| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jun 29, 2021 | Jun 25, 2021 | 001-08789 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 7, 2021 | Jun 3, 2021 | 001-08789 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 30, 2020 | Jun 26, 2020 | 001-08789 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 2, 2019 | Jun 21, 2019 | 001-08789 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 9, 2018 | Jun 14, 2018 | 001-08789 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 18, 2018 | Jun 14, 2018 | 001-08789 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 29, 2017 | Jun 27, 2017 | 001-08789 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 3, 2017 | Mar 31, 2017 | 001-08789 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 23, 2016 | Jun 21, 2016 | 001-08789 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 17, 2015 | Jun 16, 2015 | 001-08789 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 27, 2015 | Dec 30, 2014 | 001-08789 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 24, 2014 | Oct 22, 2014 | 001-08789 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 16, 2014 | Jun 10, 2014 | 001-08789 |