| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 2, 2022 | Apr 30, 2022 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 28, 2022 | Mar 25, 2022 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 11, 2021 | Mar 10, 2021 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 3, 2021 | Mar 1, 2021 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 1, 2021 | Mar 1, 2021 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2020 | Mar 4, 2020 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 11, 2019 | Mar 8, 2019 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2019 | Mar 1, 2019 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2018 | Mar 1, 2018 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 30, 2017 | Aug 29, 2017 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 30, 2017 | Mar 30, 2017 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 10, 2017 | Mar 8, 2017 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 15, 2016 | Mar 10, 2016 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 31, 2015 | Mar 30, 2015 | 000-50368 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 11, 2014 | Mar 10, 2014 | 000-50368 |