| Date | Insider | Shares | Type | Transaction | Value* |
| 22-Dec-09 | SAMUELS DAVID M Officer | 1,000 | Direct | Automatic Sale at $30 per share. | $30,000 |
| 21-Dec-09 | SAMUELS DAVID M Officer | 2,500 | Direct | Automatic Sale at $27.98 per share. | $69,950 |
| 17-Dec-09 | FOUNDATION CAPITAL MANAGEMENT CO IV LLC Beneficial Owner (10% or more) | 97,268 | Indirect | Sale at $28.13 - $28.45 per share. | $2,752,0002 |
| 17-Dec-09 | GROSSER ADAM Director | 97,268 | Indirect | Sale at $28.13 - $28.45 per share. | $2,752,0002 |
| 17-Dec-09 | ELMORE WILLIAM B Beneficial Owner (10% or more) | 97,268 | Indirect | Sale at $28.13 - $28.45 per share. | $2,752,0002 |
| 15-Dec-09 | FOUNDATION CAPITAL MANAGEMENT CO IV LLC Beneficial Owner (10% or more) | 11,500 | Indirect | Sale at $29.28 per share. | $336,720 |
| 15-Dec-09 | GROSSER ADAM Director | 11,500 | Indirect | Sale at $29.28 per share. | $336,720 |
| 15-Dec-09 | ELMORE WILLIAM B Beneficial Owner (10% or more) | 11,500 | Indirect | Sale at $29.28 per share. | $336,720 |
| 14-Dec-09 | FOUNDATION CAPITAL MANAGEMENT CO IV LLC Beneficial Owner (10% or more) | 105,700 | Indirect | Sale at $28.63 per share. | $3,026,191 |
| 14-Dec-09 | GROSSER ADAM Director | 105,700 | Indirect | Sale at $28.63 per share. | $3,026,191 |
| 14-Dec-09 | ELMORE WILLIAM B Beneficial Owner (10% or more) | 105,700 | Indirect | Sale at $28.63 per share. | $3,026,191 |
| 11-Dec-09 | FOUNDATION CAPITAL MANAGEMENT CO IV LLC Beneficial Owner (10% or more) | 107,800 | Indirect | Sale at $27.41 per share. | $2,954,798 |
| 11-Dec-09 | GROSSER ADAM Director | 107,800 | Indirect | Sale at $27.41 per share. | $2,954,798 |
| 11-Dec-09 | ELMORE WILLIAM B Beneficial Owner (10% or more) | 107,800 | Indirect | Sale at $27.41 per share. | $2,954,798 |
| 4-Dec-09 | GLAUTHIER T J Director | 4,000 | Indirect | Sale at $27.20 per share. | $108,800 |
| 30-Nov-09 | BLIGH KEVIN Officer | 7 | Direct | Sale at $27.28 per share. | $190 |
| 24-Nov-09 | BLIGH KEVIN Officer | 24 | Direct | Sale at $25.20 per share. | $604 |
| 18-Nov-09 | HEALY TIMOTHY G Officer | 10,000 | Direct | Automatic Sale at $27.23 - $27.94 per share. | $276,0002 |
| 9-Nov-09 | SAMUELS DAVID M Officer | 24,000 | Direct | Automatic Sale at $30.95 - $31.3 per share. | $747,0002 |
| 9-Nov-09 | COVIELLO ARTHUR W JR Director | 2,000 | Direct | Automatic Sale at $31.86 per share. | $63,720 |
| 6-Nov-09 | BREWSTER DAVID B Officer | 10,000 | Direct | Automatic Sale at $33.20 - $34.69 per share. | $339,0002 |
| 4-Nov-09 | SAMUELS DAVID M Officer | 7,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 4-Nov-09 | BLIGH KEVIN Officer | 2,687 | Direct | Statement of Ownership | N/A |
| 28-Aug-09 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 1,280 | Indirect | Disposition (Non Open Market) at $0 per share. | N/A |
| 28-Aug-09 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 797 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 14-Aug-09 | WELLER TIMOTHY Officer | 20,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 11-Aug-09 | FOUNDATION CAPITAL MANAGEMENT CO IV LLC Beneficial Owner (10% or more) | 625,000 | Indirect | Sale at $25.79 per share. | $16,118,750 |
| 11-Aug-09 | GROSSER ADAM Director | 625,000 | Indirect | Sale at $25.79 per share. | $16,118,750 |
| 11-Aug-09 | ELMORE WILLIAM B Beneficial Owner (10% or more) | 625,000 | Indirect | Sale at $25.79 per share. | $16,118,750 |
| 11-Aug-09 | HEALY TIMOTHY G Officer | 84,026 | Direct | Sale at $25.79 per share. | $2,167,030 |
