| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Mar 1, 2023 | Feb 28, 2023 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 23, 2023 | Feb 21, 2023 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | May 28, 2021 | May 26, 2021 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | May 28, 2020 | May 27, 2020 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 26, 2019 | Jul 24, 2019 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 2, 2018 | Jun 28, 2018 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 26, 2018 | Jan 24, 2018 | 000-20288 |
| 3 | Open Document | Open Filing | FORM 3 | Jan 26, 2018 | Jan 24, 2018 | 000-20288 |