| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Mar 1, 2022 | Feb 28, 2022 | 001-11978 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 28, 2022 | Feb 24, 2022 | 001-11978 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 22, 2022 | Feb 18, 2022 | 001-11978 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 24, 2022 | Jan 21, 2022 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Feb 26, 2021 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 26, 2021 | Feb 24, 2021 | 001-11978 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2020 | Mar 9, 2020 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2020 | Mar 9, 2020 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2020 | Feb 26, 2020 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2020 | Feb 21, 2020 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 4, 2019 | May 31, 2019 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 1, 2019 | Feb 27, 2019 | 001-11978 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2019 | Feb 20, 2018 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 14, 2018 | Mar 13, 2018 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 26, 2018 | Feb 20, 2018 | 001-11978 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 24, 2017 | Feb 22, 2017 | 001-11978 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 2, 2016 | May 31, 2016 | 001-11978 |