| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2025 | May 7, 2025 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 4, 2024 | May 30, 2024 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | May 18, 2023 | May 17, 2023 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 15, 2022 | Jun 15, 2022 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 11, 2021 | Jun 9, 2021 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2021 | May 19, 2021 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 9, 2021 | Mar 8, 2021 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | May 22, 2020 | May 20, 2020 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 12, 2019 | Dec 12, 2019 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 16, 2019 | Sep 12, 2019 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | May 17, 2019 | May 15, 2019 | 000-31977 |
| 4 | Open Document | Open Filing | FORM 4 | May 17, 2018 | May 16, 2018 | 000-31977 |
| 3 | Open Document | Open Filing | FORM 3 | Dec 8, 2017 | Dec 1, 2017 | 000-31977 |