| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Mar 29, 2022 | Mar 27, 2022 | 001-15259 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 18, 2022 | Mar 16, 2022 | 001-15259 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 17, 2022 | Mar 15, 2022 | 001-15259 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 31, 2021 | Mar 29, 2021 | 001-15259 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 30, 2021 | Mar 27, 2021 | 001-15259 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 18, 2021 | Mar 16, 2021 | 001-15259 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 17, 2021 | Mar 15, 2021 | 001-15259 |
| 3/A | Open Document | Open Filing | Feb 24, 2021 | Feb 12, 2021 | 001-15259 | |
| 3 | Open Document | Open Filing | FORM 3 | Feb 22, 2021 | Feb 12, 2021 | 001-15259 |