| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Jul 2024 | 02 Jul 2024 | 000-11668 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Jun 2022 | 21 Jun 2022 | 000-11668 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Mar 2022 | 24 Feb 2022 | 000-11668 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Apr 2021 | 24 Mar 2021 | 000-11668 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Jun 2019 | 27 Feb 2019 | 000-11668 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Jul 2018 | 03 Jul 2018 | 000-11668 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jan 2017 | 18 Jan 2017 | 000-11668 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 25 Apr 2016 | 13 Jan 2015 | 000-11668 |
| 4 | Open Document | Open Filing | 23 Jan 2014 | 21 Jan 2014 | 000-11668 | |
| 3 | Open Document | Open Filing | 31 Jan 2013 | 30 Jan 2013 | 000-11668 |