| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Apr 25, 2025 | Apr 24, 2025 | 001-34187 | |
| 4 | Open Document | Open Filing | Apr 29, 2024 | Apr 25, 2024 | 001-34187 | |
| 4 | Open Document | Open Filing | Apr 28, 2023 | Apr 27, 2023 | 001-34187 | |
| 4 | Open Document | Open Filing | Apr 29, 2022 | Apr 28, 2022 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 16, 2021 | Dec 14, 2021 | 001-08503 |
| 4 | Open Document | Open Filing | Apr 23, 2021 | Apr 22, 2021 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 23, 2021 | Feb 19, 2021 | 001-08503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 11, 2021 | Feb 9, 2021 | 001-08503 |
| 4 | Open Document | Open Filing | Apr 24, 2020 | Apr 23, 2020 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 19, 2020 | Feb 14, 2020 | 001-08503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 12, 2020 | Feb 11, 2020 | 001-08503 |
| 4 | Open Document | Open Filing | Apr 26, 2019 | Apr 25, 2019 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 19, 2019 | Feb 14, 2019 | 001-08503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 12, 2019 | Feb 8, 2019 | 001-08503 |
| 4 | Open Document | Open Filing | Apr 27, 2018 | Apr 26, 2018 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 13, 2018 | Feb 9, 2018 | 001-08503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2018 | Jan 31, 2018 | 001-08503 |
| 4 | Open Document | Open Filing | Jan 26, 2018 | Aug 28, 2017 | 001-34187 | |
| 4 | Open Document | Open Filing | May 1, 2017 | Apr 27, 2017 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 14, 2017 | Feb 10, 2017 | 001-08503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2017 | Jan 31, 2017 | 001-08503 |
| 4 | Open Document | Open Filing | May 2, 2016 | Apr 28, 2016 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 16, 2016 | Feb 11, 2016 | 001-08503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 9, 2016 | Feb 5, 2016 | 001-08503 |
| 4 | Open Document | Open Filing | Nov 24, 2015 | Nov 23, 2015 | 001-34187 | |
| 4 | Open Document | Open Filing | Apr 27, 2015 | Apr 23, 2015 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 13, 2015 | Mar 11, 2015 | 001-08503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2015 | Feb 6, 2015 | 001-08503 |
| 4 | Open Document | Open Filing | Dec 29, 2014 | Dec 26, 2014 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 13, 2014 | Jun 12, 2014 | 001-08503 |
| 4 | Open Document | Open Filing | Apr 25, 2014 | Apr 24, 2014 | 001-34187 | |
| 4 | Open Document | Open Filing | Apr 11, 2014 | Apr 10, 2014 | 001-34187 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2014 | Feb 5, 2014 | 001-08503 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 7, 2014 | Feb 5, 2014 | 001-08503 |