| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 13, 2024 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 9, 2023 | |
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 9, 2022 | |
| SC 13G/A | Report | Feb 16, 2021 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 10, 2021 | |
| SC 13G | Report | Feb 14, 2020 | ||
| SC 13G/A | Report | SCHEDULE 13G/A | Feb 12, 2020 | |
| SC 13G/A | Report | Feb 14, 2019 | ||
| SC 13G/A | Report | Feb 11, 2019 | ||
| SC 13G/A | Report | Feb 14, 2018 | ||
| SC 13G/A | Report | Feb 9, 2018 | ||
| SC 13G/A | Report | Feb 14, 2017 | ||
| SC 13G | Report | Feb 9, 2017 | ||
| SC 13G/A | Report | Feb 7, 2017 | ||
| SC 13G/A | Report | Feb 12, 2016 | ||
| SC 13G/A | Report | DHR AS OF 12/31/2015 | Feb 11, 2016 | |
| SC 13G/A | Report | Feb 13, 2015 | ||
| SC 13G/A | Report | DHR AS OF 12/31/2014 | Feb 11, 2015 | |
| SC 13G/A | Report | DHR AS OF 04/30/2014 | May 12, 2014 | |
| SC 13G/A | Report | Feb 14, 2014 | ||
| SC 13G/A | Report | DHR AS OF 12/31/2013 | Feb 13, 2014 | |
| SC 13G/A | Report | Feb 14, 2013 | ||
| SC 13G/A | Report | DHR AS OF 12/31/2012 | Feb 8, 2013 | |
| SC 13G/A | Report | DHR AS OF 04/30/2012 | May 10, 2012 | |
| SC 13G/A | Report | Feb 14, 2012 | ||
| SC 13G/A | Report | 12/31/2011 | Feb 9, 2012 | |
| SC 13G/A | Report | DOC ONE | Feb 14, 2011 | |
| SC 13G/A | Report | DHR AS OF 12/31/10 | Feb 10, 2011 | |
| SC 13G/A | Report | DOC ONE | Feb 16, 2010 | |
| SC 13G/A | Report | DHR AS OF 12/31/2009 | Feb 12, 2010 |