| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Jul 2021 | 23 Jul 2021 | 000-20333 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Nov 2017 | 15 Nov 2017 | 000-20333 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Oct 2017 | 30 Oct 2017 | 000-20333 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 07 Oct 2015 | 07 Oct 2015 | 000-20333 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 28 Sep 2015 | 28 Sep 2015 | 000-20333 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 15 Aug 2014 | 31 Dec 2013 | 000-20333 |