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| Form | Report Date | Filing Date | Description |
|---|---|---|---|
| 8-K | 2026-09-24 | 2026-09-28 | 8-K |
| 8-K | 2026-08-03 | 2026-08-03 | 8-K |
| 10-Q | 2026-06-30 | 2026-08-03 | 10-Q |
| 8-K | 2026-07-09 | 2026-07-10 | 8-K |
| 8-K | 2026-07-03 | 2026-07-09 | 8-K |
| 8-K | 2026-05-13 | 2026-05-13 | 8-K |
| 10-Q | 2026-03-31 | 2026-05-13 | 10-Q |
| 8-K | 2026-03-30 | 2026-03-30 | 8-K |
| 10-K | 2025-12-31 | 2026-03-30 | 10-K |
| 8-K | 2025-12-30 | 2026-01-06 | 8-K |
| 8-K | 2026-01-05 | 2026-01-05 | 8-K |
| 8-K | 2025-12-30 | 2025-12-31 | 8-K |
| 8-K | 2025-11-07 | 2025-11-13 | 8-K |
| 10-Q | 2025-09-30 | 2025-11-13 | 10-Q |
| 8-K | 2025-10-15 | 2025-10-17 | 8-K |
| 8-K | 2025-09-05 | 2025-09-08 | 8-K |
| 10-Q | 2025-06-30 | 2025-08-13 | 10-Q |
| 8-K | 2025-08-13 | 2025-08-13 | 8-K |
| 8-K | 2025-08-06 | 2025-08-07 | 8-K |
| 8-K | 2025-07-31 | 2025-07-31 | 8-K |
| 8-K | 2025-07-16 | 2025-07-16 | 8-K |
| 8-K | 2025-06-30 | 2025-07-01 | 8-K |
| 8-K | 2025-06-24 | 2025-06-24 | 8-K |
| 10-Q | 2025-03-31 | 2025-05-14 | 10-Q |
| 8-K | 2025-05-12 | 2025-05-12 | 8-K |
| 8-K | 2025-03-12 | 2025-03-14 | - |
| 8-K | 2025-03-10 | 2025-03-11 | - |
| 8-K | 2025-03-11 | 2025-03-11 | - |
| 10-K | 2024-12-31 | 2025-03-07 | - |
| 8-K | 2025-03-07 | 2025-03-07 | - |
| 8-K | 2025-03-05 | 2025-03-05 | - |
| 8-K | 2024-11-27 | 2024-12-04 | - |
| 10-Q | 2024-09-30 | 2024-11-06 | - |
| 8-K | 2024-10-16 | 2024-10-22 | - |
| 8-K | 2024-09-27 | 2024-10-01 | - |
| 8-K | 2024-08-05 | 2024-08-09 | - |
| 10-Q | 2024-06-30 | 2024-08-05 | - |
| 8-K | 2024-08-05 | 2024-08-05 | - |
| 8-K | 2024-07-15 | 2024-07-19 | - |
| 8-K | 2024-07-08 | 2024-07-12 | - |
| 8-K | 2024-06-14 | 2024-06-20 | - |
| 8-K | 2024-05-13 | 2024-05-13 | - |
| 10-Q | 2024-03-31 | 2024-05-13 | - |
| 8-K | 2024-05-03 | 2024-05-06 | - |
| 8-K | 2024-03-15 | 2024-03-19 | FORM 8-K |
| 8-K | 2024-03-13 | 2024-03-15 | FORM 8-K |
| 10-K | 2023-12-31 | 2024-03-08 | FORM 10-K |
| 8-K | 2024-03-08 | 2024-03-08 | FORM 8-K |
| 8-K | 2024-02-05 | 2024-02-05 | FORM 8-K |
| 8-K | 2024-01-23 | 2024-01-25 | FORM 8-K |
| 8-K | 2024-01-08 | 2024-01-12 | FORM 8-K |
| 8-K | 2023-12-29 | 2024-01-02 | FORM 8-K |
| 8-K | 2023-12-20 | 2023-12-22 | FORM 8-K |
| 8-K | 2023-12-14 | 2023-12-14 | FORM 8-K |
| 8-K | 2023-12-12 | 2023-12-13 | FORM 8-K |
| 8-K | 2023-12-07 | 2023-12-11 | FORM 8-K |
| 8-K | 2023-11-24 | 2023-11-24 | FORM 8-K |
| 8-K | 2023-11-09 | 2023-11-13 | FORM 8-K |
| 10-Q | 2023-09-30 | 2023-11-09 | FORM 10-Q |
| 8-K | 2023-09-25 | 2023-09-29 | FORM 8-K |
