| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 3, 2023 | Feb 1, 2023 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 28, 2022 | Sep 22, 2022 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 2, 2022 | Feb 1, 2022 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 3, 2021 | Feb 1, 2021 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 4, 2020 | Feb 3, 2020 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 8, 2019 | Feb 7, 2019 | 000-22345 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 26, 2018 | Apr 26, 2018 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 28, 2017 | Apr 26, 2017 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 23, 2016 | May 19, 2016 | 000-22345 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 29, 2016 | Apr 27, 2016 | 000-22345 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 29, 2016 | Apr 27, 2016 | 000-22345 |