| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 07 May 2021 | 05 May 2021 | 000-54545 | |
| 4 | Open Document | Open Filing | 14 Sep 2020 | 09 Sep 2020 | 000-54545 | |
| 4 | Open Document | Open Filing | 02 Jul 2020 | 30 Jun 2020 | 000-54545 | |
| 4 | Open Document | Open Filing | 18 Feb 2020 | 14 Feb 2020 | 000-54545 | |
| 4 | Open Document | Open Filing | 24 Jun 2019 | 20 Jun 2019 | 000-54545 | |
| 4 | Open Document | Open Filing | FORM 4 | 19 Dec 2018 | 18 Dec 2018 | 000-54545 |
| 4 | Open Document | Open Filing | 4 | 20 Aug 2018 | 15 Aug 2018 | 000-54545 |
| 4 | Open Document | Open Filing | 4 | 23 Mar 2018 | 20 Mar 2018 | 000-54545 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Mar 2017 | 20 Mar 2017 | 000-54545 |
| 3 | Open Document | Open Filing | 3 | 10 Jan 2017 | 29 Jul 2015 | 000-54545 |