| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 20 May 2025 | 16 May 2025 | 000-15867 |
| 144 | Open Document | Open Filing | 16 May 2025 | |||
| 4 | Open Document | Open Filing | FORM 4 | 12 May 2025 | 08 May 2025 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 | 06 May 2025 | 02 May 2025 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 | 06 May 2024 | 02 May 2024 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 | 21 Mar 2024 | 07 Mar 2024 | 000-15867 |
| 144 | Open Document | Open Filing | 07 Mar 2024 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 31 Jul 2023 | 08 Feb 2017 | 000-15867 |
| 144 | Open Document | Open Filing | 27 Jul 2023 | |||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 08 May 2023 | 04 May 2023 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 May 2022 | 05 May 2022 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 02 May 2022 | 28 Apr 2022 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 15 Mar 2021 | 12 Mar 2021 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 01 Mar 2021 | 25 Feb 2021 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 19 Feb 2020 | 14 Feb 2020 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 04 Mar 2019 | 28 Feb 2019 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 26 Feb 2019 | 22 Feb 2019 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 30 Jul 2018 | 26 Jul 2018 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Feb 2018 | 07 Feb 2018 | 000-15867 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Feb 2017 | 21 Feb 2017 | 000-15867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Feb 2017 | 01 Feb 2017 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2017 | 30 Jan 2017 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jan 2017 | 25 Jan 2017 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jan 2017 | 23 Jan 2017 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jul 2016 | 26 Jul 2016 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jul 2016 | 25 Jul 2016 | 000-06217 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 09 Feb 2016 | 08 Feb 2016 | 000-15867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jan 2016 | 23 Jan 2016 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jul 2015 | 24 Jul 2015 | 000-06217 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 10 Feb 2015 | 09 Feb 2015 | 000-15867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Jan 2015 | 23 Jan 2015 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Jan 2015 | 20 Jan 2015 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Jan 2015 | 13 Jan 2015 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Aug 2014 | 23 Aug 2014 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jul 2014 | 26 Jul 2014 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jul 2014 | 24 Jul 2014 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jul 2014 | 22 Jul 2014 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 May 2014 | 14 May 2014 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2014 | 26 Feb 2014 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Feb 2014 | 04 Feb 2014 | 000-15867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2013 | 15 Nov 2013 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Sep 2013 | 04 Sep 2013 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Aug 2013 | 28 Aug 2013 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Aug 2013 | 23 Aug 2013 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Aug 2013 | 23 Aug 2013 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jul 2013 | 26 Jul 2013 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jul 2013 | 22 Jul 2013 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2013 | 11 Feb 2013 | 000-15867 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Jan 2013 | 24 Jan 2013 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Aug 2012 | 27 Aug 2012 | 001-07935 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Aug 2012 | 16 Aug 2012 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Jul 2012 | 26 Jul 2012 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Jul 2012 | 23 Jul 2012 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Jul 2012 | 16 Jul 2012 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2012 | 01 May 2012 | 000-06217 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2012 | 02 Apr 2012 | 001-10606 |