| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) | 
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 28, 2024 | May 27, 2024 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 3, 2024 | May 1, 2024 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 26, 2024 | Mar 25, 2024 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 13, 2023 | Sep 11, 2023 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 16, 2022 | Nov 11, 2022 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Aug 18, 2022 | Aug 17, 2022 | 000-52607 | 
| 4 | Open Document | Open Filing | FORM 4 | Jun 15, 2022 | Jun 9, 2022 | 000-52607 | 
| 4 | Open Document | Open Filing | FORM 4 | May 31, 2022 | May 24, 2022 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 5, 2021 | Nov 1, 2021 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jan 11, 2021 | Jan 7, 2021 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 15, 2020 | Sep 10, 2020 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 8, 2020 | Sep 3, 2020 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 30, 2020 | Jul 27, 2020 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 2, 2019 | Nov 27, 2019 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Nov 18, 2019 | Nov 13, 2019 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Sep 12, 2019 | Sep 11, 2019 | 000-52607 | 
| 4 | Open Document | Open Filing | FORM 4 | May 11, 2018 | May 9, 2018 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | May 7, 2018 | May 3, 2018 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 29, 2017 | Dec 22, 2017 | 000-52607 | 
| 4 | Open Document | Open Filing | FORM 4 | Mar 1, 2017 | Feb 27, 2017 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Feb 16, 2017 | Feb 14, 2017 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 8, 2016 | Dec 6, 2016 | 000-52607 | 
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Dec 5, 2016 | Dec 1, 2016 | 000-52607 | 
| 3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 11, 2016 | Jun 30, 2016 | 000-52607 |