| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Mar 3, 2022 | Mar 1, 2022 | 000-19289 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Nov 22, 2021 | Nov 19, 2021 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 23, 2021 | Aug 20, 2021 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2021 | Feb 24, 2021 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 6, 2020 | Jul 1, 2020 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2020 | Mar 6, 2020 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 4, 2019 | Dec 3, 2019 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2019 | Mar 4, 2019 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 31, 2018 | May 30, 2018 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 6, 2018 | Mar 5, 2018 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 4, 2017 | Nov 30, 2017 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 16, 2017 | Mar 10, 2017 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 7, 2016 | Mar 3, 2016 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 6, 2015 | Jul 1, 2015 | 000-19289 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2015 | May 8, 2015 | 000-19289 |