X0306 4 2018-08-01 0 0001023313 FORRESTER RESEARCH, INC. FORR 0001711669 Hippler Kelley C/O FORRESTER RESEARCH, INC. 60 ACORN PARK DRIVE CAMBRIDGE MA 02140 0 1 0 0 Chief Sales Officer Common Stock 2018-08-01 4 F 0 619 46.95 D 12266 D Common Stock 2018-08-01 4 A 0 7987 0.00 A 20253 D Represents shares withheld by the Issuer to satisfy tax withholding obligations upon the vesting on August 1, 2018 of the restricted stock units awarded to the reporting person on August 1, 2017. The award includes a provision for the withholding of shares by the Issuer to satisfy withholding taxes due as a result of the vesting of the award. The securities awarded on August 1, 2018 are in the form of Restricted Stock Units issued pursuant to the Forrester Research, Inc. Amended and Restated Equity Incentive Plan that entitle the reporting person, upon vesting, to receive one share of common stock per Restricted Stock Unit. The Restricted Stock Units will vest and convert into common stock in four equal installments on the first, second, third and fourth anniversaries of the grant date. Maite Garcia, attorney-in-fact for Kelley Hippler 2016-08-03