| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) | 
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jun 15, 2021 | Jun 11, 2021 | 001-37480 | 
| 4 | Open Document | Open Filing | FORM 4 | May 6, 2021 | May 4, 2021 | 001-37480 | 
| 4 | Open Document | Open Filing | FORM 4 | Sep 8, 2020 | Sep 3, 2020 | 001-37480 | 
| 4 | Open Document | Open Filing | FORM 4 | Dec 6, 2019 | Dec 5, 2019 | 001-37480 | 
| 4 | Open Document | Open Filing | FORM 4 | Dec 4, 2019 | Dec 3, 2019 | 001-37480 | 
| 4/A | Open Document | Open Filing | FORM 4/A | Nov 22, 2019 | Nov 20, 2019 | 001-37480 | 
| 4 | Open Document | Open Filing | FORM 4 | Nov 21, 2019 | Nov 20, 2019 | 001-37480 | 
| 4 | Open Document | Open Filing | FORM 4 | Nov 14, 2019 | Nov 13, 2019 | 001-37480 | 
| 4 | Open Document | Open Filing | FORM 4 | Nov 14, 2019 | Nov 12, 2019 | 001-37480 | 
| 4 | Open Document | Open Filing | FORM 4 | Nov 12, 2019 | Nov 11, 2019 | 001-37480 | 
| 3 | Open Document | Open Filing | FORM 3 | Oct 7, 2019 | Sep 30, 2019 | 001-37480 |