Company: MYI
Filing Date: 2025-08-08
Form Type: PRE 14A
Source: 0001193125-25-176952
Chunk: 263

Company: BLACKROCK MUNIYIELD QUALITY FUND III, INC.
Filing Date: 2025-08-08
Form: PRE 14A
Chunk 263
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B Trust Certificates, end of period (000)                                              |     | $           | 114,111 |       |     | $          |  75,443 |    |     | $          |  25,430 |    |     | $           |  93,902 |       |     | $          | 106,029 |    |     | $          |  97,266 |    |     | $          | 100,463 |    |
| Asset coverage per $1,000 of TOB Trust Certificates, end of period(m)                    |     | $           |   6,485 |       |     | $          |   9,803 |    |     | $          |  30,475 |    |     | $           |   9,373 |       |     |            |     N/A |    |     |            |     N/A |    |     |            |     N/A |    |
| Portfolio turnover rate                                                                  |     |             |      18 | %     |     |            |      37 | %  |     |            |      37 | %  |     |             |      26 | %     |     |            |      13 | %  |     |            |      18 | %  |     |            |      31 | %  |

| (a) | Based on average Common Shares outstanding. |

| (b) | Distributions for annual periods determined in accordance with U.S. federal income tax regulations. |

| (c) | A portion of the distributions from net investment income may be deemed a return of capital or net realized 
 gain at fiscal year-end.                                                                                    |

| (d) | Total returns based on market price, which can be significantly greater or less than the net asset value, may                                                                       
 result in substantially different returns. Where applicable, excludes the effects of any sales charges and assumes the reinvestment of distributions at actual reinvestment prices. |

143

| (e) | Not annualized. |

| (f) | Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. |

| (g) | Annualized. |

| (h) | Interest expense, fees and amortization of offering costs related to TOB Trusts and/or VMTP Shares. See Note 
 4 and Note 10 of the Notes to Financial Statements for details.                                              |

| (i) | Calculated