CMU Stock, MFS Municipal Income Trust Information

The fund seeks high current income exempt from federal income tax, but may also consider capital appreciation. The fund invests, under normal market conditions, at least 80% of its net assets, including assets attributable to preferred shares and borrowings for investment purposes, in tax-exempt bonds and tax-exempt notes. This policy may not be changed without shareholder approval. Tax-exempt bonds and tax-exempt notes are municipal instruments, the interest of which is exempt from federal income tax. Interest from the funds investments may be subject to the federal alternative minimum tax. MFS (Massachusetts Financial Services Company, the fund's investment adviser) may invest 25% or more of the funds total assets in municipal instruments that finance similar projects, such as those relating to education, healthcare, housing, utilities, water, or sewers.