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