| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 11, 2022 | Feb 10, 2022 | 001-37487 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 17, 2020 | Apr 3, 2020 | 001-37487 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 31, 2020 | Jan 31, 2020 | 001-37487 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 31, 2019 | Apr 30, 2019 | 001-37487 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | May 14, 2019 | Mar 31, 2019 | 001-37487 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 14, 2019 | Jul 31, 2018 | 001-37487 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 14, 2019 | Jun 14, 2018 | 001-37487 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 14, 2019 | Apr 30, 2018 | 001-37487 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 14, 2019 | Jan 31, 2018 | 001-37487 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 14, 2019 | Oct 30, 2017 | 001-37487 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 14, 2019 | Sep 28, 2017 | 001-37487 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 14, 2019 | Apr 30, 2017 | 001-37487 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 14, 2019 | Jan 31, 2017 | 001-37487 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | May 14, 2019 | Aug 9, 2016 | 001-37487 |
| 4 | Open Document | Open Filing | Nov 2, 2018 | Oct 31, 2018 | 001-37487 | |
| 4 | Open Document | Open Filing | Aug 1, 2018 | Jul 31, 2018 | 001-37487 | |
| 4 | Open Document | Open Filing | Jul 31, 2018 | Jun 19, 2018 | 001-37487 | |
| 4 | Open Document | Open Filing | FORM 4 | May 2, 2018 | Apr 30, 2018 | 001-37487 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 2, 2018 | Jan 31, 2018 | 001-37487 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 3, 2017 | Oct 30, 2017 | 001-37487 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 13, 2017 | Oct 11, 2017 | 001-37487 |
| 4 | Open Document | Open Filing | FORM 4 | May 2, 2017 | May 1, 2017 | 001-37487 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 8, 2017 | Feb 7, 2017 | 001-37487 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 11, 2016 | Aug 9, 2016 | 001-37487 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 1, 2014 | Jun 6, 2014 | 000-21846 |