| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 31 May 2024 | 30 May 2024 | 000-20574 | |
| 4 | Open Document | Open Filing | 27 Jul 2023 | 01 Jun 2023 | 000-20574 | |
| 4 | Open Document | Open Filing | 23 May 2022 | 19 May 2022 | 000-20574 | |
| 4 | Open Document | Open Filing | 09 Mar 2022 | 08 Mar 2022 | 000-20574 | |
| 4 | Open Document | Open Filing | 23 Feb 2022 | 22 Feb 2022 | 000-20574 | |
| 4 | Open Document | Open Filing | FORM 4 - | 01 Jun 2021 | 27 May 2021 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 09 Mar 2020 | 05 Mar 2020 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 27 Feb 2019 | 25 Feb 2019 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 | 24 May 2018 | 24 May 2018 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 - | 23 May 2017 | 23 May 2017 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Mar 2017 | 03 Mar 2017 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 | 09 May 2016 | 05 May 2016 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 - | 09 Mar 2015 | 06 Mar 2015 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 30 Apr 2014 | 28 Apr 2014 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 - | 05 Mar 2014 | 05 Mar 2014 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Mar 2014 | 27 Feb 2014 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Aug 2013 | 15 Aug 2013 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Aug 2013 | 12 Aug 2013 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 - | 01 Mar 2013 | 01 Mar 2013 | 000-20574 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Mar 2013 | 28 Feb 2013 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Nov 2012 | 13 Nov 2012 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Nov 2012 | 05 Nov 2012 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Aug 2012 | 15 Aug 2012 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Feb 2012 | 27 Feb 2012 | 001-34920 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Feb 2012 | 01 Feb 2012 | 001-12692 |