| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jun 3, 2021 | Jun 3, 2021 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 3, 2020 | Jun 2, 2020 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 6, 2019 | Dec 4, 2019 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | May 29, 2019 | May 29, 2019 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 11, 2018 | Jun 11, 2018 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | May 7, 2018 | May 7, 2018 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | May 31, 2017 | May 30, 2017 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 27, 2017 | Feb 24, 2017 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | May 31, 2016 | May 31, 2016 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 10, 2016 | Mar 10, 2016 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 25, 2015 | Aug 25, 2015 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 13, 2015 | Aug 13, 2015 | 000-33501 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 27, 2014 | Aug 26, 2014 | 000-33501 |