| 8-K | 2023-08-17 | 2023-08-22 | FORM 8-K |
| 10-Q | 2023-06-30 | 2023-08-11 | FORM 10-Q |
| 8-K | 2023-08-11 | 2023-08-11 | FORM 8-K |
| 8-K | 2023-08-09 | 2023-08-10 | FORM 8-K |
| 8-K | 2023-06-30 | 2023-07-06 | FORM 8-K |
| 8-K | 2023-07-06 | 2023-07-06 | FORM 8-K |
| 8-K | 2023-05-16 | 2023-05-18 | FORM 8-K |
| 10-Q | 2023-03-31 | 2023-05-12 | FORM 10-Q |
| 8-K | 2023-04-10 | 2023-04-11 | FORM 8-K |
| 10-K | 2022-12-31 | 2023-04-03 | FORM 10-K |
| 8-K | 2023-03-14 | 2023-03-14 | FORM 8-K |
| 8-K | 2023-01-05 | 2023-01-10 | FORM 8-K |
| 10-Q | 2022-09-30 | 2022-11-14 | FORM 10-Q |
| 8-K | 2022-09-28 | 2022-10-04 | FORM 8-K |
| 8-K | 2022-08-15 | 2022-08-16 | FORM 8-K |
| 10-Q | 2022-06-30 | 2022-08-15 | FORM 10-Q |
| 8-K | 2022-08-08 | 2022-08-12 | FORM 8-K |
| 8-K | 2022-06-20 | 2022-06-24 | FORM 8-K |
| 8-K | 2022-06-15 | 2022-06-16 | FORM 8-K |
| 10-Q | 2022-03-31 | 2022-05-16 | FORM 10-Q |
| 8-K | 2022-04-11 | 2022-04-15 | FORM 8-K |
| 8-K | 2022-03-28 | 2022-04-04 | FORM 8-K |
| 10-K | 2021-12-31 | 2022-03-21 | FORM 10K |
| 8-K | 2022-03-11 | 2022-03-17 | FORM-8K |
| 8-K | 2022-01-29 | 2022-02-03 | FORM 8-K |
| 8-K | 2021-12-27 | 2021-12-29 | PRIMARY DOCUMENT |
| 8-K | 2021-12-07 | 2021-12-08 | PRIMARY DOCUMENT |
| 8-K | 2021-11-18 | 2021-11-22 | PRIMARY DOCUMENT |
| 10-Q | 2021-09-30 | 2021-11-15 | QUARTERLY REPORT |
| 8-K | 2021-10-04 | 2021-10-08 | FORM 8K |
| 8-K | 2021-09-24 | 2021-09-24 | PRIMARY DOCUMENT |
| 8-K | 2021-08-20 | 2021-08-26 | PRIMARY DOCUMENT |
| 10-Q | 2021-06-30 | 2021-08-20 | PRIMARY DOCUMENT |
| 8-K | 2021-08-11 | 2021-08-16 | CURRENT REPORT |
| 8-K | 2021-05-19 | 2021-05-25 | FORM 8-K |
| 10-Q | 2021-03-31 | 2021-05-14 | QUARTERLY REPORT |
| 8-K | 2021-04-28 | 2021-05-03 | CURRENT REPORT |
| 8-K | 2021-04-15 | 2021-04-21 | CURRENT REPORT |
| 10-K | 2020-12-31 | 2021-03-30 | ANNUAL REPORT |
| 8-K | 2020-12-24 | 2020-12-30 | CURRENT REPORT |
| 10-Q | 2020-09-30 | 2020-11-13 | FORM 10-Q 9-30-2020 |
| 10-Q | 2020-06-30 | 2020-08-12 | FORM 10-Q 6-30-2020 |
| 10-Q | 2020-03-31 | 2020-05-15 | FORM 10-Q 3-31-2020 |
| 10-K | 2019-12-31 | 2020-03-30 | FORM 10-K |
| 8-K | 2020-03-19 | 2020-03-19 | FORM 8K 03-19-2020 |
| 8-K | 2020-03-03 | 2020-03-03 | FORM 8K 3-3-2020 |
| 10-Q | 2019-09-30 | 2019-11-13 | FORM 10Q 9-30-2019 |
| 10-Q | 2019-06-30 | 2019-08-09 | FORM 10-Q 6-30-2019 |
| 8-K | 2019-07-31 | 2019-08-02 | FORM 8K 5.02 APPOINT DIRECTOR |
| 10-Q | 2019-03-31 | 2019-05-17 | FORM 10-Q 03-31-2019 |
| 8-K | 2019-04-18 | 2019-04-26 | FORM 8-K 5.02 DEPARTURE OF DIRECTOR |
| 10-K | 2018-12-31 | 2019-04-16 | FORM 10-K 12-31-2018 |
