Exhibit 99.1 Magnachip Reports Results for First Quarter 2026 Q1 2026 Financial Highlights In thousands of U.S. dollars, except share data | | | | GAAP | | | | | | --- | --- | --- | --- | --- | --- | --- | --- | | | Q1 2026 | Q4 2025 | Q/Q change | | Q1 2025 | Y/Y change | | | Net Sales | 46,208 | 40,570 | up | 13.9% | 44,722 | up | 3.3% | | Power Analog Solutions | 41,647 | 36,811 | up | 13.1% | 39,857 | up | 4.5% | | Power IC | 4,561 | 3,759 | up | 21.3% | 4,865 | down | 6.2% | | Gross Profit Margin | 15. ...