| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2025 | 13 May 2025 | 000-14690 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 May 2024 | 14 May 2024 | 000-14690 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2023 | 09 May 2023 | 000-14690 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2022 | 10 May 2022 | 000-14690 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Dec 2021 | 20 Dec 2021 | 000-14690 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2021 | 11 May 2021 | 000-14690 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2021 | 11 May 2021 | 000-14690 |
| 4 | Open Document | Open Filing | FORM 4 | 17 May 2019 | 16 May 2019 | 001-34365 |
| 4 | Open Document | Open Filing | FORM 4 | 18 May 2018 | 17 May 2018 | 001-34365 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Nov 2017 | 08 Nov 2017 | 001-34365 |
| 4 | Open Document | Open Filing | FORM 4 | 12 May 2017 | 10 May 2017 | 001-34365 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Nov 2016 | 21 Nov 2016 | 001-34365 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Dec 2015 | 08 Dec 2015 | 001-34365 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Nov 2014 | 21 Nov 2014 | 001-34365 |