| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jan 26, 2022 | Jan 24, 2022 | 001-16427 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 9, 2021 | Aug 5, 2021 | 001-16427 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 9, 2021 | Apr 8, 2021 | 001-16427 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 31, 2021 | Mar 29, 2021 | 001-16427 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 4, 2020 | Sep 4, 2020 | 001-16427 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 10, 2020 | Aug 6, 2020 | 001-16427 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 31, 2020 | Mar 29, 2020 | 001-16427 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 28, 2020 | Jan 24, 2020 | 001-16427 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 6, 2020 | Jan 2, 2020 | 001-16427 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 29, 2019 | Aug 28, 2019 | 001-16427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2019 | Mar 29, 2019 | 001-16427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2019 | Feb 22, 2019 | 001-16427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 16, 2019 | Jan 15, 2019 | 001-16427 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 14, 2018 | Mar 29, 2018 | 001-16427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 2, 2018 | Mar 29, 2018 | 001-16427 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2018 | Feb 23, 2018 | 001-16427 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 12, 2018 | Feb 1, 2018 | 001-16427 |