| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 27, 2025 | May 22, 2025 | 000-10546 |
| 4 | Open Document | Open Filing | 4 | May 28, 2024 | May 23, 2024 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 5, 2023 | May 19, 2023 | 000-10546 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Jun 5, 2023 | Nov 25, 2022 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 29, 2022 | Nov 25, 2022 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 1, 2022 | Aug 30, 2022 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 17, 2022 | Jun 15, 2022 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | May 13, 2021 | May 11, 2021 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | May 14, 2020 | May 12, 2020 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 14, 2019 | Jun 13, 2019 | 000-10546 |
| 4 | Open Document | Open Filing | FORM 4 | May 16, 2019 | May 14, 2019 | 000-10546 |
| 3 | Open Document | Open Filing | FORM 3 | Mar 28, 2019 | Mar 18, 2019 | 000-10546 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 15, 2015 | May 13, 2015 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 5, 2015 | May 2, 2015 | 001-07221 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 11, 2015 | Mar 9, 2015 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 11, 2015 | Mar 9, 2015 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2014 | May 12, 2014 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 6, 2014 | May 2, 2014 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 12, 2014 | Mar 10, 2014 | 001-07221 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 25, 2014 | Feb 22, 2014 | 001-07221 |