| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 9, 2022 | Jun 7, 2022 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 8, 2022 | Mar 4, 2022 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 17, 2022 | Feb 15, 2022 | 000-15386 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Jan 21, 2022 | Dec 31, 2021 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 22, 2021 | Dec 20, 2021 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 25, 2021 | Aug 24, 2021 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 11, 2021 | May 7, 2021 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 5, 2021 | May 4, 2021 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 3, 2021 | Apr 29, 2021 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 29, 2021 | Mar 26, 2021 | 000-15386 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Jan 21, 2021 | Jan 15, 2021 | 000-15386 |