| 4-Aug-09 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 12,901 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 4-Aug-09 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 90 | Indirect | Sale at $29.88 per share. | $2,689 |
| 4-Aug-09 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 16,083 | Indirect | Disposition (Non Open Market) at $0 per share. | N/A |
| 3-Aug-09 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 15,611 | Indirect | Disposition (Non Open Market) at $0 per share. | N/A |
| 31-Jul-09 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 15,833 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 31-Jul-09 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 205,591 | Indirect | Disposition (Non Open Market) at $0 per share. | N/A |
| 28-Jul-09 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 1,280 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 3-Jun-09 | DIETER RICHARD Director | 4,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 3-Jun-09 | GLAUTHIER T J Director | 4,000 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 3-Jun-09 | TURNER JAMES L Director | 4,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 3-Jun-09 | COVIELLO ARTHUR W JR Director | 4,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 21-May-09 | GLAUTHIER T J Director | 5,000 | Indirect | Sale at $23 per share. | $115,000 |
| 13-Mar-09 | HEALY TIMOTHY G Officer | 135,112 | Indirect | Disposition (Non Open Market) at $0 per share. | N/A |
| 13-Mar-09 | HEALY TIMOTHY G Officer | 2,000 | Direct | Disposition (Non Open Market) at $0 per share. | N/A |
| 23-Feb-09 | SAMUELS DAVID M Officer | 2,000 | Direct | Purchase at $12.20 per share. | $24,400 |
| 20-Feb-09 | ISAACSON NEAL C Officer | 5,000 | Direct | Purchase at $12.33 per share. | $61,650 |
| 12-Feb-09 | HEALY TIMOTHY G Officer | 66,051 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 12-Feb-09 | BREWSTER DAVID B Officer | 44,034 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 12-Feb-09 | DIXON GREGG Officer | 15,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 12-Feb-09 | ISAACSON NEAL C Officer | 9,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 12-Feb-09 | SAMUELS DAVID M Officer | 17,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 12-Feb-09 | BRADY DARREN P Officer | 17,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 5-Feb-09 | ISAACSON NEAL C Officer | 41,533 | Direct | Option Exercise at $0.35 - $0.51 per share. | N/A |
| 13-Jan-09 | DIXON GREGG Officer | 20,607 | Direct | Option Exercise at $0.17 - $0.51 per share. | N/A |
| 12-Jan-09 | DIXON GREGG Officer | 17,368 | Direct | Automatic Purchase at $9.16 per share. | $159,090 |
| 16-Dec-08 | FOUNDATION CAPITAL MANAGEMENT CO. VI, LLC Other | 9,300 | Indirect | Purchase at $7.44 - $7.46 per share. | $69,0002 |
| 16-Dec-08 | FOUNDATION CAPITAL MANAGEMENT CO IV LLC Beneficial Owner (10% or more) | 3,100 | Indirect | Purchase at $7.46 per share. | $23,126 |
| 16-Dec-08 | GROSSER ADAM Director | 12,400 | Indirect | Purchase at $7.46 per share. | $92,504 |
| 16-Dec-08 | ELMORE WILLIAM B Beneficial Owner (10% or more) | 12,400 | Indirect | Purchase at $7.46 per share. | $92,504 |
| 15-Dec-08 | FOUNDATION CAPITAL MANAGEMENT CO. VI, LLC Other | 3,750 | Indirect | Purchase at $7.37 per share. | $27,637 |
| 15-Dec-08 | FOUNDATION CAPITAL MANAGEMENT CO IV LLC Beneficial Owner (10% or more) | 1,250 | Indirect | Purchase at $7.37 per share. | $9,212 |
| 15-Dec-08 | GROSSER ADAM Director | 5,000 | Indirect | Purchase at $7.37 per share. | $36,850 |
| 15-Dec-08 | ELMORE WILLIAM B Beneficial Owner (10% or more) | 5,000 | Indirect | Purchase at $7.37 per share. | $36,850 |
