Fort Dearborn Income Securities, Inc. (the Fund) is a diversified closed-end management investment company. The Fund invests principally in investment grade long-term fixed income debt securities. The Fund's primary objective is to provide shareholders with a stable stream of current income consistent with external interest rate conditions and provide a total return over time that is above what they could receive by investing individually in the investment grade and long-term maturity sectors of the bond market. UBS Global Asset Management (Americas) Inc. is the investment advisor of the Fund. The Fund invests in mortgage-backed securities (MBS), representing interests in pools of mortgage loans. The Fund invests in collateralized mortgage obligations (CMOs). A CMO is a bond, which is collateralized by a pool of MBS. The Fund may also invest in real estate mortgage investment conduit (REMICs), which are simply another form of CMO.