| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 30 Aug 2021 | 30 Aug 2021 | 000-56065 | |
| 4 | Open Document | Open Filing | 17 Nov 2020 | 17 Nov 2020 | 000-56065 | |
| 4 | Open Document | Open Filing | 23 Oct 2020 | 22 Oct 2020 | 000-56065 | |
| 4 | Open Document | Open Filing | 02 Oct 2020 | 30 Sep 2020 | 000-56065 | |
| 4 | Open Document | Open Filing | 05 May 2020 | 01 May 2020 | 000-56065 | |
| 4 | Open Document | Open Filing | 31 Mar 2020 | 30 Mar 2020 | 000-56065 | |
| 4 | Open Document | Open Filing | 03 Mar 2020 | 28 Feb 2020 | 000-56065 | |
| 4 | Open Document | Open Filing | 31 Jan 2020 | 29 Jan 2020 | 000-56065 | |
| 4 | Open Document | Open Filing | 23 Dec 2019 | 20 Dec 2019 | 000-56065 | |
| 4 | Open Document | Open Filing | 06 Nov 2019 | 24 Oct 2019 | 000-56065 | |
| 3 | Open Document | Open Filing | 06 Nov 2019 | 18 Jun 2019 | 000-56065 |