| INSIDER TRANSACTIONS REPORTED - LAST TWO YEARS |
| Date | Insider | Shares | Type | Transaction | Value* | | 29-Aug-08 | TUTTLE LISA Officer | 9,342 | Direct | Disposition (Non Open Market) | N/A | | 29-Aug-08 | ROSEMAN STEPHEN Director | 629,328 | Indirect | Disposition (Non Open Market) | N/A | | 29-Aug-08 | SPENCER CAPITAL MANAGEMENT, LLC Beneficial Owner (10% or more) | 1,502,221 | Indirect | Disposition (Non Open Market) | N/A | | 29-Aug-08 | ARCH VENTURE FUND IV L P Beneficial Owner (10% or more) | 1,044,993 | Direct | Disposition (Non Open Market) | N/A |
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* = 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. |
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