| SC 13G | 2024-02-14 | MASON CAPITAL MANAGEMENT LLC | ATS Corp /ATS | 17,849,765 | 18.2% | EDGAR |
| SC 13G | 2024-02-09 | Capital International Investors | ATS Corp /ATS | 7,729,184 | 7.8% | EDGAR |
| SC 13G/A | 2021-02-12 | MACKENZIE FINANCIAL CORP | ATS Automation Tooling Systems Inc. | 1,639,568 | 1.8% | EDGAR |
| SC 13G/A | 2020-02-13 | MACKENZIE FINANCIAL CORP | ATS Automation Tooling Systems Inc. | 11,995,462 | 13.0% | EDGAR |
| SC 13G | 2019-11-12 | MACKENZIE FINANCIAL CORP | ATS Automation Tooling Systems Inc. | 12,460,409 | 13.5% | EDGAR |
| SC 13G/A | 2008-02-13 | ATS Automation Tooling Systems Inc. | Canadian Solar Inc. | 0 | 0.0% | EDGAR |
| SC 13G | 2007-03-30 | ATS Automation Tooling Systems Inc. | Canadian Solar Inc. | 1,864,398 | 6.8% | EDGAR |