ESI Acquires Semiconductor Systems Business of GSI Group, Offers Updated Guidance

Electro Scientific Industries, Inc.

, a leading supplier of innovative laser-based manufacturing solutions for smart consumer electronics and other microtechnology industries, today announced it had signed a definitive agreement to acquire the Semiconductor Systems business of GSI Group, Inc.

, a global leader and supplier of precision photonics, laser-based solutions and precision motion devices to the medical, industrial, scientific, and electronics markets. Based in Bedford, Massachusetts, the Semiconductor Systems business provides industry-leading products in laser marking and trimming of semiconductor wafers and hybrid circuits. The parties expect the transaction to close within thirty days. The acquisition brings together two of the preeminent providers of laser manufacturing systems serving the semiconductor industry. With decades of experience, both ESI and Semiconductor Systems are technological leaders in laser-based wafer processing. The Semiconductor Systems' wafer marking products are positioned to capitalize on the industry-wide transition to 450 millimeter wafer diameters and are complementary to ESI's commitment to enabling 3D semiconductor packaging. This acquisition will add approximately $20-30 million of annual revenue to ESI. It is expected to add $0.05 to $0.10 to non-GAAP earnings per share in the first year.