| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 17 Feb 2022 | 15 Feb 2022 | 000-10537 | |
| 4 | Open Document | Open Filing | FORM 4 - | 09 Mar 2021 | 08 Mar 2021 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 18 Feb 2021 | 16 Feb 2021 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 19 Feb 2020 | 18 Feb 2020 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 04 Jun 2019 | 03 Jun 2019 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 18 Apr 2018 | 17 Apr 2018 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 22 Feb 2018 | 20 Feb 2018 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 22 Jun 2017 | 20 Jun 2017 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 22 Feb 2017 | 21 Feb 2017 | 000-10537 |
| 4/A | Open Document | Open Filing | FORM 4/A - | 18 Apr 2016 | 16 Feb 2016 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 17 Feb 2016 | 16 Feb 2016 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 06 Mar 2015 | 06 Mar 2015 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 30 Jun 2014 | 28 Apr 2014 | 000-10537 |
| 4 | Open Document | Open Filing | FORM 4 - | 09 Apr 2014 | 08 Apr 2014 | 000-10537 |