<SEC-DOCUMENT>0001193125-23-080573.txt : 20230327
<SEC-HEADER>0001193125-23-080573.hdr.sgml : 20230327
<ACCEPTANCE-DATETIME>20230327170412
ACCESSION NUMBER:		0001193125-23-080573
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20230327
DATE AS OF CHANGE:		20230327

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BLACKROCK MUNICIPAL INCOME TRUST
		CENTRAL INDEX KEY:			0001137393
		IRS NUMBER:				510409115
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1031

	FILING VALUES:
		FORM TYPE:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-259605
		FILM NUMBER:		23765242

	BUSINESS ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
		BUSINESS PHONE:		888-825-2257

	MAIL ADDRESS:	
		STREET 1:		100 BELLEVUE PARKWAY
		STREET 2:		MUTUAL FUND DEPARTMENT
		CITY:			WILMINGTON
		STATE:			DE
		ZIP:			19809
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>d492592d424b3.htm
<DESCRIPTION>BLACKROCK MUNICIPAL INCOME TRUST
<TEXT>
<HTML><HEAD>
<TITLE>BLACKROCK MUNICIPAL INCOME TRUST</TITLE>
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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>Filed Pursuant to Rule 424(b)(3)<BR>Registration File No.: 333-259605 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>BLACKROCK MUNICIPAL INCOME TRUST </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Supplement dated March&nbsp;27, 2023 to the </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Statement of Additional Information (&#147;SAI&#148;), dated March&nbsp;17, 2022, and the </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>SAI Supplements dated July&nbsp;18, 2022, October&nbsp;14, 2022 and January&nbsp;3, 2023 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">This supplement amends certain information in the SAI, dated March&nbsp;17, 2022, as supplemented on July&nbsp;18, 2022, October&nbsp;14, 2022 and
January&nbsp;3, 2023, of BlackRock Municipal Income Trust (the &#147;Trust&#148;). Unless otherwise indicated, all 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 meanings as in the SAI. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>The following changes are made to the Trust&#146;s
SAI: </B></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>The section of the SAI entitled &#147;Management of the Trust &#151; Portfolio Management&#148; is deleted in its entirety and replaced with
the following: </B></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Portfolio Management </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><I>Portfolio Manager Assets Under Management </I></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The following
table sets forth information about funds and accounts other than the Trust for which the portfolio managers are primarily responsible for
<FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">the&nbsp;day-to-day&nbsp;portfolio</FONT></FONT> management as of July&nbsp;31, 2022:<B> </B> </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" ALIGN="center">


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<TD></TD>

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<TD></TD>

<TD VALIGN="bottom" WIDTH="7%"></TD>
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<TD></TD>

<TD VALIGN="bottom" WIDTH="7%"></TD>
<TD></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" COLSPAN="5" ALIGN="center" STYLE="border-bottom:1.00pt solid #000000"><B>(ii)&nbsp;Number&nbsp;of&nbsp;Other&nbsp;Accounts&nbsp;Managed<BR>and&nbsp;Assets by Account Type</B></TD>
<TD VALIGN="bottom">&nbsp;</TD>
<TD VALIGN="bottom" COLSPAN="5" ALIGN="center" STYLE="border-bottom:1.00pt solid #000000"><B>(iii)&nbsp;Number&nbsp;of&nbsp;Other&nbsp;Accounts&nbsp;and&nbsp;Assets<BR>for Which Advisory Fee
is<BR><FONT STYLE="white-space:nowrap">Performance-Based</FONT></B></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><B>(i)&nbsp;Name&nbsp;of&nbsp;Portfolio<BR>Manager</B></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Other<BR>Registered<BR>Investment<BR>Companies</B></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Other<BR>Pooled<BR>Investment<BR>Vehicles</B></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Other<BR>Accounts</B></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Other<BR>Registered<BR>Investment<BR>Companies</B></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Other<BR>Pooled<BR>Investment<BR>Vehicles</B></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Other<BR>Accounts</B></TD></TR>


