| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 31, 2024 | Jan 29, 2024 | 000-50626 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 3, 2023 | Jun 30, 2023 | 000-50626 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 16, 2022 | Jun 16, 2022 | 000-31141 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 16, 2022 | Jun 14, 2022 | 000-50626 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 10, 2021 | Sep 7, 2021 | 000-31141 |
| 3 | Open Document | Open Filing | FORM 3 | Sep 10, 2021 | Sep 7, 2021 | 000-31141 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 17, 2021 | Jun 15, 2021 | 000-50626 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 21, 2020 | Dec 17, 2020 | 000-50626 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 21, 2020 | Dec 17, 2020 | 000-50626 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 9, 2020 | Mar 5, 2020 | 001-39244 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 16, 2020 | Jan 16, 2020 | 000-21429 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 20, 2019 | Dec 18, 2019 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 14, 2019 | Mar 12, 2019 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 17, 2019 | Jan 15, 2019 | 000-21429 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 25, 2018 | Jul 23, 2018 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 14, 2018 | Jun 13, 2018 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 11, 2018 | May 8, 2018 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 10, 2018 | May 8, 2018 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 18, 2017 | Jan 14, 2017 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 20, 2016 | Jan 19, 2016 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 19, 2016 | Jan 14, 2016 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 21, 2015 | Jan 20, 2015 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 20, 2015 | Jan 14, 2015 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 24, 2014 | Jan 22, 2014 | 000-21429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 16, 2014 | Jan 14, 2014 | 000-21429 |