| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 12, 2022 | Sep 2, 2022 | 001-39053 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 22, 2022 | Mar 18, 2022 | 001-39053 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 17, 2022 | Mar 15, 2022 | 001-39053 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 7, 2021 | Sep 2, 2021 | 001-39053 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 30, 2021 | Jul 28, 2021 | 001-39053 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 28, 2020 | Dec 24, 2020 | 001-39053 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 4, 2020 | Sep 2, 2020 | 001-39053 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 16, 2020 | Apr 14, 2020 | 001-36803 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 13, 2020 | Apr 3, 2020 | 001-36803 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 4, 2019 | Feb 28, 2019 | 000-21625 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 2, 2018 | Apr 30, 2018 | 000-21625 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 12, 2018 | Apr 10, 2018 | 000-21625 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 12, 2018 | Mar 9, 2018 | 000-21625 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 6, 2018 | Dec 31, 2017 | 000-21625 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 16, 2017 | Nov 14, 2017 | 000-21625 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Aug 28, 2017 | Aug 24, 2017 | 000-21625 |