| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 May 2022 | 25 May 2022 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 May 2020 | 20 May 2020 | 001-05332 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Jun 2019 | 03 Jun 2019 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 May 2019 | 22 May 2019 | 001-05332 |
| 4/A | Open Document | Open Filing | 01 Feb 2019 | 28 Nov 2018 | 000-23702 | |
| 4/A | Open Document | Open Filing | 01 Feb 2019 | 16 Nov 2018 | 000-23702 | |
| 4 | Open Document | Open Filing | 29 Nov 2018 | 28 Nov 2018 | 000-23702 | |
| 4 | Open Document | Open Filing | 20 Nov 2018 | 16 Nov 2018 | 000-23702 | |
| 4 | Open Document | Open Filing | 20 Sep 2018 | 18 Sep 2018 | 000-23702 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 May 2018 | 30 May 2018 | 000-23702 |
| 4 | Open Document | Open Filing | FORM 4 | 23 May 2018 | 23 May 2018 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Nov 2017 | 08 Nov 2017 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 Jun 2017 | 27 Jun 2017 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 26 May 2017 | 24 May 2017 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 Apr 2017 | 26 Apr 2017 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Nov 2016 | 04 Nov 2016 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Aug 2016 | 17 Aug 2016 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Jun 2016 | 14 Jun 2016 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 May 2016 | 25 May 2016 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Mar 2016 | 18 Mar 2016 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Mar 2016 | 15 Mar 2016 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 21 Aug 2015 | 19 Aug 2015 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Aug 2015 | 17 Aug 2015 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Jun 2015 | 01 Jun 2015 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 May 2015 | 20 May 2015 | 001-05332 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 01 May 2015 | 29 Apr 2015 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 Jun 2014 | 12 Jun 2014 | 000-23702 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 May 2014 | 21 May 2014 | 001-05332 |