| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | Jan 4, 2022 | Dec 31, 2021 | 001-13677 | |
| 4 | Open Document | Open Filing | Oct 1, 2021 | Sep 30, 2021 | 001-13677 | |
| 4 | Open Document | Open Filing | Jul 1, 2021 | Jun 30, 2021 | 001-13677 | |
| 4 | Open Document | Open Filing | Jun 2, 2021 | Jun 1, 2021 | 001-13677 | |
| 4 | Open Document | Open Filing | May 3, 2021 | Apr 30, 2021 | 001-13677 | |
| 4 | Open Document | Open Filing | Apr 1, 2021 | Mar 31, 2021 | 001-13677 | |
| 4 | Open Document | Open Filing | Jan 5, 2021 | Dec 31, 2020 | 001-13677 | |
| 4 | Open Document | Open Filing | Oct 1, 2020 | Sep 30, 2020 | 001-13677 | |
| 4 | Open Document | Open Filing | Jul 27, 2020 | Jul 24, 2020 | 001-13677 | |
| 4 | Open Document | Open Filing | Jul 2, 2020 | Jun 30, 2020 | 001-13677 | |
| 4 | Open Document | Open Filing | Apr 1, 2020 | Mar 31, 2020 | 001-13677 | |
| 4 | Open Document | Open Filing | Jan 2, 2020 | Dec 31, 2019 | 001-13677 | |
| 4 | Open Document | Open Filing | Oct 1, 2019 | Sep 30, 2019 | 001-13677 | |
| 4 | Open Document | Open Filing | Jul 25, 2019 | Jul 25, 2019 | 001-13677 | |
| 4 | Open Document | Open Filing | Jul 1, 2019 | Jun 28, 2019 | 001-13677 | |
| 4 | Open Document | Open Filing | Apr 1, 2019 | Mar 29, 2019 | 001-13677 | |
| 4 | Open Document | Open Filing | Jan 2, 2019 | Dec 31, 2018 | 001-13677 | |
| 4 | Open Document | Open Filing | Dec 21, 2018 | Dec 21, 2018 | 001-13677 | |
| 4 | Open Document | Open Filing | Nov 2, 2018 | Oct 31, 2018 | 001-13677 | |
| 4 | Open Document | Open Filing | Oct 1, 2018 | Sep 28, 2018 | 001-13677 | |
| 4 | Open Document | Open Filing | Jul 25, 2018 | Jul 25, 2018 | 001-13677 | |
| 4 | Open Document | Open Filing | FORM 4 | Jul 2, 2018 | Jun 29, 2018 | 001-13677 |
| 4 | Open Document | Open Filing | FORM 4 KLINGER | Apr 2, 2018 | Mar 30, 2018 | 001-13677 |
| 4 | Open Document | Open Filing | FORM 4 | Feb 6, 2018 | Feb 6, 2018 | 001-13677 |
| 4 | Open Document | Open Filing | FORM 4 | Jan 2, 2018 | Dec 29, 2017 | 001-13677 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Oct 2, 2017 | Sep 29, 2017 | 001-13677 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 25, 2017 | Jul 25, 2017 | 001-13677 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jun 13, 2017 | Jun 13, 2017 | 001-13677 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 2, 2016 | Nov 1, 2016 | 001-13677 |
| 4 | Open Document | Open Filing | Aug 18, 2016 | Aug 17, 2016 | 001-13677 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 24, 2016 | Mar 24, 2016 | 001-13677 |
| 4 | Open Document | Open Filing | Dec 4, 2015 | Dec 4, 2015 | 001-13677 | |
| 4 | Open Document | Open Filing | Jun 16, 2015 | Jun 16, 2015 | 001-13677 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 9, 2015 | Feb 9, 2015 | 001-13677 |
| 4 | Open Document | Open Filing | STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES | Sep 8, 2014 | Sep 4, 2014 | 001-13677 |