| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 3 | Open Document | Open Filing | 14 Jun 2023 | 23 Feb 2023 | 811-23808 | |
| 4 | Open Document | Open Filing | 07 Jul 2021 | 03 Jul 2021 | 000-31981 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Feb 2018 | 31 Jan 2018 | 000-31981 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Apr 2017 | 08 Nov 2016 | 000-31981 |
| 4 | Open Document | Open Filing | 15 Apr 2014 | 01 Feb 2013 | 000-31981 |