Company: MYI
Filing Date: 2025-09-05
Form Type: 424B3
Source: 0001193125-25-196285
Chunk: 65

Company: BLACKROCK MUNIYIELD QUALITY FUND III, INC.
Filing Date: 2025-09-05
Form: 424B3
Chunk 65
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 municipal bonds transferred are lower grade municipal bonds, the TOB Trust transaction includes a credit enhancement feature that provides for the timely
payment of principal and interest on the bonds to the TOB Trust by a credit enhancement provider. The TOB Trust would be responsible for the payment of the credit enhancement fee and the Acquiring Fund, as a TOB Residual holder, would be responsible
for reimbursement of any payments of principal and interest made by the credit enhancement provider.

Any leverage
achieved through the Acquiring Fund’s investment in TOB Residuals will increase the possibility that common share long-term returns will be diminished if the cost of the TOB Floaters issued by a TOB Trust exceeds the return on the securities
in the TOB Trust. If the income and gains earned on municipal securities owned by a TOB Trust that issues TOB Residuals to the Acquiring Fund are greater than the payments due on the TOB Floaters issued by the TOB Trust, the Acquiring Fund’s
returns will be greater than if it had not invested in the TOB Residuals.

Although the Acquiring Fund generally would
unwind a TOB transaction rather than try to sell a TOB Residual, if it did try to sell a TOB Residual, its ability to do so would depend on the liquidity of the TOB Residual. TOB Residuals have varying degrees of liquidity based, among other things,
upon the liquidity of the underlying securities deposited in the TOB Trust. The market price of TOB Residuals is more volatile than the underlying municipal bonds due to leverage.

The leverage attributable to the Acquiring Fund’s use of TOB Residuals may be “called away” on relatively
short notice and therefore may be less permanent than more traditional forms of leverage. The TOB Trust may be collapsed without the consent of the Acquiring Fund upon the occurrence of termination events, as defined in the TOB Trust agreements,
including if TOB Floaters that are tendered to the TOBs Liquidity Provider cannot be remarketed. Attempts to remarket tendered securities often failed during volatile market conditions in the past. Upon the occurrence of a termination event, a TOB
Trust would be liquidated with the proceeds applied first to any accrued fees owed to the trustee of the TOB Trust, the remarketing agent of the TOB Floaters and the TOBs Liquidity Provider. Upon certain termination events, the holders of the TOB
Floaters would be paid before the TOB