| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 14 May 2021 | 12 May 2021 | 001-11593 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 13 May 2021 | 11 May 2021 | 001-11593 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 12 May 2021 | 10 May 2021 | 001-11593 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Sep 2017 | 08 Sep 2017 | 001-11593 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2017 | 09 May 2017 | 001-11593 |