| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 25 Sep 2023 | 18 Sep 2023 | 000-55586 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Jun 2022 | 25 Feb 2022 | 000-55586 |
| 3 | Open Document | Open Filing | FORM 3 | 27 Jun 2022 | 01 Jun 2020 | 000-55586 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Sep 2012 | 07 Sep 2012 | 000-27485 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Sep 2012 | 05 Sep 2012 | 000-27485 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Aug 2012 | 06 Aug 2012 | 000-27485 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jul 2012 | 02 Jul 2012 | 000-27485 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Jun 2012 | 06 Jun 2012 | 000-27485 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 May 2012 | 01 May 2012 | 000-27485 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Mar 2012 | 24 Jan 2012 | 000-27485 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Jan 2012 | 24 Jan 2012 | 000-27485 |