| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 26 Nov 2025 | 24 Nov 2025 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 14 May 2025 | 14 May 2025 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Nov 2024 | 12 Nov 2024 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Sep 2023 | 14 Sep 2023 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Feb 2022 | 07 Feb 2022 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Feb 2021 | 25 Feb 2021 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Aug 2020 | 19 Aug 2020 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2019 | 13 May 2019 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Dec 2018 | 14 Dec 2018 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Nov 2017 | 07 Nov 2017 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Jun 2017 | 01 Jun 2017 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 May 2016 | 02 May 2016 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Dec 2014 | 09 Dec 2014 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Aug 2014 | 15 Aug 2014 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2014 | 19 May 2014 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Feb 2014 | 17 Feb 2014 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2013 | 15 Nov 2013 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Aug 2013 | 15 Aug 2013 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2012 | 15 Nov 2012 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Aug 2012 | 15 Aug 2012 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2012 | 24 May 2012 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2012 | 15 May 2012 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2012 | 15 Feb 2012 | 000-20852 |