| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 12 Dec 2025 | 10 Dec 2025 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Dec 2024 | 11 Dec 2024 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | 18 Dec 2023 | 14 Dec 2023 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | 12 Dec 2022 | 08 Dec 2022 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | 09 Dec 2021 | 07 Dec 2021 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | 20 May 2021 | 18 May 2021 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | 03 Mar 2021 | 01 Mar 2021 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Dec 2020 | 09 Dec 2020 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | 13 Dec 2019 | 11 Dec 2019 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Dec 2019 | 09 Dec 2019 | 000-26841 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 01 Feb 2019 | 31 Dec 2018 | 001-35039 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Dec 2018 | 11 Dec 2018 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 23 May 2018 | 23 May 2018 | 001-35039 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 Mar 2018 | 13 Mar 2018 | 001-35039 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Dec 2017 | 11 Dec 2017 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 May 2017 | 16 May 2017 | 001-35039 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Dec 2016 | 13 Dec 2016 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 12 Dec 2016 | 12 Dec 2016 | 001-35039 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Dec 2016 | 08 Dec 2016 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 Nov 2016 | 08 Nov 2016 | 001-35039 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 May 2016 | 18 May 2016 | 001-35039 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Feb 2016 | 09 Feb 2016 | 001-35039 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Dec 2015 | 11 Dec 2015 | 001-34434 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Dec 2015 | 07 Dec 2015 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 18 Nov 2015 | 17 Nov 2015 | 001-35039 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | 09 Oct 2015 | 30 Sep 2015 | 001-34434 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jun 2015 | 10 Jun 2015 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 14 May 2015 | 13 May 2015 | 001-35039 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Dec 2014 | 08 Dec 2014 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Apr 2014 | 08 Apr 2014 | 001-35039 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 05 Feb 2014 | 31 Dec 2013 | 001-35039 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 May 2013 | 19 Apr 2013 | 001-35039 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Dec 2012 | 10 Dec 2012 | 000-26841 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 Aug 2012 | 01 Aug 2012 | 001-35039 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 16 Feb 2012 | 15 Feb 2012 | 001-35039 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jan 2012 | 12 Jan 2012 | 000-26841 |
| 5 | Open Document | Open Filing | FORM 5 SUBMISSION | 13 Jan 2012 | 31 Dec 2011 | 001-35039 |