| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 25 May 2021 | 21 May 2021 | 001-37875 |
| 4 | Open Document | Open Filing | FORM 4 | 04 May 2020 | 01 May 2020 | 001-37875 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Jul 2019 | 17 May 2019 | 001-37875 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 May 2018 | 18 May 2018 | 001-37875 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 May 2017 | 19 May 2017 | 001-37875 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 15 Nov 2016 | 02 Nov 2016 | 001-37875 |