| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jul 23, 2021 | Jul 21, 2021 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 16, 2021 | Jul 14, 2021 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 2, 2021 | Feb 28, 2021 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 21, 2020 | Dec 17, 2020 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 18, 2020 | Dec 16, 2020 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 3, 2020 | Feb 28, 2020 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 2, 2020 | Feb 27, 2020 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 10, 2020 | Feb 7, 2020 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 4, 2019 | Dec 2, 2019 | 000-27756 |
| 3/A | Open Document | Open Filing | FORM 3/A | Dec 4, 2019 | Feb 19, 2019 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2019 | Feb 28, 2019 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 4, 2019 | Feb 28, 2019 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 1, 2019 | Feb 27, 2019 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 28, 2019 | Feb 26, 2019 | 000-27756 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 19, 2019 | Feb 14, 2019 | 000-27756 |
| 3 | Open Document | Open Filing | FORM 3 | Feb 19, 2019 | Feb 19, 2019 | 000-27756 |