| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 04 Mar 2022 | 28 Feb 2022 | 000-55543 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Mar 2021 | 28 Feb 2021 | 000-55543 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Apr 2020 | 29 Feb 2020 | 000-55543 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Sep 2017 | 27 Oct 2016 | 000-55543 |
| 3 | Open Document | Open Filing | FORM 3 | 06 Sep 2017 | 30 Aug 2017 | 000-55543 |