| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jun 7, 2021 | Jun 3, 2021 | 001-09447 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 12, 2020 | Jun 10, 2020 | 001-09447 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 10, 2019 | Jun 6, 2019 | 001-09447 |
| 4/A | Open Document | Open Filing | FORM 4/A | Jun 22, 2018 | Jun 14, 2018 | 001-09447 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 15, 2018 | Jun 14, 2018 | 001-09447 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 16, 2017 | Jun 14, 2017 | 001-09447 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 27, 2016 | May 26, 2016 | 001-09447 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 4, 2015 | Jun 2, 2015 | 000-52105 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 5, 2014 | Jun 4, 2014 | 000-52105 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 3, 2014 | Feb 28, 2014 | 000-52105 |