| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 02 Nov 2021 | 01 Nov 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | 30 Sep 2021 | 29 Sep 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | 22 Mar 2021 | 22 Mar 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | 14 Jan 2021 | 13 Jan 2021 | 001-08061 | |
| 4 | Open Document | Open Filing | 03 Nov 2020 | 01 Nov 2019 | 001-08061 | |
| 4 | Open Document | Open Filing | 10 Jul 2020 | 08 Jul 2020 | 001-08061 | |
| 4 | Open Document | Open Filing | 02 Oct 2019 | 01 Oct 2019 | 001-08061 | |
| 4 | Open Document | Open Filing | 18 Jan 2019 | 16 Jan 2019 | 001-08061 | |
| 4 | Open Document | Open Filing | 11 Oct 2018 | 09 Oct 2018 | 001-08061 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 May 2018 | 18 May 2018 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 25 Jan 2017 | 25 Jan 2017 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Aug 2016 | 19 Aug 2016 | 001-08061 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2015 | 30 Apr 2015 | 001-08061 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 10 Apr 2015 | 08 Apr 2015 | 001-08061 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Dec 2014 | 16 Dec 2014 | 001-08061 |