| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 09 Sep 2021 | 07 Sep 2021 | 001-08519 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Feb 2021 | 25 Jan 2021 | 001-08519 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Feb 2020 | 30 Jan 2020 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2020 | 30 Jan 2020 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2020 | 27 Jan 2020 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 May 2019 | 30 May 2019 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Feb 2019 | 28 Jan 2019 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 May 2018 | 29 May 2018 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2018 | 23 Feb 2018 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2018 | 25 Jan 2018 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jan 2017 | 26 Jan 2017 | 001-08519 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Nov 2016 | 07 Nov 2016 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Nov 2016 | 07 Nov 2016 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Aug 2016 | 08 Aug 2016 | 001-08519 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 26 May 2016 | 28 Jan 2016 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2016 | 28 Jan 2016 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Dec 2015 | 02 Dec 2015 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Aug 2015 | 17 Aug 2015 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Jan 2015 | 27 Jan 2015 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Dec 2014 | 12 Dec 2014 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2014 | 04 Jun 2014 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2014 | 30 May 2014 | 001-08519 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Feb 2014 | 31 Jan 2014 | 001-08519 |