| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 22 May 2025 | 20 May 2025 | 000-28720 |
| 4 | Open Document | Open Filing | LEWIS FORM 4 | 22 May 2025 | 19 Mar 2025 | 000-28720 |
| 4 | Open Document | Open Filing | LEWIS FORM 4 | 12 Mar 2024 | 29 Feb 2024 | 000-28720 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Mar 2023 | 21 Mar 2023 | 000-28720 |
| 4 | Open Document | Open Filing | 17 Oct 2022 | 14 Oct 2022 | 000-28720 | |
| 4 | Open Document | Open Filing | 17 Oct 2022 | 29 Mar 2021 | 000-28720 | |
| 4 | Open Document | Open Filing | 30 Sep 2020 | 28 Sep 2020 | 000-28720 | |
| 4 | Open Document | Open Filing | 30 Apr 2020 | 30 Mar 2020 | 000-28720 | |
| 4 | Open Document | Open Filing | FORM 4 | 21 Oct 2019 | 21 Oct 2019 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Oct 2019 | 15 Oct 2019 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Oct 2019 | 02 Oct 2019 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Jul 2019 | 08 Jul 2019 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Apr 2019 | 03 Apr 2019 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Jan 2019 | 02 Jan 2019 | 001-35918 |
| 4 | Open Document | Open Filing | 19 Oct 2018 | 15 Oct 2018 | 000-00935 | |
| 4 | Open Document | Open Filing | FORM 4 | 02 Oct 2018 | 01 Oct 2018 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Sep 2018 | 24 Sep 2018 | 001-35918 |
| 4 | Open Document | Open Filing | 30 Jul 2018 | 25 Jul 2018 | 000-00935 | |
| 4 | Open Document | Open Filing | 12 Jul 2018 | 09 Jul 2018 | 000-00935 | |
| 4 | Open Document | Open Filing | FORM 4 | 09 Jul 2018 | 05 Jul 2018 | 001-35918 |
| 4 | Open Document | Open Filing | 05 Jul 2018 | 26 Apr 2018 | 000-00935 | |
| 4 | Open Document | Open Filing | FORM 4 | 22 Jun 2018 | 20 Jun 2018 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Apr 2018 | 05 Apr 2018 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Mar 2018 | 19 Mar 2018 | 001-35918 |
| 4/A | Open Document | Open Filing | FORM 4/A | 16 Feb 2018 | 05 Jan 2018 | 001-35918 |
| 4 | Open Document | Open Filing | 12 Feb 2018 | 27 Sep 2017 | 000-00935 | |
| 3/A | Open Document | Open Filing | 12 Feb 2018 | 12 Feb 2016 | 000-00935 | |
| 3 | Open Document | Open Filing | 12 Feb 2018 | 12 Feb 2016 | 000-00935 | |
| 4 | Open Document | Open Filing | FORM 4 | 08 Jan 2018 | 05 Jan 2018 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Dec 2017 | 18 Dec 2017 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 04 Oct 2017 | 03 Oct 2017 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Jul 2017 | 06 Jul 2017 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Jun 2017 | 12 Jun 2017 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Apr 2017 | 06 Apr 2017 | 001-35918 |
| 4 | Open Document | Open Filing | 03 Apr 2017 | 30 Mar 2017 | 000-09047 | |
| 4 | Open Document | Open Filing | FORM 4 | 01 Mar 2017 | 27 Feb 2017 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Jan 2017 | 09 Jan 2017 | 001-35918 |
| 4 | Open Document | Open Filing | 04 Jan 2017 | 30 Dec 2016 | 000-28720 | |
| 4 | Open Document | Open Filing | FORM 4 | 23 Nov 2016 | 22 Nov 2016 | 001-35918 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Oct 2016 | 10 Oct 2016 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Jul 2016 | 01 Jul 2016 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 05 Apr 2016 | 01 Apr 2016 | 001-35918 |
| 4 | Open Document | Open Filing | 01 Apr 2016 | 01 Apr 2016 | 000-28720 | |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | 28 Jan 2016 | 14 Dec 2015 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 11 Jan 2016 | 07 Jan 2016 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Dec 2015 | 14 Dec 2015 | 001-35918 |
| 3 | Open Document | Open Filing | FORM 3 | 13 Nov 2015 | 01 Oct 2015 | 000-09047 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Nov 2015 | 04 Nov 2015 | 000-28720 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 04 Nov 2015 | 02 Nov 2015 | 000-28720 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Oct 2015 | 05 Oct 2015 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Jul 2015 | 02 Jul 2015 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Jul 2015 | 25 Jun 2015 | 000-54550 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 May 2015 | 12 May 2015 | 000-54550 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 May 2015 | 26 Mar 2015 | 000-54550 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Apr 2015 | 01 Apr 2015 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Jan 2015 | 07 Jan 2015 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 20 Nov 2014 | 18 Nov 2014 | 000-28720 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 09 Oct 2014 | 07 Oct 2014 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Jul 2014 | 11 Jul 2014 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 03 Apr 2014 | 02 Apr 2014 | 001-35918 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 07 Jan 2014 | 03 Jan 2014 | 001-35918 |