| 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 9, 2022 | Mar 8, 2022 | 001-07221 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Sep 28, 2021 | Sep 24, 2021 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 14, 2021 | Sep 10, 2021 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 31, 2021 | Aug 27, 2021 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 25, 2021 | Jun 24, 2021 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 12, 2021 | May 10, 2021 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 14, 2021 | Apr 12, 2021 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 24, 2021 | Mar 22, 2021 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 16, 2021 | Mar 13, 2021 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2021 | Mar 8, 2021 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 4, 2020 | Nov 2, 2020 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 14, 2020 | Sep 10, 2020 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 31, 2020 | Aug 27, 2020 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 23, 2020 | Mar 22, 2020 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 17, 2020 | Mar 13, 2020 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2020 | Mar 8, 2020 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2020 | Feb 27, 2020 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 5, 2019 | Nov 1, 2019 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 12, 2019 | Sep 10, 2019 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 17, 2019 | Apr 15, 2019 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 26, 2019 | Mar 22, 2019 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 12, 2019 | Mar 8, 2019 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 5, 2019 | Feb 1, 2019 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 7, 2018 | Nov 5, 2018 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 2, 2018 | Nov 1, 2018 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 12, 2018 | Sep 10, 2018 | 001-07221 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 12, 2018 | Sep 10, 2018 | 001-07221 |