| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 4 | 17 Apr 2025 | 17 Apr 2025 | 000-20572 |
| 4 | Open Document | Open Filing | 4 | 18 Sep 2024 | 16 Sep 2024 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Sep 2023 | 11 Sep 2023 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Sep 2022 | 12 Sep 2022 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Sep 2021 | 13 Sep 2021 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Sep 2020 | 14 Sep 2020 | 000-20572 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2020 | 23 Mar 2020 | 001-04448 |
| 4 | Open Document | Open Filing | FORM 4 - | 05 Dec 2019 | 03 Dec 2019 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Sep 2019 | 16 Sep 2019 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 - | 02 Aug 2019 | 01 Aug 2019 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 08 Mar 2019 | 08 Mar 2019 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 22 Feb 2019 | 21 Feb 2019 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 07 Dec 2018 | 04 Dec 2018 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Sep 2018 | 17 Sep 2018 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 - | 13 Mar 2018 | 09 Mar 2018 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 23 Feb 2018 | 21 Feb 2018 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 08 Dec 2017 | 06 Dec 2017 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Sep 2017 | 18 Sep 2017 | 000-20572 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 02 May 2017 | 30 Apr 2017 | 000-20572 |
| 4 | Open Document | Open Filing | FORM 4 - | 24 Feb 2017 | 22 Feb 2017 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 09 Dec 2016 | 07 Dec 2016 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 23 Feb 2016 | 20 Feb 2016 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 04 Dec 2015 | 02 Dec 2015 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 24 Feb 2015 | 20 Feb 2015 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 05 Dec 2014 | 03 Dec 2014 | 001-09328 |
| 4 | Open Document | Open Filing | FORM 4 - | 21 Feb 2014 | 20 Feb 2014 | 001-09328 |