On June 21, 2010, Rubicon Technology, Inc. closed a $90 million offering
consisting of $65 million in primary shares and $25 million in secondary shares.
The offering was underwritten by UBS Investment Bank and Canaccord Genuity. The
proceeds from the primary offering are being used to expand Rubicon's crystal
growth and post crystal growth manufacturing facilities. McGuireWoods served as
special counsel on the primary deal, and as counsel to the selling stockholders
in the secondary offering.