| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 17 Jul 2023 | 17 Jul 2023 | 000-54835 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Apr 2021 | 01 Apr 2021 | 000-54835 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Mar 2019 | 26 Feb 2019 | 000-54835 |
| 4 | Open Document | Open Filing | 4 | 11 Oct 2018 | 09 Oct 2018 | 000-54835 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Feb 2017 | 31 Jan 2017 | 000-54835 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 31 May 2016 | 26 May 2016 | 000-54835 |
| 3 | Open Document | Open Filing | INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES | 06 May 2016 | 28 Apr 2016 | 000-54835 |