| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | May 6, 2022 | May 5, 2022 | 000-50028 |
| 4 | Open Document | Open Filing | Apr 28, 2022 | Apr 26, 2022 | 001-31429 | |
| 4 | Open Document | Open Filing | FORM 4 | May 12, 2021 | May 11, 2021 | 000-50028 |
| 4 | Open Document | Open Filing | Apr 29, 2021 | Apr 27, 2021 | 001-31429 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 6, 2021 | Apr 5, 2021 | 000-19528 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 11, 2021 | Mar 10, 2021 | 000-19528 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Nov 10, 2020 | Nov 6, 2020 | 000-19528 |
| 4 | Open Document | Open Filing | Oct 27, 2020 | Oct 26, 2020 | 001-31429 | |
| 4 | Open Document | Open Filing | FORM 4 | Jun 26, 2020 | Jun 24, 2020 | 000-50028 |
| 4 | Open Document | Open Filing | May 15, 2020 | May 14, 2020 | 001-15451 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 4, 2020 | Apr 30, 2020 | 001-31429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 30, 2020 | Apr 28, 2020 | 001-31429 |
| 4 | Open Document | Open Filing | FORM 4 | Mar 25, 2020 | Mar 23, 2020 | 000-50028 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 12, 2020 | Mar 10, 2020 | 000-19528 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 5, 2020 | Mar 4, 2020 | 000-19528 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 1, 2019 | Jul 31, 2019 | 001-31429 |
| 4 | Open Document | Open Filing | FORM 4 | May 10, 2019 | May 9, 2019 | 001-15451 |
| 4 | Open Document | Open Filing | FORM 4 | May 8, 2019 | May 23, 2017 | 000-50028 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 7, 2019 | May 3, 2019 | 000-19528 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 1, 2019 | Apr 30, 2019 | 001-31429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 25, 2019 | Apr 24, 2019 | 001-31429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 14, 2019 | Mar 12, 2019 | 000-19528 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 12, 2019 | Mar 8, 2019 | 000-19528 |
| 4 | Open Document | Open Filing | FORM 4 | May 17, 2018 | May 15, 2018 | 000-50028 |
| 4 | Open Document | Open Filing | May 11, 2018 | May 10, 2018 | 001-15451 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 26, 2018 | Apr 24, 2018 | 001-31429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 9, 2018 | Apr 5, 2018 | 000-19528 |
| 4 | Open Document | Open Filing | FORM 4 | Aug 2, 2017 | Jul 31, 2017 | 000-50028 |
| 4 | Open Document | Open Filing | May 5, 2017 | May 4, 2017 | 001-15451 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 27, 2017 | Apr 25, 2017 | 001-31429 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 24, 2017 | Apr 20, 2017 | 000-50028 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 9, 2017 | Mar 7, 2017 | 000-19528 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 3, 2017 | Mar 3, 2017 | 001-31429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 1, 2016 | Jul 29, 2016 | 001-31429 |
| 4 | Open Document | Open Filing | May 6, 2016 | May 5, 2016 | 001-15451 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 28, 2016 | Apr 26, 2016 | 001-31429 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 15, 2016 | Apr 13, 2016 | 000-50028 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 10, 2016 | Mar 8, 2016 | 000-19528 |
| 4 | Open Document | Open Filing | FORM 4 | Oct 20, 2015 | Oct 19, 2015 | 000-50028 |
| 3 | Open Document | Open Filing | FORM 3 | Oct 20, 2015 | Oct 15, 2015 | 000-50028 |
| 4 | Open Document | Open Filing | May 8, 2015 | May 7, 2015 | 001-15451 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 30, 2015 | Apr 28, 2015 | 001-31429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 11, 2015 | Mar 9, 2015 | 000-19528 |
| 4 | Open Document | Open Filing | May 9, 2014 | May 8, 2014 | 001-15451 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 1, 2014 | Apr 29, 2014 | 001-31429 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Apr 28, 2014 | Apr 24, 2014 | 000-19528 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 6, 2014 | Mar 4, 2014 | 000-19528 |