| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 23 Sep 2022 | 14 Sep 2022 | 001-16071 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 27 Jun 2016 | 23 Jun 2016 | 001-13471 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 Feb 2016 | 01 Dec 2015 | 001-31643 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 15 Jan 2016 | 13 Jan 2016 | 001-13471 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 08 Dec 2015 | 05 Dec 2015 | 001-13471 |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 06 Oct 2015 | 02 Oct 2015 | 001-31643 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Sep 2014 | 18 Sep 2014 | 000-08445 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 16 Sep 2014 | 12 Sep 2014 | 000-08445 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 23 May 2014 | 21 May 2014 | 000-08445 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 24 Sep 2013 | 20 Sep 2013 | 000-08445 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 18 Sep 2013 | 16 Sep 2013 | 000-08445 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 12 Jun 2012 | 12 Jun 2012 | 000-08445 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 May 2012 | 29 May 2012 | 000-08445 |