| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 May 2025 | 22 May 2025 | 000-27688 |
| 4 | Open Document | Open Filing | 05 May 2021 | 30 Apr 2021 | 000-27688 | |
| 4 | Open Document | Open Filing | 26 May 2020 | 29 Apr 2020 | 000-27688 | |
| 4 | Open Document | Open Filing | 18 Mar 2019 | 18 Mar 2019 | 000-27688 | |
| 4 | Open Document | Open Filing | 29 Nov 2018 | 18 Oct 2018 | 000-27688 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Jul 2015 | 09 Jul 2015 | 000-27688 |