Significant Multiples of Silicon Photonics and Silicon Germanium Capacity to Support Accelerating Customer Demand

MIGDAL HAEMEK, Israel, July 14, 2026 – Tower Semiconductor (NASDAQ/TASE: TSEM), a leading foundry of high-value analog semiconductor solutions, today announced a parallel dual-track strategic expansion of its 300mm Silicon Photonics (SiPho), Silicon Germanium (SiGe), and advanced packaging capabilities in Japan, with support from the Government of Japan. The expansion is designed to support the rapidly growing long-term customer demand, substantially increasing the Company’s manufacturing capacity and extending its technology leadership.