Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
---|---|---|---|---|---|---|
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 19, 2023 | Apr 17, 2023 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2023 | Jan 31, 2023 | 000-15535 |
4 | Open Document | Open Filing | FORM 4 SUBMISSION | Sep 14, 2022 | Sep 13, 2022 | 000-15535 |
4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 21, 2022 | Jun 16, 2022 | 000-15535 |
4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 16, 2022 | Jun 15, 2022 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 25, 2022 | Apr 21, 2022 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 21, 2021 | Jun 16, 2021 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 20, 2021 | Apr 16, 2021 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 19, 2021 | Jan 14, 2021 | 000-15535 |
4 | Open Document | Open Filing | FORM 4 | Jul 10, 2020 | Jul 8, 2020 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 26, 2020 | Jun 24, 2020 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 18, 2020 | Jun 16, 2020 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 22, 2020 | Apr 20, 2020 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 10, 2020 | Apr 9, 2020 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 9, 2019 | Dec 5, 2019 | 000-15535 |
4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 2, 2017 | Jul 27, 2017 | 000-15535 |
4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 28, 2017 | Jul 27, 2017 | 000-15535 |
4 | Open Document | Open Filing | FORM 4 | Dec 22, 2016 | Dec 20, 2016 | 000-15535 |
4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 6, 2015 | Jun 20, 2015 | 000-15535 |
4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 2, 2015 | May 31, 2015 | 000-15535 |
4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 22, 2015 | Mar 17, 2011 | 000-15535 |
4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 22, 2015 | Nov 13, 1992 | 000-15535 |
4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 6, 2015 | Jan 2, 2015 | 000-15535 |
4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 7, 2014 | Aug 6, 2014 | 000-15535 |