| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | Jun 9, 2025 | Jun 9, 2025 | 000-55190 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 24, 2024 | Jun 21, 2024 | 000-55190 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 22, 2023 | Jun 21, 2023 | 000-55190 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 24, 2022 | Jun 22, 2022 | 000-55190 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 21, 2021 | Jun 17, 2021 | 000-55190 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 23, 2020 | Jun 19, 2020 | 000-55190 |
| 4 | Open Document | Open Filing | Jun 21, 2019 | Jun 21, 2019 | 000-55190 | |
| 3 | Open Document | Open Filing | Dec 27, 2018 | Dec 19, 2018 | 811-23405 | |
| 4 | Open Document | Open Filing | Jun 25, 2018 | Jun 22, 2018 | 000-55190 | |
| 3 | Open Document | Open Filing | Nov 16, 2017 | Nov 16, 2017 | 811-23310 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 27, 2017 | Jun 23, 2017 | 000-55190 |
| 3 | Open Document | Open Filing | Jun 2, 2017 | May 31, 2017 | 811-23260 | |
| 4 | Open Document | Open Filing | FORM 4 - | Jun 28, 2016 | Jun 24, 2016 | 000-55190 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 10, 2016 | Mar 3, 2016 | 811-23133 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 10, 2016 | Mar 3, 2016 | 811-23109 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 10, 2016 | Mar 3, 2016 | 811-23134 |
| 4 | Open Document | Open Filing | FORM 4 - | Jun 30, 2015 | Jun 26, 2015 | 000-55190 |
| 4 | Open Document | Open Filing | FORM 4 - | Jan 30, 2015 | Dec 12, 2014 | 000-55190 |
| 4 | Open Document | Open Filing | FORM 4 - | Aug 13, 2014 | Jun 13, 2014 | 000-55190 |
| 3 | Open Document | Open Filing | FORM 3 - | Apr 28, 2014 | Apr 28, 2014 | 000-55190 |