| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Oct 28, 2021 | Sep 9, 2021 | 001-32954 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 28, 2016 | Jul 21, 2016 | 001-32954 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 24, 2015 | Apr 22, 2015 | 001-32954 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 27, 2015 | Feb 25, 2015 | 001-32954 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | Feb 17, 2015 | Dec 31, 2014 | 001-32954 |