| INSIDER TRANSACTIONS REPORTED - LAST TWO YEARS |
| Date | Insider | Shares | Type | Transaction | Value* | | 15-Oct-09 | ALLISON ELISABETH Director | 3,077 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 15-Oct-09 | MELAS KYRIAZI THEO Director | 3,787 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 24-Sep-09 | LOWY RONALD A Officer | 783,696 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 18-Sep-09 | VERSANT VENTURE CAPITAL II, LP Beneficial Owner (10% or more) | 242,931 | Indirect | Purchase at $2.57 per share. | $624,332 | | 18-Sep-09 | ATWOOD BRIAN G Director | 242,931 | Indirect | Purchase at $2.57 per share. | $624,332 | | 18-Sep-09 | COLELLA SAMUEL D Beneficial Owner (10% or more) | 242,931 | Indirect | Purchase at $2.57 per share. | $624,332 | | 18-Sep-09 | FLAGSHIP VENTURES FUND 2004 L P Director | 242,931 | Indirect | Purchase | N/A | | 18-Sep-09 | AFEYAN NOUBAR Director | 242,931 | Indirect | Purchase | N/A | | 18-Sep-09 | LOWY RONALD A Officer | 58,304 | Direct | Purchase | N/A | | 18-Sep-09 | HEF VI, LIMITED PARTNERSHIP Director | 7,531 | Indirect | Purchase | N/A | | 18-Sep-09 | HIGGINS ROBERT F Director | 242,931 | Indirect | Purchase | N/A | | 18-Sep-09 | HIGHLAND MANAGEMENT PARTNERS VI L P Director | 235,400 | Indirect | Purchase | N/A | | 18-Sep-09 | BARRETT PETER Director | 242,931 | Indirect | Purchase | N/A | | 18-Sep-09 | HIGHLAND CAPITAL PARTNERS VI LP Director | 152,044 | Direct | Purchase | N/A | | 18-Sep-09 | ATLAS VENTURE FUND V LP Director | 242,931 | Indirect | Purchase | N/A | | 17-Aug-09 | MOORE JEFFREY R. Officer | 75,000 | Direct | Statement of Ownership | N/A | | 1-Jul-09 | EFCAVITCH J WILLIAM Officer | 3,968 | Direct | Disposition (Non Open Market) at $0.44 per share. | $1,745 | | 1-Jul-09 | LOMBARDI STEPHEN J Officer | 7,198 | Direct | Disposition (Non Open Market) at $0 per share. | N/A | | 15-Apr-09 | ALLISON ELISABETH Director | 12,896 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 15-Apr-09 | MELAS KYRIAZI THEO Director | 15,873 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 1-Apr-09 | LOWY RONALD A Officer | 11,350 | Direct | Disposition (Non Open Market) at $0.63 per share. | $7,150 | | 10-Feb-09 | LOWY RONALD A Officer | 39,880 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 28-Jan-09 | EFCAVITCH J WILLIAM Officer | 50,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 28-Jan-09 | LOMBARDI STEPHEN J Officer | 87,500 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 28-Jan-09 | LEVINE MARC S Officer | 50,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 28-Jan-09 | LOWY RONALD A Officer | 79,760 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 28-Jan-09 | HALL STEPHEN P Officer | 50,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 23-Dec-08 | HEF VI, LIMITED PARTNERSHIP Director | 267,241 | Indirect | Purchase | N/A | | 23-Dec-08 | HEF VI, LIMITED PARTNERSHIP Director | 359,860 | Indirect | Statement of Ownership | N/A | | 23-Dec-08 | HIGGINS ROBERT F Director | 8,620,690 | Indirect | Purchase | N/A | | 23-Dec-08 | VERSANT VENTURE CAPITAL II, LP Beneficial Owner (10% or more) | 8,620,690 | Indirect | Purchase | N/A | | 23-Dec-08 | HIGHLAND MANAGEMENT PARTNERS VI L P Director | 8,353,449 | Indirect | Purchase | N/A | | 23-Dec-08 | AFEYAN NOUBAR Director | 8,620,690 | Indirect | Purchase | N/A | | 23-Dec-08 | BARRETT PETER Director | 8,620,690 | Indirect | Purchase | N/A | | 23-Dec-08 | ATWOOD BRIAN G Director | 8,620,690 | Indirect | Purchase | N/A | | 23-Dec-08 | COLELLA SAMUEL D Beneficial Owner (10% or more) | 8,620,690 | Indirect | Purchase | N/A | | 23-Dec-08 | AGTC ADVISORS FUND LP Director | 8,620,690 | Indirect | Purchase | N/A | | 23-Dec-08 | HIGHLAND CAPITAL PARTNERS VI LP Director | 5,395,475 | Direct | Purchase | N/A | | 23-Dec-08 | ATLAS VENTURE FUND V LP Director | 8,620,690 | Indirect | Purchase | N/A | | 11-Jun-08 | EFCAVITCH J WILLIAM Officer | 50,000 | Direct | Acquisition (Non Open Market) at $0 per share. | N/A | | 27-May-08 | ALLISON ELISABETH Director | 1,000 | Direct | Purchase at $4.98 per share. | $4,980 | | 30-Apr-08 | HALL STEPHEN P Officer | N/A | Direct | Statement of Ownership | N/A | | 19-Mar-08 | LAFOND KEVIN G Officer | 1,704 | Direct | Statement of Ownership | N/A | | 28-Jan-08 | ALLISON ELISABETH Director | N/A | Direct | Statement of Ownership | N/A |
|
* = Where indicated, some values are estimates. 1 = Potential proceeds estimated by the filer. 2 = Estimated based on the average of multiple prices reported. 3 = Multiple dates reported. Most recent date shown. |
|