| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 25, 2023 | May 25, 2023 | 000-19882 | |
| 4 | Open Document | Open Filing | May 18, 2023 | May 17, 2023 | 000-19882 | |
| 4 | Open Document | Open Filing | May 17, 2023 | May 16, 2023 | 000-19882 | |
| 4 | Open Document | Open Filing | Mar 15, 2023 | Mar 14, 2023 | 000-19882 | |
| 4 | Open Document | Open Filing | Mar 15, 2022 | Mar 14, 2022 | 000-19882 | |
| 4 | Open Document | Open Filing | Dec 17, 2021 | Dec 15, 2021 | 000-19882 | |
| 4 | Open Document | Open Filing | Aug 25, 2021 | Aug 24, 2021 | 000-19882 | |
| 4 | Open Document | Open Filing | Mar 9, 2021 | Mar 5, 2021 | 000-19882 | |
| 4 | Open Document | Open Filing | Mar 8, 2021 | Mar 4, 2021 | 000-19882 | |
| 4/A | Open Document | Open Filing | Jan 29, 2021 | Dec 31, 2020 | 000-19882 | |
| 4 | Open Document | Open Filing | Jan 5, 2021 | Dec 31, 2020 | 000-19882 | |
| SC 13D/A | Open Document | Open Filing | Aug 13, 2020 | |||
| 4 | Open Document | Open Filing | May 11, 2020 | May 8, 2020 | 000-19882 | |
| 4 | Open Document | Open Filing | FORM 4 | Dec 23, 2019 | Dec 23, 2019 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jan 3, 2018 | Dec 31, 2017 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 19, 2017 | Dec 15, 2017 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 13, 2017 | Nov 9, 2017 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 15, 2016 | Dec 14, 2016 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 16, 2016 | May 11, 2016 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 26, 2016 | Feb 24, 2016 | 000-19882 |
| 4/A | Open Document | Open Filing | FORM 4/A | Jan 4, 2016 | Dec 10, 2015 | 000-19882 |
| 4/A | Open Document | Open Filing | FORM 4/A | Dec 14, 2015 | Feb 13, 2015 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 14, 2015 | Dec 10, 2015 | 000-19882 |
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | Aug 24, 2015 | ||
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 20, 2015 | Aug 19, 2015 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 19, 2015 | Aug 17, 2015 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 17, 2015 | Aug 13, 2015 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 7, 2015 | Aug 6, 2015 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Feb 18, 2015 | Feb 13, 2015 | 000-19882 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 12, 2014 | Dec 10, 2014 | 000-19882 |