| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2022 | Dec 31, 2021 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 7, 2021 | Jan 5, 2021 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2021 | Dec 31, 2020 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 24, 2020 | Nov 23, 2020 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 27, 2020 | Feb 25, 2020 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 11, 2019 | Jun 10, 2019 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 7, 2019 | Jun 6, 2019 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 6, 2019 | Jun 5, 2019 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 20, 2019 | Mar 5, 2019 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 3, 2019 | Dec 31, 2018 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 10, 2018 | Jan 8, 2018 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 7, 2017 | Mar 6, 2017 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 6, 2017 | Mar 3, 2017 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 1, 2017 | Feb 28, 2017 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 13, 2017 | Jan 12, 2017 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 1, 2016 | Nov 28, 2016 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 15, 2016 | Nov 11, 2016 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 9, 2016 | Sep 7, 2016 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 9, 2016 | Sep 7, 2016 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 20, 2016 | Jan 15, 2016 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2016 | Dec 31, 2015 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 15, 2015 | Jan 13, 2015 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2015 | Dec 31, 2014 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 27, 2014 | Dec 31, 2013 | 000-10546 |
| 3/A | Open Document | Open Filing | FORM 3/A | Mar 27, 2014 | May 14, 2013 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 - | Jan 10, 2014 | Jan 8, 2014 | 000-10546 |