| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jul 7, 2022 | Jul 1, 2022 | 000-54258 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 16, 2022 | Jun 1, 2022 | 000-54258 |
| 4 | Open Document | Open Filing | FORM 4 | May 4, 2022 | May 2, 2022 | 000-54258 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 1, 2021 | Aug 31, 2021 | 000-55418 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 3, 2021 | Aug 1, 2021 | 000-54258 |
| 3 | Open Document | Open Filing | FORM 3 | Jul 12, 2021 | Jul 1, 2021 | 000-54258 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 1, 2021 | Mar 1, 2021 | 000-55418 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 1, 2020 | Jun 17, 2020 | 000-55418 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 17, 2020 | Jan 15, 2020 | 000-55418 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 4, 2018 | Sep 1, 2018 | 000-55418 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 2, 2018 | Jul 31, 2018 | 000-55418 |
| 4/A | Open Document | Open Filing | FORM 4/A | Feb 1, 2018 | Jan 24, 2018 | 000-55418 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 25, 2018 | Jan 23, 2018 | 000-55418 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 25, 2018 | Jan 23, 2018 | 000-55418 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 25, 2018 | Jan 23, 2018 | 000-55418 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 17, 2017 | Nov 14, 2017 | 000-55418 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 8, 2016 | Dec 7, 2016 | 000-55418 |