| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 21 Aug 2023 | 17 Aug 2023 | 000-55908 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Aug 2023 | 23 Jun 2023 | 000-55908 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Sep 2022 | 25 Jul 2022 | 000-55908 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Aug 2022 | 22 Jul 2022 | 000-55908 |
| 4 | Open Document | Open Filing | FORM 4 | 25 May 2021 | 17 Nov 2016 | 000-55908 |
| 4 | Open Document | Open Filing | FORM 4 | 24 May 2021 | 21 May 2021 | 000-55908 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Dec 2020 | 18 Dec 2020 | 000-55908 |
| 3 | Open Document | Open Filing | FORM 3 | 08 Mar 2018 | 01 Mar 2018 | 000-55908 |