| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 28 Mar 2022 | 24 Mar 2022 | 001-37495 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Apr 2021 | 16 Apr 2021 | 001-37495 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Mar 2021 | 23 Mar 2021 | 001-37495 |
| 4/A | Open Document | Open Filing | FORM 4/A | 23 Apr 2020 | 16 Apr 2020 | 001-37495 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Apr 2020 | 16 Apr 2020 | 001-37495 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Jun 2019 | 30 May 2019 | 001-37495 |
| 3 | Open Document | Open Filing | FORM 3 | 03 Jun 2019 | 28 May 2019 | 001-37495 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Mar 2017 | 30 Mar 2017 | 001-37495 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Mar 2017 | 28 Mar 2017 | 001-37495 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Mar 2017 | 20 Mar 2017 | 001-37495 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 07 Mar 2017 | 31 Dec 2016 | 001-37495 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Mar 2016 | 28 Mar 2016 | 001-37495 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Jun 2015 | 11 Jun 2015 | 000-20243 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Mar 2015 | 20 Mar 2015 | 000-20243 |
| 4 | Open Document | Open Filing | FORM 4 | 15 Dec 2014 | 12 Dec 2014 | 000-20243 |