BIE Blackrock Municipal Bond Investment Trust

BlackRock Advisors, LLC today announced the declaration of a special distribution for BlackRock Municipal Bond Investment Trust (NYSE:BIE) and BlackRock Municipal Income Investment Trust (NYSE:BBF) (collectively, the “Funds”) in connection with the reorganization of BIE into BBF, with BBF continuing (the “Combined Fund”) as the surviving Fund (the “Reorganization”).

With respect to each of the Funds, the special distribution declared today represents undistributed net investment income earned through the effective date of the Reorganization. In order to maintain its status as a regulated investment company and to avoid the imposition of a corporate level income tax, BIE is required to declare a distribution of all of its net investment income prior to the consummation of the Reorganization as described below. Other than the special distribution announced today, BIE will declare no further distributions prior to or following the Reorganization. As this special distribution includes all net investment income earned by each Fund in earlier periods and not previously distributed, it is not indicative of the amount of the Combined Fund’s future monthly distributions.

BIE is declaring a special distribution that will be payable on June 1, 2016. The ex-dividend date for the distribution is May 11, 2016, and the record date is May 13, 2016. Accordingly, persons who are holders of record of BIE common shares on May 13, 2016 should expect to receive the distribution. The distribution payable to shareholders of BIE will be paid in cash. Common shares of BIE acquired after May 10, 2016 will not be entitled to the distribution.

BBF is declaring a special distribution that will be payable on June 1, 2016. The ex-dividend date for the distribution is May 11, 2016, and the record date is May 13, 2016. Accordingly, persons who are holders of record of BBF common shares on May 13, 2016 should expect to receive the distribution. Common shares of BBF acquired after May 10, 2016 will not be entitled to the distribution.

Common shares of BIE or BBF acquired after May 10, 2016 will not be entitled to the distributions and will not be eligible to receive a distribution until an initial distribution is declared on the Combined Fund after the closing of the Reorganization. We expect that on June 1, 2016 the Combined Fund will declare its first monthly distribution payable on July 1, 2016.

It is currently expected that the Reorganization will be completed by the open of business on the New York Stock Exchange on May 16, 2016, subject to all regulatory requirements and customary closing conditions being satisfied. The Reorganization, if completed, would occur based on the relative net asset values of the common shares of BIE and BBF. In addition, BIE preferred shareholders will receive on a one-for-one basis BBF preferred shares in an amount equal to the aggregate preferred share liquidation preference held by BIE preferred shareholders immediately prior to the Reorganization.

Distribution details are as follows:

Declaration- 5/2/2016     Ex-Date- 5/11/2016     Record- 5/13/2016     Payable- 6/1/2016

          Fund Ticker Per-Share Distribution BlackRock Municipal Bond Investment Trust BIE $0.220000 BlackRock Municipal Income Investment Trust BBF $0.072600  

This communication is not intended to, and shall not, constitute an offer to purchase or sell shares of any of the BlackRock funds, including BBF, the surviving fund in the Reorganization.

About BlackRock

BlackRock is a global leader in investment management, risk management and advisory services for institutional and retail clients. At March 31, 2016, BlackRock’s AUM was $4.737 trillion. BlackRock helps clients around the world meet their goals and overcome challenges with a range of products that include separate accounts, mutual funds, iShares® (exchange-traded funds), and other pooled investment vehicles. BlackRock also offers risk management, advisory and enterprise investment system services to a broad base of institutional investors through BlackRock Solutions®. As of March 31, 2016, the firm had approximately 13,000 employees in more than 30 countries and a major presence in global markets, including North and South America, Europe, Asia, Australia and the Middle East and Africa. For additional information, please visit the Company’s website at www.blackrock.com | Twitter: @blackrock_news | Blog: www.blackrockblog.com | LinkedIn: www.linkedin.com/company/blackrock

Availability of Fund Updates

BlackRock will update performance and certain other data for the Funds on a monthly basis on its website in the “Closed-end Funds” section of www.blackrock.com as well as certain other material information as necessary from time to time. Investors and others are advised to check the website for updated performance information and the release of other material information about the Funds. This reference to BlackRock’s website is intended to allow investors public access to information regarding the Funds and does not, and is not intended to, incorporate BlackRock’s website in this release.

Forward-Looking Statements

This press release, and other statements that BlackRock or a Fund may make, may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act, with respect to a Fund’s or BlackRock’s future financial or business performance, strategies or expectations. Forward-looking statements are typically identified by words or phrases such as “trend,” “potential,” “opportunity,” “pipeline,” “believe,” “comfortable,” “expect,” “anticipate,” “current,” “intention,” “estimate,” “position,” “assume,” “outlook,” “continue,” “remain,” “maintain,” “sustain,” “seek,” “achieve,” and similar expressions, or future or conditional verbs such as “will,” “would,” “should,” “could,” “may” or similar expressions.

BlackRock cautions that forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made, and BlackRock assumes no duty to and does not undertake to update forward-looking statements. Actual results could differ materially from those anticipated in forward-looking statements and future results could differ materially from historical performance.

With respect to the Funds, the following factors, among others, could cause actual events to differ materially from forward-looking statements or historical performance: (1) changes and volatility in political, economic or industry conditions, the interest rate environment, foreign exchange rates or financial and capital markets, which could result in changes in demand for the Funds or in a Fund’s net asset value; (2) the relative and absolute investment performance of a Fund and its investments; (3) the impact of increased competition; (4) the unfavorable resolution of any legal proceedings; (5) the extent and timing of any distributions or share repurchases; (6) the impact, extent and timing of technological changes; (7) the impact of legislative and regulatory actions and reforms, including the Dodd-Frank Wall Street Reform and Consumer Protection Act, and regulatory, supervisory or enforcement actions of government agencies relating to a Fund or BlackRock, as applicable; (8) terrorist activities, international hostilities and natural disasters, which may adversely affect the general economy, domestic and local financial and capital markets, specific industries or BlackRock; (9) BlackRock’s ability to attract and retain highly talented professionals; (10) the impact of BlackRock electing to provide support to its products from time to time; and (11) the impact of problems at other financial institutions or the failure or negative performance of products at other financial institutions.

Annual and Semi-Annual Reports and other regulatory filings of the Funds with the Securities and Exchange Commission (“SEC”) are accessible on the SEC's website at www.sec.gov and on BlackRock’s website at www.blackrock.com, and may discuss these or other factors that affect the Funds. The information contained on BlackRock’s website is not a part of this press release.

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