- Corporate Officers - W
- Wierenga Wendall
Insider Trading History of Wierenga Wendall
The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Wierenga Wendall since 2006.
This trader's CIK number is 1235945.
At the time of last reporting, Wierenga Wendall was the Director of Cytokinetics Inc. (stock ticker symbol CYTK).
Also see all insider trading activities at Cytokinetics Inc.
Note that in the past
WIERENGA WENDALL also reported insider trading activities as an insider of the following companies:
Yearly summary of insider trading at Crinetics Pharmaceuticals, Inc. (CRNX) by Wierenga Wendall
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2020 | CRNX | 0 | $0 | 0 | $0 | 25,329 | $18,490 |
Yearly summary of insider trading at Xenoport Inc (XNPT) by Wierenga Wendall
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2016 | XNPT | 0 | $0 | 0 | $0 | 5,000 | $0 |
| 2015 | XNPT | 5,000 | $28,170 | 0 | $0 | 5,000 | $0 |
| 2014 | XNPT | 10,000 | $39,900 | 0 | $0 | 5,000 | $0 |
| 2013 | XNPT | 0 | $0 | 0 | $0 | 5,000 | $0 |
| 2008 | XNPT | 0 | $0 | 4,000 | $194,196 | 0 | $0 |
| 2007 | XNPT | 0 | $0 | 8,000 | $370,294 | 0 | $0 |
| 2006 | XNPT | 0 | $0 | 9,000 | $219,620 | 0 | $0 |
Yearly summary of insider trading at Cytokinetics Inc (CYTK) by Wierenga Wendall
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2025 | CYTK | 0 | $0 | 20,000 | $769,200 | 20,000 | $124,200 |
| 2024 | CYTK | 0 | $0 | 5,936 | $305,785 | 5,936 | $43,747 |
| 2023 | CYTK | 0 | $0 | 23,020 | $1,243,760 | 23,020 | $131,894 |
| 2022 | CYTK | 0 | $0 | 4,166 | $219,923 | 4,166 | $28,245 |
| 2021 | CYTK | 0 | $0 | 4,166 | $184,853 | 4,166 | $22,746 |
| 2020 | CYTK | 0 | $0 | 9,999 | $159,984 | 9,999 | $98,390 |
Yearly summary of insider trading at Onyx Pharmaceuticals Inc (ONXX) by Wierenga Wendall
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2013 | ONXX | 0 | $0 | 250 | $19,427 | 0 | $0 |
| 2012 | ONXX | 0 | $0 | 6,000 | $430,154 | 5,000 | $135,700 |
| 2011 | ONXX | 0 | $0 | 500 | $19,259 | 0 | $0 |
| 2008 | ONXX | 0 | $0 | 5,000 | $205,030 | 5,000 | $59,300 |
| 2007 | ONXX | 0 | $0 | 18,500 | $643,205 | 18,500 | $197,266 |
Yearly summary of insider trading at Tranzyme Inc (OCRX) by Wierenga Wendall
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2015 | OCRX | 5,000 | $18,550 | 0 | $0 | 0 | $0 |
Yearly summary of insider trading at Seelos Therapeutics, Inc. (APRI) by Wierenga Wendall
| | Insider Buying | Insider Sales | Option Exercises |
|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
|---|
| 2014 | APRI | 20,000 | $30,360 | 0 | $0 | 0 | $0 |
Insider trading activities at 6 companies by Wierenga Wendall:
1. Crinetics Pharmaceuticals, Inc. (CRNX)
2. Xenoport Inc (XNPT)
3. Cytokinetics Inc (CYTK)
4. Onyx Pharmaceuticals Inc (ONXX)
5. Tranzyme Inc (OCRX)
6. Seelos Therapeutics, Inc. (APRI)
Table 1. Insider trading of Crinetics Pharmaceuticals, Inc. (CRNX) by Wierenga Wendall
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2020-04-28 | CRNX | Option Ex | 25,329 | .73 | 18,490 |
Table 2. Insider trading of Xenoport Inc (XNPT) by Wierenga Wendall
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2016-05-17 | XNPT | Option Ex | 5,000 | .00 | 0 |
| 2015-05-19 | XNPT | Option Ex | 5,000 | .00 | 0 |
| 2015-05-11 | XNPT | Buy | 5,000 | 5.63 | 28,170 |
