Electro Scientific Industries, Inc. (NASDAQ: ESIO), a leading supplier of innovative laser-based manufacturing solutions for the microtechnology industry, today announced it will be presenting at the B. Riley & Co. 13th Annual Investor Conference taking place May 21-23, 2012, at the Loews Santa Monica Beach Hotel in Santa Monica, California. ESI’s presentation, focusing on the company’s strategy and financial performance, will begin at 1:30 p.m. Pacific Time on May 21. A webcast of the event will be available at http://investors.esi.com. About ESI, Inc. ESI is a leading supplier of innovative, laser-based manufacturing solutions for the microtechnology industry. Our systems enable precise structuring and testing of micron to submicron features in electronic devices, semiconductors, LEDs and other high-value components. We partner with our customers to make breakthrough technologies possible in the microelectronics, semiconductor and other emerging industries. Founded in 1944, ESI is headquartered in Portland, Ore., with global operations from the Pacific Northwest to the Pacific Rim. More information is available at www.esi.com.