| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 20 Dec 2022 | 19 Dec 2022 | 001-15877 | |
| 4 | Open Document | Open Filing | 16 Mar 2022 | 15 Mar 2022 | 001-15877 | |
| 5 | Open Document | Open Filing | 18 Jan 2022 | 31 Dec 2021 | 001-15877 | |
| 4 | Open Document | Open Filing | 16 Mar 2021 | 15 Mar 2021 | 001-15877 | |
| 5 | Open Document | Open Filing | 12 Jan 2021 | 31 Dec 2020 | 001-15877 | |
| 4/A | Open Document | Open Filing | 17 Mar 2020 | 15 Mar 2020 | 001-15877 | |
| 4 | Open Document | Open Filing | 17 Mar 2020 | 15 Mar 2020 | 001-15877 | |
| 4 | Open Document | Open Filing | 17 Dec 2019 | 16 Dec 2019 | 001-15877 | |
| 4 | Open Document | Open Filing | 09 Jul 2019 | 01 Jul 2019 | 001-15877 | |
| 4 | Open Document | Open Filing | 18 Mar 2019 | 15 Mar 2019 | 001-15877 | |
| 4 | Open Document | Open Filing | 19 Dec 2018 | 17 Dec 2018 | 001-15877 | |
| 4 | Open Document | Open Filing | 06 Jun 2018 | 06 Jun 2018 | 001-15877 | |
| 4 | Open Document | Open Filing | 16 Mar 2018 | 15 Mar 2018 | 001-15877 | |
| 4 | Open Document | Open Filing | 22 Dec 2017 | 18 Dec 2017 | 001-15877 | |
| 4 | Open Document | Open Filing | 19 Jun 2017 | 14 Jun 2017 | 001-15877 | |
| 4 | Open Document | Open Filing | 15 Mar 2017 | 15 Mar 2017 | 001-15877 | |
| 4 | Open Document | Open Filing | 21 Dec 2016 | 19 Dec 2016 | 001-15877 | |
| 4 | Open Document | Open Filing | 15 Mar 2016 | 15 Mar 2016 | 001-15877 | |
| 4 | Open Document | Open Filing | 17 Dec 2015 | 15 Dec 2015 | 001-15877 | |
| 4/A | Open Document | Open Filing | 12 Jun 2015 | 16 Mar 2015 | 001-15877 | |
| 4 | Open Document | Open Filing | 17 Mar 2015 | 16 Mar 2015 | 001-15877 | |
| 4 | Open Document | Open Filing | 23 Dec 2014 | 22 Dec 2014 | 001-15877 | |
| 5 | Open Document | Open Filing | 18 Nov 2014 | 31 Dec 2012 | 001-15877 | |
| 4 | Open Document | Open Filing | 10 Nov 2014 | 03 Nov 2014 | 001-15877 | |
| 4 | Open Document | Open Filing | 19 Mar 2014 | 17 Mar 2014 | 001-15877 |