| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Mar 30, 2022 | Mar 28, 2022 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 24, 2022 | Feb 22, 2022 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2022 | Jan 3, 2022 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 26, 2021 | Feb 24, 2021 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 19, 2020 | Nov 17, 2020 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 27, 2020 | Feb 25, 2020 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 21, 2019 | Feb 19, 2019 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 21, 2018 | Nov 19, 2018 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 13, 2018 | Aug 9, 2018 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 22, 2018 | Feb 20, 2018 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 17, 2017 | Nov 15, 2017 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 26, 2015 | Feb 24, 2015 | 001-12579 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 26, 2014 | Feb 24, 2014 | 001-12579 |