| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Oct 7, 2021 | Oct 5, 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 3, 2021 | Sep 1, 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 3, 2021 | Jul 30, 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 13, 2021 | Jul 9, 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 5, 2021 | Feb 3, 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 2, 2021 | Jan 29, 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 27, 2021 | Jan 25, 2021 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 18, 2020 | Nov 16, 2020 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 4, 2020 | Jan 31, 2020 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 5, 2019 | Jun 3, 2019 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 4, 2019 | Jan 31, 2019 | 000-26427 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 2, 2018 | Jul 31, 2018 | 000-26427 |
| 3 | Open Document | Open Filing | FORM 3 | Aug 2, 2018 | Jul 25, 2018 | 000-26427 |