| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Oct 8, 2021 | Oct 6, 2021 | 001-32998 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 27, 2019 | Dec 18, 2019 | 001-32998 |
| 4/A | Open Document | Open Filing | FORM 4/A | May 31, 2019 | May 20, 2019 | 001-32998 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 22, 2019 | May 20, 2019 | 001-32998 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 21, 2017 | Dec 20, 2017 | 001-32998 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 21, 2017 | Aug 4, 2017 | 001-32998 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 25, 2016 | Aug 19, 2016 | 001-32998 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 16, 2016 | Jun 15, 2016 | 001-32998 |
| 3 | Open Document | Open Filing | FORM 3 | Jan 4, 2016 | Jan 1, 2016 | 001-32998 |