| 2014-05-27 | XNPT | Buy | 10,000 | 3.99 | 39,900 |
| 2014-05-14 | XNPT | Option Ex | 5,000 | .00 | 0 |
| 2013-05-16 | XNPT | Option Ex | 5,000 | .00 | 0 |
| 2008-08-19 | XNPT | Sale | 4,000 | 48.55 | 194,196 |
| 2007-12-05 | XNPT | Sale | 3,000 | 54.85 | 164,544 |
| 2007-05-16 | XNPT | Sale | 5,000 | 41.15 | 205,750 |
| 2006-12-15 | XNPT | Sale | 4,000 | 25.02 | 100,080 |
| 2006-11-06 | XNPT | Sale | 5,000 | 23.91 | 119,540 |
Table 3. Insider trading of Cytokinetics Inc (CYTK) by Wierenga Wendall
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2025-04-21 | CYTK | Sale | 20,000 | 38.46 | 769,200 |
| 2025-04-21 | CYTK | Option Ex | 20,000 | 6.21 | 124,200 |
| 2024-12-16 | CYTK | Option Ex | 742 | 7.37 | 5,468 |
| 2024-12-16 | CYTK | Sale | 742 | 48.61 | 36,068 |
| 2024-11-25 | CYTK | Option Ex | 742 | 7.37 | 5,468 |
| 2024-11-25 | CYTK | Sale | 742 | 50.00 | 37,100 |
| 2024-10-28 | CYTK | Sale | 4,452 | 52.25 | 232,617 |
| 2024-10-28 | CYTK | Option Ex | 4,452 | 7.37 | 32,811 |
| 2023-12-27 | CYTK | Sale | 10,000 | 73.60 | 736,000 |
| 2023-12-27 | CYTK | Option Ex | 10,000 | 4.44 | 44,400 |
| 2023-08-21 | CYTK | Option Ex | 6,020 | 6.72 | 40,454 |
| 2023-08-21 | CYTK | Sale | 6,020 | 32.02 | 192,760 |
| 2023-02-06 | CYTK | Sale | 7,000 | 45.00 | 315,000 |
| 2023-02-06 | CYTK | Option Ex | 7,000 | 6.72 | 47,040 |
| 2022-09-01 | CYTK | Option Ex | 4,166 | 6.78 | 28,245 |
| 2022-09-01 | CYTK | Sale | 4,166 | 52.79 | 219,923 |
| 2021-12-27 | CYTK | Option Ex | 4,166 | 5.46 | 22,746 |
| 2021-12-27 | CYTK | Sale | 4,166 | 44.37 | 184,853 |
| 2020-04-28 | CYTK | Option Ex | 9,999 | 9.84 | 98,390 |
| 2020-04-28 | CYTK | Sale | 9,999 | 16.00 | 159,984 |
Table 4. Insider trading of Onyx Pharmaceuticals Inc (ONXX) by Wierenga Wendall
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2013-02-01 | ONXX | Sale | 250 | 77.71 | 19,427 |
| 2012-11-01 | ONXX | Sale | 250 | 77.21 | 19,302 |
| 2012-08-24 | ONXX | Sale | 5,000 | 74.09 | 370,450 |
| 2012-08-24 | ONXX | Option Ex | 5,000 | 27.14 | 135,700 |
| 2012-08-01 | ONXX | Sale | 250 | 74.76 | 18,690 |
| 2012-05-01 | ONXX | Sale | 250 | 45.47 | 11,367 |
| 2012-02-01 | ONXX | Sale | 250 | 41.38 | 10,345 |
| 2011-11-01 | ONXX | Sale | 250 | 39.37 | 9,842 |
| 2011-05-02 | ONXX | Sale | 250 | 37.67 | 9,417 |
| 2008-08-27 | ONXX | Option Ex | 5,000 | 11.86 | 59,300 |
| 2008-08-27 | ONXX | Sale | 5,000 | 41.01 | 205,030 |
| 2007-08-30 | ONXX | Sale | 11,500 | 38.87 | 447,051 |
| 2007-08-30 | ONXX | Option Ex | 11,500 | 13.26 | 152,501 |
| 2007-02-22 | ONXX | Sale | 7,000 | 28.02 | 196,154 |
| 2007-02-22 | ONXX | Option Ex | 7,000 | 6.39 | 44,765 |
Table 5. Insider trading of Tranzyme Inc (OCRX) by Wierenga Wendall
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2015-06-23 | OCRX | Buy | 5,000 | 3.71 | 18,550 |
Table 6. Insider trading of Seelos Therapeutics, Inc. (APRI) by Wierenga Wendall
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|
| 2014-10-22 | APRI | Buy | 20,000 | 1.52 | 30,360 |
Insider trading activities including stock purchases, stock sales, and option exercises
listed in the above table cannot be completely guaranteed as to their accuracy.
For more information regarding the trades made by Wierenga Wendall
(Director of Cytokinetics Inc at the time of this reporting) see
the Securities and Exchange Commission (SEC) website.