| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Mar 2023 | 12 Oct 2021 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Jul 2021 | 13 Jul 2021 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 May 2021 | 19 May 2021 | 000-15946 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Apr 2021 | 13 Apr 2020 | 000-15946 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 16 Apr 2021 | 13 Apr 2020 | 000-15946 |