| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Jul 25, 2024 | Jul 25, 2024 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 24, 2024 | Jul 22, 2024 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 29, 2024 | Mar 28, 2024 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 3, 2023 | Mar 31, 2023 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 17, 2023 | Jan 17, 2023 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 31, 2022 | Mar 30, 2022 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 21, 2021 | Dec 17, 2021 | 000-20969 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 18, 2021 | Nov 16, 2021 | 001-40432 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 23, 2021 | Mar 22, 2021 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 12, 2021 | Feb 11, 2021 | 000-20969 |
| 4 | Open Document | Open Filing | 4 | Feb 11, 2021 | Feb 9, 2021 | 000-19658 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 26, 2021 | Jan 25, 2021 | 000-20969 |
| 4 | Open Document | Open Filing | 4 | Jan 25, 2021 | Jan 21, 2021 | 000-19658 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 19, 2021 | Jan 15, 2021 | 000-20969 |
| 3 | Open Document | Open Filing | 3 | Jan 11, 2021 | Dec 31, 2020 | 000-19658 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 9, 2020 | Apr 7, 2020 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 25, 2019 | Mar 21, 2019 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 29, 2018 | Mar 27, 2018 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 16, 2017 | Mar 14, 2017 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 8, 2017 | Feb 6, 2017 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 3, 2017 | Dec 31, 2016 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 14, 2016 | Dec 12, 2016 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 3, 2016 | Sep 30, 2016 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 5, 2016 | Jun 30, 2016 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 1, 2016 | Jun 1, 2016 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 1, 2016 | Mar 31, 2016 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 17, 2016 | Mar 15, 2016 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 10, 2016 | Feb 8, 2016 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 5, 2016 | Feb 3, 2016 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 4, 2016 | Dec 31, 2015 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 1, 2015 | Sep 30, 2015 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 1, 2015 | Jun 30, 2015 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 23, 2015 | Apr 21, 2015 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 1, 2015 | Mar 31, 2015 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 24, 2015 | Mar 20, 2015 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 18, 2015 | Mar 17, 2015 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 10, 2015 | Feb 8, 2015 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 6, 2015 | Feb 4, 2015 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 12, 2015 | Jan 8, 2015 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 5, 2015 | Dec 31, 2014 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 12, 2014 | Dec 10, 2014 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 10, 2014 | Nov 6, 2014 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 2, 2014 | Sep 30, 2014 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 1, 2014 | Jun 30, 2014 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 1, 2014 | Mar 31, 2014 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 21, 2014 | Mar 18, 2014 | 000-20969 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 7, 2014 | Feb 5, 2014 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 4, 2014 | Feb 2, 2014 | 000-23314 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 2, 2014 | Dec 31, 2013 | 000-20969 |