| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 30 May 2023 | 25 May 2023 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 31 May 2022 | 26 May 2022 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 24 May 2021 | 20 May 2021 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 27 May 2020 | 26 May 2020 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 26 May 2020 | 21 May 2020 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Feb 2020 | 21 Feb 2020 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 28 May 2019 | 23 May 2019 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Jun 2018 | 05 Jun 2018 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 24 May 2018 | 24 May 2018 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Jan 2018 | 22 Jan 2018 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Aug 2017 | 15 Aug 2017 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 26 May 2017 | 25 May 2017 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Mar 2017 | 08 Mar 2017 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 23 May 2016 | 19 May 2016 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 16 May 2016 | 12 May 2016 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Mar 2016 | 14 Mar 2016 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 28 May 2015 | 26 May 2015 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 21 May 2015 | 21 May 2015 | 001-33137 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Jan 2015 | 22 Jan 2015 | 001-33137 |
| 3 | Open Document | Open Filing | FORM 3 | 23 Jan 2015 | 22 Jan 2015 | 001-33137 |