X0306 4 2014-02-19 1 0001367920 CONCERT PHARMACEUTICALS, INC. CNCE 0001290166 QVT Associates GP LLC 1177 AVENUE OF THE AMERICAS, 9TH FLOOR NEW YORK NY 10036 0 0 1 0 0001543904 QVT Fund V LP 1177 AVENUE OF THE AMERICAS, 9TH FLOOR NEW YORK NY 10036 0 0 1 0 Common Stock, $0.001 par value 2014-02-19 4 C 0 259999 A 259999 I Through QVT Fund IV LP, QVT Fund V LP and Quintessence Fund L.P. Common Stock, $0.001 par value 2014-02-19 4 P 0 300000 14.00 A 559999 I Through QVT Fund IV LP, QVT Fund V LP and Quintessence Fund L.P. Series A Convertible Preferred Stock 2014-02-19 4 C 0 250000 0.00 D Common Stock 44247 0 I Through QVT Fund IV LP, QVT Fund V LP and Quintessence Fund L.P. Series B Convertible Preferred Stock 2014-02-19 4 C 0 1000000 0.00 D Common Stock 176991 0 I Through QVT Fund IV LP, QVT Fund V LP and Quintessence Fund L.P. Series C Convertible Preferred Stock 2014-02-19 4 C 0 219000 0.00 D Common Stock 38761 0 I Through QVT Fund IV LP, QVT Fund V LP and Quintessence Fund L.P. The Series A, Series B and Series C convertible preferred stock converted into Common Stock on a 1-for-5.65 basis upon the closing of the issuer's initial public offering without payment of consideration. QVT Associates GP LLC is the general partner of QVT Fund IV LP, QVT Fund V LP and Quintessence Fund L.P. (together with QVT Fund IV LP, and QVT Fund V LP, the "Funds"). QVT Financial LP is the investment manager for the Funds and therefore may be deemed the beneficial owner of the Common Stock held by the Funds. QVT Financial GP LLC is the general partner of QVT Financial LP and therefore may be deemed the beneficial owner of Common Stock beneficially owned by QVT Financial LP. The reporting person disclaims beneficial ownership of the reported securities except to the extent of its pecuniary interest therein. Not applicable. These 300,000 shares were purchased by the Funds in the Issuer's initial public offering, at which time the reporting persons were no longer 10% owners or otherwise subject to Section 16. /s/ Tracy Fu, Managing Member 2014-02-21