| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 08 Sep 2021 | 03 Sep 2021 | 000-21990 | |
| 4 | Open Document | Open Filing | 16 Jul 2021 | 31 Mar 2021 | 000-21990 | |
| 3 | Open Document | Open Filing | 21 May 2020 | 11 May 2020 | 000-21990 | |
| 4 | Open Document | Open Filing | FORM 4 | 04 May 2020 | 24 Apr 2020 | 001-37797 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Jun 2019 | 31 May 2019 | 001-37797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 May 2019 | 29 May 2019 | 001-35006 |
| 4 | Open Document | Open Filing | 13 May 2019 | 08 May 2019 | 000-53832 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Apr 2019 | 11 Apr 2019 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Mar 2019 | 21 Mar 2019 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Feb 2019 | 21 Feb 2019 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Jan 2019 | 24 Jan 2019 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Jan 2019 | 07 Jan 2019 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Dec 2018 | 06 Dec 2018 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Dec 2018 | 04 Dec 2018 | 001-37797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Nov 2018 | 08 Nov 2018 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Jun 2018 | 18 Jun 2018 | 001-35006 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 12 Feb 2018 | 31 Dec 2017 | 001-35006 |
| 3 | Open Document | Open Filing | FORM 3 | 08 Feb 2018 | 29 Jan 2018 | 001-37797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Jul 2017 | 17 Jul 2017 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Jun 2017 | 27 Jun 2017 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Jun 2017 | 13 Jun 2017 | 001-35006 |
| 4 | Open Document | Open Filing | 03 Apr 2017 | 29 Mar 2017 | 000-54318 | |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 10 Feb 2017 | 31 Dec 2016 | 001-35006 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Aug 2016 | 15 Jul 2016 | 000-53832 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Jun 2016 | 27 Jun 2016 | 001-35006 |
| 4/A | Open Document | Open Filing | FORM 4/A - | 08 Mar 2016 | 04 Mar 2016 | 000-54318 |
| 4 | Open Document | Open Filing | FORM 4 - | 08 Mar 2016 | 04 Mar 2016 | 000-54318 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 29 Jan 2016 | 31 Dec 2015 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 - | 24 Aug 2015 | 20 Aug 2015 | 000-54318 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Jul 2015 | 07 Jul 2015 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Jul 2015 | 29 Jun 2015 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 - | 04 Mar 2015 | 03 Mar 2015 | 000-54318 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 20 Jan 2015 | 31 Dec 2014 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Dec 2014 | 13 Dec 2014 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 Jul 2014 | 09 Jul 2014 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Jul 2014 | 27 Jun 2014 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Jun 2014 | 13 Jun 2014 | 001-35006 |
| 4 | Open Document | Open Filing | FORM 4 - | 20 Mar 2014 | 20 Mar 2014 | 000-54318 |
| 4 | Open Document | Open Filing | FORM 4 - | 11 Mar 2014 | 07 Mar 2014 | 000-54318 |