<TR BGCOLOR="#d8d8d8" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Walter O&#146;Connor, CFA</TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">19<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$27.03&nbsp;Billion</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Kevin Maloney, CFA<SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">35<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$36.40&nbsp;Billion</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD></TR>
<TR BGCOLOR="#d8d8d8" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Phillip Soccio, CFA<SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">34<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$31.65&nbsp;Billion</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Michael&nbsp;A.&nbsp;Kalinoski, CFA<SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">32<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$34.18&nbsp;Billion</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD></TR>
<TR BGCOLOR="#d8d8d8" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Christian Romaglino, CFA</TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">12<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$6.29&nbsp;Billion</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Kristi Manidis<SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">35<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$21.47&nbsp;Billion</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">3<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$1.06&nbsp;Billion</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">0<BR> <P STYLE="margin-bottom:1pt; margin-top:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">$0</P></TD></TR>
</TABLE> <P STYLE="font-size:2pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:8pt" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD ALIGN="left" VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman; " ALIGN="left">Information provided as of February&nbsp;28, 2023. </P></TD></TR></TABLE>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><I>Portfolio Manager Compensation Overview </I></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The discussion
below describes the compensation of Messrs. O&#146;Connor and Romaglino as of July&nbsp;31, 2022, and the compensation of Messrs. Maloney, Soccio and Kalinoski and Ms.&nbsp;Manidis as of February&nbsp;28, 2023. </P>

<p style="margin-top:1em; margin-bottom:0em; page-break-before:always">
<HR SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The Advisor&#146;s financial arrangements with its portfolio managers, its competitive compensation and its
career path emphasis at all levels reflect the value senior management places on key resources. Compensation may include a variety of components and may vary from year to year based on a number of factors. The principal components of compensation
include a base salary, a performance-based discretionary bonus, participation in various benefits programs and one or more of the incentive compensation programs established by the Advisor. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Base Compensation.</B>&nbsp;Generally, portfolio managers receive base compensation based on their position with the firm. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Discretionary Incentive Compensation </B></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Discretionary
incentive compensation is a function of several components: the performance of BlackRock, Inc., the performance of the portfolio manager&#146;s group within BlackRock, the investment performance, including risk-adjusted returns, of the firm&#146;s
assets under management or supervision by that portfolio manager relative to predetermined benchmarks, and the individual&#146;s performance and contribution to the overall performance of these portfolios and BlackRock. In most cases, these
benchmarks are the same as the benchmark or benchmarks against which the performance of the Trust or other accounts managed by the portfolio managers are measured. Among other things, BlackRock&#146;s Chief Investment Officers make a subjective
determination with respect to each portfolio manager&#146;s compensation based on the performance of the Trust and other accounts managed by each portfolio manager relative to the various benchmarks. Performance of fixed income funds is measured on
a <FONT STYLE="white-space:nowrap">pre-tax</FONT> and/or <FONT STYLE="white-space:nowrap">after-tax</FONT> basis over various time periods including <FONT STYLE="white-space:nowrap">1-,</FONT> <FONT STYLE="white-space:nowrap">3-</FONT> and <FONT
STYLE="white-space:nowrap">5-</FONT> year periods, as applicable. With respect to these portfolio managers, such benchmarks for the Trust and other accounts are: </P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" ALIGN="center">


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<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Portfolio Managers</B></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Applicable Benchmarks</B></TD></TR>


