| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Jan 18, 2023 | Jan 17, 2023 | 001-08061 | |
| 4 | Open Document | Open Filing | Nov 2, 2021 | Nov 1, 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | Mar 17, 2021 | Mar 16, 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | Nov 3, 2020 | Nov 1, 2019 | 001-08061 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 18, 2018 | May 18, 2018 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 23, 2016 | Aug 19, 2016 | 001-08061 |