| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 22 Feb 2022 | 18 Feb 2022 | 000-22182 | |
| 4 | Open Document | Open Filing | 08 Sep 2021 | 03 Sep 2021 | 000-21990 | |
| 4 | Open Document | Open Filing | 16 Jul 2021 | 31 Mar 2021 | 000-21990 | |
| 4 | Open Document | Open Filing | 29 Jan 2021 | 29 Jan 2021 | 000-22182 | |
| 4 | Open Document | Open Filing | 16 Dec 2020 | 16 Dec 2020 | 000-22182 | |
| 3 | Open Document | Open Filing | 31 Aug 2020 | 21 Aug 2020 | 000-22182 | |
| 3 | Open Document | Open Filing | 21 May 2020 | 11 May 2020 | 000-21990 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Nov 2017 | 31 Oct 2017 | 001-32839 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Apr 2017 | 28 Apr 2017 | 001-32839 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Nov 2016 | 31 Oct 2016 | 001-32839 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Jun 2016 | 02 Jun 2016 | 001-32839 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 May 2016 | 29 Apr 2016 | 001-32839 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Nov 2015 | 30 Oct 2015 | 001-32839 |
| 4 | Open Document | Open Filing | FORM 4 | 12 May 2015 | 11 May 2015 | 001-32839 |
| 4 | Open Document | Open Filing | FORM 4 | 01 May 2015 | 30 Apr 2015 | 001-32839 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Nov 2014 | 31 Oct 2014 | 001-32839 |
| 4 | Open Document | Open Filing | FORM 4 | 08 May 2014 | 06 May 2014 | 001-32839 |
| 4 | Open Document | Open Filing | FORM 4 | 01 May 2014 | 29 Apr 2014 | 001-32839 |