| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 FOR 08-23-2023 | Aug 29, 2023 | Aug 23, 2023 | 000-55558 |
| 4/A | Open Document | Open Filing | FORM 4/A AMENDMENT NO. 1 FOR 05-12-2021 | Apr 4, 2023 | May 12, 2021 | 000-55072 |
| 4 | Open Document | Open Filing | FORM 4 FOR 05-12-2021 | Apr 3, 2023 | May 12, 2021 | 000-55072 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 15, 2020 | Oct 9, 2020 | 000-55558 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 13, 2020 | Aug 12, 2020 | 000-55072 |
| 5 | Open Document | Open Filing | Feb 16, 2018 | Dec 31, 2017 | 000-53497 | |
| 4/A | Open Document | Open Filing | May 3, 2016 | Apr 15, 2016 | 000-53497 | |
| 4 | Open Document | Open Filing | Apr 18, 2016 | Apr 15, 2016 | 000-53497 | |
| 5 | Open Document | Open Filing | FORM 5 | Feb 12, 2016 | Dec 31, 2015 | 000-53497 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 21, 2016 | Jan 21, 2016 | 000-53497 |
| 4 | Open Document | Open Filing | Dec 10, 2015 | Dec 9, 2015 | 000-53497 | |
| 4 | Open Document | Open Filing | Sep 8, 2015 | Sep 4, 2015 | 000-53497 | |
| 4 | Open Document | Open Filing | Aug 25, 2015 | Aug 21, 2015 | 000-53497 | |
| 4 | Open Document | Open Filing | FORM 4 | Jul 7, 2015 | Jun 17, 2015 | 000-53497 |
| 4/A | Open Document | Open Filing | FORM 4/A | Apr 9, 2015 | Feb 25, 2015 | 000-53497 |
| 4/A | Open Document | Open Filing | FORM 4/A | Apr 9, 2015 | Dec 17, 2014 | 000-53497 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 26, 2015 | Feb 25, 2015 | 000-53497 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 23, 2015 | Dec 31, 2014 | 000-53497 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 19, 2014 | Dec 17, 2014 | 000-53497 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 12, 2014 | Jun 10, 2014 | 000-53497 |
| 5 | Open Document | Open Filing | FORM 5 | Feb 4, 2014 | Dec 31, 2013 | 000-53497 |