Company: MYI
Filing Date: 2025-09-05
Form Type: 424B3
Source: 0001193125-25-196285
Chunk: 153

Company: BLACKROCK MUNIYIELD QUALITY FUND III, INC.
Filing Date: 2025-09-05
Form: 424B3
Chunk 153
---
 expenses and interest on
the TOB Floaters. The Acquiring Fund contributes municipal bonds to the TOB Trust and is paid the cash received by the TOB Trust from the sale of the TOB Floaters, less certain transaction costs, and typically will invest the cash to purchase
additional municipal bonds or other investments permitted by its investment policies. If the Acquiring Fund ever purchases all or a portion of the TOB Floaters sold by the TOB Trust, it may surrender those TOB Floaters together with a proportionate
amount of TOB Residuals to the TOB Trust in exchange for a proportionate amount of the municipal bonds owned by the TOB Trust.

Other BlackRock-Advised Funds (as defined below) may contribute municipal bonds to a TOB Trust into which the Acquiring Fund
has contributed municipal bonds. If multiple BlackRock-advised Funds participate in

82

the same TOB Trust, the economic rights and obligations under the TOB Residual will generally be shared among the funds ratably in proportion to their participation in the TOB Trust.

The municipal bonds transferred to a TOB Trust typically are high grade municipal bonds. In certain cases, when 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.

The TOB Residuals held by the Acquiring Fund generally provide the Acquiring Fund with the right to cause the holders of a
proportional share of the TOB Floaters to tender their notes to the TOB Trust at par plus accrued interest. Thereafter, the Acquiring Fund may withdraw a corresponding share of the municipal bonds from the TOB Trust. As a result, a TOB transaction,
in effect, creates exposure for the Acquiring Fund to the entire return of the municipal bonds in the TOB Trust, with a net cash investment by the Acquiring Fund that is less than the value of the municipal bonds in the TOB Trust. This multiplies
the positive or negative impact of the municipal bonds’ return within the Acquiring Fund (thereby creating leverage). The leverage within a TOB Trust depends on the value of the municipal bonds deposited