| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 5, 2023 | May 4, 2023 | 001-11083 | |
| 4 | Open Document | Open Filing | May 6, 2022 | May 5, 2022 | 001-11083 | |
| 4 | Open Document | Open Filing | May 10, 2021 | May 6, 2021 | 001-11083 | |
| 4 | Open Document | Open Filing | May 11, 2020 | May 7, 2020 | 001-11083 | |
| 4 | Open Document | Open Filing | 4 | May 13, 2019 | May 9, 2019 | 001-11083 |
| 4 | Open Document | Open Filing | May 11, 2018 | May 10, 2018 | 001-11083 | |
| 4 | Open Document | Open Filing | May 11, 2017 | May 9, 2017 | 001-11083 | |
| 4 | Open Document | Open Filing | May 4, 2016 | May 3, 2016 | 001-11083 | |
| 4 | Open Document | Open Filing | May 7, 2015 | May 5, 2015 | 001-11083 | |
| 4 | Open Document | Open Filing | Nov 3, 2014 | Oct 31, 2014 | 001-11083 | |
| 4 | Open Document | Open Filing | Feb 4, 2014 | Feb 3, 2014 | 001-11083 | |
| 3 | Open Document | Open Filing | Jan 9, 2014 | Jan 1, 2014 | 001-11083 |