| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 15, 2025 | May 13, 2025 | 000-51481 | |
| 4 | Open Document | Open Filing | Jul 17, 2024 | Jul 15, 2024 | 000-51481 | |
| 4 | Open Document | Open Filing | Oct 30, 2023 | Oct 30, 2023 | 000-51481 | |
| 3 | Open Document | Open Filing | Oct 30, 2023 | Oct 30, 2023 | 000-51481 | |
| 4 | Open Document | Open Filing | Nov 26, 2019 | Nov 22, 2019 | 000-51481 | |
| 4 | Open Document | Open Filing | FORM 4 | Sep 10, 2018 | Jun 15, 2018 | 000-51481 |
| 4 | Open Document | Open Filing | FORM 4 | May 24, 2018 | May 23, 2018 | 000-51481 |
| 3 | Open Document | Open Filing | FORM 3 | Apr 10, 2018 | Apr 10, 2018 | 000-51481 |
| 4 | Open Document | Open Filing | 4 | Dec 27, 2017 | Dec 22, 2017 | 000-11635 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 13, 2016 | Jan 11, 2016 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Jan 8, 2016 | Jan 6, 2016 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Jan 6, 2016 | Jan 4, 2016 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Dec 23, 2015 | Dec 21, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Nov 18, 2015 | Nov 17, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Nov 16, 2015 | Nov 12, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Nov 12, 2015 | Nov 9, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Nov 9, 2015 | Nov 5, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Nov 4, 2015 | Nov 2, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Oct 2, 2015 | Oct 1, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 24, 2015 | Sep 22, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Sep 21, 2015 | Sep 17, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | 4 | Sep 16, 2015 | Sep 14, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 26, 2015 | Feb 24, 2015 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 8, 2014 | Dec 4, 2014 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 10, 2014 | Nov 7, 2014 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 3, 2014 | Apr 1, 2014 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 11, 2014 | Mar 7, 2014 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2014 | Mar 3, 2014 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 18, 2014 | Feb 13, 2014 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 12, 2014 | Feb 10, 2014 | 000-11635 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 15, 2014 | Jan 13, 2014 | 000-11635 |