| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Apr 2, 2024 | Mar 30, 2024 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Sep 21, 2023 | Sep 21, 2023 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Jul 25, 2023 | Jul 21, 2023 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | May 26, 2023 | May 25, 2023 | 000-03905 |
| 4/A | Open Document | Open Filing | AMENDED STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Jun 28, 2022 | May 25, 2022 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | May 26, 2022 | May 25, 2022 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 10, 2021 | Jun 8, 2021 | 000-03905 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 16, 2020 | Nov 6, 2020 | 000-03905 |