| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 3, 2025 | Mar 3, 2025 | 000-26850 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 26, 2025 | Feb 24, 2025 | 000-26850 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 21, 2025 | Feb 15, 2025 | 000-26850 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 19, 2025 | Feb 15, 2025 | 000-26850 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 6, 2025 | Jan 2, 2025 | 000-26850 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 26, 2024 | Feb 14, 2024 | 000-26850 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 16, 2024 | Feb 14, 2024 | 000-26850 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 7, 2023 | Feb 14, 2023 | 000-26850 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 16, 2023 | Feb 14, 2023 | 000-26850 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 23, 2021 | Jul 21, 2021 | 000-26850 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 29, 2020 | Oct 27, 2020 | 000-26850 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 27, 2020 | Oct 26, 2020 | 000-26850 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 25, 2020 | Feb 21, 2020 | 000-26850 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 18, 2018 | Jul 16, 2018 | 000-26850 |
| 3 | Open Document | Open Filing | FORM 3 | Jul 17, 2018 | Jul 16, 2018 | 000-26850 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 20, 2018 | Feb 15, 2018 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 17, 2018 | Jan 15, 2018 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 3, 2017 | Aug 1, 2017 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 29, 2017 | Mar 28, 2017 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 13, 2017 | Feb 9, 2017 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 17, 2017 | Jan 15, 2017 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 16, 2016 | Feb 12, 2016 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 19, 2016 | Jan 15, 2016 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 9, 2015 | Feb 5, 2015 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 20, 2015 | Jan 15, 2015 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 11, 2014 | Dec 10, 2014 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 10, 2014 | Feb 6, 2014 | 001-08923 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 17, 2014 | Jan 15, 2014 | 001-08923 |