| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Sep 2022 | 23 Sep 2022 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Mar 2022 | 04 Mar 2022 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Feb 2021 | 28 Jan 2021 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 31 Aug 2020 | 27 Aug 2020 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Aug 2020 | 13 Aug 2020 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Mar 2018 | 09 Mar 2018 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Nov 2017 | 10 Nov 2017 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Aug 2017 | 21 Aug 2017 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Jul 2016 | 01 Jul 2016 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Dec 2015 | 16 Dec 2015 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Nov 2015 | 20 Nov 2015 | 001-34767 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Aug 2014 | 14 Aug 2014 | 001-34767 |