| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 03 Jun 2021 | 01 Jun 2021 | 000-05534 | |
| 4 | Open Document | Open Filing | 08 Jul 2020 | 06 Jul 2020 | 000-05534 | |
| 4 | Open Document | Open Filing | 13 Mar 2020 | 12 Mar 2020 | 000-05534 | |
| 4 | Open Document | Open Filing | 13 Nov 2019 | 12 Nov 2019 | 000-05534 | |
| 4 | Open Document | Open Filing | 14 May 2019 | 13 May 2019 | 000-05534 | |
| 3 | Open Document | Open Filing | 07 Dec 2018 | 07 Dec 2018 | 000-05534 |