At a meeting on December 6-8, 2016, John Hancock Income Securities Trust Board of Trustees appointed Hassell H. McClellan to serve as the Board's Chair, effective January 1, 2017, succeeding James M. Oates, who will continue to serve as a Trustee. In addition, Fund's Board approved the following changes to the Fund's operating committees stated below, effective January 1, 2017: Compliance Committee: Grace K. Fey joins Compliance Committee as Chair, succeeding McClellan, who is no longer a member of Compliance Committee. William H. Cunningham and Deborah C. Jackson continue to serve as members of Compliance Committee. Contracts, Legal & Risk Committee: Oates joins this Committee and Fey is no longer a member of Contracts, Legal & Risk Committee. Steven R. Pruchansky and Gregory A. Russo (Chair) continue to serve as members of Contracts, Legal & Risk Committee. Investment Committee: Oates joins an Investment Sub-Committee as Chair, succeeding Fey in her role as Chair. Jackson, Charles L. Bardelis, Cunningham, and Theron S. Hoffman continue to serve as Chairpersons of the other Investment Sub-Committees.