| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Mar 7, 2022 | Mar 3, 2022 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 2, 2022 | Feb 1, 2022 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 13, 2021 | Dec 9, 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 22, 2021 | Nov 19, 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 17, 2021 | Nov 16, 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 16, 2021 | Nov 15, 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 7, 2021 | Sep 2, 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 21, 2021 | Jun 18, 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 7, 2021 | Apr 29, 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | May 19, 2021 | May 19, 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 8, 2021 | Mar 4, 2021 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 14, 2020 | Dec 10, 2020 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 24, 2020 | Nov 21, 2020 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 23, 2020 | Nov 19, 2020 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 17, 2020 | Nov 15, 2020 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 8, 2020 | Sep 3, 2020 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 19, 2020 | Jun 18, 2020 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 8, 2020 | Jun 4, 2020 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 9, 2020 | Mar 5, 2020 | 000-12247 |
| 4/A | Open Document | Open Filing | FORM 4/A | Jan 9, 2020 | Dec 12, 2019 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 13, 2019 | Dec 12, 2019 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 25, 2019 | Nov 21, 2019 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 18, 2019 | Nov 15, 2019 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 9, 2019 | Sep 5, 2019 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 20, 2019 | Jun 18, 2019 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 7, 2019 | Jun 6, 2019 | 000-12247 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 15, 2019 | Mar 7, 2019 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 10, 2018 | Dec 6, 2018 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 27, 2018 | Nov 23, 2018 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 19, 2018 | Nov 16, 2018 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 16, 2018 | Nov 15, 2018 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 7, 2018 | Sep 6, 2018 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 20, 2018 | Jun 18, 2018 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 8, 2018 | Jun 7, 2018 | 000-12247 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2018 | Mar 8, 2018 | 000-12247 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 7, 2018 | Feb 7, 2018 | 000-12247 |