| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 18 Mar 2022 | 17 Mar 2022 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Mar 2021 | 24 Feb 2021 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Feb 2020 | 05 Feb 2020 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Feb 2019 | 06 Feb 2019 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Feb 2018 | 07 Feb 2018 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Feb 2017 | 08 Feb 2017 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Oct 2016 | 21 Oct 2016 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 02 May 2016 | 27 Apr 2016 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Feb 2016 | 25 Feb 2016 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Feb 2016 | 09 Feb 2016 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Feb 2016 | 05 Feb 2016 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Feb 2016 | 28 Jan 2016 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 22 Jan 2015 | 20 Jan 2015 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Aug 2014 | 12 Aug 2014 | 000-51821 |
| 4 | Open Document | Open Filing | FORM 4 | 23 May 2014 | 21 May 2014 | 000-51821 |