| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 26 Sep 2022 | 22 Sep 2022 | 000-26495 |
| 4 | Open Document | Open Filing | 23 Jul 2021 | 21 Jul 2021 | 000-26495 | |
| 4 | Open Document | Open Filing | 03 Aug 2020 | 30 Jul 2020 | 000-26495 | |
| 4 | Open Document | Open Filing | 08 Jan 2020 | 06 Jan 2020 | 000-26495 | |
| 4 | Open Document | Open Filing | 24 Jan 2019 | 22 Jan 2019 | 000-26495 | |
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 02 Jan 2019 | 01 Jan 2019 | 000-26495 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 03 Aug 2015 | 03 Aug 2015 | 001-35904 |
| 4 | Open Document | Open Filing | FORM 4 | 18 May 2015 | 15 May 2015 | 001-35904 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Feb 2015 | 15 Feb 2015 | 001-35904 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Feb 2015 | 06 Feb 2015 | 001-35904 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Nov 2014 | 17 Nov 2014 | 001-35904 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Aug 2014 | 15 Aug 2014 | 001-35904 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Jun 2014 | 23 Jun 2014 | 001-35904 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Mar 2014 | 04 Mar 2014 | 001-35904 |