| 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 24, 2021 | Nov 23, 2021 | 000-19289 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Nov 15, 2021 | Nov 12, 2021 | 000-19289 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Nov 10, 2021 | Nov 9, 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 | Dec 4, 2020 | Dec 2, 2020 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 17, 2020 | Sep 16, 2020 | 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 | May 15, 2018 | May 11, 2018 | 000-19289 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2018 | Mar 1, 2018 | 000-19289 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2018 | Mar 1, 2018 | 000-19289 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 13, 2017 | Nov 10, 2017 | 000-19289 |