Rubicon Technology, Inc. (NASDAQ:RBCN), a leading provider of sapphire substrates and products to the LED, semiconductor and optical markets, today announced the pricing of an underwritten public offering of 2,500,000 shares of its common stock by selling stockholders at a price to the public of $13.00 per share. The offering is expected to close on March 24, 2014, subject to satisfaction of customary closing conditions. In addition, Rubicon has granted the underwriters a 30-day option to purchase up to an additional 375,000 shares of its common stock to cover over-allotments, if any. Canaccord Genuity Inc. is acting as sole book-running manager for the offering and D.A. Davidson & Co. is acting as co-manager for the offering. Rubicon will not receive any proceeds from the sale of common stock by selling stockholders. The offering is being made pursuant to an effective shelf registration statement previously filed with the Securities and Exchange Commission (SEC). A prospectus supplement and accompanying prospectus describing the terms of the offering will be filed with the SEC. Any offer, if at all, will be made only by means of a prospectus supplement and accompanying prospectus forming a part of the effective registration statement. Before investing, you should read the prospectus supplement and the accompanying prospectus, and other documents that Rubicon has filed or will file with the SEC, for more complete information about Rubicon and this offering. When available, copies of the prospectus supplement and accompanying prospectus relating to the offering may be obtained by sending a request to the offices of Canaccord Genuity Inc., Attn: Syndicate Department, 99 High Street, 12th Floor, Boston, MA 02110, or by calling (617) 371-3900. The prospectus supplement and accompanying prospectus also will be available for free on the SEC's website at www.sec.gov. This press release shall not constitute an offer to sell, or the solicitation of an offer to buy, any of the securities, nor shall there be any sale of these securities, in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state.