| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 3/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 15, 2022 | Jun 21, 2021 | 001-39146 |
| 3 | Open Document | Open Filing | Jan 24, 2022 | Jun 21, 2021 | 001-39146 | |
| 4 | Open Document | Open Filing | FORM 4 | Sep 18, 2017 | Sep 14, 2017 | 000-22512 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 16, 2017 | Mar 14, 2017 | 000-22512 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 19, 2016 | Sep 15, 2016 | 000-22512 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 16, 2016 | Mar 14, 2016 | 000-22512 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 16, 2015 | Sep 15, 2015 | 000-22512 |
| 3 | Open Document | Open Filing | FORM 3 | Jun 1, 2015 | May 21, 2015 | 000-22512 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 7, 2014 | Oct 6, 2014 | 001-05571 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 10, 2014 | Mar 6, 2014 | 001-05571 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Feb 26, 2014 | Feb 19, 2014 | 001-05571 |