| 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 | 17 Aug 2022 | 15 Aug 2022 | 001-07109 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2021 | 14 May 2021 | 001-07109 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Aug 2020 | 12 Aug 2020 | 001-07109 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2019 | 26 Apr 2019 | 001-07109 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Aug 2018 | 13 Aug 2018 | 001-07109 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jul 2015 | 16 Jul 2015 | 001-07109 |