| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 11 May 2021 | 03 May 2021 | 001-38508 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Oct 2020 | 26 Oct 2020 | 001-38508 |
| 4 | Open Document | Open Filing | 12 Mar 2020 | 04 Feb 2020 | 001-38508 | |
| SC 13G | Open Document | Open Filing | SCHEDULE 13G | 13 Feb 2019 | ||
| 4 | Open Document | Open Filing | 4 | 27 Jul 2018 | 04 Jun 2018 | 001-38508 |
| 3 | Open Document | Open Filing | 3 | 29 May 2018 | 29 May 2018 | 001-38508 |