Filed Pursuant to Rule 424(b)(3)
Registration File No.: 333-288712
BLACKROCK LONG-TERM MUNICIPAL ADVANTAGE TRUST
BLACKROCK MUNIASSETS FUND, INC.
Important Information Regarding the Joint Proxy Statement/Prospectus, dated September 4, 2025 for BlackRock Long-Term Municipal Advantage Trust (“BTA”) and BlackRock MuniAssets Fund, Inc. (“MUA” or the “Acquiring Fund”)
The following changes are made to the Joint Proxy Statement/Prospectus:
The Section of the Joint Proxy Statement/Prospectus entitled “Voting Information and Requirements – Voting Requirement for Proposal 2: The Issuance of Acquiring Fund Common Shares” is deleted in its entirety and replaced with the following information:
Voting Requirement for Proposal 2: The Issuance of Acquiring Fund Common Shares
| Proposal |
Required Approval of Shareholders | |||
| Proposal 2: The common shareholders and VRDP Holders of the Acquiring Fund are being asked to vote as a single class on a proposal to approve the issuance of additional Acquiring Fund common shares in connection with the Reorganization. |
Majority of votes entitled to be cast present at the Special Meeting or represented by proxy |
All other references in the Joint Proxy Statement/Prospectus and the accompanying exhibits referencing the vote requirement for shareholders to approve Proposal 2 are hereby revised and restated to reflect the vote requirement stated in the table above.