| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 May 2025 | 22 May 2025 | 000-27688 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Feb 2023 | 02 Feb 2023 | 001-38248 |
| 4 | Open Document | Open Filing | 19 Apr 2022 | 17 Mar 2022 | 001-38248 | |
| 4 | Open Document | Open Filing | 26 May 2020 | 29 Apr 2020 | 000-27688 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Jan 2015 | 12 Jan 2015 | 001-36533 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Mar 2014 | 10 Mar 2014 | 000-53298 |