MFS Investment Grade Municipal Trust (NYSE: CXH) is a closed-end management investment company that seeks high current income exempt from federal income tax; it may also consider capital appreciation. The Trust, managed by Massachusetts Financial Services Company (MFS), invests primarily in investment-grade municipal securities, including tax-exempt bonds and notes issued by states, municipalities, and public authorities across the United States; its portfolio comprises general obligation bonds, revenue bonds, and notes spanning sectors such as transportation, utilities, education, healthcare, water and sewer, and economic development, with at least 80% of net assets (including leverage) allocated to such instruments under normal market conditions. The actively managed portfolio, which as of November 2025 holds approximately 397 issues from 289 issuers with an average coupon of around 5.05%, average effective duration of 15 years, and average effective maturity of 21 years, employs leverage through variable rate municipal term preferred shares to enhance returns; shares trade on the New York Stock Exchange, often at a discount to net asset value. Founded on May 16, 1989, and domiciled in the United States with MFS headquartered in Boston, Massachusetts, the Trust targets retail and institutional investors seeking tax-efficient fixed-income exposure. Recent developments include a tender offer announced in April 2025 for up to 10% of outstanding common shares approved by the Board of Trustees; an amendment to its shareholder agreement in July 2025; a notice of the 2025 annual meeting of shareholders in August 2025; and capital gain estimates issued in November 2025, alongside consistent monthly dividend payments averaging approximately $0.03 per share with a distribution rate of about 5% at market price.