| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 20, 2024 | May 16, 2024 | 000-50796 | |
| 4 | Open Document | Open Filing | May 14, 2024 | May 10, 2024 | 000-50796 | |
| 4 | Open Document | Open Filing | May 12, 2023 | May 10, 2023 | 000-50796 | |
| 4 | Open Document | Open Filing | May 13, 2022 | May 11, 2022 | 000-50796 | |
| 4 | Open Document | Open Filing | May 14, 2021 | May 12, 2021 | 000-50796 | |
| 4/A | Open Document | Open Filing | Jun 11, 2020 | May 13, 2020 | 000-50796 | |
| 4 | Open Document | Open Filing | May 15, 2020 | May 13, 2020 | 000-50796 | |
| 4 | Open Document | Open Filing | May 10, 2019 | May 8, 2019 | 000-50796 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 13, 2018 | Aug 10, 2018 | 001-34831 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 9, 2018 | May 8, 2018 | 000-50796 |
| 3 | Open Document | Open Filing | FORM 3 | Mar 8, 2018 | Mar 1, 2018 | 000-50796 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 3, 2015 | Feb 2, 2015 | 001-34831 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 3, 2015 | Feb 2, 2015 | 001-32599 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Feb 3, 2015 | Feb 2, 2015 | 001-34831 |