| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 26 May 2021 | 24 May 2021 | 000-08822 |
| 4 | Open Document | Open Filing | FORM 4 | 27 May 2020 | 20 May 2020 | 000-08822 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Nov 2019 | 01 Nov 2019 | 000-08822 |
| 3 | Open Document | Open Filing | FORM 3 | 05 Nov 2019 | 01 Nov 2019 | 000-08822 |