| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Aug 2022 | 10 Aug 2022 | 000-09992 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Nov 2021 | 03 Nov 2021 | 000-09992 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Nov 2020 | 04 Nov 2020 | 000-09992 |
| 4 | Open Document | Open Filing | FORM 4 | 24 Feb 2020 | 20 Feb 2020 | 000-09992 |
| 4 | Open Document | Open Filing | FORM 4 | 07 Nov 2019 | 05 Nov 2019 | 000-09992 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Apr 2019 | 10 Apr 2019 | 000-15175 |
| 4 | Open Document | Open Filing | FORM 4 | 19 Dec 2018 | 17 Dec 2018 | 000-15175 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Nov 2018 | 07 Nov 2018 | 000-09992 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Nov 2018 | 01 Nov 2018 | 000-09992 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Sep 2018 | 10 Aug 2018 | 000-09992 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2018 | 18 May 2018 | 001-37713 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Apr 2018 | 11 Apr 2018 | 000-15175 |
| 4 | Open Document | Open Filing | FORM 4 | 17 Nov 2017 | 16 Nov 2017 | 000-09992 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Nov 2017 | 01 Nov 2017 | 000-09992 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2017 | 18 May 2017 | 001-37713 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2017 | 27 Apr 2017 | 001-37713 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Apr 2017 | 11 Apr 2017 | 000-15175 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Nov 2016 | 02 Nov 2016 | 000-09992 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Jul 2016 | 11 Jul 2016 | 000-15175 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2016 | 27 Apr 2016 | 001-37713 |
| 4 | Open Document | Open Filing | FORM 4 | 14 Apr 2016 | 12 Apr 2016 | 000-15175 |
| 4 | Open Document | Open Filing | FORM 4 | 06 Nov 2015 | 04 Nov 2015 | 000-09992 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2015 | 01 May 2015 | 000-24821 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Apr 2015 | 08 Apr 2015 | 000-15175 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Mar 2015 | 24 Mar 2015 | 000-15175 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2015 | 18 Feb 2015 | 000-24821 |
| 4 | Open Document | Open Filing | ANNUAL DIRECTOR GRANT | 05 Nov 2014 | 05 Nov 2014 | 000-09992 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Nov 2014 | 31 Oct 2014 | 000-24821 |
| 4 | Open Document | Open Filing | FORM 4 | 08 Jul 2014 | 07 Jul 2014 | 000-15175 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2014 | 13 May 2014 | 000-24821 |
| 4 | Open Document | Open Filing | FORM 4 - | 11 Apr 2014 | 09 Apr 2014 | 000-15175 |