| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4/A | Open Document | Open Filing | FORM 4/A | 05 May 2022 | 29 Apr 2022 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Apr 2022 | 27 Apr 2022 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Nov 2021 | 26 Nov 2021 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 28 May 2021 | 26 May 2021 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 28 May 2020 | 27 May 2020 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2020 | 12 May 2020 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2020 | 11 May 2020 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 26 Jul 2019 | 24 Jul 2019 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Jul 2018 | 28 Jun 2018 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 30 Jun 2017 | 28 Jun 2017 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Jun 2016 | 22 Jun 2016 | 000-20288 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Jun 2015 | 24 Jun 2015 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Jun 2014 | 25 Jun 2014 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Sep 2013 | 25 Sep 2013 | 000-20288 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 May 2013 | 06 May 2013 | 000-20288 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2013 | 29 Apr 2013 | 000-20288 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Sep 2012 | 24 Sep 2012 | 000-20288 |