| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 3, 2022 | Dec 31, 2021 | 001-10635 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 8, 2021 | Oct 6, 2021 | 001-10635 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 7, 2021 | Jul 2, 2021 | 001-10635 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 18, 2020 | Sep 17, 2020 | 001-10635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 12, 2020 | Jun 11, 2020 | 001-35498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 31, 2020 | Mar 27, 2020 | 001-10635 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 6, 2020 | Jan 31, 2020 | 001-35498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 23, 2019 | Sep 19, 2019 | 001-10635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 17, 2019 | Jun 13, 2019 | 001-35498 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 28, 2019 | Mar 26, 2019 | 001-35498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 24, 2018 | Sep 20, 2018 | 001-10635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 8, 2018 | Jun 7, 2018 | 001-35498 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 17, 2018 | Dec 27, 2017 | 001-35498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 25, 2017 | Sep 21, 2017 | 001-10635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 9, 2017 | Jun 8, 2017 | 001-35498 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 31, 2017 | Mar 30, 2017 | 001-35498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 26, 2016 | Sep 22, 2016 | 001-10635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 10, 2016 | Jun 9, 2016 | 001-35498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 18, 2015 | Sep 17, 2015 | 001-10635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 15, 2015 | Jun 11, 2015 | 001-35498 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 3, 2014 | Oct 31, 2014 | 001-10635 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 20, 2014 | Oct 16, 2014 | 001-10635 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 22, 2014 | Sep 18, 2014 | 001-10635 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 12, 2014 | Jun 10, 2014 | 001-35498 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 30, 2014 | Sep 26, 2013 | 001-35498 |