# EDGAR Filing Document

**Accession Number:** 0000890196
**File Stem:** 0001193125-26-072549
**Filing Date:** 2026-2
**Character Count:** 8375
**Document Hash:** 1ed3e13ed51e79dfcee42a130e86f5f4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-072549.hdr.sgml**: 20260225

**ACCESSION NUMBER**: 0001193125-26-072549

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260223

**FILED AS OF DATE**: 20260225

**DATE AS OF CHANGE**: 20260225

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** OCONNOR WALTER
- **CENTRAL INDEX KEY:** 0001081506

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 811-06660
- **FILM NUMBER:** 26681049

**MAIL ADDRESS:**
- **STREET 1:** 800 SCUDDERS MILL ROAD
- **CITY:** PLAINSBORO
- **STATE:** NJ
- **ZIP:** 08536
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BLACKROCK MUNIYIELD QUALITY FUND, INC.
- **CENTRAL INDEX KEY:** 0000890196
- **STANDARD INDUSTRIAL CLASSIFICATION:** UNKNOWN SIC - 0000 [0000]

**ORGANIZATION NAME:**
- **EIN:** 223170744
- **STATE OF INCORPORATION:** NJ
- **FISCAL YEAR END:** 1031

**BUSINESS ADDRESS:**
- **STREET 1:** 100 BELLEVUE PARKWAY
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19809
- **BUSINESS PHONE:** 800-441-7762

**MAIL ADDRESS:**
- **STREET 1:** 100 BELLEVUE PARKWAY
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19809

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BLACKROCK MUNIYIELD QUALITY FUND INC
- **DATE OF NAME CHANGE:** 20061026

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MUNIYIELD QUALITY FUND INC
- **DATE OF NAME CHANGE:** 19920929

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>OCONNOR WALTER<br><sub>(Last) (First) (Middle)</sub><br>50 HUDSON YARDS<br><sub>(Street)</sub><br>NEW YORK, NY 10001<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-23 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[ ] Officer (give title below) [X] Other (specify below)<br>_Portfolio Manager_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>BLACKROCK MUNIYIELD QUALITY FUND, INC. [ MQY ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Phantom Shares | <sup>(1)</sup> | 2026-02-23 |  | J<sup>(2)</sup> |  | 365.84 |  | <sup>(1)(2)</sup> | <sup>(1)(2)</sup> | Common Stock | 365.84 | 11.74<sup>(2)</sup> | 365.84 | D |  |
| Phantom Shares | <sup>(1)</sup> | 2026-02-23 |  | J<sup>(3)</sup> |  | 530.41 |  | <sup>(1)(3)</sup> | <sup>(1)(3)</sup> | Common Stock | 530.41 | 11.74<sup>(3)</sup> | 896.25 | D |  |
| Phantom Shares | <sup>(1)</sup> | 2026-02-23 |  | J<sup>(4)</sup> |  | 530.81 |  | <sup>(1)(4)</sup> | <sup>(1)(4)</sup> | Common Stock | 530.81 | 11.74<sup>(4)</sup> | 1427.06 | D |  |

---

### Footnotes:

(1) A phantom share is the economic equivalent of one share of common stock and, subject to the applicable vesting requirements, becomes payable in cash.

(2) 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.

(3) 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.

(4) 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.

**Signature:** /s/ Gladys Chang as Attorney-in-Fact  
**Date:** 2026-02-25

### Remarks:

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.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**