| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 31, 2022 | May 26, 2022 | 001-32414 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 10, 2022 | Mar 8, 2022 | 001-32414 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 4, 2022 | Jan 1, 2022 | 001-32414 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 22, 2021 | Dec 15, 2021 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 30, 2021 | Jun 28, 2021 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 17, 2020 | Dec 15, 2020 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 | Dec 18, 2019 | Dec 16, 2019 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 21, 2018 | Dec 19, 2018 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 19, 2017 | Dec 18, 2017 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 21, 2016 | Dec 19, 2016 | 001-32414 |
| 4/A | Open Document | Open Filing | FORM 4/A SUBMISSION | Jul 14, 2016 | Jul 12, 2016 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jul 12, 2016 | Jul 12, 2016 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 17, 2015 | Dec 15, 2015 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Nov 16, 2015 | Nov 13, 2015 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Jun 15, 2015 | Jun 11, 2015 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Dec 17, 2014 | Dec 15, 2014 | 001-32414 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | Mar 28, 2014 | Mar 27, 2014 | 001-32414 |