AMENDMENT NO. 4
                             TO AMENDED AND RESTATED
                      AGREEMENT AND DECLARATION OF TRUST OF
                          SHORT-TERM INVESTMENTS TRUST

          This Amendment No. 4 (the "Amendment") to the Amended and Restated
Agreement and Declaration of Trust of Short-Term Investments Trust (the "Trust")
amends, effective December 13, 2007, the Amended and Restated Agreement and
Declaration of Trust of the Trust dated as of September 14, 2005, as amended
(the "Agreement").

          Under Section 9.7 of the Agreement, this Amendment may be executed by
a duly authorized officer of the Trust.

          WHEREAS, the Trust desires to abolish Sweep Class;

          NOW, THEREFORE, the Agreement is hereby amended as follows:

     1. Schedule A of the Agreement is hereby amended and restated to read in
its entirety as set forth on Exhibit 1 to this Amendment.

     2. All references in the Agreement to "this Agreement" shall mean the
Agreement as amended by this Amendment.

     3. Except as specifically amended by this Amendment, the Agreement is
hereby confirmed and remains in full force and effect.

     IN WITNESS WHEREOF, the undersigned, a duly authorized officer of the
Trust, has executed this Amendment as of December 13, 2007.

                                    By: /s/ Karen Dunn Kelley
                                        ----------------------------------------
                                    Name: Karen Dunn Kelley
                                    Title: President



                                                                       EXHIBIT 1

                                   "SCHEDULE A

                          SHORT-TERM INVESTMENTS TRUST
                         PORTFOLIOS AND CLASSES THEREOF



PORTFOLIO                           CLASSES OF EACH PORTFOLIO
---------------------------------   -------------------------
                                 
Government & Agency Portfolio       Cash Management Class
                                    Corporate Class
                                    Institutional Class
                                    Personal Investment Class
                                    Private Investment Class
                                    Reserve Class
                                    Resource Class

Government TaxAdvantage Portfolio   Cash Management Class
                                    Corporate Class
                                    Institutional Class
                                    Personal Investment Class
                                    Private Investment Class
                                    Reserve Class
                                    Resource Class

Liquid Assets Portfolio             Cash Management Class
                                    Corporate Class
                                    Institutional Class
                                    Personal Investment Class
                                    Private Investment Class
                                    Reserve Class
                                    Resource Class

STIC Prime Portfolio                Cash Management Class
                                    Corporate Class
                                    Institutional Class
                                    Personal Investment Class
                                    Private Investment Class
                                    Reserve Class
                                    Resource Class

Treasury Portfolio                  Cash Management Class
                                    Corporate Class
                                    Institutional Class
                                    Personal Investment Class
                                    Private Investment Class
                                    Reserve Class
                                    Resource Class"