| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Apr 7, 2022 | Apr 5, 2022 | 001-08495 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 25, 2022 | Feb 24, 2022 | 001-08495 |
| 4 | Open Document | Open Filing | FORM 4 | May 4, 2021 | May 1, 2021 | 001-08495 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 22, 2021 | Apr 20, 2021 | 001-08495 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 9, 2021 | Apr 7, 2021 | 001-08495 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 12, 2021 | Jan 8, 2021 | 001-08495 |
| 4 | Open Document | Open Filing | FORM 4 | May 5, 2020 | May 1, 2020 | 001-08495 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 23, 2020 | Apr 21, 2020 | 001-08495 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 6, 2020 | Apr 2, 2020 | 001-08495 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 19, 2020 | Feb 14, 2020 | 001-08495 |
| 4 | Open Document | Open Filing | May 3, 2019 | May 1, 2019 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 25, 2019 | Apr 23, 2019 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 4, 2019 | Apr 2, 2019 | 001-08495 | |
| 4 | Open Document | Open Filing | May 3, 2018 | May 1, 2018 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 25, 2018 | Apr 23, 2018 | 001-08495 | |
| 4 | Open Document | Open Filing | Mar 29, 2018 | Mar 27, 2018 | 001-08495 | |
| 4 | Open Document | Open Filing | May 3, 2017 | May 1, 2017 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 25, 2017 | Apr 21, 2017 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 6, 2017 | Feb 23, 2017 | 001-08495 | |
| 4 | Open Document | Open Filing | Jan 18, 2017 | Jan 13, 2017 | 001-08495 | |
| 4 | Open Document | Open Filing | Jul 13, 2016 | Jun 28, 2016 | 001-08495 | |
| 4 | Open Document | Open Filing | Jul 6, 2016 | Jul 1, 2016 | 001-08495 | |
| 4 | Open Document | Open Filing | Jun 30, 2016 | Jun 28, 2016 | 001-08495 | |
| 4 | Open Document | Open Filing | May 3, 2016 | May 1, 2016 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 27, 2016 | Apr 25, 2016 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 6, 2016 | Apr 4, 2016 | 001-08495 | |
| 4 | Open Document | Open Filing | Oct 15, 2015 | Oct 13, 2015 | 001-08495 | |
| 4 | Open Document | Open Filing | May 5, 2015 | May 1, 2015 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 30, 2015 | Apr 28, 2015 | 001-08495 | |
| 5 | Open Document | Open Filing | Apr 14, 2015 | Feb 28, 2015 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 9, 2015 | Apr 7, 2015 | 001-08495 | |
| 4 | Open Document | Open Filing | Oct 7, 2014 | Oct 3, 2014 | 001-08495 | |
| 4 | Open Document | Open Filing | May 5, 2014 | May 1, 2014 | 001-08495 | |
| 4 | Open Document | Open Filing | Apr 30, 2014 | Apr 28, 2014 | 001-08495 | |
| 4 | Open Document | Open Filing | Feb 13, 2014 | Feb 11, 2014 | 001-08495 |