| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 22 Dec 2021 | 20 Dec 2021 | 001-07151 | |
| 4 | Open Document | Open Filing | 23 Sep 2021 | 21 Sep 2021 | 001-07151 | |
| 4 | Open Document | Open Filing | 23 Aug 2021 | 19 Aug 2021 | 001-07151 | |
| 4 | Open Document | Open Filing | 24 Sep 2020 | 22 Sep 2020 | 001-07151 | |
| 4 | Open Document | Open Filing | 24 Aug 2020 | 20 Aug 2020 | 001-07151 | |
| 4 | Open Document | Open Filing | 10 Jun 2020 | 08 Jun 2020 | 001-07151 | |
| 4 | Open Document | Open Filing | 04 Mar 2020 | 02 Mar 2020 | 001-07151 | |
| 4 | Open Document | Open Filing | 25 Nov 2019 | 22 Nov 2019 | 001-07151 | |
| 4 | Open Document | Open Filing | 19 Sep 2019 | 17 Sep 2019 | 001-07151 | |
| 4 | Open Document | Open Filing | 26 Aug 2019 | 22 Aug 2019 | 001-07151 | |
| 4 | Open Document | Open Filing | 10 Jun 2019 | 06 Jun 2019 | 001-07151 | |
| 4 | Open Document | Open Filing | 10 Dec 2018 | 06 Dec 2018 | 001-07151 | |
| 4 | Open Document | Open Filing | 03 Dec 2018 | 29 Nov 2018 | 001-07151 | |
| 4 | Open Document | Open Filing | 21 Nov 2018 | 19 Nov 2018 | 001-07151 | |
| 4 | Open Document | Open Filing | 20 Sep 2018 | 18 Sep 2018 | 001-07151 | |
| 4 | Open Document | Open Filing | 20 Aug 2018 | 16 Aug 2018 | 001-07151 | |
| 4 | Open Document | Open Filing | 14 Sep 2017 | 12 Sep 2017 | 001-07151 | |
| 4 | Open Document | Open Filing | 21 Aug 2017 | 17 Aug 2017 | 001-07151 | |
| 4 | Open Document | Open Filing | 15 Sep 2016 | 13 Sep 2016 | 001-07151 | |
| 4 | Open Document | Open Filing | 17 Sep 2015 | 15 Sep 2015 | 001-07151 | |
| 4 | Open Document | Open Filing | 19 Aug 2015 | 17 Aug 2015 | 001-07151 | |
| 4 | Open Document | Open Filing | 07 Jan 2015 | 05 Jan 2015 | 001-07151 | |
| 3 | Open Document | Open Filing | 07 Jan 2015 | 05 Jan 2015 | 001-07151 |