| Form type | Sec Links | Description | Filing date | Reporting date |
|---|---|---|---|---|
| SC 13D | Report | SC 13D | May 21, 2024 | |
| SC 13D/A | Report | SC 13D/A | Nov 6, 2023 | |
| SC 13D/A | Report | SC 13D/A | Dec 16, 2022 | |
| SC 13D/A | Report | SC 13D/A | Aug 26, 2022 | |
| SC 13D/A | Report | Jun 27, 2022 | ||
| SC 13D/A | Report | SC 13D/A | Jun 22, 2021 | |
| SC 13D/A | Report | SC 13D/A | Apr 24, 2020 | |
| SC 13D/A | Report | Mar 6, 2020 | ||
| SC 13D/A | Report | SC 13D/A | May 22, 2019 | |
| SC 13D/A | Report | SCHEDULE 13D/A | May 29, 2015 | |
| SC 13D/A | Report | ABB LTD | May 12, 2014 | |
| SC 13D/A | Report | SC 13D AMENDMENT 1 | May 10, 2012 | |
| SC 13D | Report | SC13DMATTERS1211 | Dec 27, 2011 | |
| SC 13D/A | Report | SC 13D/A | Mar 10, 2011 | |
| SC 13D/A | Report | SCHEDULE 13D AMENDMENT NO. 3 | Feb 14, 2011 | |
| SC 13D/A | Report | SC 13D/A | Feb 9, 2011 | |
| SC 13D | Report | SC 13D | Jan 24, 2011 |