| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 21 May 2021 | 19 May 2021 | 001-15985 |
| 4 | Open Document | Open Filing | FORM 4 | 26 May 2020 | 22 May 2020 | 001-15985 |
| 5 | Open Document | Open Filing | FORM 5 | 13 Feb 2020 | 31 Dec 2019 | 001-15985 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Jan 2016 | 26 Jan 2016 | 001-15985 |
| 5 | Open Document | Open Filing | FORM 5 | 20 Jan 2016 | 31 Dec 2015 | 001-15985 |
| 3 | Open Document | Open Filing | FORM 3 | 05 Jun 2014 | 21 May 2014 | 001-15985 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Jun 2012 | 27 Jun 2012 | 001-08222 |
| 4 | Open Document | Open Filing | FORM 4 | 17 May 2012 | 15 May 2012 | 001-08222 |
| 4 | Open Document | Open Filing | FORM 4 | 01 May 2012 | 30 Apr 2012 | 001-08222 |
| 4 | Open Document | Open Filing | FORM 4 | 23 Feb 2012 | 15 Feb 2012 | 001-08222 |