| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 24 Nov 2021 | 23 Nov 2021 | 000-24657 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Apr 2018 | 02 Apr 2018 | 000-24657 |
| 3 | Open Document | Open Filing | FORM 3 | 13 Jul 2015 | 02 Jul 2015 | 000-24657 |