| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Feb 17, 2023 | Feb 15, 2023 | 001-13881 | |
| 4 | Open Document | Open Filing | Apr 29, 2022 | Apr 28, 2022 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 22, 2022 | Feb 17, 2022 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 16, 2022 | Feb 15, 2022 | 001-13881 | |
| 4 | Open Document | Open Filing | Apr 1, 2021 | Mar 31, 2021 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 24, 2021 | Feb 22, 2021 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 18, 2021 | Feb 16, 2021 | 001-13881 | |
| 4 | Open Document | Open Filing | Dec 9, 2020 | Dec 8, 2020 | 001-13881 | |
| 4 | Open Document | Open Filing | Mar 4, 2020 | Mar 2, 2020 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 20, 2020 | Feb 18, 2020 | 001-13881 | |
| 4 | Open Document | Open Filing | Aug 19, 2019 | Aug 16, 2019 | 001-13881 | |
| 4 | Open Document | Open Filing | Mar 12, 2019 | Mar 11, 2019 | 001-13881 | |
| 4 | Open Document | Open Filing | Mar 7, 2019 | Mar 5, 2019 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 21, 2019 | Feb 15, 2019 | 001-13881 | |
| 4 | Open Document | Open Filing | Mar 22, 2018 | Mar 20, 2018 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 22, 2018 | Feb 20, 2018 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 20, 2018 | Feb 15, 2018 | 001-13881 | |
| 4 | Open Document | Open Filing | Dec 29, 2017 | Dec 28, 2017 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 23, 2017 | Feb 21, 2017 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 17, 2017 | Feb 15, 2017 | 001-13881 | |
| 4 | Open Document | Open Filing | Dec 29, 2016 | Dec 28, 2016 | 001-13881 | |
| 4 | Open Document | Open Filing | Aug 24, 2016 | Aug 23, 2016 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 25, 2016 | Feb 22, 2016 | 001-13881 | |
| 4 | Open Document | Open Filing | Feb 18, 2016 | Feb 16, 2016 | 001-13881 | |
| 3 | Open Document | Open Filing | Jul 6, 2015 | Jun 27, 2015 | 001-13881 |