| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Jan 2022 | 20 Jan 2022 | 000-50448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Mar 2021 | 29 Mar 2021 | 000-50448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Feb 2021 | 14 Feb 2021 | 000-50448 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 17 Sep 2020 | 28 Aug 2020 | 000-50448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Sep 2020 | 28 Aug 2020 | 000-50448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Mar 2020 | 29 Mar 2020 | 000-50448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Feb 2020 | 14 Feb 2020 | 000-50448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Apr 2019 | 29 Mar 2019 | 000-50448 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 21 Feb 2019 | 01 Feb 2019 | 000-50448 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Oct 2018 | 04 Oct 2018 | 001-07797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 May 2018 | 22 May 2018 | 001-07797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Feb 2018 | 25 Feb 2018 | 001-07797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 May 2017 | 22 May 2017 | 001-07797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Feb 2017 | 25 Feb 2017 | 001-07797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 May 2016 | 22 May 2016 | 001-07797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Feb 2016 | 25 Feb 2016 | 001-07797 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Feb 2015 | 25 Feb 2015 | 001-07797 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 10 Apr 2014 | 04 Apr 2014 | 001-07797 |