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 Jul 15, 2025 involved receiving (via award) 164 shares valued at $6.2K.
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 Jul 15, 2025, when they sold 164 shares at $38.01 per share.
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| $N/A |
| Discretionary |
| Jun 7, 2024 | CRNX | $0 | Award | 3,400 | $N/A | Discretionary |
| May 15, 2024 | CYTK | $0 | Award | 5,600 | $N/A | Discretionary |
| Jan 2, 2024 | CYTK | $6.2K | Award | 74 | $84.12 | Discretionary |
| Dec 27, 2023 | CYTK | $22.2K | Option Exercise | 5,000 | $4.44 | Planned |
| Dec 27, 2023 | CYTK | $368.0K | Sale | 5,000 | $73.60 | Planned |
| Dec 27, 2023 | CYTK | $22.2K | Option Exercise | 5,000 | $4.44 | Planned |
| Dec 27, 2023 | CYTK | $368.0K | Sale | 5,000 | $73.60 | Planned |
| Oct 2, 2023 | CYTK | $12.5K | Award | 448 | $27.88 | Discretionary |
| Aug 21, 2023 | CYTK | $40.5K | Option Exercise | 6,020 | $6.72 | Planned |
| Aug 21, 2023 | CYTK | $192.8K | Sale | 6,020 | $32.02 | Planned |
| Jul 3, 2023 | CYTK | $12.5K | Award | 374 | $33.36 | Discretionary |
| Jun 16, 2023 | CRNX | $0 | Award | 6,000 | $N/A | Discretionary |
| May 10, 2023 | CYTK | $0 | Award | 5,000 | $N/A | Discretionary |
| Apr 3, 2023 | CYTK | $11.2K | Award | 298 | $37.71 | Discretionary |
| Feb 6, 2023 | CYTK | $315.0K | Sale | 7,000 | $45.00 | Discretionary |
| Feb 6, 2023 | CYTK | $47.0K | Option Exercise | 7,000 | $6.72 | Discretionary |
| Jan 3, 2023 | CYTK | $11.2K | Award | 253 | $44.35 | Discretionary |
| Oct 3, 2022 | CYTK | $5.6K | Award | 110 | $51.11 | Discretionary |
| Sep 1, 2022 | CYTK | $28.2K | Option Exercise | 4,166 | $6.78 | Discretionary |
| Sep 1, 2022 | CYTK | $219.9K | Sale | 4,166 | $52.79 | Discretionary |
| Jul 1, 2022 | CYTK | $5.6K | Award | 137 | $41.00 | Discretionary |
| May 10, 2022 | CYTK | $0 | Award | 5,000 | $N/A | Discretionary |
| Apr 1, 2022 | CYTK | $5.6K | Award | 146 | $38.38 | Discretionary |
| Jan 3, 2022 | CYTK | $5.6K | Award | 122 | $46.00 | Discretionary |
| Dec 27, 2021 | CYTK | $184.8K | Sale | 4,166 | $44.37 | Discretionary |
| Dec 27, 2021 | CYTK | $22.7K | Option Exercise | 4,166 | $5.46 | Discretionary |
| Oct 1, 2021 | CYTK | $11.2K | Award | 306 | $36.74 | Discretionary |
| Jul 7, 2021 | CYTK | $1.2K | Award | 63 | $19.77 | Discretionary |