| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Feb 2022 | 31 Jan 2022 | 001-12934 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Dec 2018 | 28 Dec 2018 | 001-12934 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Jan 2018 | 08 Jan 2018 | 001-12934 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Mar 2017 | 17 Mar 2017 | 001-12934 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Feb 2017 | 10 Feb 2017 | 001-12934 |