Trustees of Five Pioneer Closed-End Funds announced that Thomas J. Perna has been elected Chairman of the Board of Trustees of the funds, to take effect May 19, 2012. John F. Cogan, Jr., the current Chairman, will continue to serve as President and a Trustee of the funds. The five funds include Pioneer Diversified High Income Trust, Pioneer Floating Rate Trust, Pioneer High Income Trust, Pioneer Municipal High Income Advantage Trust, and Pioneer Municipal High Income Trust. Mr. Perna currently serves as Chairman of the Board of Directors of Quadriserv Inc., and as a Director of Broadridge Financial Solutions Inc.