| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 13, 2022 | Jan 11, 2022 | 001-36439 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 5, 2021 | Aug 3, 2021 | 001-36439 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 5, 2021 | Jan 4, 2021 | 001-36439 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 22, 2020 | Jul 22, 2020 | 001-36439 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 6, 2020 | Jul 2, 2020 | 001-36439 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 21, 2020 | Jan 16, 2020 | 001-36439 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 20, 2019 | Mar 18, 2019 | 001-36439 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 20, 2019 | Mar 18, 2019 | 001-36439 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 27, 2018 | Sep 26, 2017 | 001-36439 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 28, 2017 | Sep 26, 2017 | 001-36439 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 10, 2017 | Jun 29, 2017 | 001-36439 |