| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 20, 2021 | Dec 17, 2021 | 001-11993 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 21, 2021 | Sep 17, 2021 | 001-11993 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 10, 2021 | Sep 9, 2021 | 001-11993 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 6, 2021 | Aug 5, 2021 | 001-11993 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 14, 2021 | Jun 10, 2021 | 001-11993 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 19, 2021 | Mar 17, 2021 | 001-11993 |
| 4 | Open Document | Open Filing | 4 | Feb 12, 2021 | Feb 10, 2021 | 001-11993 |
| 4 | Open Document | Open Filing | 4 | Dec 29, 2020 | Dec 24, 2020 | 001-11993 |
| 4 | Open Document | Open Filing | 4 | Dec 16, 2020 | Dec 14, 2020 | 001-11993 |
| 4 | Open Document | Open Filing | 4 | Aug 20, 2020 | Aug 20, 2020 | 001-11993 |
| 4 | Open Document | Open Filing | 4 | Jul 24, 2020 | Jul 24, 2020 | 001-11993 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Apr 23, 2020 | Apr 21, 2020 | 001-38504 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 7, 2019 | Aug 6, 2019 | 001-11993 |