X0303 4 2010-11-24 0 0001023313 FORRESTER RESEARCH INC FORR 0001290242 Broeders Henk C/O FORRESTER RESEARCH 400 TECHNOLOGY SQUARE CAMBRIDGE MA 02139 1 0 0 0 Common Stock 2010-11-24 4 M 0 12500 26.30 A 12500 D Common Stock 2010-11-24 4 S 0 7415 35.30 D 5085 D Common Stock 2010-11-24 4 S 0 2745 35.3147 D 2340 D Common Stock 2010-11-24 4 S 0 840 35.3036 D 1500 D Common Stock 2010-11-24 4 S 0 379 35.2785 D 1121 D Common Stock 2010-11-24 4 S 0 1121 35.2096 D 0 D Common Stock 2010-11-24 4 M 0 12500 18.75 A 12500 D Common Stock 2010-11-24 4 S 0 12500 35.2096 D 0 D Common Stock 2010-11-24 4 M 0 12500 15.67 A 12500 D Common Stock 2010-11-24 4 S 0 1702 35.2096 D 10798 D Common Stock 2010-11-26 4 S 0 999 35.0605 D 9799 D Common Stock 2010-11-26 4 S 0 9799 35.0454 D 0 D Common Stock 2010-11-26 4 M 0 12500 17.60 A 12500 D Common Stock 2010-11-26 4 S 0 11035 35.0454 D 1465 D Common Stock 2010-11-26 4 S 0 1000 34.95 D 465 D Common Stock 2010-11-26 4 S 0 465 34.90 D 0 D Non Qualified Stock Option (Right to Buy) 26.30 2010-11-24 4 M 0 12500 0.00 D 2005-05-08 2011-05-07 common stock 12500 0 D Non Qualified Stock Option (Right to Buy) 18.75 2010-11-24 4 M 0 12500 0.00 D 2006-05-14 2012-05-13 common stock 12500 0 D Non Qualified Stock Option (Right to Buy) 15.67 2010-11-24 4 M 0 12500 0.00 D 2007-05-13 2013-05-12 common stock 12500 0 D Non Qualified Stock Option (Right to Buy) 17.60 2010-11-26 4 M 0 12500 0.00 D 2008-05-11 2014-05-10 common stock 12500 0 D Ryan Darrah, attorney-in-fact for Henk Broeders 2010-11-24