for this reallocation.
BLACKROCK MUNIYIELD QUALITY FUND III, INC. director Stayce D. Harris reported an “other” share transaction linked to a fund reorganization. Her directly owned common stock position is now 20.7931 shares.
Effective February 23, 2026, BlackRock MuniVest Fund II, Inc. was reorganized into this fund. In the reorganization, common shareholders of the Target Fund received common shares of the Acquiring Fund based on net asset values as of February 20, 2026. On that date, the Target Fund reported a NAV per share of $11.7926 and the Acquiring Fund reported a NAV per share of $12.0089, with a conversion ratio of 0.98198836 for the Target Fund’s common shares.
Harris received 10 common shares of the Acquiring Fund, plus cash for any fractional shares, in exchange for 10.7937 common shares of the Target Fund.
BLACKROCK MUNIYIELD QUALITY FUND III, INC. director Michael Kalinoski reported an "other" Form 4 transaction tied to fund reorganizations, not an open-market trade. On February 23, 2026, two BlackRock municipal funds were reorganized into this fund.
In one reorganization, he received 1 common share of the Acquiring Fund in exchange for 2.2247 common shares of BlackRock MuniVest Fund, Inc. In a separate reorganization, he received 3,085 common shares in exchange for 3,141.7166 common shares of BlackRock MuniVest Fund II, Inc. Both exchanges were based on each fund’s reported net asset value and stated conversion ratios, resulting in direct ownership of 3,114.5804 common shares after the transactions.