| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Mar 29, 2024 | Mar 27, 2024 | 000-14678 | |
| 144 | Open Document | Open Filing | Mar 27, 2024 | |||
| 4 | Open Document | Open Filing | Mar 26, 2024 | Mar 22, 2024 | 000-14678 | |
| 4 | Open Document | Open Filing | Mar 14, 2024 | Mar 12, 2024 | 000-14678 | |
| 4 | Open Document | Open Filing | Aug 25, 2023 | Aug 23, 2023 | 000-14678 | |
| 144 | Open Document | Open Filing | Aug 23, 2023 | |||
| 4 | Open Document | Open Filing | Mar 21, 2023 | Mar 17, 2023 | 000-14678 | |
| 4 | Open Document | Open Filing | Jul 19, 2022 | Jul 15, 2022 | 000-14678 | |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 22, 2022 | Mar 18, 2022 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Apr 12, 2021 | Apr 8, 2021 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 23, 2021 | Mar 19, 2021 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 18, 2021 | Mar 17, 2021 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 16, 2021 | Mar 12, 2021 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 12, 2021 | Mar 10, 2021 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Sep 15, 2020 | Sep 11, 2020 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Aug 26, 2020 | Aug 24, 2020 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 17, 2020 | Mar 13, 2020 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 17, 2020 | Mar 13, 2020 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 13, 2020 | Mar 11, 2020 | 000-14678 |
| 5 | Open Document | Open Filing | FORM 5 - | Mar 6, 2020 | Feb 1, 2020 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Dec 17, 2019 | Dec 16, 2019 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 21, 2019 | Mar 19, 2019 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 19, 2019 | Mar 15, 2019 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 15, 2019 | Mar 13, 2019 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 14, 2019 | Mar 12, 2019 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 22, 2018 | Mar 21, 2018 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 20, 2018 | Mar 16, 2018 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 16, 2018 | Mar 14, 2018 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 14, 2018 | Mar 12, 2018 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Oct 6, 2017 | Oct 4, 2017 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Sep 20, 2017 | Sep 18, 2017 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Apr 11, 2017 | Apr 7, 2017 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 16, 2017 | Mar 14, 2017 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Mar 10, 2017 | Mar 8, 2017 | 000-14678 |
| 4 | Open Document | Open Filing | FORM 4 - | Dec 8, 2015 | Dec 7, 2015 | 000-14678 |
| 3 | Open Document | Open Filing | FORM 3 - | Dec 8, 2015 | Dec 7, 2015 | 000-14678 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 27, 2015 | May 19, 2015 | 000-20052 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 2, 2015 | May 19, 2015 | 000-20052 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 17, 2015 | Feb 6, 2015 | 000-20052 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 17, 2015 | Jan 30, 2015 | 000-20052 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 10, 2015 | Feb 6, 2015 | 000-20052 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 2, 2015 | Jan 30, 2015 | 000-20052 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 30, 2014 | May 28, 2014 | 000-20052 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | May 23, 2014 | May 6, 2014 | 000-20052 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 7, 2014 | May 6, 2014 | 000-20052 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 18, 2014 | Jan 31, 2014 | 000-20052 |