MYI director reports shares from fund reorganization

BLACKROCK MUNIYIELD QUALITY FUND III, INC. director Stayce D. Harris reported an “other” share transaction linked to a fund reorganization.

Rhea-AI Filing Summary

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.

Insider Trade Summary

Other: 10 shares

Other 1 txn

Insider Harris Stayce D.

Role Director

Type	Security	Shares	Price	Value
Other	Common Stock	10	$0.00	$0.00

Holdings After Transaction: Common Stock — 20.7931 shares (Direct)

Footnotes (1)

1. F1. Effective as of February 23, 2026 BlackRock MuniVest Fund II, Inc. (the "Target Fund") was reorganized into BlackRock MuniYield Quality Fund III, Inc. (the "Acquiring Fund") ]. In the reorganization, common shareholders of the Target Fund received common shares of the Acquiring Fund having a value equal to the aggregate NAV of the Target Fund common shares surrendered as determined at the close of business on February 20, 2026, less the costs of the reorganization. As of February 20, 2026, the Target Fund reported a NAV per share of $11.7926 and the Acquiring Fund reported a NAV per share of $12.0089. The conversion ratio for the Target Fund's common shares was 0.98198836. In the reorganization, Stayce D. Harris received 10 common shares (and cash for fractional shares, if any) of the Acquiring Fund in exchange for her 10.7937 common shares of the Target Fund.

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Accepted by SEC EDGAR 02/25/2026 - 08:28 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Harris Stayce D.

(Last) (First) (Middle)

50 HUDSON YARDS

(Street)

NEW YORK NY 10001

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BLACKROCK MUNIYIELD QUALITY FUND III, INC. [ MYI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
02/23/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/23/2026		J(1)		10	A	(1)	20.7931	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Effective as of February 23, 2026 BlackRock MuniVest Fund II, Inc. (the "Target Fund") was reorganized into BlackRock MuniYield Quality Fund III, Inc. (the "Acquiring Fund") ]. In the reorganization, common shareholders of the Target Fund received common shares of the Acquiring Fund having a value equal to the aggregate NAV of the Target Fund common shares surrendered as determined at the close of business on February 20, 2026, less the costs of the reorganization. As of February 20, 2026, the Target Fund reported a NAV per share of $11.7926 and the Acquiring Fund reported a NAV per share of $12.0089. The conversion ratio for the Target Fund's common shares was 0.98198836. In the reorganization, Stayce D. Harris received 10 common shares (and cash for fractional shares, if any) of the Acquiring Fund in exchange for her 10.7937 common shares of the Target Fund.

	/s/ Gladys Chang as Attorney-in-Fact	02/25/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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