| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Feb 16, 2022 | Feb 15, 2022 | 000-28082 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 11, 2022 | Dec 31, 2021 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 5, 2021 | Aug 4, 2021 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 10, 2021 | Jun 8, 2021 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 5, 2021 | Mar 31, 2021 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 8, 2021 | Feb 17, 2021 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2021 | Feb 17, 2021 | 000-28082 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 26, 2021 | Dec 31, 2020 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 30, 2020 | Nov 25, 2020 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 4, 2020 | Aug 2, 2020 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 11, 2020 | Jun 9, 2020 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 28, 2020 | May 27, 2020 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 20, 2020 | Feb 18, 2020 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 7, 2020 | Jan 3, 2020 | 000-28082 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 6, 2020 | Dec 31, 2019 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 6, 2019 | Dec 4, 2019 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 3, 2019 | Oct 2, 2019 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 17, 2019 | Sep 16, 2019 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 2, 2019 | Jul 1, 2019 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 7, 2019 | Jun 5, 2019 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2019 | Apr 2, 2019 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 19, 2019 | Mar 15, 2019 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 15, 2019 | Feb 14, 2019 | 000-28082 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 4, 2019 | Dec 31, 2018 | 000-28082 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 14, 2018 | Feb 13, 2018 | 000-28082 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 29, 2018 | Dec 31, 2017 | 000-28082 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 28, 2017 | Nov 20, 2017 | 000-28082 |