| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | Apr 17, 2025 | Apr 17, 2025 | 000-20572 |
| 4 | Open Document | Open Filing | 4 | Sep 18, 2024 | Sep 16, 2024 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 13, 2023 | Sep 11, 2023 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 13, 2022 | Sep 12, 2022 | 000-20572 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Dec 21, 2021 | Dec 13, 2021 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2021 | May 20, 2021 | 001-36449 |
| 4 | Open Document | Open Filing | FORM 4 | May 26, 2020 | May 21, 2020 | 001-36449 |
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2019 | May 16, 2019 | 001-36449 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 29, 2018 | Oct 25, 2018 | 001-36449 |
| 3 | Open Document | Open Filing | FORM 3 | Oct 29, 2018 | Oct 25, 2018 | 001-36449 |