| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | Jul 24, 2025 | Jul 23, 2025 | 000-06253 |
| 4 | Open Document | Open Filing | 4 | Mar 6, 2025 | Mar 4, 2025 | 000-06253 |
| 4 | Open Document | Open Filing | 4 | Mar 4, 2025 | Feb 28, 2025 | 000-06253 |
| 4 | Open Document | Open Filing | 4 | Feb 25, 2025 | Feb 23, 2025 | 000-06253 |
| 4 | Open Document | Open Filing | 4 | Jan 22, 2025 | Jan 19, 2025 | 000-06253 |
| 4 | Open Document | Open Filing | 4 | Apr 23, 2024 | Apr 21, 2024 | 000-06253 |
| 4 | Open Document | Open Filing | 4 | Mar 8, 2024 | Mar 6, 2024 | 000-06253 |
| 4 | Open Document | Open Filing | 4 | Mar 1, 2024 | Feb 28, 2024 | 000-06253 |
| 4 | Open Document | Open Filing | 4 | Feb 27, 2024 | Feb 23, 2024 | 000-06253 |
| 4 | Open Document | Open Filing | 4 | Jan 23, 2024 | Jan 19, 2024 | 000-06253 |
| 4 | Open Document | Open Filing | Apr 25, 2023 | Apr 21, 2023 | 000-06253 | |
| 4 | Open Document | Open Filing | Feb 28, 2023 | Feb 26, 2023 | 000-06253 | |
| 4 | Open Document | Open Filing | Feb 27, 2023 | Feb 23, 2023 | 000-06253 | |
| 4 | Open Document | Open Filing | Jan 23, 2023 | Jan 19, 2023 | 000-06253 | |
| 4 | Open Document | Open Filing | Dec 20, 2022 | Dec 16, 2022 | 000-06253 | |
| 4 | Open Document | Open Filing | Apr 25, 2022 | Apr 21, 2022 | 000-06253 | |
| 4 | Open Document | Open Filing | Mar 1, 2022 | Feb 26, 2022 | 000-06253 | |
| 4 | Open Document | Open Filing | Feb 25, 2022 | Feb 23, 2022 | 000-06253 | |
| 4 | Open Document | Open Filing | Jan 26, 2022 | Jan 24, 2022 | 000-06253 | |
| 4 | Open Document | Open Filing | Dec 17, 2021 | Dec 16, 2021 | 000-06253 | |
| 4 | Open Document | Open Filing | Apr 23, 2021 | Apr 21, 2021 | 000-06253 | |
| 4 | Open Document | Open Filing | Mar 2, 2021 | Feb 26, 2021 | 000-06253 | |
| 4 | Open Document | Open Filing | Jan 22, 2021 | Jan 20, 2021 | 000-06253 | |
| 4 | Open Document | Open Filing | Jan 21, 2021 | Jan 18, 2021 | 000-06253 | |
| 4 | Open Document | Open Filing | Dec 18, 2020 | Dec 16, 2020 | 000-06253 | |
| 4 | Open Document | Open Filing | Feb 28, 2020 | Feb 26, 2020 | 000-06253 | |
| 4 | Open Document | Open Filing | Jan 23, 2020 | Jan 21, 2020 | 000-06253 | |
| 4 | Open Document | Open Filing | Jan 22, 2020 | Jan 17, 2020 | 000-06253 | |
| 4 | Open Document | Open Filing | Dec 18, 2019 | Dec 16, 2019 | 000-06253 | |
| 4 | Open Document | Open Filing | Feb 28, 2019 | Feb 26, 2019 | 000-06253 | |
| 4/A | Open Document | Open Filing | Feb 20, 2019 | Jan 18, 2019 | 000-06253 | |
| 4 | Open Document | Open Filing | Jan 23, 2019 | Jan 18, 2019 | 000-06253 | |
| 4 | Open Document | Open Filing | Jan 18, 2019 | Jan 17, 2019 | 000-06253 | |
| 4 | Open Document | Open Filing | Jan 17, 2019 | Jan 16, 2019 | 000-06253 | |
| 4 | Open Document | Open Filing | Oct 30, 2018 | Oct 28, 2018 | 000-06253 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 23, 2018 | Jan 19, 2018 | 000-06253 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 22, 2018 | Jan 18, 2018 | 000-06253 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 19, 2018 | Jan 17, 2018 | 000-06253 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 3, 2018 | Dec 29, 2017 | 000-06253 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 30, 2017 | Oct 30, 2017 | 000-06253 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 10, 2017 | Jan 19, 2017 | 000-06253 |
| 3/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 10, 2017 | Jan 3, 2017 | 000-06253 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 20, 2017 | Jan 19, 2017 | 000-06253 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 19, 2017 | Jan 17, 2017 | 000-06253 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 13, 2017 | Jan 3, 2017 | 000-06253 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 20, 2016 | Jan 19, 2016 | 000-06253 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 3, 2015 | Oct 28, 2015 | 000-06253 |
| 4 | Open Document | Open Filing | Sep 25, 2015 | Sep 15, 2015 | 000-06253 | |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 24, 2015 | Sep 15, 2015 | 000-06253 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 27, 2015 | May 23, 2015 | 000-13163 |
| 3/A | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2015 | Nov 16, 2012 | 000-13163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2015 | May 20, 2015 | 000-13163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 21, 2015 | May 20, 2015 | 000-13163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 19, 2015 | May 16, 2015 | 000-13163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 28, 2015 | Apr 24, 2015 | 000-13163 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 24, 2015 | Mar 31, 2015 | 000-13163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 27, 2014 | May 23, 2014 | 000-13163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 22, 2014 | May 20, 2014 | 000-13163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 21, 2014 | May 18, 2014 | 000-13163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 19, 2014 | May 16, 2014 | 000-13163 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 28, 2014 | Apr 25, 2014 | 000-13163 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 28, 2014 | Mar 31, 2014 | 000-13163 |