NUVEEN SELECT TAX FREE INCOME PORTFOLIO

Nuveen Select Tax-Free Income Portfolio is a closed-ended fixed income mutual fund. It was launched by Nuveen Investments Inc. and is co-managed by Nuveen Fund Advisors LLC and Nuveen Asset Management, LLC. The fund invests in the fixed income markets of the United States, specifically focusing on investment-grade municipal securities. These securities are rated Baa and BBB or better. The fund measures its performance against two benchmarks: the Standard & Poor's (S&P) National Municipal Bond Index and the Lipper General and Insured Unleveraged Municipal Debt Funds Average. Nuveen Select Tax-Free Income Portfolio was established on March 19, 1992, and is domiciled in the United States.