| 12-Dec-08 | FOUNDATION CAPITAL MANAGEMENT CO IV LLC Beneficial Owner (10% or more) | 26,623 | Indirect | Purchase at $7.11 per share. | $189,289 |
| 12-Dec-08 | GROSSER ADAM Director | 26,623 | Indirect | Purchase at $7.11 per share. | $189,289 |
| 12-Dec-08 | FOUNDATION CAPITAL MANAGEMENT CO. VI, LLC Other | 78,986 | Indirect | Statement of Ownership | N/A |
| 12-Dec-08 | HEALY TIMOTHY G Officer | 2,000 | Direct | Acquisition (Non Open Market) at $7.11 per share. | $14,220 |
| 12-Dec-08 | BREWSTER DAVID B Officer | 2,000 | Direct | Acquisition (Non Open Market) at $7.11 per share. | $14,220 |
| 12-Dec-08 | DIXON GREGG Officer | 64,980 | Direct | Disposition (Non Open Market) at $7.11 per share. | $462,007 |
| 12-Dec-08 | ISAACSON NEAL C Officer | 39,000 | Direct | Disposition (Non Open Market) at $7.11 per share. | $277,290 |
| 12-Dec-08 | SAMUELS DAVID M Officer | 6,511 | Direct | Disposition (Non Open Market) at $7.11 per share. | $46,293 |
| 12-Dec-08 | ELMORE WILLIAM B Beneficial Owner (10% or more) | 26,623 | Indirect | Purchase at $7.11 per share. | $189,289 |
| 19-Nov-08 | DIETER RICHARD Director | 15,000 | Direct | Purchase at $6.49 per share. | $97,350 |
| 3-Nov-08 | BREWSTER DAVID B Officer | 54,175 | Direct | Option Exercise at $0.35 - $0.51 per share. | N/A |
| 31-Oct-08 | HEALY TIMOTHY G Officer | 118,560 | Direct | Option Exercise at $0.35 - $0.51 per share. | N/A |
| 15-Oct-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 37,932 | Indirect | Purchase at $7.48 per share. | $283,731 |
| 14-Oct-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 11,068 | Indirect | Purchase at $7.45 per share. | $82,456 |
| 13-Oct-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 18,400 | Indirect | Purchase at $7.47 per share. | $137,448 |
| 9-Oct-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 16,000 | Indirect | Acquisition (Non Open Market) at $7.30 per share. | $116,800 |
| 8-Oct-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 111,122 | Indirect | Purchase at $7.38 per share. | $820,080 |
| 7-Oct-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 79,789 | Indirect | Purchase at $7.32 per share. | $584,055 |
| 6-Oct-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 67,915 | Indirect | Purchase at $7.07 per share. | $480,159 |
| 10-Sep-08 | HEALY TIMOTHY G Officer | 10,000 | Direct | Purchase at $10.87 per share. | $108,699 |
| 9-Sep-08 | BREWSTER DAVID B Officer | 20,000 | Direct | Purchase at $11.14 per share. | $222,800 |
| 19-Aug-08 | DIXON GREGG Officer | 13,000 | Direct | Purchase at $15.19 per share. | $197,470 |
| 15-Aug-08 | BREWSTER DAVID B Officer | 300 | Direct | Purchase at $14.56 per share. | $4,368 |
| 14-Aug-08 | BREWSTER DAVID B Officer | 19,700 | Direct | Purchase at $14.40 per share. | $283,680 |
| 14-Aug-08 | DIXON GREGG Officer | 9,814 | Direct | Option Exercise at $0.17 - $0.51 per share. | N/A |
| 28-Jul-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 1,694 | Indirect | Disposition (Non Open Market) at $0 per share. | N/A |
| 28-Jul-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 95 | Indirect | Sale at $17.51 per share. | $1,663 |
| 28-Jul-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 1,145 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 25-Jul-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 8,943 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 24-Jul-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 369 | Indirect | Sale at $20.20 - $21.01 per share. | $7,6032 |
| 22-Jul-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 4,515 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 22-Jul-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 6,678 | Indirect | Disposition (Non Open Market) at $0 per share. | N/A |
