| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4, 09-15-25 | Sep 15, 2025 | Sep 11, 2025 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 04-11-2025 | Apr 11, 2025 | Apr 9, 2025 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 8, 2025 | Apr 4, 2025 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 01-17-2025 | Jan 17, 2025 | Jan 15, 2025 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 01-07-2025 | Jan 7, 2025 | Jan 3, 2025 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 12-19-2024 | Dec 19, 2024 | Dec 17, 2024 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 12-05-2024 | Dec 5, 2024 | Dec 3, 2024 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 11-26-2024 | Nov 26, 2024 | Nov 25, 2024 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 11-21-2024 | Nov 21, 2024 | Nov 19, 2024 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 10-16-2024 | Oct 16, 2024 | Oct 14, 2024 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 30, 2024 | Aug 29, 2024 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 7, 2024 | Jun 5, 2024 | 000-15905 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 10, 2023 | Oct 5, 2023 | 000-15905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 23, 2023 | Aug 21, 2023 | 000-15905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 21, 2023 | Aug 17, 2023 | 000-15905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 1, 2023 | May 26, 2023 | 000-15905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 10, 2023 | Apr 6, 2023 | 000-15905 |
| 4 | Open Document | Open Filing | Dec 16, 2022 | Dec 14, 2022 | 000-15905 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 14, 2022 | Sep 14, 2022 | 811-22626 |
| 4 | Open Document | Open Filing | Sep 8, 2022 | Sep 6, 2022 | 000-15905 | |
| 4/A | Open Document | Open Filing | FORM 4/A | Jun 6, 2022 | Jun 6, 2022 | 000-15905 |
| 4/A | Open Document | Open Filing | FORM 4/A | Jun 6, 2022 | Jun 6, 2022 | 000-15905 |
| 4/A | Open Document | Open Filing | FORM 4/A | Jun 6, 2022 | Jun 6, 2022 | 000-15905 |
| 4/A | Open Document | Open Filing | FORM 4/A | Jun 6, 2022 | Jun 6, 2022 | 000-15905 |
| 4 | Open Document | Open Filing | May 13, 2022 | May 12, 2022 | 000-15905 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Mar 1, 2021 | 811-22942 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Mar 1, 2021 | 811-22941 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Mar 1, 2021 | 811-22940 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Mar 1, 2021 | 811-22367 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Mar 1, 2021 | 811-21730 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Mar 1, 2021 | 811-21528 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Mar 1, 2021 | 811-21527 |
| 4 | Open Document | Open Filing | May 1, 2020 | Apr 30, 2020 | 000-15905 | |
| 4 | Open Document | Open Filing | Nov 14, 2019 | Nov 14, 2019 | 000-15905 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 21, 2018 | Dec 20, 2018 | 811-22626 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 11, 2018 | Dec 10, 2018 | 811-22626 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 7, 2018 | Dec 6, 2018 | 811-22626 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 3, 2018 | Nov 30, 2018 | 811-22626 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 26, 2018 | Nov 23, 2018 | 811-22626 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 19, 2017 | May 19, 2017 | 000-15905 |
| 4 | Open Document | Open Filing | 4 | Oct 6, 2015 | Oct 5, 2015 | 001-35344 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 27, 2015 | Aug 24, 2015 | 000-15905 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 24, 2015 | Aug 20, 2015 | 000-15905 |
| 4 | Open Document | Open Filing | 4 | Jan 2, 2015 | Dec 31, 2014 | 001-35344 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 21, 2014 | Feb 20, 2014 | 811-22942 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 21, 2014 | Feb 20, 2014 | 811-22941 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 21, 2014 | Feb 20, 2014 | 811-22940 |
| 4 | Open Document | Open Filing | 4 | Feb 3, 2014 | Jan 31, 2014 | 001-35344 |
| 3 | Open Document | Open Filing | 3 | Feb 3, 2014 | Jan 31, 2014 | 001-35344 |