| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 13 Aug 2021 | 13 Aug 2021 | 001-11981 | |
| 4 | Open Document | Open Filing | 08 Apr 2021 | 08 Apr 2021 | 001-11981 | |
| 4 | Open Document | Open Filing | 06 Jan 2021 | 31 Dec 2020 | 001-11981 | |
| 4 | Open Document | Open Filing | 06 Oct 2020 | 01 Oct 2020 | 001-11981 | |
| 4 | Open Document | Open Filing | 06 Jul 2020 | 02 Jul 2020 | 001-11981 | |
| 4 | Open Document | Open Filing | 07 Apr 2020 | 03 Apr 2020 | 001-11981 | |
| 3 | Open Document | Open Filing | 13 Mar 2020 | 28 Jan 2020 | 001-11981 |