| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | FORM 4/A | May 15, 2025 | May 13, 2025 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 15, 2025 | May 13, 2025 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 5, 2024 | Dec 5, 2024 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 23, 2024 | May 21, 2024 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 17, 2023 | May 16, 2023 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 13, 2022 | May 12, 2022 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 13, 2021 | May 11, 2021 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 13, 2020 | May 12, 2020 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 16, 2019 | May 14, 2019 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 16, 2018 | May 15, 2018 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 16, 2017 | May 16, 2017 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 24, 2016 | May 24, 2016 | 000-18953 |
| 4/A | Open Document | Open Filing | FORM 4/A | Mar 3, 2016 | May 19, 2015 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2015 | May 19, 2015 | 000-18953 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2014 | May 20, 2014 | 000-18953 |