| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 28 Feb 2023 | 26 Feb 2023 | 000-06253 | |
| 4 | Open Document | Open Filing | 27 Feb 2023 | 23 Feb 2023 | 000-06253 | |
| 4 | Open Document | Open Filing | 23 Jan 2023 | 19 Jan 2023 | 000-06253 | |
| 4 | Open Document | Open Filing | 22 Nov 2022 | 22 Nov 2022 | 000-06253 | |
| 3 | Open Document | Open Filing | 11 Mar 2022 | 01 Mar 2022 | 000-06253 | |
| 4 | Open Document | Open Filing | FORM 4 | 20 Apr 2018 | 20 Apr 2018 | 000-28312 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jan 2018 | 26 Jan 2018 | 000-28312 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jan 2018 | 17 Jan 2018 | 000-28312 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jan 2017 | 26 Jan 2017 | 000-28312 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jan 2017 | 18 Jan 2017 | 000-28312 |