| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Aug 2022 | 02 May 2022 | 001-40919 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 17 Dec 2021 | 15 Dec 2021 | 001-40919 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Dec 2021 | 13 Dec 2021 | 001-40919 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 21 Oct 2021 | 21 Oct 2021 | 001-40919 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2018 | 26 Apr 2018 | 000-15637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2017 | 02 May 2017 | 000-15637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2017 | 27 Apr 2017 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 May 2016 | 18 May 2016 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Apr 2016 | 21 Apr 2016 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 05 Aug 2015 | 03 Aug 2015 | 001-36830 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 May 2015 | 20 May 2015 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 27 Apr 2015 | 23 Apr 2015 | 000-15637 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 08 Apr 2015 | 08 Apr 2015 | 001-36830 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 May 2014 | 21 May 2014 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Apr 2014 | 24 Apr 2014 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 24 May 2013 | 22 May 2013 | 000-15637 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Apr 2013 | 25 Apr 2013 | 000-15637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2012 | 26 Apr 2012 | 000-15637 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Feb 2012 | 03 Feb 2012 | 000-15637 |