| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | null | Apr 25, 2025 | Apr 23, 2025 | 001-08061 |
| 4 | Open Document | Open Filing | Nov 2, 2021 | Nov 1, 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | Mar 16, 2021 | Mar 15, 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | Jan 13, 2021 | Jan 8, 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | Nov 3, 2020 | Nov 1, 2020 | 001-08061 | |
| 4 | Open Document | Open Filing | Aug 6, 2020 | Jul 31, 2020 | 001-08061 | |
| 4 | Open Document | Open Filing | Sep 24, 2019 | Sep 23, 2019 | 001-08061 | |
| 4 | Open Document | Open Filing | Sep 19, 2019 | Sep 18, 2019 | 001-08061 | |
| 4 | Open Document | Open Filing | Feb 1, 2019 | Jan 28, 2018 | 001-08061 | |
| 4 | Open Document | Open Filing | Dec 17, 2018 | Dec 13, 2018 | 001-08061 | |
| 4 | Open Document | Open Filing | Dec 17, 2018 | Dec 14, 2018 | 001-08061 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 18, 2018 | May 18, 2018 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 23, 2016 | Aug 19, 2016 | 001-08061 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2015 | Apr 30, 2015 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 8, 2015 | Apr 6, 2015 | 001-08061 |