X0204 3 2011-10-03 0 0001023313 FORRESTER RESEARCH INC FORR 0001530736 Peltzman Steven P. C/O FORRESTER RESEARCH, INC. 60 ACORN PARK DRIVE CAMBRIDGE MA 02140 0 1 0 0 CBTO No Securities Held 0 D Maite Garcia, attorney-in-fact for Steven P. Peltzman 2011-10-05