| 16-Jul-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 9,176 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 14-Jul-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 9,176 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 20-Jun-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 9,176 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 3-Jun-08 | ISAACSON NEAL C Officer | 10,380 | Direct | Option Exercise at $0.35 - $0.51 per share. | N/A |
| 20-May-08 | BREWSTER DAVID B Officer | 112,434 | Direct | Option Exercise at $0.35 - $7.54 per share. | N/A |
| 13-May-08 | DIXON GREGG Officer | 4,907 | Direct | Option Exercise at $0.17 - $0.51 per share. | N/A |
| 30-Apr-08 | SAMUELS DAVID M Officer | 1,628 | Direct | Option Exercise at $0.51 per share. | $830 |
| 30-Apr-08 | HEALY TIMOTHY G Officer | 12,500 | Direct | Option Exercise at $0.35 per share. | $4,375 |
| 25-Apr-08 | BREWSTER DAVID B Officer | 15,000 | Direct | Option Exercise at $0.35 per share. | $5,250 |
| 21-Apr-08 | HEALY TIMOTHY G Officer | 13,000 | Direct | Option Exercise at $0.35 per share. | $4,550 |
| 21-Apr-08 | DIXON GREGG Officer | 35,259 | Direct | Option Exercise at $0.51 per share. | $17,982 |
| 18-Apr-08 | BREWSTER DAVID B Officer | 15,000 | Direct | Option Exercise at $0.35 per share. | $5,250 |
| 17-Apr-08 | ISAACSON NEAL C Officer | 15,571 | Direct | Option Exercise at $0.35 - $0.51 per share. | N/A |
| 15-Apr-08 | DIXON GREGG Officer | 15,000 | Direct | Option Exercise at $0.17 - $0.51 per share. | N/A |
| 14-Apr-08 | HEALY TIMOTHY G Officer | 15,000 | Direct | Option Exercise at $0.35 per share. | $5,250 |
| 25-Mar-08 | DRAPER FISHER JURVETSON MANAGEMENT CO. VI, LLC Beneficial Owner (10% or more) | 38 | Direct | Sale at $12.29 per share. | $467 |
| 20-Mar-08 | HEALY TIMOTHY G Officer | 830 | Indirect | Disposition (Non Open Market) at $0 per share. | N/A |
| 20-Mar-08 | HEALY TIMOTHY G Officer | 830 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 12-Mar-08 | DRAPER TIMOTHY C Beneficial Owner (10% or more) | 25,000 | Indirect | Purchase at $10.50 per share. | $262,500 |
| 26-Feb-08 | DIXON GREGG Officer | 8,136 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 25-Feb-08 | HEALY TIMOTHY G Officer | 10,370 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 25-Feb-08 | BREWSTER DAVID B Officer | 8,455 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 20-Feb-08 | HEALY TIMOTHY G Officer | 30,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 20-Feb-08 | BREWSTER DAVID B Officer | 20,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 20-Feb-08 | DIXON GREGG Officer | 10,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 20-Feb-08 | ISAACSON NEAL C Officer | 10,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 20-Feb-08 | SAMUELS DAVID M Officer | 40,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 12-Feb-08 | DIXON GREGG Officer | 8,900 | Direct | Automatic Sale at $31.63 - $32.13 per share. | $284,0002 |
| 22-Jan-08 | BRADY DARREN P Officer | 15,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A |
| 17-Jan-08 | DRAPER FISHER JURVETSON MANAGEMENT CO. VI, LLC Beneficial Owner (10% or more) | 59,864 | Direct | Disposition (Non Open Market) at $0 per share. | N/A |
| 17-Jan-08 | DRAPER FISHER JURVETSON MANAGEMENT CO. VI, LLC Beneficial Owner (10% or more) | 48,139 | Indirect | Acquisition (Non Open Market) at $0 per share. | N/A |
| 8-Jan-08 | SICK TERRENCE E Officer | 40,251 | Direct | Option Exercise at $0.35 - $0.51 per share. | N/A |