| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Aug 5, 2022 | Aug 3, 2022 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 3, 2021 | Dec 1, 2021 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 15, 2021 | Nov 10, 2021 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 4, 2021 | Feb 2, 2021 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 3, 2020 | Dec 1, 2020 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 23, 2020 | Nov 19, 2020 | 001-15983 |
| 4/A | Open Document | Open Filing | FORM 4/A | Dec 19, 2019 | Dec 1, 2019 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 3, 2019 | Dec 1, 2019 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 8, 2019 | Nov 6, 2019 | 001-15983 |
| 3/A | Open Document | Open Filing | FORM 3/A | Nov 8, 2019 | Dec 1, 2015 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 30, 2019 | Sep 26, 2019 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 4, 2019 | Feb 1, 2019 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 4, 2018 | Dec 1, 2018 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 5, 2018 | Nov 1, 2018 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 28, 2018 | Sep 26, 2018 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 10, 2018 | Feb 2, 2018 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 5, 2017 | Dec 1, 2017 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 3, 2017 | Nov 1, 2017 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 5, 2016 | Dec 1, 2016 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 4, 2016 | Nov 2, 2016 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 2, 2016 | Feb 1, 2016 | 001-15983 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 3, 2015 | Dec 1, 2015 | 001-15983 |
| 3 | Open Document | Open Filing | FORM 3 | Dec 3, 2015 | Dec 1, 2015 | 001-15983 |