| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Dec 2021 | 15 Dec 2021 | 000-14703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 May 2021 | 19 May 2021 | 000-14703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Mar 2021 | 22 Mar 2021 | 000-14703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jan 2021 | 15 Jan 2021 | 000-14703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Mar 2020 | 23 Mar 2020 | 000-14703 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Jan 2020 | 15 Jan 2020 | 000-14703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2019 | 07 May 2019 | 000-14703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Mar 2019 | 25 Mar 2019 | 000-14703 |
| 5 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2019 | 31 Dec 2018 | 000-14703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Jan 2019 | 15 Jan 2019 | 000-14703 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Aug 2018 | 30 Aug 2018 | 000-14703 |
| 3 | Open Document | Open Filing | FORM 3 | 31 May 2018 | 22 May 2018 | 000-14703 |