| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 5 | Open Document | Open Filing | ANNUAL STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP | 14 Mar 2022 | 31 Dec 2021 | 001-08429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Aug 2017 | 18 Aug 2017 | 001-08429 |