| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Oct 2021 | 08 Jul 2021 | 000-55639 |
| 144 | Open Document | Open Filing | 144 | 05 Oct 2021 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jul 2021 | 23 Jul 2021 | 000-55639 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2021 | 01 Mar 2021 | 000-55639 |
| 4 | Open Document | Open Filing | 05 Feb 2019 | 11 Jan 2019 | 000-55639 | |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Jun 2017 | 27 Jun 2017 | 000-55639 |