| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | 21 Jun 2021 | 16 Jun 2021 | 000-26495 | |
| 4 | Open Document | Open Filing | 22 Feb 2021 | 18 Feb 2021 | 000-26495 | |
| 3 | Open Document | Open Filing | 11 Feb 2021 | 01 Feb 2021 | 000-26495 | |
| 4/A | Open Document | Open Filing | FORM 4/A | 22 Aug 2014 | 15 Aug 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Aug 2014 | 15 Aug 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Aug 2014 | 04 Aug 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Jul 2014 | 07 Jul 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Jun 2014 | 23 Jun 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Jun 2014 | 09 Jun 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 28 May 2014 | 27 May 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2014 | 12 May 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 28 Apr 2014 | 28 Apr 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Apr 2014 | 14 Apr 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Apr 2014 | 31 Mar 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Apr 2014 | 14 Mar 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Mar 2014 | 17 Mar 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Mar 2014 | 14 Mar 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Mar 2014 | 03 Mar 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Feb 2014 | 19 Feb 2014 | 001-33520 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Feb 2014 | 18 Feb 2014 | 001-33520 |