| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Feb 15, 2023 | ||
| 4 | Open Document | Open Filing | Dec 14, 2022 | Dec 13, 2022 | 000-32917 | |
| 4 | Open Document | Open Filing | Dec 9, 2022 | Dec 7, 2022 | 000-32917 | |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Mar 21, 2022 | ||
| 4 | Open Document | Open Filing | Mar 17, 2022 | Mar 15, 2022 | 000-32917 | |
| 4 | Open Document | Open Filing | Aug 6, 2021 | Aug 4, 2021 | 000-32917 | |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Aug 6, 2021 | ||
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Aug 6, 2021 | ||
| 4 | Open Document | Open Filing | Jun 15, 2020 | Jun 12, 2020 | 000-32917 | |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Mar 31, 2020 | ||
| 4/A | Open Document | Open Filing | Mar 30, 2020 | Mar 26, 2020 | 000-32917 | |
| 4 | Open Document | Open Filing | Mar 27, 2020 | Mar 26, 2020 | 000-32917 | |
| 4 | Open Document | Open Filing | Nov 25, 2019 | Jul 15, 2019 | 000-32917 | |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Feb 20, 2019 | ||
| 4 | Open Document | Open Filing | FORM 4 | Nov 13, 2018 | Nov 9, 2018 | 000-32917 |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Jan 22, 2018 | ||
| 3 | Open Document | Open Filing | FORM 3 | Jan 19, 2018 | Dec 31, 2017 | 000-32917 |
| SC 13G/A | Open Document | Open Filing | SCHEDULE 13G/A | Jan 5, 2017 | ||
| SC 13G | Open Document | Open Filing | SCHEDULE 13G | Apr 22, 2016 |