| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 17 May 2021 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 29 Apr 2021 | ||
| 13F-HR | Open Document | Open Filing | 13 Nov 2020 | 30 Sep 2020 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2020 | 30 Jun 2020 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 15 May 2020 | 31 Mar 2020 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2020 | 31 Dec 2019 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 14 Nov 2019 | 30 Sep 2019 | 028-17899 | |
| SC 13D/A | Open Document | Open Filing | 27 Aug 2019 | |||
| 13F-HR | Open Document | Open Filing | 14 Aug 2019 | 30 Jun 2019 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 15 May 2019 | 31 Mar 2019 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2019 | 31 Dec 2018 | 028-17899 | |
| SC 13D/A | Open Document | Open Filing | 19 Nov 2018 | |||
| 13F-HR | Open Document | Open Filing | 14 Nov 2018 | 30 Sep 2018 | 028-17899 | |
| 13F-HR/A | Open Document | Open Filing | 21 Sep 2018 | 30 Jun 2018 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2018 | 30 Jun 2018 | 028-17899 | |
| SC 13D/A | Open Document | Open Filing | 24 May 2018 | |||
| 13F-HR | Open Document | Open Filing | 15 May 2018 | 31 Mar 2018 | 028-17899 | |
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 11 May 2018 | ||
| SC 13D/A | Open Document | Open Filing | SC 13D/A | 15 Feb 2018 | ||
| 13F-HR | Open Document | Open Filing | 14 Feb 2018 | 31 Dec 2017 | 028-17899 | |
| SC 13D | Open Document | Open Filing | SC 13 | 12 Jan 2018 | ||
| 13F-HR | Open Document | Open Filing | 14 Nov 2017 | 30 Sep 2017 | 028-17899 | |
| 13F-HR/A | Open Document | Open Filing | 15 Sep 2017 | 30 Jun 2017 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 14 Aug 2017 | 30 Jun 2017 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 15 May 2017 | 31 Mar 2017 | 028-17899 | |
| 13F-HR | Open Document | Open Filing | 14 Feb 2017 | 31 Dec 2016 | 028-17899 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Jan 2016 | 20 Jan 2016 | 001-37594 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 29 Oct 2015 | 27 Oct 2015 | 001-37594 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Oct 2015 | 20 Oct 2015 | 001-37594 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Oct 2015 | 13 Oct 2015 | 001-37594 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Oct 2015 | 07 Oct 2015 | 000-30901 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Oct 2015 | 02 Oct 2015 | 000-30901 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Oct 2015 | 01 Oct 2015 | 000-30901 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Oct 2015 | 25 Sep 2015 | 001-32167 |