| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 21 Dec 2022 | 15 Dec 2022 | 000-55569 |
| 4 | Open Document | Open Filing | FORM 4 | 28 May 2021 | 12 May 2021 | 000-55569 |
| 5 | Open Document | Open Filing | FORM 5 | 10 Oct 2017 | 31 Jul 2017 | 000-55569 |
| 3 | Open Document | Open Filing | FORM 3 | 15 Jan 2016 | 21 May 2014 | 000-55569 |