| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 9, 2022 | May 2, 2022 | 001-40919 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 17, 2021 | Dec 15, 2021 | 001-40919 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 15, 2021 | Dec 13, 2021 | 001-40919 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Oct 21, 2021 | Oct 21, 2021 | 001-40919 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 30, 2018 | Apr 26, 2018 | 000-15637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2017 | May 2, 2017 | 000-15637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 1, 2017 | Apr 27, 2017 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 20, 2016 | May 18, 2016 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 22, 2016 | Apr 21, 2016 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 5, 2015 | Aug 3, 2015 | 001-36830 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 22, 2015 | May 20, 2015 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 27, 2015 | Apr 23, 2015 | 000-15637 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Apr 8, 2015 | Apr 8, 2015 | 001-36830 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 23, 2014 | May 21, 2014 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Apr 28, 2014 | Apr 24, 2014 | 000-15637 |