Wendall Wierenga serves as Executive at XENOPORT INC, where they oversee executive responsibilities. Since joining the company, Wendall Wierenga has executed 127 insider transactions totaling $4.0M, demonstrating a bearish approach to their equity position. Their most recent transaction on Dec 5, 2007 involved selling 700 shares valued at $38.4K.
Wendall Wierenga currently holds 32,345 shares of XENOPORT INC (XNPT), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Wendall Wierenga has been a net seller of XNPT stock. They have purchased $117.0K and sold $3.9M worth of shares.
Wendall Wierenga's most recent insider trade was on Dec 5, 2007, when they sold 700 shares at $54.79 per share.
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| $38.90 |
| Discretionary |
| Aug 30, 2007 | ONXX | $11.7K | Sale | 300 | $38.92 | Discretionary |
| Aug 30, 2007 | ONXX | $7.8K | Sale | 200 | $38.84 | Discretionary |
| Aug 30, 2007 | ONXX | $26.3K | Option Exercise | 1,500 | $17.50 | Discretionary |
| Aug 30, 2007 | ONXX | $78.2K | Option Exercise | 5,000 | $15.63 | Discretionary |
| Aug 30, 2007 | ONXX | $33.3K | Option Exercise | 5,000 | $6.66 | Discretionary |
| Aug 30, 2007 | ONXX | $182.6K | Sale | 4,700 | $38.86 | Discretionary |
| Aug 30, 2007 | ONXX | $58.3K | Sale | 1,500 | $38.85 | Discretionary |
| Aug 30, 2007 | ONXX | $89.3K | Sale | 2,300 | $38.82 | Discretionary |
| Aug 30, 2007 | ONXX | $35.0K | Sale | 900 | $38.88 | Discretionary |
| Aug 30, 2007 | ONXX | $35.0K | Sale | 900 | $38.91 | Discretionary |
| Aug 30, 2007 | ONXX | $15.6K | Sale | 400 | $38.89 | Discretionary |
| May 16, 2007 | XNPT | $205.8K | Sale | 5,000 | $41.15 | Discretionary |
| Feb 22, 2007 | ONXX | $28.1K | Sale | 1,000 | $28.05 | Discretionary |
| Feb 22, 2007 | ONXX | $25.2K | Option Exercise | 5,000 | $5.04 | Discretionary |
| Feb 22, 2007 | ONXX | $15.5K | Option Exercise | 2,000 | $7.75 | Discretionary |
| Feb 22, 2007 | ONXX | $14.0K | Sale | 500 | $27.98 | Discretionary |
| Feb 22, 2007 | ONXX | $14.0K | Sale | 500 | $28.04 | Discretionary |
| Feb 22, 2007 | ONXX | $140.1K | Sale | 5,000 | $28.02 | Discretionary |
| Dec 15, 2006 | XNPT | $100.1K | Sale | 4,000 | $25.02 | Discretionary |
| Nov 20, 2006 | XNPT | $0 | Gift | 4,000 | $N/A | Discretionary |
| Nov 6, 2006 | XNPT | $28.7K | Sale | 1,200 | $23.94 | Discretionary |
| Nov 6, 2006 | XNPT | $2.4K | Sale | 100 | $23.92 | Discretionary |
| Nov 6, 2006 | XNPT | $78.9K | Sale | 3,300 | $23.90 | Discretionary |
| Nov 6, 2006 | XNPT | $7.2K | Sale | 300 | $23.91 | Discretionary |
| Nov 6, 2006 | XNPT | $2.4K | Sale | 100 | $23.87 | Discretionary |