| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 12 Dec 2022 | 08 Dec 2022 | 000-20574 | |
| 4 | Open Document | Open Filing | FORM 4 - | 10 Dec 2021 | 09 Dec 2021 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 12 Nov 2021 | 10 Nov 2021 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 12 Aug 2021 | 11 Aug 2021 | 000-20574 |
| 3/A | Open Document | Open Filing | FORM 3/A - | 04 Jun 2020 | 14 Dec 2016 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 09 Mar 2020 | 06 Mar 2020 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 07 Nov 2019 | 06 Nov 2019 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 08 Aug 2019 | 06 Aug 2019 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 13 May 2019 | 13 May 2019 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 27 Feb 2019 | 25 Feb 2019 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 24 Aug 2018 | 22 Aug 2018 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 03 May 2018 | 02 May 2018 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 09 Nov 2017 | 08 Nov 2017 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 17 Aug 2017 | 17 Aug 2017 | 000-20574 |
| 3 | Open Document | Open Filing | FORM 3 - | 27 Dec 2016 | 14 Dec 2016 | 000-20574 |