| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Feb 28, 2022 | Feb 24, 2022 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 6, 2022 | Jan 4, 2022 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 13, 2021 | Dec 10, 2021 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 25, 2021 | Feb 23, 2021 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 14, 2021 | Jan 12, 2021 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 14, 2021 | Jan 12, 2021 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 17, 2020 | Mar 13, 2020 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 27, 2020 | Jan 23, 2020 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 21, 2019 | Feb 19, 2019 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 23, 2018 | Feb 21, 2018 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 3, 2018 | Dec 31, 2017 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 19, 2017 | Dec 15, 2017 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 6, 2017 | Jun 2, 2017 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 22, 2017 | Feb 17, 2017 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 25, 2016 | Feb 23, 2016 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2016 | Dec 31, 2015 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 14, 2015 | Sep 10, 2015 | 001-08944 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 14, 2015 | Jan 12, 2015 | 001-08944 |
| 4 | Open Document | Open Filing | Jul 30, 2014 | Jul 28, 2014 | 001-08944 | |
| 4/A | Open Document | Open Filing | Jul 30, 2014 | Jun 2, 2014 | 001-08944 | |
| 4 | Open Document | Open Filing | Jun 4, 2014 | Jun 2, 2014 | 001-08944 | |
| 3 | Open Document | Open Filing | Jun 4, 2014 | Jun 2, 2014 | 001-08944 |