<TR BGCOLOR="#d8d8d8" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Walter&nbsp;O&#146;Connor,&nbsp;CFA</P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Kevin Maloney, CFA</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Phillip Soccio, CFA</P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Michael&nbsp;A.&nbsp;Kalinoski,&nbsp;CFA</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Christian Romaglino,
CFA</P> <P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman">Kristi Minidis</P></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">A combination of market-based indices (e.g., Bloomberg Municipal Bond Index), certain customized indices and certain fund industry peer groups.</TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Distribution of Discretionary Incentive Compensation</B>.<B></B>&nbsp;Discretionary incentive compensation is distributed
to portfolio managers in a combination of cash, deferred BlackRock, Inc. stock awards, and/or deferred cash awards that notionally track the return of certain BlackRock investment products. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Portfolio managers receive their annual discretionary incentive compensation in the form of cash. Portfolio managers whose total compensation is above a
specified threshold also receive deferred BlackRock, Inc. stock awards annually as part of their discretionary incentive compensation. Paying a portion of discretionary incentive compensation in the form of deferred BlackRock, Inc. stock puts
compensation earned by a portfolio manager for a given year &#147;at risk&#148; based on BlackRock&#146;s ability to sustain and improve its performance over future periods. In some cases, additional deferred BlackRock, Inc. stock may be granted to
certain key employees as part of a long-term incentive award to aid in retention, align interests with long-term shareholders and motivate performance. Deferred BlackRock, Inc. stock awards are generally granted in the form of BlackRock, Inc.
restricted stock units that vest pursuant to the terms of the applicable plan and, once vested, settle in BlackRock, Inc. common stock. The portfolio managers of this Trust have deferred BlackRock, Inc. stock awards. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">For certain portfolio managers, a portion of the discretionary incentive compensation is also distributed in the form of deferred cash awards that notionally
track the returns of select BlackRock investment products they manage, which provides direct alignment of portfolio manager discretionary incentive compensation with investment product results. Deferred cash awards vest ratably over a number of
years and, once vested, settle in the form of cash. Only portfolio managers who manage specified products and whose total compensation is above a specified threshold are eligible to participate in the deferred cash award program. </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">- 2 - </P>


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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Other Compensation Benefits.</B>&nbsp;In addition to base salary and discretionary incentive compensation,
portfolio managers may be eligible to receive or participate in one or more of the following: </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><I>Incentive Savings Plans&#151;</I>&nbsp;BlackRock, Inc.
has created a variety of incentive savings plans in which BlackRock, Inc. employees are eligible to participate, including a 401(k) plan, the BlackRock Retirement Savings Plan (RSP), and the BlackRock Employee Stock Purchase Plan (ESPP). The
employer contribution components of the RSP include a company match equal to 50% of the first 8% of eligible pay contributed to the plan capped at $5,000 per year, and a company retirement contribution equal to
<FONT STYLE="white-space:nowrap">3-5%</FONT> of eligible compensation up to the Internal Revenue Service limit ($305,000 for 2022). The RSP offers a range of investment options, including registered investment companies and collective investment
funds managed by the firm. BlackRock, Inc. contributions follow the investment direction set by participants for their own contributions or, absent participant investment direction, are invested into a target date fund that corresponds to, or is
closest to, the year in which the participant attains age 65. The ESPP allows for investment in BlackRock, Inc. common stock at a 5% discount on the fair market value of the stock on the purchase date. Annual participation in the ESPP is limited to
the purchase of 1,000 shares of common stock or a dollar value of $25,000 based on its fair market value on the purchase date. All of the eligible portfolio managers are eligible to participate in these plans. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><I>Securities Ownership of Portfolio Managers </I></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">As of
July&nbsp;31, 2022, the end of the Trust&#146;s most recently completed fiscal year end, the dollar range of securities beneficially owned by each portfolio manager in the Trust is shown below: </P>
<P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Portfolio Manager</B></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom" COLSPAN="4" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><B>Dollar&nbsp;Range&nbsp;of&nbsp;Equity&nbsp;Securities&nbsp;of<BR>the Trust Beneficially Owned</B></TD></TR>


