| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 15 Aug 2022 | 22 Jul 2022 | 000-53754 | |
| 4 | Open Document | Open Filing | 24 Feb 2022 | 04 Feb 2022 | 000-53754 | |
| 4 | Open Document | Open Filing | 15 Nov 2021 | 15 Oct 2021 | 000-53754 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Jul 2019 | 05 Jul 2019 | 000-53754 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 May 2015 | 12 Mar 2015 | 000-53754 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 28 May 2015 | 12 Mar 2015 | 000-53754 |