| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 21, 2021 | May 19, 2021 | 001-06314 |
| 4 | Open Document | Open Filing | FORM 4 | May 22, 2020 | May 20, 2020 | 001-06314 |
| 4 | Open Document | Open Filing | FORM 4 | May 24, 2019 | May 22, 2019 | 001-06314 |
| 4 | Open Document | Open Filing | FORM 4 | May 31, 2018 | May 31, 2018 | 001-06314 |
| 4 | Open Document | Open Filing | FORM 4 | May 26, 2017 | May 26, 2017 | 001-06314 |
| 4 | Open Document | Open Filing | FORM 4 | May 26, 2016 | May 25, 2016 | 001-06314 |
| 4 | Open Document | Open Filing | FORM 4 | May 29, 2015 | May 27, 2015 | 001-06314 |
| 4 | Open Document | Open Filing | FORM 4 | May 30, 2014 | May 29, 2014 | 001-06314 |