<TR BGCOLOR="#d8d8d8" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Walter O&#146;Connor, CFA</TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" COLSPAN="4" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">None</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Kevin Maloney, CFA<SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" COLSPAN="4" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">None</TD></TR>
<TR BGCOLOR="#d8d8d8" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Phillip Soccio, CFA<SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" COLSPAN="4" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">None</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Michael A. Kalinoski, CFA<SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" COLSPAN="4" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT STYLE="white-space:nowrap">$1-$10,000</FONT></TD></TR>
<TR BGCOLOR="#d8d8d8" STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Christian Romaglino, CFA</TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" COLSPAN="4" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">None</TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000">Kristi Manidis<SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD VALIGN="bottom" STYLE=" BORDER-BOTTOM:1px solid #000000">&nbsp;&nbsp;</TD>
<TD VALIGN="top" COLSPAN="4" ALIGN="center" STYLE="BORDER-BOTTOM:1px solid #000000">None</TD></TR>
</TABLE> <P STYLE="font-size:2pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
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<TR style = "page-break-inside:avoid">
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><SUP STYLE="font-size:75%; vertical-align:top">1</SUP></TD>
<TD ALIGN="left" VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman; " ALIGN="left">Information provided as of February&nbsp;28, 2023. </P></TD></TR></TABLE>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><I>Potential Material Conflicts of Interest </I></P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The Advisor
has built a professional working environment, firm-wide compliance culture and compliance procedures and systems designed to protect against potential incentives that may favor one account over another. The Advisor has adopted policies and
procedures that address the allocation of investment opportunities, execution of portfolio transactions, personal trading by employees and other potential conflicts of interest that are designed to ensure that all client accounts are treated
equitably over time. Nevertheless, the Advisor furnishes investment management and advisory services to numerous clients in addition to the Trust, and the Advisor may, consistent with applicable law, make investment recommendations to other clients
or accounts (including accounts which are hedge funds or have performance or higher fees paid to the Advisor, or in which portfolio managers have a personal interest in the receipt of such fees), which may be the same as or different from those made
to the Trust. In addition, BlackRock, Inc., its affiliates and significant shareholders and any officer, director, shareholder or employee may or may not have an interest in the securities whose purchase and sale the Advisor recommends to the Trust.
BlackRock, Inc., or any of its affiliates or significant shareholders, or any officer, director, shareholder, employee or any member of their families may take different actions than those recommended to the Trust by the Advisor with respect to the
same securities. Moreover, the Advisor may refrain from rendering any advice or services concerning securities of companies of which any of BlackRock, Inc.&#146;s (or its affiliates&#146; or significant shareholders&#146;) officers, directors or
employees are directors or officers, or companies </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">- 3 - </P>


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 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">
as to which BlackRock, Inc. or any of its affiliates or significant shareholders or the officers, directors and employees of any of them has any substantial economic interest or possesses
material <FONT STYLE="white-space:nowrap">non-public</FONT> information. Certain portfolio managers also may manage accounts whose investment strategies may at times be opposed to the strategy utilized for a fund. It should also be noted that a
portfolio manager may be managing certain hedge fund and/or long only accounts, or may be part of a team managing certain hedge fund and/or long only accounts, subject to incentive fees. Such portfolio managers may therefore be entitled to receive a
portion of any incentive fees earned on such accounts. Currently, the portfolio managers of the Trust are not entitled to receive a portion of incentive fees of other accounts. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">As a fiduciary, the Advisor owes a duty of loyalty to its clients and must treat each client fairly. When the Advisor purchases or sells securities for more
than one account, the trades must be allocated in a manner consistent with its fiduciary duties. The Advisor attempts to allocate investments in a fair and equitable manner among client accounts, with no account receiving preferential treatment. To
this end, BlackRock, Inc. has adopted policies that are intended to ensure reasonable efficiency in client transactions and provide the Advisor with sufficient flexibility to allocate investments in a manner that is consistent with the particular
investment discipline and client base, as appropriate. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Shareholders should retain this Supplement for future reference. </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">SAI-BFK-0323SUP</FONT></FONT> </P>
 <p STYLE="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&nbsp;</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">- 4 - </P>

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