| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Jan 2023 | 01 Jan 2023 | 001-37353 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Sep 2020 | 10 Sep 2020 | 001-31392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Dec 2018 | 19 Dec 2018 | 001-31392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Mar 2018 | 15 Mar 2018 | 001-31392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Mar 2018 | 14 Mar 2018 | 001-31392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 Dec 2017 | 14 Dec 2017 | 001-31392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 Dec 2016 | 29 Dec 2016 | 001-31392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Jan 2016 | 05 Jan 2016 | 001-31392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Jan 2015 | 08 Jan 2015 | 001-31392 |
| 4 | Open Document | Open Filing | 27 Jun 2014 | 18 Jun 2014 | 000-53290 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Jun 2014 | 18 Jun 2014 | 001-31392 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Mar 2014 | 04 Mar 2014 | 001-31392 |
| 4 | Open Document | Open Filing | 23 Jan 2014 | 21 Jan 2014 | 000-53290 |