| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jun 3, 2022 | Jun 1, 2022 | 000-14798 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 4, 2021 | Jun 2, 2021 | 000-14798 |
| 4 | Open Document | Open Filing | FORM 4 | May 26, 2021 | May 24, 2021 | 000-14798 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 3, 2020 | Jun 1, 2020 | 000-14798 |
| 3 | Open Document | Open Filing | FORM 3 | May 27, 2020 | May 21, 2020 | 000-14798 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 23, 2019 | Aug 22, 2019 | 000-14798 |
| 3 | Open Document | Open Filing | FORM 3 | Dec 10, 2018 | Nov 27, 2018 | 000-14798 |