| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 05 Sep 2025 | 03 Sep 2025 | 000-11559 |
| 4 | Open Document | Open Filing | FORM 4 | 25 Aug 2025 | 21 Aug 2025 | 000-11559 |
| 4 | Open Document | Open Filing | FORM 4 | 19 May 2025 | 15 May 2025 | 000-11559 |
| 4 | Open Document | Open Filing | FORM 4 | 16 May 2025 | 14 May 2025 | 000-11559 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Sep 2024 | 03 Sep 2024 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Nov 2022 | 03 Nov 2022 | 000-16577 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Aug 2022 | 29 Jul 2022 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2022 | 12 May 2022 | 000-16577 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Aug 2021 | 23 Jul 2020 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2021 | 13 May 2021 | 000-16577 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2020 | 14 May 2020 | 000-16577 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Aug 2019 | 26 Jul 2019 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2019 | 16 May 2019 | 000-16577 |
| 4 | Open Document | Open Filing | FORM 4 | 31 Jul 2018 | 29 Jul 2018 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2018 | 10 May 2018 | 000-16577 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Nov 2017 | 30 Oct 2017 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2017 | 11 May 2017 | 000-16577 |
| 4 | Open Document | Open Filing | FORM 4 | 01 Aug 2016 | 31 Jul 2016 | 000-11559 |
| 4 | Open Document | Open Filing | FORM 4 | 29 Jul 2016 | 27 Jul 2016 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 May 2016 | 20 May 2016 | 000-16577 |
| 4 | Open Document | Open Filing | FORM 4 | 27 Jul 2015 | 26 Jul 2015 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 May 2015 | 18 May 2015 | 000-16577 |
| 4 | Open Document | Open Filing | FORM 4 | 13 May 2015 | 12 May 2015 | 000-11559 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 29 Jul 2014 | 27 Jul 2014 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2014 | 19 May 2014 | 000-16577 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2013 | 17 May 2013 | 000-16577 |
| 4 | Open Document | Open Filing | FORM 4 | 16 May 2013 | 14 May 2013 | 000-11559 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2012 | 21 May 2012 | 000-16577 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Feb 2012 | 17 Feb 2012 | 000-16577 |