| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 18 Jan 2023 | 17 Jan 2023 | 001-08061 | |
| 4 | Open Document | Open Filing | 02 Nov 2021 | 01 Nov 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | 17 Mar 2021 | 16 Mar 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | 03 Nov 2020 | 01 Nov 2019 | 001-08061 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 May 2018 | 18 May 2018 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Aug 2016 | 19 Aug 2016 | 001-08061 |