Wendall Wierenga is Director at CYTOKINETICS INC (CYTK). They have made 20 open-market trades across 5 companies since 2006, most recently 2025-07-15.
CIK 0001235945
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
4 open-market purchases totalling $117K since 2014, against 16 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| CYTK | SELL · 10b5-1 | 2025-04-21 | 2025-04-21 | $38.46 | $769K | +11.2% | -18.9% | -4.2% |
| CYTK | SELL | 2024-12-16 | 2024-12-16 | $48.61 | $36K | -2.4% | -3.4% | -7.4% |
| CYTK | SELL | 2024-11-25 | 2024-11-26 | $50.00 | $37K | -2.9% | -6.7% | -7.5% |
| CYTK | SELL · 10b5-1 | 2024-10-28 | 2024-10-31 | $52.25 | $233K | +8.9% | -1.9% | -5.7% |
| CYTK | SELL · 10b5-1 | 2023-12-27 | 2023-12-27 | $73.60 | $368K | +23.4% | +0.1% | -13.9% |
| CYTK | SELL | 2023-08-21 | 2023-08-21 | $32.02 | $386K | +6.1% | -2.9% | -1.9% |
| CYTK | SELL | 2023-02-06 | 2023-02-08 | $45.00 | $315K | -4.5% | -19.1% | -11.8% |
| CYTK | SELL | 2022-09-01 | 2022-09-01 | $52.79 | $440K | +0.1% | -5.8% | -21.7% |
| CYTK | SELL | 2021-12-27 | 2021-12-28 | $44.37 | $370K | -22.0% | -34.0% | -18.4% |
| CYTK | SELL | 2020-04-28 | 2020-04-29 | $16.00 | $160K | +31.4% | +29.6% | +45.1% |
| OCRX | BUY | 2015-06-23 | 2015-06-24 | $3.71 | $19K | N/A | N/A | N/A |
| XNPT | BUY | 2015-05-11 | 2015-05-12 | $5.63 | $28K | -16.8% | -3.6% | -3.6% |
| APRI | BUY | 2014-10-22 | 2014-10-24 | $1.52 | $30K | -15.2% | -2.0% | -2.0% |
| XNPT | BUY | 2014-05-27 | 2014-05-27 | $3.99 | $40K | -16.8% | -3.6% | -3.6% |
| ONXX | SELL · 10b5-1 | 2013-02-01 | 2013-02-05 | $77.71 | $19K | N/A | N/A | N/A |
| ONXX | SELL · 10b5-1 | 2012-11-01 | 2012-11-02 | $77.21 | $19K | N/A | N/A | N/A |
| ONXX | SELL | 2012-08-24 | 2012-08-28 | $74.09 | $370K | N/A | N/A | N/A |
| ONXX | SELL · 10b5-1 | 2012-08-01 | 2012-08-03 | $74.76 | $19K | N/A | N/A | N/A |
| ONXX | SELL · 10b5-1 | 2012-05-01 | 2012-05-03 | $45.47 | $11K | N/A | N/A | N/A |
| ONXX | SELL · 10b5-1 | 2012-02-01 | 2012-02-03 | $41.38 | $10K | N/A | N/A | N/A |
| ONXX | SELL · 10b5-1 | 2011-11-01 | 2011-11-02 | $39.37 | $10K | N/A | N/A | N/A |
| ONXX | SELL · 10b5-1 | 2011-08-01 | 2011-08-01 | $33.27 | $8K | N/A | N/A | N/A |
| ONXX | SELL · 10b5-1 | 2011-05-02 | 2011-05-02 | $37.67 | $9K | N/A | N/A | N/A |
| ONXX | SELL | 2008-08-27 | 2008-08-27 | $41.00 | $205K | N/A | N/A | N/A |
| XNPT | SELL | 2008-08-19 | 2008-08-21 | $48.54 | $175K | -16.8% | -3.6% | -3.6% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.