| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 18 May 2021 | 28 Dec 2020 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 May 2020 | 06 May 2020 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 May 2019 | 08 May 2019 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 11 May 2018 | 09 May 2018 | 000-31285 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 17 May 2017 | 11 May 2017 | 000-31285 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | 17 May 2017 | 12 May 2016 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 May 2017 | 11 May 2017 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 May 2016 | 12 May 2016 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 May 2016 | 12 May 2016 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Aug 2015 | 12 Aug 2015 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2015 | 14 May 2015 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 Apr 2014 | 24 Apr 2014 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Apr 2013 | 24 Apr 2013 | 000-31285 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Apr 2012 | 26 Apr 2012 | 000-31285 |