| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Aug 17, 2022 | Aug 15, 2022 | 001-10551 | |
| 4 | Open Document | Open Filing | Aug 11, 2022 | Aug 9, 2022 | 001-10551 | |
| 4 | Open Document | Open Filing | May 17, 2022 | May 13, 2022 | 001-10551 | |
| 4 | Open Document | Open Filing | May 4, 2022 | May 2, 2022 | 001-10551 | |
| 4 | Open Document | Open Filing | Mar 17, 2022 | Mar 15, 2022 | 001-10551 | |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Aug 17, 2021 | Aug 15, 2021 | 001-10551 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 18, 2021 | May 14, 2021 | 001-10551 |
| 4 | Open Document | Open Filing | May 5, 2021 | May 3, 2021 | 001-10551 | |
| 4 | Open Document | Open Filing | Mar 17, 2021 | Mar 15, 2021 | 001-10551 | |
| 4 | Open Document | Open Filing | Aug 18, 2020 | Aug 15, 2020 | 001-10551 | |
| 4 | Open Document | Open Filing | May 19, 2020 | May 15, 2020 | 001-10551 | |
| 4 | Open Document | Open Filing | May 1, 2020 | Apr 29, 2020 | 001-10551 | |
| 4 | Open Document | Open Filing | Mar 17, 2020 | Mar 13, 2020 | 001-10551 | |
| 4 | Open Document | Open Filing | Aug 19, 2019 | Aug 15, 2019 | 001-10551 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 17, 2019 | May 15, 2019 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 18, 2019 | Mar 14, 2019 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 17, 2018 | May 15, 2018 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 17, 2018 | Apr 13, 2018 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 19, 2018 | Mar 15, 2018 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 15, 2018 | Mar 13, 2018 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 25, 2017 | May 24, 2017 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 17, 2017 | May 15, 2017 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 18, 2017 | Apr 15, 2017 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 21, 2017 | Mar 17, 2017 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 26, 2016 | May 24, 2016 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 26, 2016 | Apr 22, 2016 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 19, 2016 | Apr 15, 2016 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 13, 2016 | Apr 11, 2016 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 28, 2015 | Apr 24, 2015 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 3, 2015 | Apr 1, 2015 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 31, 2015 | Mar 29, 2015 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 10, 2014 | Apr 8, 2014 | 001-10551 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Apr 1, 2014 | Mar 29, 2014 | 001-10551 |