| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Jun 29, 2021 | Jun 25, 2021 | 001-39469 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 10, 2021 | Mar 8, 2021 | 001-40156 |
| 3 | Open Document | Open Filing | Mar 3, 2021 | Mar 3, 2021 | 001-40156 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 1, 2021 | Feb 25, 2021 | 001-40096 |
| 3 | Open Document | Open Filing | Feb 22, 2021 | Feb 22, 2021 | 001-40096 | |
| 4 | Open Document | Open Filing | Feb 9, 2021 | Feb 9, 2021 | 000-51018 | |
| 4 | Open Document | Open Filing | Aug 31, 2020 | Aug 28, 2020 | 001-39469 | |
| 3 | Open Document | Open Filing | Aug 25, 2020 | Aug 25, 2020 | 001-39469 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 21, 2020 | May 20, 2020 | 000-51018 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 11, 2019 | Feb 11, 2019 | 000-51018 |
| 3 | Open Document | Open Filing | Nov 15, 2018 | Nov 15, 2018 | 001-38744 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 17, 2018 | May 16, 2018 | 000-51018 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 7, 2017 | Feb 3, 2017 | 000-51018 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 2, 2016 | Jan 29, 2016 | 000-51018 |
| 4 | Open Document | Open Filing | TUAN FORM 4 1-2014 | Jan 30, 2014 | Jan 29, 2014 | 000-51018 |