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| Insider & restricted shareholder transactions reported over the last two years | |||||
| Date | Shares | Stock | Transaction | ||
| 13-Mar-08 | 26,248 | SIGM | Option Exercise at $1.69 - $11.06 per share. | ||
| 13-Mar-08 | 26,248 | SIGM |
Automatic Sale at $21.86 - $22.5 per share. (Proceeds of about $582,000) | ||
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