Company: BLE
Filing Date: 2025-02-06
Form Type: DEFA14A
Source: 0001193125-25-021786
Chunk: 0

Company: BLACKROCK MUNICIPAL INCOME TRUST II
Filing Date: 2025-02-06
Form: DEFA14A
Chunk 0
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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A INFORMATION

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

| Filed by the Registrant  ☒                        |     |                                                                                      |
| Filed by a Party other than the Registrant  ☐     |     |                                                                                      |
| Check the appropriate box:                        |     |                                                                                      |
| ☐    Preliminary Proxy Statement                  
 ☐    Definitive                                   
 Proxy Statement                                   |     | ☐    Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐    Definitive Additional Materials              |     |                                                                                      |
| ☒    Soliciting Material Pursuant to § 240.14a-12 |     |                                                                                      |

BlackRock Investment Quality Municipal Trust, Inc.

BlackRock Long-Term Municipal Advantage Trust

BlackRock MuniAssets Fund, Inc.

BlackRock Municipal Income Quality Trust

BlackRock Municipal Income Trust

BlackRock Municipal Income Trust II

BlackRock MuniHoldings Fund, Inc.

BlackRock MuniYield Fund, Inc.

BlackRock MuniYield Quality Fund, Inc.

BlackRock MuniYield Quality Fund II, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy
Statement, if Other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

| ☒ |     | No fee required.                                                                                     |
| ☐ |     | Fee paid previously with preliminary materials.                                                      |
| ☐ |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

Dear [__]

The
BlackRock closed-end funds listed below will be holding joint special meetings of shareholders (each, a “Joint Special Meeting”) in order to consider and vote on certain reorganizations among the
below funds (the “Funds”), as announced on January 21, 2025 (BlackRock Announces Board Approval of Closed-EndFund Reorganizations | Business Wire) and as detailed