| Symbol | Relationship | Date | Transaction | Cost | # Shares | Value($) | Total Shares | Form 4 |
| ARST | CTO and EVP R&D | Oct 22, 2010 | Option Exercise | $43.50 | 166,070 | 7,224,045 | 0 | Oct 25, 2010, 03:44 PM |
| ARST | CTO and EVP R&D | Oct 21, 2010 | Option Exercise | $2.51 | 166,070 | 417,600 | 166,070 | Oct 25, 2010, 03:44 PM |
| ARST | CTO and EVP R&D | Oct 21, 2010 | Option Exercise | $43.50 | 721,795 | 31,398,083 | 0 | Oct 25, 2010, 03:44 PM |
| Symbol | Relationship | Date | Transaction | Value($) |
| ARST | CTO and EVP R&D | Oct 22, 2010 | Option Exercise | 7,224,045 |
| ARST | CTO and EVP R&D | Oct 21, 2010 | Option Exercise | 417,600 |
| ARST | CTO and EVP R&D | Oct 21, 2010 | Option Exercise | 31,398,083 |