Rubicon Technology, Inc. Ranked Number 13 on Crain's 2012 "Fast 50 List"

Rubicon Technology, Inc., (Nasdaq: RBCN), a leading provider of sapphire substrates and products to the LED, RFIC, semiconductor, and optical industries, announced today that it is ranked #13 on Crain's Chicago Business' 2012 Fast 50, a prestigious annual list of the fastest growing public and private companies in the Chicago area.

Crain's ranks the fastest-growing public and private companies in the Chicago area based on five-year revenue growth. Rubicon has seen a 546 percent five-year revenue growth, reporting $134 million in revenue in 2011 up from $21 million in revenue in 2006.

“Rubicon’s growth over the past five years reflects our leadership in the market for sapphire substrates, the essential building block for LED chips and Silicon on Sapphire (SoS) RFIC chips,” said Raja M. Parvez, President and Chief Executive Officer of Rubicon. “Throughout our 11 year history, Rubicon’s focus on continuous innovation has helped us develop proprietary crystal growth technology that enabled us to be first-to-market with high quality, large-diameter polished sapphire wafers. Customers rely on Rubicon because of the purity and low defect density of our product and because, as a vertically integrated supplier, we are a highly reliable partner. We look forward to continued growth as LED technology is adopted in the general lighting market and as product developers find additional applications for commercial sapphire.”

Rubicon is world’s largest, most experienced and most reliable provider of large-diameter sapphire wafers. As a vertically integrated supplier, Rubicon perfected the process to grow large sapphire crystals from raw materials in custom-built, proprietary furnaces replicating the organic sapphire creation process found in nature. As a result, Rubicon has been able to scale the growth of bulk crystal from 30 kg to 85 kg to 200 kg without compromising high quality or high yield. Rubicon completes the final stage of vertical integration with high precision core drilling, wafer slicing, surface lapping, large diameter polishing and wafer cleaning in its Penang, Malaysia facility. To date, Rubicon has shipped more than 230,000 large diameter wafers to the LED and SoS markets.

About Rubicon Technology, Inc.

Rubicon Technology, Inc. is an advanced electronic materials provider that is engaged in developing, manufacturing and selling monocrystalline sapphire and other crystalline products for light-emitting diodes (LEDs), radio frequency integrated circuits (RFICs), blue laser diodes, optoelectronics and other optical applications. The Company applies its proprietary crystal growth technology to produce very high-quality sapphire in a form that allows for volume production of various sizes and orientations of substrates and windows. Rubicon is a vertically-integrated manufacturer with capabilities in crystal growth, high precision core drilling, wafer slicing, surface lapping, large-diameter polishing and wafer cleaning processes, which the Company employs to convert the bulk crystal into products with the quality and precision specified by its customers. The Company is the world leader in larger diameter products to support next-generation LED, RFIC and optical window applications.

Further information is available at www.rubicon-es2.com.

Contacts:

Rubicon Technology, Inc.
Beth Hespe, 215-867-8600 ext. 235
bhespe@garfieldgroup.com
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