| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 10, 2021 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 12, 2020 | |
| SC 13G/A | Report | Feb 14, 2019 | ||
| SC 13G/A | Report | Feb 14, 2019 | ||
| SC 13G/A | Report | Feb 11, 2019 | ||
| SC 13G/A | Report | Jun 8, 2018 | ||
| SC 13G | Report | Feb 14, 2018 | ||
| SC 13G | Report | Feb 14, 2018 | ||
| SC 13G/A | Report | Feb 13, 2018 | ||
| SC 13G/A | Report | Feb 9, 2018 | ||
| SC 13G/A | Report | Feb 6, 2018 | ||
| SC 13G | Report | Feb 1, 2018 | ||
| SC 13G | Report | Feb 14, 2017 | ||
| SC 13G/A | Report | Feb 10, 2017 | ||
| SC 13G/A | Report | Feb 2, 2017 | ||
| SC 13G/A | Report | Feb 11, 2016 | ||
| SC 13G/A | Report | Jan 26, 2016 | ||
| SC 13G/A | Report | May 6, 2015 | ||
| SC 13G/A | Report | Feb 13, 2015 | ||
| SC 13G/A | Report | Feb 10, 2015 | ||
| SC 13G/A | Report | Jan 29, 2015 | ||
| SC 13G | Report | Feb 14, 2014 | ||
| SC 13G | Report | Feb 12, 2014 | ||
| SC 13G/A | Report | Feb 4, 2014 | ||
| SC 13G/A | Report | Oct 10, 2013 | ||
| SC 13G/A | Report | Feb 14, 2013 | ||
| SC 13G/A | Report | Feb 11, 2013 | ||
| SC 13G | Report | Jan 31, 2013 | ||
| SC 13G/A | Report | Feb 14, 2012 | ||
| SC 13G | Report | Feb 10, 2012 | ||
| SC 13G/A | Report | Jul 8, 2011 | ||
| SC 13G/A | Report | DOC ONE | Feb 14, 2011 | |
| SC 13G/A | Report | W. R. GRACE & CO. | Feb 14, 2011 | |
| SC 13G | Report | Feb 9, 2011 | ||
| SC 13G/A | Report | Nov 9, 2010 | ||
| SC 13G/A | Report | DOC ONE | Feb 16, 2010 | |
| SC 13G/A | Report | W. R. GRACE & CO. | Feb 16, 2010 | |
| SC 13G | Report | Jan 29, 2010 |