| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Oct 25, 2022 | Oct 24, 2022 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 12, 2022 | Oct 10, 2022 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 14, 2021 | Oct 12, 2021 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 23, 2021 | Jul 22, 2021 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 16, 2020 | Nov 12, 2020 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 27, 2020 | Oct 26, 2020 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 14, 2020 | Oct 12, 2020 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 8, 2019 | Oct 7, 2019 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 19, 2019 | Aug 15, 2019 | 000-06936 |
| 144 | Open Document | Open Filing | FORM 144 | Aug 14, 2019 | ||
| 4 | Open Document | Open Filing | FORM 4 | Oct 10, 2018 | Oct 8, 2018 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 20, 2018 | Jul 18, 2018 | 000-06936 |
| 144 | Open Document | Open Filing | FORM 144 | Jul 18, 2018 | ||
| 4 | Open Document | Open Filing | FORM 4 | Jan 31, 2018 | Jan 29, 2018 | 000-06936 |
| 144 | Open Document | Open Filing | FORM 144 | Jan 26, 2018 | ||
| 4 | Open Document | Open Filing | FORM 4 | Oct 11, 2017 | Oct 9, 2017 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 12, 2016 | Oct 10, 2016 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | Jul 15, 2016 | Jul 15, 2016 | 000-06936 |
| 144 | Open Document | Open Filing | FORM 144 | Jul 15, 2016 | ||
| 4 | Open Document | Open Filing | FORM 4 | Nov 24, 2015 | Nov 24, 2015 | 000-06936 |
| 144 | Open Document | Open Filing | FORM 144 | Oct 27, 2015 | ||
| 4 | Open Document | Open Filing | FORM 4 | Oct 14, 2015 | Oct 12, 2015 | 000-06936 |
| 4 | Open Document | Open Filing | FORM 4 | May 20, 2015 | May 18, 2015 | 000-06936 |
| 144 | Open Document | Open Filing | FORM 144 | Apr 13, 2015 | ||
| 4 | Open Document | Open Filing | FORM 4 | Dec 30, 2014 | Dec 26, 2014 | 000-06936 |
| 144 | Open Document | Open Filing | FORM 144 | Oct 29, 2014 | ||
| 4 | Open Document | Open Filing | FORM 4 | Oct 15, 2014 | Oct 13, 2014 | 000-06936 |