| Date | Insider | Shares | Transaction | Value* |
| 11-Jan-10 | NELSON TIMOTHY S Officer | 20,000 | Option Exercise at $0.64 per share. | $12,800 |
| 11-Jan-10 | NELSON TIMOTHY S Officer | 20,000 | Automatic Sale at $12.17 per share. | $243,400 |
| 4-Jan-10 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Option Exercise at $0.74 per share. | $3,330 |
| 4-Jan-10 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Automatic Sale at $9.92 per share. | $44,640 |
| 14-Dec-09 | ARMER THOMAS A Officer | 10,000 | Option Exercise at $3.36 per share. | $33,600 |
| 14-Dec-09 | ARMER THOMAS A Officer | 10,000 | Sale at $9.54 per share. | $95,399 |
| 1-Dec-09 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Option Exercise at $0.74 per share. | $3,330 |
| 1-Dec-09 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Automatic Sale at $9.11 per share. | $40,995 |
| 18-Nov-09 | HENWOOD GERALDINE Director | 16,250 | Option Exercise at $0.64 per share. | $10,400 |
| 18-Nov-09 | HENWOOD GERALDINE Director | 16,250 | Sale at $8.77 per share. | $142,512 |
| 2-Nov-09 | CHAI CHRISTOPHER Y Officer | 10,000 | Option Exercise at $0.74 per share. | $7,400 |
| 2-Nov-09 | CHAI CHRISTOPHER Y Officer | 10,000 | Automatic Sale at $8.07 per share. | $80,700 |
| 2-Nov-09 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Option Exercise at $0.74 per share. | $3,330 |
| 2-Nov-09 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Automatic Sale at $8.06 per share. | $36,270 |
| 1-Oct-09 | CHAI CHRISTOPHER Y Officer | 10,000 | Option Exercise at $0.74 per share. | $7,400 |
| 1-Oct-09 | CHAI CHRISTOPHER Y Officer | 10,000 | Automatic Sale at $10.26 per share. | $102,600 |
| 1-Oct-09 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Option Exercise at $0.74 per share. | $3,330 |
| 1-Oct-09 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Automatic Sale at $10.20 per share. | $45,900 |
| 8-Sep-09 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Option Exercise at $0.74 per share. | $3,330 |
| 8-Sep-09 | GIANAKAKOS ANASTASIOS Officer | 4,500 | Automatic Sale at $10.03 per share. | $45,135 |
| 15-Jul-09 | FIRSTMARK CAPITAL, L.L.C. Other | 960 | Sale at $10.50 per share. | $10,080 |
| 14-Jul-09 | FIRSTMARK CAPITAL, L.L.C. Other | 8,740 | Sale at $10.50 - $10.72 per share. | $93,0002 |
| 10-Jul-09 | GIANAKAKOS ANASTASIOS Officer | 25,000 | Option Exercise at $0.74 per share. | $18,500 |
| 10-Jul-09 | GIANAKAKOS ANASTASIOS Officer | 25,000 | Automatic Sale at $10.16 per share. | $254,000 |
| 2-Jul-09 | FIRSTMARK CAPITAL, L.L.C. Other | 2,400 | Sale at $12 - $12.01 per share. | $29,0002 |
| 1-Jul-09 | FIRSTMARK CAPITAL, L.L.C. Other | 45,000 | Sale at $12 - $12.34 per share. | $548,0002 |
| 26-Jun-09 | FIRSTMARK CAPITAL, L.L.C. Other | 43,577 | Sale at $11.28 - $11.42 per share. | $495,0002 |
| 26-Jun-09 | FIRSTMARK CAPITAL, L.L.C. Other | 88,523 | Sale at $11 - $11.28 per share. | $986,0002 |
| 24-Jun-09 | FIRSTMARK CAPITAL, L.L.C. Other | 2,900 | Sale at $11 - $11.04 per share. | $32,0002 |
| 23-Jun-09 | FIRSTMARK CAPITAL, L.L.C. Other | 2,608 | Sale at $11.27 - $11.64 per share. | $30,0002 |
| 23-Jun-09 | FIRSTMARK CAPITAL, L.L.C. Other | 73,476 | Sale at $11 - $11.26 per share. | $818,0002 |
| 19-Jun-09 | FIRSTMARK CAPITAL, L.L.C. Other | 1,403 | Sale at $11.50 per share. | $16,134 |
| 19-Jun-09 | FIRSTMARK CAPITAL, L.L.C. Other | 37,018 | Sale at $11 - $11.44 per share. | $415,0002 |
| 19-Jun-09 | FIRSTMARK CAPITAL, L.L.C. Other | 495 | Purchase at $11.32 per share. | $5,603 |
| 28-May-09 | FIRSTMARK CAPITAL, L.L.C. Other | 46,452 | Sale at $13.07 - $13.15 per share. | $609,0002 |
| 28-May-09 | FIRSTMARK CAPITAL, L.L.C. Other | 82,163 | Sale at $13 - $13.06 per share. | $1,071,0002 |
