PORTLAND, Ore.--(BUSINESS WIRE)--Electro Scientific Industries, Inc. (Nasdaq: ESIO), an innovator in laser-based manufacturing solutions for the micro-machining industry, will announce results for its fiscal 2015 fourth quarter after the market closes on Tuesday, May 12, 2015. Following the release, Ed Grady, chief executive officer of ESI, will host a conference call at 2:00 p.m. PT to discuss the company’s results along with business highlights and outlook. A webcast of the conference call wi