| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Mar 2022 | 25 Mar 2022 | 001-36467 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jun 2021 | 07 Jun 2021 | 001-36467 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 May 2021 | 10 May 2021 | 001-36467 |
| 4 | Open Document | Open Filing | 06 Jul 2020 | 01 Jul 2020 | 001-13906 | |
| 4 | Open Document | Open Filing | 4 | 10 Jun 2020 | 08 Jun 2020 | 001-36467 |
| 4 | Open Document | Open Filing | 03 Jul 2019 | 01 Jul 2019 | 001-13906 | |
| 4 | Open Document | Open Filing | 4 | 12 Jun 2019 | 10 Jun 2019 | 001-36467 |
| 4 | Open Document | Open Filing | 07 Dec 2018 | 04 Dec 2018 | 001-13906 | |
| 3 | Open Document | Open Filing | 12 Jul 2018 | 11 Jul 2018 | 001-13906 | |
| 4 | Open Document | Open Filing | 4 | 14 Jun 2018 | 12 Jun 2018 | 001-36467 |
| 3 | Open Document | Open Filing | 3 | 14 Jun 2018 | 12 Jun 2018 | 001-36467 |
| 4 | Open Document | Open Filing | 05 Jan 2015 | 01 Jan 2015 | 000-24452 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Sep 2014 | 26 Sep 2014 | 000-24452 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 Aug 2014 | 25 Aug 2014 | 000-24452 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 25 Oct 2013 | 17 Oct 2013 | 001-35094 |