| 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 | Sep 8, 2021 | Sep 6, 2021 | 001-00035 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Jul 29, 2021 | Jul 28, 2021 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 23, 2021 | Mar 19, 2021 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2021 | Mar 1, 2021 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 2, 2021 | Feb 26, 2021 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 12, 2021 | Feb 10, 2021 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 15, 2020 | Sep 11, 2020 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 9, 2020 | Sep 6, 2020 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 4, 2020 | Sep 3, 2020 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 30, 2020 | Jul 28, 2020 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 11, 2020 | Jun 9, 2020 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2020 | Mar 2, 2020 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2020 | Feb 26, 2020 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 11, 2020 | Feb 10, 2020 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 12, 2019 | Sep 11, 2019 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 10, 2019 | Sep 6, 2019 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 30, 2019 | Jul 28, 2019 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 25, 2019 | Jul 24, 2019 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 21, 2019 | Mar 19, 2019 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 4, 2019 | Feb 28, 2019 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 12, 2019 | Feb 10, 2019 | 001-00035 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 13, 2018 | Sep 11, 2018 | 001-00035 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 11, 2018 | Sep 7, 2018 | 001-00035 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Feb 29, 2016 | Feb 17, 2016 | 001-35756 |