| 8-K | 2019-02-06 | 2019-02-06 | FORM 8K 02062019 |
| 10-Q | 2018-09-30 | 2018-11-14 | FORM 10-Q 9-30-2018 |
| 8-K | 2018-09-26 | 2018-09-27 | FORM 8-K 5.02 9-26-2018 |
| 10-Q | 2018-06-30 | 2018-08-13 | FORM 10-Q 6-30-2018 |
| 8-K | 2018-07-13 | 2018-07-13 | FORM 8K 7-13-2018 7.01 DISCLOSURE |
| 10-Q | 2018-03-31 | 2018-05-23 | FORM 10-Q 3-31-2018 |
| 8-K | 2018-04-30 | 2018-04-30 | FORM 8-K 4-30-2018 |
| 10-K | 2017-12-31 | 2018-04-18 | FORM 10-K 12-31-2018 |
| 8-K | 2018-03-28 | 2018-04-02 | FORM 8-K 3-28-2018 |
| 8-K | 2017-12-19 | 2017-12-19 | FORM 8-K 12-19-2017 |
| 10-Q | 2017-09-30 | 2017-11-20 | FORM 10-Q 9-30-2017 |
| 8-K | 2017-09-06 | 2017-09-06 | FORM 8-K 9-6-17 |
| 10-Q | 2017-06-30 | 2017-08-11 | FORM 10-Q 6-30-17 |
| 10-Q | 2017-03-31 | 2017-05-12 | FORM 10-Q 3-31-2017 |
| 10-K | 2016-12-31 | 2017-04-17 | FORM 10-K 12-31-2016 |
| 8-K | 2017-01-16 | 2017-01-18 | FORM 8-K 1-18-2017 |
| 10-Q | 2016-09-30 | 2016-11-21 | FORM 10-Q 9-30-2016 |
| 10-Q | 2016-06-30 | 2016-08-18 | FORM 10Q 6-30-2016 |
| 8-K | 2016-07-14 | 2016-07-14 | FORM 8-K 7-10-2016 |
| 10-Q | 2016-03-31 | 2016-05-16 | FORM 10-Q 3-31-2016 |
| 10-K | 2015-12-31 | 2016-03-30 | FORM 10-K 12-31-15 |
| 10-Q | 2015-09-30 | 2015-11-12 | FORM 10Q 9-30-15 |
| 8-K | 2015-10-13 | 2015-10-13 | FORM 8-K THE YANG GROUP STK DIST #2 10-13-15 |
| 8-K | 2015-09-11 | 2015-09-16 | FORM 8-K 9-11-15 |
| 10-Q | 2015-06-30 | 2015-08-10 | FORM 10-Q 6-30-2015 |
| 8-K | 2015-07-10 | 2015-07-13 | FORM 8-K 07/10/2015 |
| 10-Q | 2015-03-31 | 2015-05-15 | FORM 10-Q 3-31-15 |
| 10-K | 2014-12-31 | 2015-04-13 | FORM 10-K 12-31-14 |
| 8-K | 2015-02-18 | 2015-02-18 | FORM 8-K 2-18-15 |
| 8-K | 2015-01-28 | 2015-01-28 | FORM 8-K 1-28-15 |
| 8-K | 2014-11-17 | 2014-11-17 | FORM 8-K 11-17-14 |
| 10-Q | 2014-09-30 | 2014-11-14 | FORM 10-Q 9-30-2014 |
| 10-Q | 2014-06-30 | 2014-08-14 | FORM 10-Q 6-30-2014 |
| 8-K | 2014-05-23 | 2014-05-27 | FORM 8-K 5-23-14 |
| 10-Q | 2014-03-31 | 2014-05-15 | FORM 10-Q 3-31-14 |
| 10-K | 2013-12-31 | 2014-04-15 | FORM 10-K 12-31-13 |
| 8-K | 2014-04-10 | 2014-04-10 | FORM 8-K 4-10-14 |
| 8-K | 2014-04-02 | 2014-04-02 | FORM 8-K 4-2-2014 |
| 8-K | 2014-02-21 | 2014-02-24 | FORM 8-K 2-24-2014 |
| 8-K | 2014-02-14 | 2014-02-14 | FORM 8-K 2-14-2014 |
| 10-Q | 2013-09-30 | 2013-11-13 | FORM 10-Q 9-30-13 |
| 8-K | 2013-10-31 | 2013-11-01 | FORM 8-K 10-31-13 |
| 8-K | 2013-09-05 | 2013-09-05 | FORM 8-K 9-5-2013 |
| 10-Q | 2013-06-30 | 2013-08-09 | FORM 10-Q 6-30-2013 |
| 10-Q | 2013-03-31 | 2013-05-14 | FORM 10-Q 3-31-2013 |
| 10-K | 2012-12-31 | 2013-04-01 | FORM 10-K 12-31-2012 |
| 8-K | 2012-12-05 | 2012-12-05 | FORM 8-K 12-5-2012 |
