| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 29 Jun 2021 | 28 Jun 2021 | 000-54318 | |
| 4 | Open Document | Open Filing | 17 Feb 2021 | 02 Feb 2021 | 000-54318 | |
| 3 | Open Document | Open Filing | 17 Feb 2021 | 02 Feb 2021 | 000-54318 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Mar 2019 | 15 Mar 2019 | 001-37568 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Dec 2018 | 05 Mar 2018 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Aug 2018 | 14 Aug 2018 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Jun 2018 | 19 Jun 2018 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Mar 2018 | 01 Mar 2018 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2018 | 22 Feb 2018 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Feb 2018 | 01 Feb 2018 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jan 2018 | 02 Jan 2018 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Dec 2017 | 01 Dec 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Nov 2017 | 01 Nov 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Oct 2017 | 02 Oct 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Sep 2017 | 01 Sep 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Aug 2017 | 01 Aug 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2017 | 03 Jul 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2017 | 26 Apr 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2017 | 13 Mar 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Feb 2017 | 07 Feb 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Feb 2017 | 03 Feb 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2017 | 01 Feb 2017 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Dec 2016 | 01 Dec 2016 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Oct 2016 | 03 Oct 2016 | 001-37568 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Aug 2016 | 01 Aug 2016 | 001-37568 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Feb 2016 | 16 Feb 2016 | 001-37568 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Oct 2015 | 06 Oct 2015 | 001-37568 |
| 3 | Open Document | Open Filing | FORM 3 | 30 Sep 2015 | 30 Sep 2015 | 001-37568 |