| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 14, 2024 | May 10, 2024 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 31, 2024 | Jan 30, 2024 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | May 24, 2023 | May 24, 2023 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | May 19, 2023 | May 18, 2023 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 3, 2023 | Mar 2, 2023 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 23, 2023 | Feb 21, 2023 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 13, 2022 | Jun 10, 2022 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | May 28, 2021 | May 26, 2021 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | May 28, 2020 | May 27, 2020 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | May 8, 2020 | May 7, 2020 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 10, 2020 | Mar 10, 2020 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 26, 2019 | Jul 24, 2019 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 2, 2018 | Jun 28, 2018 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 30, 2017 | Jun 28, 2017 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 24, 2016 | Jun 22, 2016 | 000-20288 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 26, 2015 | Jun 24, 2015 | 000-20288 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 15, 2014 | Dec 11, 2014 | 000-20288 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Sep 5, 2014 | Sep 2, 2014 | 000-20288 |