| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 11, 2022 | May 10, 2022 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 10, 2022 | Feb 8, 2022 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 6, 2021 | Dec 2, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 21, 2021 | Sep 20, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 11, 2021 | Aug 5, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 21, 2021 | Jun 20, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 16, 2021 | Jun 14, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 14, 2021 | Jun 11, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 10, 2021 | Jun 7, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 8, 2021 | Jun 8, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 12, 2021 | May 11, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 12, 2021 | Feb 9, 2021 | 001-39256 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 18, 2020 | Nov 17, 2020 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 4, 2020 | Jul 27, 2020 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 13, 2020 | May 12, 2020 | 001-39256 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 14, 2020 | Feb 11, 2020 | 000-53501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 14, 2019 | Nov 12, 2019 | 000-53501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 24, 2019 | Sep 20, 2019 | 000-53501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 5, 2019 | Aug 1, 2019 | 000-53501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 24, 2019 | Jun 20, 2019 | 000-53501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 20, 2019 | Apr 15, 2019 | 000-53501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 22, 2019 | Mar 20, 2019 | 000-53501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 8, 2019 | Feb 7, 2019 | 000-53501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 21, 2018 | Dec 20, 2018 | 000-53501 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 15, 2018 | Nov 13, 2018 | 000-53501 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 25, 2018 | Sep 20, 2018 | 000-53501 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 13, 2018 | Aug 9, 2018 | 000-53501 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 13, 2018 | Jul 1, 2018 | 000-53501 |