WALTER OCONNOR - 23 Feb 2026 Form 4 Insider Report for BLACKROCK MUNIYIELD QUALITY FUND, INC. (MQY)

Role: Portfolio Manager
Signature: /s/ Gladys Chang as Attorney-in-Fact
Issuer symbol: MQY
Transactions as of: 23 Feb 2026
Net transactions value: +$16,754
Form type: 4
Filing time: 25 Feb 2026, 19:38:07 UTC
Previous filing: 11 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
OCONNOR WALTER	Portfolio Manager	50 HUDSON YARDS, NEW YORK	/s/ Gladys Chang as Attorney-in-Fact	25 Feb 2026	0001081506

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MQY	Phantom Shares	Other	$4,295	+366		$11.74	366	23 Feb 2026	Common Stock	366		Direct	F1, F2
transaction	MQY	Phantom Shares	Other	$6,227	+530	+145%	$11.74	896	23 Feb 2026	Common Stock	530		Direct	F1, F3
transaction	MQY	Phantom Shares	Other	$6,232	+531	+59%	$11.74	1,427	23 Feb 2026	Common Stock	531		Direct	F1, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.
F2	Effective as of February 23, 2026 BlackRock Investment Quality Municipal Trust (the "Target Fund") was reorganized into BlackRock MuniYield Quality Fund, Inc. (the "Acquiring Fund"). In connection with this reorganization, phantom stock units previously awarded to Walter O'Connor in the Target Fund were reallocated to the Acquiring Fund. The number of phantom stock units in the Acquiring Fund (365.84 units at $11.74 per share) represents the value of the reporting person's former Target Fund phantom stock units converted at the exchange ratio used in the reorganization. No additional consideration was paid by the reporting person in connection with this reallocation.
F3	Effective as of February 23, 2026 BlackRock MuniYield Quality Fund II, Inc. Income Trust (the "Target Fund") was reorganized into BlackRock MuniYield Quality Fund, Inc. (the "Acquiring Fund"). In connection with this reorganization, phantom stock units previously awarded to Walter O'Connor in the Target Fund were reallocated to the Acquiring Fund. The number of phantom stock units in the Acquiring Fund (530.41 units at $11.74 per share) represents the value of the reporting person's former Target Fund phantom stock units converted at the exchange ratio used in the reorganization. No additional consideration was paid by the reporting person in connection with this reallocation.
F4	Effective as of February 23, 2026, BlackRock MuniYield Fund, Inc. (the "Target Fund") was reorganized into BlackRock MuniYield Quality Fund, Inc. (the "Acquiring Fund"). In connection with this reorganization, phantom stock units previously awarded to Walter O'Connor in the Target Fund were reallocated to the Acquiring Fund. The number of phantom stock units in the Acquiring Fund (530.81 units at $11.74 per share) represents the value of the reporting person's former Target Fund phantom stock units converted at the exchange ratio used in the reorganization. No additional consideration was paid by the reporting person in connection with this reallocation.