| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 16, 2021 | Dec 16, 2021 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 13, 2021 | May 12, 2021 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 13, 2020 | May 13, 2020 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 23, 2020 | Mar 19, 2020 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 28, 2019 | May 23, 2019 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 23, 2018 | May 17, 2018 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 17, 2017 | May 16, 2017 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 13, 2016 | May 12, 2016 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 24, 2015 | Nov 24, 2015 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 15, 2015 | May 14, 2015 | 001-36041 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 14, 2014 | May 14, 2014 | 001-36041 |