Greenman William Mariner
Insider transactions at 1 company
This page shows all SEC Form 4 filings attributed to Greenman William Mariner. Form 4 disclosures are required whenever a corporate insider — director, officer, or 10%+ shareholder — buys, sells, or receives company stock. Each row represents a separate reported transaction. All data is sourced directly from the SEC EDGAR public database.
| Company | Title | Type | Shares | Price | Value | Date |
|---|---|---|---|---|---|---|
| CERS | President and CEO | Sale | 71,086 | $1.45 | $103,075 | Mar 14, 2025 |
| CERS | President and CEO | Sale | 60,984 | $1.50 | $91,476 | Mar 6, 2025 |
| CERS | President and CEO | Option Exercise | 57,637 | — | — | Mar 4, 2025 |
| CERS | President and CEO | Sale | 63,611 | $2.02 | $128,494 | Mar 12, 2024 |
| CERS | President and CEO | Award / Grant | 575,000 | — | — | Mar 1, 2024 |
| 0001435049 | Disposition | 23,643 | — | — | Aug 11, 2023 | |
| 0001435049 | Sale | 1,155 | $23.30 | $26,912 | May 26, 2023 | |
| CERS | President and CEO | Sale | 37,748 | $2.80 | $105,694 | Mar 12, 2023 |
| CERS | President and CEO | Award / Grant | 575,000 | — | — | Mar 1, 2023 |
| CERS | President and CEO | Sale | 78,043 | $5.04 | $393,337 | Mar 12, 2022 |
| CERS | President and CEO | Option Exercise | 380,000 | $3.75 | $1,425,000 | Feb 25, 2022 |
| 0001435049 | Option Exercise | 1,663 | $2.60 | $4,324 | Oct 21, 2021 | |
| CERS | President and CEO | Option Exercise | 100,000 | $2.08 | $208,000 | Aug 3, 2021 |
| CERS | President and CEO | Option Exercise | 550,000 | $2.70 | $1,485,000 | Apr 16, 2021 |
| CERS | President and CEO | Option Exercise | 104,363 | — | — | Mar 12, 2021 |
| CERS | President and CEO | Option Exercise | 100,000 | $3.00 | $300,000 | Aug 26, 2020 |
| 0001435049 | Option Exercise | 19,835 | $0.45 | $8,926 | Mar 18, 2020 | |
| CERS | President and CEO | Sale | 27,865 | $3.59 | $100,035 | Mar 17, 2020 |
| CERS | President and CEO | Option Exercise | 40,000 | $2.15 | $86,000 | Sep 24, 2019 |
| CERS | President and CEO | Purchase | 10,000 | $4.60 | $46,000 | Jun 4, 2019 |
| CERS | President and CEO | Option Exercise | 100 | $1.06 | $106 | Apr 22, 2019 |
| CERS | President and CEO | Option Exercise | 71,667 | — | — | Mar 12, 2019 |
| CERS | President and CEO | Option Exercise | 28,125 | — | — | Mar 10, 2019 |
| CERS | President and CEO | Option Exercise | 150,000 | $0.79 | $118,500 | Dec 28, 2018 |
| CERS | President and CEO | Option Exercise | 40,000 | $4.19 | $167,600 | Sep 27, 2018 |
| CERS | President and CEO | Sale | 7,735 | $4.80 | $37,128 | Mar 10, 2018 |
| CERS | President and CEO | Option Exercise | 22,500 | — | — | Mar 15, 2017 |
| CERS | President and CEO | Option Exercise | 55,000 | $5.55 | $305,250 | Sep 30, 2016 |
| 0001435049 | Sale | 3,000 | $30.65 | $91,950 | Nov 30, 2015 | |
| 0001435049 | Purchase | 3,000 | $17.00 | $51,000 | Apr 20, 2015 | |
| CERS | President and CEO | Purchase | 9,300 | $3.90 | $36,270 | Nov 10, 2014 |
| CERS | President and CEO | Option Exercise | 46,500 | $2.28 | $106,020 | May 5, 2014 |
| CERS | President and CEO | Option Exercise | 50 | $3.52 | $176 | Mar 26, 2014 |
| CERS | President and CEO | Option Exercise | 53,500 | $2.28 | $121,980 | Mar 4, 2014 |
| CERS | President and CEO | Option Exercise | 53,500 | $2.28 | $121,980 | Mar 3, 2014 |
| CERS | President and CEO | Option Exercise | 17,250 | $4.25 | $73,313 | Aug 22, 2013 |
| CERS | President & CEO | Other | 2,866 | $2.95 | $8,455 | Jan 7, 2013 |
| CERS | President and CEO | Purchase | 3,200 | $3.02 | $9,664 | Nov 19, 2012 |
| CERS | President and CEO | Purchase | 100 | $2.82 | $282 | Nov 16, 2012 |
| CERS | President and CEO | Other | 12,020 | $1.77 | $21,275 | Feb 29, 2012 |
| CERS | President and CEO | Purchase | 10,000 | $2.83 | $28,300 | May 3, 2011 |
| CERS | Sr. VP Bus. Dev. & Marketing | Other | 1,672 | $2.82 | $4,715 | Jan 10, 2011 |
| CERS | Sr. VP Bus. Dev. & Marketing | Other | 1,746 | $1.78 | $3,108 | Jan 14, 2010 |
| CERS | Sr. VP Bus. Dev. & Marketing | Award / Grant | 7,589 | — | — | Jan 6, 2010 |
| CERS | President, Cerus Europe | Award / Grant | 4,506 | — | — | Jan 10, 2008 |
| CERS | President, Cerus Europe | Award / Grant | 4,958 | — | — | Jan 5, 2007 |
| CERS | President, Cerus Europe | Award / Grant | 4,958 | — | — | Jan 5, 2007 |