| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jun 3, 2021 | Apr 14, 2021 | 001-35958 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 8, 2021 | Feb 8, 2021 | 001-35958 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 27, 2020 | Apr 17, 2020 | 001-35958 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 31, 2019 | May 21, 2019 | 001-35958 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 11, 2018 | Jun 7, 2018 | 001-35958 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 8, 2017 | Aug 4, 2017 | 001-35958 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 6, 2017 | Nov 2, 2016 | 001-35958 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Feb 6, 2017 | Jun 14, 2016 | 001-35958 |