BENSENVILLE, Ill.--(BUSINESS WIRE)--Rubicon Technology, Inc. (Nasdaq:RBCN), a leading provider of sapphire substrates and products to the LED, semiconductor, and optical industries, will report financial results for the fourth quarter ended December 31, 2014 on Thursday, February 12, 2015, after the market closes. In conjunction with the earnings release, management will host a conference call at 5:00 p.m. EST (4:00 p.m. CST) on February 12 to review the financial results. To participate in the