| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 09 Feb 2023 | 07 Feb 2023 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Jun 2022 | 01 Jun 2022 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 17 May 2022 | 17 May 2022 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Nov 2021 | 02 Nov 2021 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Aug 2021 | 03 Aug 2021 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 07 May 2021 | 06 May 2021 | 000-20728 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Feb 2021 | 29 Jan 2021 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Nov 2020 | 02 Nov 2020 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Oct 2020 | 29 Sep 2020 | 000-20728 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Nov 2019 | 07 Nov 2019 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 10 May 2019 | 08 May 2019 | 000-20728 |
| 4 | Open Document | Open Filing | FORM 4 | 11 May 2018 | 10 May 2018 | 000-20728 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Dec 2017 | 19 Dec 2017 | 000-20728 |