| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 7, 2025 | May 5, 2025 | 000-18032 |
| 4 | Open Document | Open Filing | FORM 4 | May 9, 2024 | May 8, 2024 | 000-18032 |
| 4 | Open Document | Open Filing | FORM 4 | May 7, 2024 | May 6, 2024 | 000-18032 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 15, 2023 | Dec 14, 2023 | 000-18032 |
| 3 | Open Document | Open Filing | FORM 3 | Nov 16, 2023 | Nov 14, 2023 | 000-18032 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 3, 2022 | May 1, 2022 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 1, 2022 | Feb 26, 2022 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 16, 2022 | Feb 14, 2022 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 15, 2022 | Feb 11, 2022 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 14, 2022 | Jan 13, 2022 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 28, 2021 | Dec 26, 2021 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 11, 2021 | Aug 10, 2021 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 2, 2021 | Feb 26, 2021 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 16, 2021 | Feb 12, 2021 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 3, 2020 | Feb 28, 2020 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 2, 2020 | Feb 27, 2020 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 19, 2020 | Feb 14, 2020 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 18, 2020 | Feb 13, 2020 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 15, 2020 | Jan 13, 2020 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 30, 2019 | Dec 26, 2019 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 28, 2019 | Feb 26, 2019 | 001-08974 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 15, 2019 | Jan 13, 2019 | 001-08974 |
| 3 | Open Document | Open Filing | FORM 3 | Oct 26, 2018 | Oct 18, 2018 | 001-08974 |