| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 Jul 2021 | 28 Jul 2021 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Aug 2020 | 01 Aug 2020 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Aug 2019 | 01 Aug 2019 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Aug 2018 | 01 Aug 2018 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Feb 2018 | 16 Feb 2018 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Nov 2017 | 09 Nov 2017 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Aug 2017 | 03 Aug 2017 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Aug 2016 | 04 Aug 2016 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Aug 2016 | 01 Aug 2016 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Aug 2015 | 08 Aug 2015 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Aug 2015 | 30 Jul 2015 | 001-35368 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 May 2015 | 15 Dec 2014 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Dec 2014 | 15 Dec 2014 | 001-35368 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Aug 2014 | 31 Jul 2014 | 001-35368 |