| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 13 Dec 2021 | 20 Oct 2021 | 001-12257 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Mar 2017 | 22 Feb 2017 | 001-12257 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Dec 2014 | 09 Dec 2014 | 001-12257 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Sep 2014 | 28 Aug 2014 | 001-12257 |