| 10-Q | 2012-09-30 | 2012-11-13 | FORM 10-Q 9-30-12 |
| 10-Q | 2012-06-30 | 2012-08-09 | FORM 10-Q 6-30-12 |
| 8-K | 2012-06-20 | 2012-06-20 | FORM 8-K 6-20-12 |
| 8-K | 2012-06-08 | 2012-06-08 | FORM 8-K CHIKAGAMI 6-8-2012 |
| 8-K | 2012-05-31 | 2012-06-06 | FORM 8-K 5-31-2012 |
| 10-Q | 2012-03-31 | 2012-05-15 | FORM 10-Q 3-31-12 |
| 8-K | 2012-04-24 | 2012-04-24 | FORM 8-K HBL 4-24-12 |
| 8-K | 2012-04-23 | 2012-04-23 | FORM 8-K 4-23-12 PAGE |
| 10-K | 2011-12-31 | 2012-04-19 | FORM 10-K 12-31-2011 |
| 8-K | 2012-03-12 | 2012-03-13 | FORM 8-K CHEN 03-12-2011 |
| 10-Q | 2011-09-30 | 2011-11-21 | FORM 10-Q 9-30-11 |
| 10-Q | 2011-06-30 | 2011-09-08 | FORM 10-Q 6-30-11 |
| 10-Q | 2011-06-30 | 2011-08-12 | NT 10Q 6-30-2011 |
| 10-Q | 2011-03-31 | 2011-05-19 | FORM 10-Q 3-31-2011 |
| 8-K | 2011-04-18 | 2011-04-18 | FORM 8-K 4-18-11 |
| 10-K | 2010-12-31 | 2011-04-12 | FORM 10-K 12-31-10 |
| 8-K | 2011-02-04 | 2011-02-04 | FORM 8-K 2-4-2011 |
| 8-K | 2010-11-30 | 2010-12-01 | FORM 8-K 12-1-10 |
| 10-Q | 2010-09-30 | 2010-11-19 | FORM 10Q 9-30-10 |
| 10-Q | 2010-06-30 | 2010-08-23 | FORM 10Q 6-30-10 |
| 8-K | 2010-08-19 | 2010-08-19 | FORM 8-K 8-19-2010 |
| 10-Q | 2010-03-31 | 2010-05-14 | FORM 10-Q 3-31-2010 |
| 10-K | 2009-12-31 | 2010-04-01 | FORM 10-K 12-31-2009 |
| 10-Q | 2009-09-30 | 2009-11-13 | FORM 10-Q 09-30-09 |
| 8-K | 2009-10-02 | 2009-10-02 | FORM 8-K 10-02-09 |
| 8-K | 2009-09-03 | 2009-09-03 | FORM 8-K 9-3-2009 |
| 10-Q | 2009-06-30 | 2009-08-12 | FORM 10-Q 6-30-2009 |
| 8-K | 2009-06-02 | 2009-06-02 | FORM 8-K 6-2-2009 |
| 10-Q | 2009-03-31 | 2009-05-15 | FORM 10-Q 3-31-2009 |
| 10-K | 2008-12-31 | 2009-03-31 | FORM 10-K 12-31-2008 |
| 8-K | 2009-02-27 | 2009-03-02 | FORM 8-K 02-26-09 |
| 10-Q | 2008-09-30 | 2008-11-13 | - |
| 8-K | 2008-11-10 | 2008-11-10 | - |
| 10-Q | 2008-06-30 | 2008-08-14 | AMARILLO 10-Q 6-30-08 |
| 10-Q | 2008-03-31 | 2008-05-13 | AMARILLO FORM 10Q 3-31-2008 |
| 8-K | 2008-04-18 | 2008-04-21 | AMAR FORM 8-K 04-18-08 |
| 8-K | 2008-02-21 | 2008-02-21 | FORM 8-K 022108 |
| 8-K | 2008-01-11 | 2008-01-15 | AMARILLO FORM 8-K EQUITY SALE 01-10-2008 |
| 8-K | 2006-08-10 | 2006-08-10 | - |
| 8-K | 2006-04-04 | 2006-04-04 | - |
| 8-K | 2006-03-27 | 2006-03-28 | - |
| 8-K | 2004-08-19 | 2004-08-30 | - |
| 8-K | 2004-08-19 | 2004-08-20 | - |
| 8-K | 2001-12-10 | 2001-12-13 | FORM 8-K |
| 8-K | 2001-09-07 | 2001-09-24 | FORM 8-K |
| 8-K | 2000-02-11 | 2000-02-16 | FORM 8-K |
| 8-K | 1999-11-30 | 1999-12-23 | FORM 8-K |
| 8-K | 1999-09-30 | 1999-10-01 | FORM 8-K |
| 8-K | 1999-04-02 | 1999-04-16 | FORM 8-K |