X0305 4 2012-04-17 0 0001157377 ADVISORY BOARD CO ABCO 0001353721 Kirshbaum Michael T 2445 M STREET, NW WASHINGTON DC 20037 0 1 0 0 Chief Financial Officer Common Stock Options 87.66 2012-04-17 4 A 0 4306 0.00 A 2017-04-17 Common stock 4306 4306 D Common Stock Options 87.66 2012-04-17 4 A 0 4306 0.00 A 2019-04-17 Common stock 4306 4306 D Restricted Stock Units 2012-04-17 4 A 0 4064 0.00 A 2017-04-17 Common stock 4064 4064 D The options to purchase the Company's common stock become exercisable in two equal annual installments beginning on April 17, 2013. The options to purchase the Company's common stock become exercisable in two equal annual installments beginning on April 17, 2015. Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the Company's common stock. The RSUs vest in four equal installments on May 17, 2013; April 17, 2014; April 17, 2015; and April 17, 2016, unless deferred. Upon vesting, each RSU is settled by the delivery of the underlying shares of common stock or payment of the current cash value of the vested shares, at the discretion of the Company. /s/ Michael T. Kirshbaum by Seth A. Allyn by Power of Attorney 2012-04-19