Company: MYI
Filing Date: 2025-09-05
Form Type: 424B3
Source: 0001193125-25-196285
Chunk: 245

Company: BLACKROCK MUNIYIELD QUALITY FUND III, INC.
Filing Date: 2025-09-05
Form: 424B3
Chunk 245
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 Shares”), and 1,536 shares of Series W-7 Variable Rate Muni-Term Preferred Shares,
par value $0.10, with a liquidation preference of $100,000 (the “MVF VMPT Shares”).

The Acquiring
Fund’s charter authorizes the issuance of 199,973,636 shares of common stock, par value $0.10 and 6,400 Auction Market Preferred Stock, par value $0.05, with a liquidation preference of $25,000, plus an amount equal to all accumulated but
unpaid dividends (whether or not earned or declared) (the “Acquiring Fund AMPS Non-Series Shares”), 1,100 shares of Auction Market Preferred Stock, Series A, par value $0.05, with a liquidation
preference of $25,000, plus an amount equal to all accumulated but unpaid dividends (whether or not earned or declared) (the “Acquiring Funds AMPS Series A Shares”), 1,100 shares of Auction Market Preferred Stock, Series B, par value
$0.05, with a liquidation preference of $25,000, plus an amount equal to all

136

accumulated but unpaid dividends (whether or not earned or declared) (the “Acquiring Funds AMPS Series B Shares”), 1,100 shares of Auction Market Preferred Stock, Series C, par value
$0.05, with a liquidation preference of $25,000, plus an amount equal to all accumulated but unpaid dividends (whether or not earned or declared) (the “Acquiring Funds AMPS Series C Shares”), 1,100 shares of Auction Market Preferred
Stock, Series D, par value $0.05, with a liquidation preference of $25,000, plus an amount equal to all accumulated but unpaid dividends (whether or not earned or declared) (the “Acquiring Funds AMPS Series D Shares”), 2,000 shares of
Auction Market Preferred Stock, Series E, par value $0.05, with a liquidation preference of $25,000, plus an amount equal to all accumulated but unpaid dividends (whether or not earned or declared) (the “Acquiring Funds AMPS Series E
Shares”), 2,400 shares of Auction Market Preferred Stock, Series F, par value $0.10, with a liquidation preference of $25,000, plus an amount equal to all accumulated but unpaid dividends (whether or not earned or declared) (the