THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.

ARTICLES OF AMENDMENT

AMENDING THE ARTICLES SUPPLEMENTARY ESTABLISHING

AND FIXING THE RIGHTS AND PREFERENCES OF

VARIABLE RATE MUNI TERM PREFERRED SHARES

This is to certify that

First: The charter of The BlackRock Investment Quality Municipal Trust Inc., a Maryland corporation (the “Corporation”), is amended by these Articles of Amendment, which amend the Articles Supplementary Establishing and Fixing the Rights and Preferences of Variable Rate Muni Term Preferred Shares, dated as of December 15, 2011 (the “Articles Supplementary”).

Second: The charter of the Corporation is hereby amended by deleting the definition of “Liquidity Account Initial Date” in the Articles Supplementary and replacing it with the following:

“‘Liquidity Account Initial Date’ means the date which is six-months prior to the Term Redemption Date.”

Third: The charter of the Corporation is hereby amended by deleting Appendix A to the Articles Supplementary and replacing it with the Appendix A attached hereto.

Fourth: The amendment to the charter of the Corporation as set forth above in these Articles of Amendment has been duly advised by the board of directors of the Corporation and approved by the stockholders of the Corporation as and to the extent required by law and in accordance with the charter of the Corporation.

[Signature Page Follows]

IN WITNESS WHEREOF, The BlackRock Investment Quality Municipal Trust Inc. has caused these Articles of Amendment to be signed as of June 30, 2014 in its name and on its behalf by the person named below who acknowledges that these Articles of Amendment are the act of the Corporation and, to the best of such person’s knowledge, information and belief and under penalties for perjury, all matters and facts contained in these Articles of Amendment are true in all material respects.

THE BLACKROCK INVESTMENT QUALITY MUNICIPAL TRUST INC.
By:	/s/ Robert W. Crothers
	Name: Robert W. Crothers
	Title: Vice President

ATTEST:

/s/ Janey Ahn

Name: Janey Ahn

Title:    Secretary

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Appendix A

ELIGIBLE ASSETS

On the Date of Original Issue and at all times thereafter that the VMTP Preferred Shares are Outstanding:

1. “Eligible Assets” are defined to consist only of assets that conform to the following requirements as of the time of investment:

A. Debt obligations. The following debt obligations which are not in payment default at the time of investment:

i. “Municipal securities,” defined as obligations of a State, the District of Columbia, a U.S. territory, or a political subdivision thereof and including general obligations, limited obligation bonds, revenue bonds, and obligations that satisfy the requirements of section 142(b)(l) of the Internal Revenue Code of 1986 issued by or on behalf of any State, the District of Columbia, any U.S. territory or any political subdivision thereof, including any municipal corporate instrumentality of 1 or more States, or any public agency or authority of any State, the District of Columbia, any U.S. territory or any political subdivision thereof. The purchase of any municipal security will be based upon the Investment Adviser’s assessment of an asset’s relative value in terms of current yield, price, credit quality, and future prospects; and the Investment Adviser will monitor the creditworthiness of the Corporation’s portfolio investments and analyze economic, political and demographic trends affecting the markets for such assets.

ii. Debt obligations of the United States.

iii. Debt obligations issued, insured, or guaranteed by a department or an agency of the U.S. Government, if the obligation, insurance, or guarantee commits the full faith and credit of the United States for the repayment of the obligation.

iv. Debt obligations of the Washington Metropolitan Area Transit Authority guaranteed by the Secretary of Transportation under Section 9 of the National Capital Transportation Act of 1969.

v. Debt obligations of the Federal Home Loan Banks.

vi. Debt obligations, participations or other instruments of or issued by the Federal National Mortgage Association or the Government National Mortgage Association.

vii. Debt obligations which are or ever have been sold by the Federal Home Loan Mortgage Corporation pursuant to sections 305 or 306 of the Federal Home Loan Mortgage Corporation Act.

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viii. Debt obligations of any agency named in 12 U.S.C. § 24(Seventh) as eligible to issue obligations that a national bank may underwrite, deal in, purchase and sell for the bank’s own account, including qualified Canadian government obligations.

ix. Debt obligations of issuers other than those specified in (i) through (viii) above that are rated in one of the three highest rating categories by two or more NRSROs, or by one NRSRO if the security has been rated by only one NRSRO, and which have been determined by the Corporation, based on the Corporation’s internal credit due diligence, to be securities where the issuer has adequate capacity to meet financial commitments under the security for the projected life of the security such that the lack of default on the security such that the risk of default on the security is low, and the full and timely repayment of principal and interest is expected, and that are “marketable”. For these purposes, an obligation is “marketable” if:

• it is registered under the Securities Act;

• it is offered and sold pursuant to Securities and Exchange Commission Rule 144A; 17 CPR 230.144A; or

• it can be sold with reasonable promptness at a price that corresponds reasonably to its fair value.

x. Certificates or other securities evidencing ownership interests in a municipal bond trust structure (generally referred to as a tender option bond structure) that invests in (a) debt obligations of the types described in (i) above or (b) depository receipts reflecting ownership interests in accounts holding debt obligations of the types described in (i) above.

An asset shall not fail to qualify as an Eligible Asset solely by virtue of the fact that:

• it provides for repayment of principal and interest in any form including fixed and floating rate, zero interest, capital appreciation, discount, leases, and payment in kind; or

• it is for long-term or short-term financing purposes.

B. Derivatives

i. Interest rate derivatives; or

ii. Swaps, credit default swaps, futures, forwards, structured notes, options and swaptions related to Eligible Assets or on an index related to Eligible Assets.

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C. Other Assets

i. Shares of other investment companies registered under Section 8 of the Investment Company Act of 1940 (open• or closed-end funds and ETFs) the assets of which consist entirely of Eligible Assets based on the Investment Adviser’s assessment of the assets of each such investment company taking into account the investment company’s most recent publicly available schedule of investments and publicly disclosed investment policies.

ii. Cash.

iii. Repurchase agreements on assets described in A above.

iv. Taxable fixed-income securities issued by an issuer described in Paragraph 1(A) (a “Permitted Issuer”) that are not in default at the time of acquisition, acquired for the purpose of influencing control over such Permitted Issuer or creditor group of municipal bonds of such Permitted Issuer (a) the Corporation already owns and (b) which have deteriorated or are expected shortly to deteriorate, with the expectation that such investment should enable the Corporation to better maximize the value of its existing investment in such issuer, provided that the taxable fixed-income securities of such issuer so acquired do not constitute more than 0.5% of the Corporation’s Managed Assets as of the time of investment.

2. At any time that VMTP Preferred Shares are outstanding, for any investment company the securities of which are held by the Corporation, the Corporation will provide or make available the following information to the Holders within 10 days after the public quarterly release of such information and on the Date of Original Issue (for the reporting period having ended most recently prior to the closing):

i. the identity of the investment company and the CUSIP Number, the number of shares owned, as of the end of the prior quarter, and the percentage of the investment company’s equity represented by the Corporation’s investment, as of the end of the prior quarter;

ii. a representation that each such investment company invests solely in “Eligible Assets,” which representation may be based upon the affirmative representation of the underlying investment company’s investment adviser; and

iii. the information contained in the most recently released financial statements of each such underlying investment company relating to the portfolio holdings of each such investment company.

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