| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 06 Jul 2021 | 01 Jul 2021 | 001-39209 | |
| 4 | Open Document | Open Filing | 05 Apr 2021 | 01 Apr 2021 | 001-39209 | |
| 4 | Open Document | Open Filing | 05 Jan 2021 | 01 Jan 2021 | 001-39209 | |
| 4 | Open Document | Open Filing | 05 Oct 2020 | 01 Oct 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | 06 Jul 2020 | 01 Jul 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | 15 Jun 2020 | 12 Jun 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | 11 Jun 2020 | 10 Jun 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | 09 Jun 2020 | 05 Jun 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | 05 Jun 2020 | 04 Jun 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | 03 Jun 2020 | 02 Jun 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | 03 Apr 2020 | 01 Apr 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | 08 Apr 2019 | 04 Apr 2019 | 000-19202 | |
| 4 | Open Document | Open Filing | 27 Jun 2018 | 25 Jun 2018 | 000-19202 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Aug 2017 | 04 Aug 2017 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Aug 2016 | 03 Aug 2016 | 000-19202 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Jun 2016 | 01 Jun 2016 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Jun 2016 | 01 Jun 2016 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 19 Apr 2016 | 15 Apr 2016 | 000-19202 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Mar 2016 | 10 Mar 2016 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 14 Mar 2016 | 10 Mar 2016 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Feb 2016 | 05 Feb 2016 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Dec 2015 | 16 Dec 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 25 Nov 2015 | 23 Nov 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Sep 2015 | 22 Sep 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Aug 2015 | 30 Jul 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 13 May 2015 | 12 May 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 May 2015 | 04 May 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Apr 2015 | 15 Apr 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Feb 2015 | 19 Feb 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Nov 2014 | 10 Nov 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Aug 2014 | 01 Aug 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 Jul 2014 | 25 Jul 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 May 2014 | 30 May 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 May 2014 | 21 May 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 May 2014 | 06 May 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Jan 2014 | 07 Jan 2014 | 000-19202 |