# EDGAR Filing Document

**Accession Number:** 0001232860
**File Stem:** 0001193125-25-133456
**Filing Date:** 2025-6
**Character Count:** 2757
**Document Hash:** 67a0c945848d6173a5eb65b67a925fb9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-133456.hdr.sgml**: 20250602

**ACCESSION NUMBER**: 0001193125-25-133456

**CONFORMED SUBMISSION TYPE**: 424B3

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250602

**DATE AS OF CHANGE**: 20250602

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BlackRock Municipal Credit Alpha Portfolio, Inc.
- **CENTRAL INDEX KEY:** 0001232860

**ORGANIZATION NAME:**
- **EIN:** 000000000

**FILING VALUES:**
- **FORM TYPE:** 424B3
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-282684
- **FILM NUMBER:** 251016190

**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 MUNICIPAL INCOME FUND, INC.
- **DATE OF NAME CHANGE:** 20211001

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BLACKROCK MUNI INTERMEDIATE DURATION FUND, INC.
- **DATE OF NAME CHANGE:** 20120921

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** BLACKROCK MUNI INTERMEDIATE DURATION FUND INC
- **DATE OF NAME CHANGE:** 20061026

**Filed Pursuant to Rule 424(b)(3)<br>Registration File No.: 333-282684** 

**BLACKROCK MUNICIPAL CREDIT ALPHA PORTFOLIO, INC.** 

**Supplement dated June 2, 2025 to the** 

**Statement of Additional Information of** 

**BlackRock Municipal Credit Alpha Portfolio, Inc.,** 

**dated March 26, 2025, as supplemented to date** 

This supplement amends certain information in the Statement of Additional Information ("SAI") of BlackRock Municipal Credit Alpha Portfolio, Inc. (the "Fund"), dated March 26, 2025, as supplemented to date. Unless otherwise indicated, all other information included in the SAI that is not inconsistent with the information set forth in this supplement remains unchanged. Capitalized terms not otherwise defined in this supplement have the same meaning as in the SAI.

**Effective immediately, the following change is made to the Fund's SAI:** 

**The list following the last paragraph in the sub-section of the SAI entitled "Distribution of Fund Shares — Additional Payments to Dealers" is deleted in its entirety and replaced with the following:** 

American Enterprise Investment Services, Inc.

Charles Schwab & Co., Inc.

J.P. Morgan Securities LLC

LPL Financial LLC

Morgan Stanley Smith Barney LLC

National Financial Services LLC

Pershing LLC

RBC Capital Markets

SEI Private Trust Company

UBS Financial Services Inc.

U.S. Bank, National Association

Vanguard Marketing Corporation

Wells Fargo Clearing Services, LLC

**Investors should retain this supplement for future reference.** 

SAI-MUI-0525SUP