| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Feb 11, 2022 | Feb 9, 2022 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 3, 2022 | Feb 1, 2022 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 10, 2021 | Feb 8, 2021 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 3, 2021 | Feb 1, 2021 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 18, 2020 | Aug 17, 2020 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 31, 2020 | Mar 30, 2020 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 13, 2020 | Feb 11, 2020 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 4, 2020 | Feb 1, 2020 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 9, 2019 | Sep 5, 2019 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 13, 2019 | Mar 12, 2019 | 001-06351 |
| 4/A | Open Document | Open Filing | FORM 4/A | Feb 20, 2019 | Feb 4, 2019 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 6, 2019 | Feb 4, 2019 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 5, 2019 | Feb 1, 2019 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 5, 2018 | Feb 1, 2018 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 31, 2018 | Jan 29, 2018 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 5, 2017 | Dec 3, 2017 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 3, 2017 | Feb 1, 2017 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 31, 2017 | Jan 27, 2017 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 8, 2016 | Feb 5, 2016 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 3, 2016 | Feb 1, 2016 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 28, 2016 | Jan 26, 2016 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 10, 2015 | Mar 9, 2015 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 3, 2015 | Feb 1, 2015 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 30, 2015 | Jan 28, 2015 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 28, 2014 | Aug 26, 2014 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 4, 2014 | Feb 1, 2014 | 001-06351 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 30, 2014 | Jan 28, 2014 | 001-06351 |