| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Aug 11, 2023 | Aug 8, 2023 | 001-13881 | |
| 5 | Open Document | Open Filing | Feb 25, 2022 | Dec 31, 2021 | 001-13881 | |
| 4 | Open Document | Open Filing | Dec 27, 2021 | Dec 21, 2021 | 001-13881 | |
| 4 | Open Document | Open Filing | Oct 1, 2021 | Sep 29, 2021 | 001-13881 | |
| 4 | Open Document | Open Filing | Dec 18, 2019 | Dec 17, 2019 | 001-13881 | |
| 4 | Open Document | Open Filing | Jun 14, 2018 | Jun 12, 2018 | 001-13881 | |
| 4 | Open Document | Open Filing | Jun 8, 2018 | Jun 7, 2018 | 001-13881 | |
| 4 | Open Document | Open Filing | Aug 17, 2017 | Aug 15, 2017 | 001-13881 | |
| 4 | Open Document | Open Filing | Aug 15, 2017 | Aug 11, 2017 | 001-13881 | |
| 4 | Open Document | Open Filing | Mar 17, 2017 | Mar 16, 2017 | 001-13881 | |
| 4 | Open Document | Open Filing | Dec 13, 2016 | Dec 12, 2016 | 001-13881 | |
| 4 | Open Document | Open Filing | Dec 9, 2016 | Dec 8, 2016 | 001-13881 | |
| 4 | Open Document | Open Filing | FORM 4 | Jun 18, 2015 | Mar 19, 2015 | 001-13881 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 18, 2015 | Dec 19, 2014 | 001-13881 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 14, 2014 | Nov 25, 2013 | 001-35219 |