X0202 4 2005-12-16 0 0001333513 DealerTrack Holdings, Inc. TRAK 0001106535 JP MORGAN PARTNERS 23A SBIC LP C/O J.P. MORGAN PARTNERS, LLC 1221 AVENUE OF THE AMERICAS 39TH FLOOR NEW YORK NY 10020 0 0 1 0 0001243237 J P MORGAN PARTNERS 23A SBIC MANAGER INC C/O JPMORGAN PARTNERS 1221 AVENUE OF THE AMERICAS 40TH FL. NEW YORK NY 10021 0 0 1 0 Common Stock 2005-12-16 4 C 0 3264200 A 3264200 D Common Stock 2005-12-16 4 C 0 2040125 A 5304325 D Common Stock 2005-12-16 4 C 0 979919 A 6284244 D Common Stock 2005-12-16 4 C 0 938669 A 7222913 D Common Stock 2005-12-16 4 S 0 1610092 15.81 D 5612821 D Convertible Series A Preferred Stock 1.6321 2005-12-16 4 C 0 2000000 0 D Common Stock 3264200 0 D Convertible Series B Preferred Stock 1.6321 2005-12-16 4 C 0 1250000 0 D Common Stock 2040125 0 D Convertible Series B-1 Preferred Stock 1.5688 2005-12-16 4 C 0 624630 0 D Common Stock 979919 0 D Convertible Series C Preferred Stock 1.1706 2005-12-16 4 C 0 801870 0 D Common Stock 938669 0 D Upon the close of the initial public offering of the Issuer, on December 16, 2005, these shares of Convertible Series A, B, B-1 and C Preferred Stock were automatically converted into Common Stock at the conversion rates listed in Table II above. J.P. Morgan Partners (23A SBIC), L.P. J.P. Morgan Partners (23A SBIC) Manager, Inc., Its General Manager By: /s/ Jeffrey C. Walker, President 2005-12-20