| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 May 2022 | 26 May 2022 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 May 2021 | 19 May 2021 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 06 Aug 2020 | 06 Aug 2020 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 May 2020 | 22 May 2020 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Jun 2019 | 30 May 2019 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 May 2018 | 18 May 2018 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Jun 2017 | 09 Jun 2017 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 25 May 2017 | 24 May 2017 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Jun 2016 | 27 May 2016 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 May 2015 | 22 May 2015 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 May 2015 | 20 May 2015 | 000-15386 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 May 2014 | 23 May 2014 | 000-15386 |