| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 11 May 2021 | 10 May 2021 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Nov 2020 | 09 Nov 2020 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2019 | 09 May 2019 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 07 May 2018 | 03 May 2018 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 08 May 2017 | 05 May 2017 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 06 May 2016 | 05 May 2016 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Feb 2016 | 25 Feb 2016 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 11 May 2015 | 07 May 2015 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 12 May 2014 | 08 May 2014 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2013 | 09 May 2013 | 001-33493 |
| 4 | Open Document | Open Filing | FORM 4 | 04 May 2012 | 03 May 2012 | 001-33493 |