| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Oct 4, 2021 | Oct 1, 2021 | 001-37523 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 19, 2021 | Mar 17, 2021 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 6, 2021 | Jan 5, 2021 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 7, 2020 | Oct 5, 2020 | 001-13957 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 1, 2020 | May 18, 2020 | 001-37523 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 10, 2020 | Jul 9, 2020 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 8, 2020 | Apr 8, 2020 | 001-13957 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 31, 2020 | Mar 13, 2020 | 001-37523 |
| 4 | Open Document | Open Filing | OWERSHIP DOCUMENT | Mar 17, 2020 | Mar 13, 2020 | 001-37523 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 14, 2020 | Jan 14, 2020 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 11, 2019 | Oct 9, 2019 | 001-13957 |
| 4 | Open Document | Open Filing | Oct 3, 2019 | Oct 1, 2019 | 001-37523 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 12, 2019 | Jul 11, 2019 | 001-13957 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 31, 2019 | May 31, 2019 | 001-37523 |
| 4 | Open Document | Open Filing | May 16, 2019 | May 14, 2019 | 001-37523 | |
| 4 | Open Document | Open Filing | May 14, 2019 | May 10, 2019 | 001-37523 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 22, 2019 | Apr 18, 2019 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 16, 2019 | Jan 15, 2019 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 22, 2018 | Oct 19, 2018 | 001-13957 |
| 3 | Open Document | Open Filing | Oct 3, 2018 | Oct 1, 2018 | 001-37523 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 19, 2018 | Jul 17, 2018 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 19, 2018 | Apr 19, 2018 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 16, 2018 | Jan 12, 2018 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Oct 13, 2017 | Oct 11, 2017 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 14, 2017 | Jul 13, 2017 | 001-13957 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 18, 2017 | Apr 17, 2017 | 001-13957 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Apr 6, 2017 | Apr 1, 2017 | 001-13957 |