BlackRock MuniAssets Fund, Inc. (the Fund) is a non-diversified, closed-end management investment company. The Fund's investment objective is to provide high current income exempt from federal income taxes by investing primarily in a portfolio of medium- to lower-grade or unrated municipal obligations, the interest on which, in the opinion of bond counsel to the issuer, is exempt from federal income taxes. The Fund seeks to achieve its investment objective by investing, under normal market conditions, at least 80% of its assets in municipal bonds exempt from federal income taxes (except that the interest may be subject to the federal alternative minimum tax). The Fund invests at least 65% of its assets in municipal. The Fund may invest directly in such securities or synthetically through the use of derivatives. The Fund's investment advisor is BlackRock Advisors, LLC. The Fund's sub-advisor is BlackRock Investment Management, LLC.