| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 14 May 2025 | 13 May 2025 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Jun 2023 | 13 Jun 2023 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Mar 2023 | 07 Mar 2023 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 03 May 2022 | 03 May 2022 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Nov 2018 | 14 Nov 2018 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 14 May 2018 | 11 May 2018 | 000-20852 |
| 4 | Open Document | Open Filing | FORM 4 | 25 May 2017 | 24 May 2017 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2015 | 25 Feb 2015 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2015 | 19 Feb 2015 | 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 | 07 Mar 2014 | 07 Mar 2014 | 000-20852 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Feb 2014 | 17 Feb 2014 | 000-20852 |