| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | May 9, 2025 | May 9, 2025 | 001-15525 | |
| 4 | Open Document | Open Filing | May 9, 2024 | May 8, 2024 | 001-15525 | |
| 4 | Open Document | Open Filing | May 15, 2023 | May 12, 2023 | 001-15525 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 17, 2022 | Aug 15, 2022 | 001-38832 |
| 4 | Open Document | Open Filing | May 5, 2022 | May 4, 2022 | 001-15525 | |
| 4 | Open Document | Open Filing | Nov 24, 2021 | Nov 24, 2021 | 001-15525 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Aug 13, 2021 | Aug 12, 2021 | 001-38832 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Jul 2, 2021 | May 7, 2021 | 001-38832 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | May 10, 2021 | May 7, 2021 | 001-38832 |
| 4 | Open Document | Open Filing | May 7, 2021 | May 5, 2021 | 001-15525 | |
| 4 | Open Document | Open Filing | Feb 5, 2021 | Feb 4, 2021 | 001-15525 | |
| 4 | Open Document | Open Filing | May 11, 2020 | May 8, 2020 | 001-15525 | |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 2, 2020 | Feb 26, 2020 | 001-38832 |
| 4 | Open Document | Open Filing | Aug 1, 2019 | Aug 1, 2019 | 001-15525 | |
| 4 | Open Document | Open Filing | May 13, 2019 | May 9, 2019 | 001-15525 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 11, 2019 | Mar 8, 2019 | 001-38832 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 11, 2019 | Mar 8, 2019 | 000-31271 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 8, 2019 | Mar 8, 2019 | 333-228694 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 27, 2019 | Feb 26, 2019 | 000-31271 |
| 4 | Open Document | Open Filing | May 22, 2018 | May 18, 2018 | 001-15525 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 1, 2018 | Feb 28, 2018 | 000-31271 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 23, 2017 | Aug 21, 2017 | 000-31271 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 30, 2017 | Jun 28, 2017 | 001-36538 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 17, 2017 | May 16, 2017 | 000-31271 |
| 4 | Open Document | Open Filing | May 15, 2017 | May 12, 2017 | 001-15525 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 8, 2017 | May 4, 2017 | 000-31271 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 10, 2016 | Nov 10, 2016 | 001-36538 |
| 4 | Open Document | Open Filing | FORM 4 | Sep 23, 2016 | Sep 21, 2016 | 001-36538 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 8, 2016 | Jul 6, 2016 | 000-31271 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 8, 2016 | May 26, 2016 | 000-31271 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 24, 2016 | Jun 22, 2016 | 001-36538 |
| 4 | Open Document | Open Filing | May 17, 2016 | May 13, 2016 | 001-15525 | |
| 4 | Open Document | Open Filing | FORM 4 | Aug 13, 2015 | Aug 13, 2015 | 001-36538 |
| 3 | Open Document | Open Filing | FORM 3 | Aug 13, 2015 | Aug 13, 2015 | 001-36538 |
| 4 | Open Document | Open Filing | May 19, 2015 | May 15, 2015 | 001-15525 | |
| 4/A | Open Document | Open Filing | Mar 24, 2015 | Nov 13, 2014 | 001-15525 | |
| 4 | Open Document | Open Filing | Nov 17, 2014 | Nov 13, 2014 | 001-15525 | |
| 3 | Open Document | Open Filing | Nov 17, 2014 | Nov 13, 2014 | 001-15525 |