| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 21 Jul 2021 | 19 Jul 2021 | 001-08097 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 May 2021 | 30 Apr 2021 | 001-08097 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 May 2021 | 30 Apr 2021 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Mar 2021 | 25 Mar 2021 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Mar 2021 | 10 Mar 2021 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2020 | 12 May 2020 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Mar 2020 | 27 Feb 2020 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Feb 2020 | 26 Feb 2020 | 001-08097 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Feb 2020 | 22 Feb 2020 | 001-08097 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Apr 2019 | 11 Apr 2019 | 001-05491 |
| 4 | Open Document | Open Filing | 4 | 11 Apr 2019 | 11 Apr 2019 | 001-08097 |
| 3 | Open Document | Open Filing | 3 | 11 Apr 2019 | 11 Apr 2019 | 001-08097 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Mar 2019 | 01 Mar 2019 | 001-05491 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 Mar 2019 | 27 Feb 2019 | 001-05491 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Feb 2019 | 26 Feb 2019 | 001-05491 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 Feb 2019 | 25 Feb 2019 | 001-05491 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 Feb 2019 | 22 Feb 2019 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Mar 2018 | 01 Mar 2018 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Mar 2018 | 27 Feb 2018 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Feb 2018 | 26 Feb 2018 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Feb 2018 | 25 Feb 2018 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Feb 2018 | 22 Feb 2018 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Apr 2017 | 25 Apr 2017 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Mar 2017 | 05 Mar 2017 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Feb 2017 | 25 Feb 2017 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 Feb 2017 | 22 Feb 2017 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Apr 2016 | 25 Apr 2016 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Mar 2016 | 05 Mar 2016 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Mar 2016 | 26 Feb 2016 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Feb 2016 | 25 Feb 2016 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Apr 2015 | 25 Apr 2015 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2015 | 07 Mar 2015 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2015 | 06 Mar 2015 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Mar 2015 | 05 Mar 2015 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Mar 2015 | 26 Feb 2015 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Apr 2014 | 25 Apr 2014 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2014 | 06 Mar 2014 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2014 | 07 Mar 2014 | 001-05491 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Mar 2014 | 05 Mar 2014 | 001-05491 |