| 28-May-09 | FIRSTMARK CAPITAL, L.L.C. Other | 63,148 | Sale at $13.16 - $13.25 per share. | $834,0002 |
| 28-May-09 | FIRSTMARK CAPITAL, L.L.C. Other | 46,787 | Sale at $13.25 - $13.43 per share. | $624,0002 |
| 28-May-09 | FIRSTMARK CAPITAL, L.L.C. Other | 11,450 | Sale at $13.43 - $13.6 per share. | $155,0002 |
| 27-May-09 | FIRSTMARK CAPITAL, L.L.C. Other | 5,000 | Sale at $12 per share. | $60,000 |
| 27-May-09 | ARMER THOMAS A Officer | 60,000 | Option Exercise at $0.74 per share. | $44,400 |
| 27-May-09 | ARMER THOMAS A Officer | 60,000 | Automatic Sale at $10.01 per share. | $600,600 |
| 26-May-09 | ARMER THOMAS A Officer | 40,000 | Automatic Sale at $9 per share. | $360,000 |
| 5-Mar-09 | NELSON TIMOTHY S Officer | 10,000 | Purchase at $2.17 per share. | $21,700 |
| 9-Feb-09 | CHAI CHRISTOPHER Y Officer | 21 | Option Exercise at $0.74 per share. | $15 |
| 9-Feb-09 | CHAI CHRISTOPHER Y Officer | 21 | Automatic Sale at $13 per share. | $273 |
| 4-Feb-09 | GIANAKAKOS ANASTASIOS Officer | 15,000 | Option Exercise at $0.74 per share. | $11,100 |
| 4-Feb-09 | GIANAKAKOS ANASTASIOS Officer | 15,000 | Automatic Sale at $12 - $12.06 per share. | $180,0002 |
| 20-Aug-08 | FIRSTMARK CAPITAL, L.L.C. Other | 2,586,522 | Statement of Ownership | N/A |
| 7-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 600 | Option Exercise at $0.74 per share. | $444 |
| 7-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 600 | Automatic Sale at $10 - $10.05 per share. | $6,0152 |
| 3-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 800 | Option Exercise at $0.74 per share. | $592 |
| 3-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 800 | Automatic Sale at $10.02 - $10.73 per share. | $8,3002 |
| 2-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 2,200 | Option Exercise at $0.74 per share. | $1,628 |
| 2-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 2,200 | Option Exercise at $0.74 per share. | $1,628 |
| 2-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 2,200 | Automatic Sale at $10 - $10.48 per share. | $23,0002 |
| 2-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 2,200 | Automatic Sale at $10 - $10.48 per share. | $23,0002 |
| 1-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 3,900 | Option Exercise at $0.74 per share. | $2,886 |
| 1-Jul-08 | GIANAKAKOS ANASTASIOS Officer | 3,900 | Automatic Sale at $10 - $10.61 per share. | $40,0002 |
| 4-Jun-08 | GIANAKAKOS ANASTASIOS Officer | 3,500 | Option Exercise at $0.74 per share. | $2,590 |
| 4-Jun-08 | GIANAKAKOS ANASTASIOS Officer | 3,500 | Automatic Sale at $11.81 - $13.25 per share. | $44,0002 |
| 3-Jun-08 | GIANAKAKOS ANASTASIOS Officer | 2,500 | Option Exercise at $0.74 per share. | $1,850 |
| 3-Jun-08 | GIANAKAKOS ANASTASIOS Officer | 2,500 | Automatic Sale at $11.76 - $12.2 per share. | $30,0002 |
| 2-Jun-08 | GIANAKAKOS ANASTASIOS Officer | 4,000 | Option Exercise at $0.74 per share. | $2,960 |
| 2-Jun-08 | GIANAKAKOS ANASTASIOS Officer | 4,000 | Automatic Sale at $11.83 - $13.28 per share. | $50,0002 |
| 19-May-08 | GIANAKAKOS ANASTASIOS Officer | 1,700 | Option Exercise at $0.74 per share. | $1,258 |
| 19-May-08 | GIANAKAKOS ANASTASIOS Officer | 1,700 | Automatic Sale at $10.86 - $11.18 per share. | $19,0002 |
| 16-May-08 | GIANAKAKOS ANASTASIOS Officer | 5,300 | Option Exercise at $0.74 per share. | $3,922 |
| 16-May-08 | GIANAKAKOS ANASTASIOS Officer | 5,300 | Automatic Sale at $11.11 - $12.34 per share. | $62,0002 |
| 15-May-08 | GIANAKAKOS ANASTASIOS Officer | 8,000 | Option Exercise at $0.74 per share. | $5,920 |
| 15-May-08 | GIANAKAKOS ANASTASIOS Officer | 600 | Automatic Sale at $12.09 per share. | $7,254 |
| 15-May-08 | GIANAKAKOS ANASTASIOS Officer | 7,400 | Automatic Sale at $11.36 - $13 per share. | $90,0002 |