| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 - | Mar 17, 2022 | Mar 15, 2022 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 15, 2022 | Mar 13, 2022 | 000-20797 |
| 4/A | Open Document | Open Filing | FORM 4/A - | Nov 3, 2021 | Oct 29, 2021 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Nov 2, 2021 | Oct 29, 2021 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 18, 2021 | Mar 16, 2021 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 16, 2021 | Mar 13, 2021 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 5, 2021 | Mar 4, 2021 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Dec 14, 2020 | Dec 10, 2020 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Nov 12, 2020 | Nov 9, 2020 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Sep 14, 2020 | Sep 10, 2020 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Jun 12, 2020 | Jun 10, 2020 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Jun 9, 2020 | Jun 8, 2020 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 19, 2020 | Mar 17, 2020 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 17, 2020 | Aug 29, 2018 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 19, 2019 | Mar 15, 2019 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Jun 21, 2018 | Jun 19, 2018 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 19, 2018 | Mar 15, 2018 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Oct 31, 2017 | Oct 27, 2017 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | May 22, 2017 | May 19, 2017 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 17, 2017 | Mar 15, 2017 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Nov 14, 2016 | Nov 10, 2016 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 17, 2016 | Mar 15, 2016 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 17, 2015 | Mar 13, 2015 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Jul 25, 2014 | Jul 24, 2014 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | May 7, 2014 | May 6, 2014 | 000-20797 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 17, 2014 | Mar 15, 2014 | 000-20797 |