| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| SC 13G/A | Report | SC 13G/A | Feb 9, 2022 | |
| SC 13G | Report | SC 13G | Dec 3, 2021 | |
| SC 13G | Report | Feb 11, 2021 | ||
| SC 13G/A | Report | Feb 11, 2021 | ||
| SC 13G | Report | SCHEDULE 13G | Feb 10, 2021 | |
| SC 13G/A | Report | Feb 1, 2021 | ||
| SC 13G/A | Report | Feb 13, 2020 | ||
| SC 13G/A | Report | Feb 6, 2020 | ||
| SC 13G/A | Report | Feb 13, 2019 | ||
| SC 13G/A | Report | Feb 6, 2019 | ||
| SC 13G/A | Report | Feb 14, 2018 | ||
| SC 13G/A | Report | Jan 23, 2018 | ||
| SC 13G/A | Report | SC 13G/A | Sep 12, 2017 | |
| SC 13G | Report | SCHEDULE 13G | Jun 26, 2017 | |
| SC 13G | Report | 13G | Feb 14, 2017 | |
| SC 13G/A | Report | Jan 27, 2017 | ||
| SC 13G/A | Report | SEC SCHEDULE 13G | Feb 11, 2016 | |
| SC 13G/A | Report | Jan 27, 2016 | ||
| SC 13G/A | Report | SEC SCHEDULE 13G | Aug 10, 2015 | |
| SC 13G/A | Report | SEC SCHEDULE 13G | Feb 12, 2015 | |
| SC 13G/A | Report | Jan 26, 2015 | ||
| SC 13G/A | Report | DISCLOSURE DOCUMENT | Aug 11, 2014 | |
| SC 13G | Report | DISCLOSURE DOCUMENT | Feb 14, 2014 | |
| SC 13G/A | Report | Jan 31, 2014 | ||
| SC 13G/A | Report | Feb 5, 2013 | ||
| SC 13G/A | Report | SCHEDULE 13G AMENDMENT NO. 4 | Feb 13, 2012 | |
| SC 13G | Report | Feb 9, 2012 | ||
| SC 13G/A | Report | Jun 10, 2011 | ||
| SC 13G/A | Report | SC 13G/A | Feb 14, 2011 | |
| SC 13G | Report | Feb 9, 2011 | ||
| SC 13G/A | Report | ZIX CORPORATION | Oct 1, 2010 | |
| SC 13G/A | Report | SC 13G/A | Feb 19, 2010 | |
| SC 13G | Report | SC 13G | Feb 16, 2010 |