| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Jun 15, 2022 | Jun 14, 2022 | 001-09974 | |
| 4 | Open Document | Open Filing | Apr 14, 2022 | Apr 13, 2022 | 001-09974 | |
| 4 | Open Document | Open Filing | Mar 28, 2022 | Mar 24, 2022 | 001-09974 | |
| 4 | Open Document | Open Filing | Feb 15, 2022 | Feb 11, 2022 | 001-09974 | |
| 4 | Open Document | Open Filing | Jan 13, 2021 | Jan 11, 2021 | 001-09974 | |
| 4/A | Open Document | Open Filing | Feb 27, 2020 | Feb 24, 2020 | 001-09974 | |
| 4 | Open Document | Open Filing | Feb 26, 2020 | Feb 24, 2020 | 001-09974 | |
| 3 | Open Document | Open Filing | Jan 2, 2020 | Dec 23, 2019 | 001-09974 |