| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 27, 2025 | May 22, 2025 | 000-27688 | |
| 4 | Open Document | Open Filing | Apr 11, 2025 | Apr 9, 2025 | 000-27688 | |
| 4 | Open Document | Open Filing | Jul 9, 2020 | Jul 8, 2020 | 000-27688 | |
| 4 | Open Document | Open Filing | May 26, 2020 | Apr 29, 2020 | 000-27688 | |
| 4 | Open Document | Open Filing | Nov 26, 2018 | Nov 21, 2018 | 000-27688 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 17, 2015 | Jul 9, 2015 | 000-27688 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 13, 2015 | Feb 12, 2015 | 000-27688 |