| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Feb 17, 2022 | Dec 25, 2021 | 001-39209 | |
| 4 | Open Document | Open Filing | Oct 5, 2021 | Oct 1, 2021 | 001-39209 | |
| 4 | Open Document | Open Filing | Jul 6, 2021 | Jul 1, 2021 | 001-39209 | |
| 4 | Open Document | Open Filing | Apr 29, 2021 | Apr 27, 2021 | 001-39209 | |
| 4 | Open Document | Open Filing | Apr 5, 2021 | Apr 1, 2021 | 001-39209 | |
| 4 | Open Document | Open Filing | Jan 5, 2021 | Jan 1, 2021 | 001-39209 | |
| 4 | Open Document | Open Filing | Oct 5, 2020 | Oct 1, 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | Jul 6, 2020 | Jul 1, 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | Apr 3, 2020 | Apr 1, 2020 | 001-39209 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 15, 2018 | Feb 13, 2018 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 22, 2016 | Nov 21, 2016 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 18, 2016 | Aug 16, 2016 | 000-19202 |
| 4/A | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 23, 2016 | Nov 23, 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 25, 2015 | Nov 23, 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 26, 2015 | Feb 24, 2015 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 5, 2014 | Nov 4, 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 22, 2014 | Aug 4, 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 22, 2014 | May 20, 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 16, 2014 | May 14, 2014 | 000-19202 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 8, 2014 | May 6, 2014 | 000-19202 |