| 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 | 08 Sep 2023 | 06 Sep 2023 | 000-03905 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | 08 Sep 2022 | 07 Sep 2022 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Sep 2021 | 08 Sep 2021 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Feb 2021 | 05 Feb 2021 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Sep 2020 | 11 Sep 2020 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Sep 2020 | 09 Sep 2020 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Sep 2019 | 11 Sep 2019 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2019 | 22 May 2019 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2018 | 23 May 2018 | 000-03905 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Aug 2017 | 04 Aug 2017 | 000-03905 |