| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Dec 1, 2021 | Nov 30, 2021 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 19, 2021 | Mar 17, 2021 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 8, 2021 | Mar 4, 2021 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 8, 2021 | Mar 4, 2021 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 5, 2020 | Nov 5, 2020 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 19, 2020 | Mar 17, 2020 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 13, 2020 | Mar 11, 2020 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 27, 2020 | Feb 25, 2020 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 1, 2019 | Jul 31, 2019 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 19, 2019 | Mar 15, 2019 | 001-06732 |
| 3/A | Open Document | Open Filing | FORM 3/A | Mar 18, 2019 | Jan 9, 2017 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 11, 2019 | Mar 7, 2019 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 21, 2019 | Feb 19, 2019 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 14, 2018 | Dec 13, 2018 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 27, 2018 | Aug 27, 2018 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | May 15, 2018 | May 14, 2018 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 20, 2018 | Mar 19, 2018 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 12, 2018 | Mar 8, 2018 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 5, 2018 | Mar 5, 2018 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 9, 2017 | Aug 9, 2017 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | May 25, 2017 | May 24, 2017 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 21, 2017 | Mar 17, 2017 | 001-06732 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 6, 2017 | Mar 2, 2017 | 001-06732 |
| 3 | Open Document | Open Filing | FORM 3 | Jan 12, 2017 | Jan 9, 2017 | 001-06732 |