| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 May 2022 | 24 May 2022 | 001-33988 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 May 2021 | 26 May 2021 | 001-33988 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 May 2020 | 20 May 2020 | 001-33988 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 May 2019 | 22 May 2019 | 001-33988 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 May 2018 | 23 May 2018 | 001-33988 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 May 2017 | 24 May 2017 | 001-33988 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 May 2016 | 25 May 2016 | 001-33988 |
| 4 | Open Document | Open Filing | 4 | 26 May 2015 | 21 May 2015 | 001-09753 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 May 2015 | 20 May 2015 | 001-33988 |
| 4 | Open Document | Open Filing | 4 | 21 May 2015 | 19 May 2015 | 001-09753 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 19 Sep 2014 | 18 Sep 2014 | 001-33988 |
| 4 | Open Document | Open Filing | 4 | 22 May 2014 | 20 May 2014 | 001-09753 |
| 4 | Open Document | Open Filing | 4 | 21 May 2014 | 19 May 2014 | 001-09753 |
| 4 | Open Document | Open Filing | 4 | 20 May 2014 | 16 May 2014 | 001-09753 |