The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Greenman William Mariner since 2011.
This trader's CIK number is 1377258.
At the time of last reporting, Greenman William Mariner was the President and CEO of Cerus Corp. (stock ticker symbol CERS).
Also see all insider trading activities at Cerus Corp.
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2023 | KDNY | 0 | $0 | 1,155 | $26,911 | 3,300 | $0 |
| 2021 | KDNY | 0 | $0 | 0 | $0 | 1,663 | $4,323 |
| 2020 | KDNY | 0 | $0 | 0 | $0 | 19,835 | $8,925 |
| 2015 | KDNY | 3,000 | $51,000 | 3,000 | $91,950 | 0 | $0 |
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | CERS | 0 | $0 | 277,920 | $408,189 | 57,637 | $0 |
| 2024 | CERS | 0 | $0 | 125,926 | $256,357 | 64,666 | $0 |
| 2023 | CERS | 0 | $0 | 60,480 | $169,344 | 172,192 | $0 |
| 2022 | CERS | 0 | $0 | 473,284 | $2,591,270 | 700,695 | $1,425,000 |
| 2021 | CERS | 0 | $0 | 156,407 | $997,563 | 977,696 | $1,693,000 |
| 2020 | CERS | 0 | $0 | 108,011 | $388,299 | 351,459 | $300,000 |
| 2019 | CERS | 10,000 | $46,000 | 45,459 | $272,720 | 162,392 | $86,106 |
| 2018 | CERS | 0 | $0 | 17,766 | $87,791 | 200,625 | $118,500 |
| 2017 | CERS | 0 | $0 | 8,786 | $36,989 | 22,500 | $0 |
| 2016 | CERS | 0 | $0 | 0 | $0 | 55,000 | $305,250 |
| 2014 | CERS | 21,800 | $85,630 | 0 | $0 | 100,050 | $228,174 |
| 2013 | CERS | 0 | $0 | 0 | $0 | 17,250 | $73,312 |
| 2012 | CERS | 17,000 | $48,938 | 0 | $0 | 0 | $0 |
| 2011 | CERS | 10,000 | $28,250 | 0 | $0 | 0 | $0 |
1. Chinook Therapeutics, Inc. (KDNY)
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2023-05-26 | KDNY | Option Ex | 3,300 | .00 | 0 |
| 2023-05-30 | KDNY | Sale | 1,155 | 23.30 | 26,911 |
| 2021-10-21 | KDNY | Option Ex | 1,663 | 2.60 | 4,323 |
| 2020-03-18 | ADRO | Option Ex | 19,835 | .45 | 8,925 |
| 2015-11-30 | ADRO | Sale | 3,000 | 30.65 | 91,950 |
| 2015-04-20 | ADRO | Buy | 3,000 | 17.00 | 51,000 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-03-13 | CERS | Sale | 71,086 | 1.45 | 103,074 |
| 2025-03-14 | CERS | Sale | 122,827 | 1.45 | 178,099 |
| 2025-03-07 | CERS | Sale | 60,984 | 1.50 | 91,354 |
| 2025-03-03 | CERS | Option Ex | 57,637 | .00 | 0 |
| 2025-03-04 | CERS | Sale | 23,023 | 1.55 | 35,662 |
| 2024-03-14 | CERS | Sale | 63,611 | 2.02 | 128,176 |
| 2024-03-13 | CERS | Sale | 62,315 | 2.06 | 128,181 |
| 2024-03-12 | CERS | Option Ex | 64,666 | .00 | 0 |
| 2023-03-12 | CERS | Option Ex | 172,192 | .00 | 0 |
| 2023-03-13 | CERS | Sale | 60,480 | 2.80 | 169,344 |
| 2022-03-12 | CERS | Option Ex | 320,695 | .00 | 0 |
| 2022-03-14 | CERS | Sale | 165,021 | 5.04 | 831,705 |
| 2022-02-25 | CERS | Option Ex | 380,000 | 3.75 | 1,425,000 |
| 2022-02-25 | CERS | Sale | 308,263 | 5.71 | 1,759,565 |
| 2021-08-03 | CERS | Option Ex | 100,000 | 2.08 | 208,000 |
| 2021-04-16 | CERS | Option Ex | 550,000 | 2.70 | 1,485,000 |
| 2021-03-15 | CERS | Sale | 156,407 | 6.38 | 997,563 |
| 2021-03-12 | CERS | Option Ex | 327,696 | .00 | 0 |
| 2020-08-26 | CERS | Option Ex | 100,000 | 3.00 | 300,000 |
| 2020-03-17 | CERS | Option Ex | 251,459 | .00 | 0 |
| 2020-03-17 | CERS | Sale | 108,011 | 3.60 | 388,299 |
| 2019-09-24 | CERS | Option Ex | 40,000 | 2.15 | 86,000 |
| 2019-06-04 | CERS | Buy | 10,000 | 4.60 | 46,000 |
| 2019-04-22 | CERS | Option Ex | 100 | 1.06 | 106 |
| 2019-03-10 | CERS | Option Ex | 22,500 | .00 | 0 |
| 2019-03-12 | CERS | Option Ex | 99,792 | .00 | 0 |
| 2019-03-13 | CERS | Sale | 37,678 | 5.90 | 222,300 |
| 2019-03-12 | CERS | Sale | 7,781 | 6.48 | 50,420 |
| 2018-12-28 | CERS | Option Ex | 150,000 | .79 | 118,500 |
| 2018-03-12 | CERS | Option Ex | 28,125 | .00 | 0 |
| 2018-03-12 | CERS | Sale | 7,735 | 4.80 | 37,135 |
| 2018-03-13 | CERS | Sale | 10,031 | 5.05 | 50,656 |
| 2018-03-10 | CERS | Option Ex | 22,500 | .00 | 0 |
| 2017-03-15 | CERS | Sale | 8,786 | 4.21 | 36,989 |
| 2017-03-10 | CERS | Option Ex | 22,500 | .00 | 0 |
| 2016-09-30 | CERS | Option Ex | 55,000 | 5.55 | 305,250 |
| 2014-11-10 | CERS | Buy | 21,800 | 3.93 | 85,630 |
| 2014-05-05 | CERS | Option Ex | 46,500 | 2.28 | 106,019 |
| 2014-03-26 | CERS | Option Ex | 50 | 3.52 | 176 |
| 2014-03-03 | CERS | Option Ex | 53,500 | 2.28 | 121,979 |
| 2013-08-22 | CERS | Option Ex | 17,250 | 4.25 | 73,312 |
| 2012-11-19 | CERS | Buy | 3,200 | 3.02 | 9,664 |
| 2012-11-16 | CERS | Buy | 13,800 | 2.85 | 39,274 |
| 2011-05-03 | CERS | Buy | 10,000 | 2.83 | 28,250 |
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 Greenman William Mariner (President and CEO of Cerus Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.