| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 22 Jun 2021 | 17 Jun 2021 | 001-15839 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Dec 2020 | 04 Dec 2020 | 001-15839 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Sep 2020 | 31 Aug 2020 | 001-15839 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Jun 2020 | 16 Jun 2020 | 001-15839 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Jun 2019 | 25 Jun 2019 | 001-15839 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Jul 2018 | 29 Jun 2018 | 001-15839 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jun 2017 | 06 Jun 2017 | 001-15839 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Mar 2017 | 16 Mar 2017 | 001-37878 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 20 Mar 2017 | 16 Mar 2017 | 001-37878 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2016 | 07 Jun 2016 | 001-15839 |
| 3/A | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2016 | 13 Jul 2015 | 001-15839 |
| 4 | Open Document | Open Filing | 4 | 20 Jul 2015 | 16 Jul 2015 | 001-15839 |
| 3 | Open Document | Open Filing | 3 | 20 Jul 2015 | 13 Jul 2015 | 001-15839 |