RUBICON TECHNOLOGY, INC. [ ] Shares Common Stock ($0.001 par value per Share) UNDERWRITING AGREEMENTUnderwriting Agreement • May 6th, 2008 • Rubicon Technology, Inc. • Semiconductors & related devices • New York
The undersigned, Raja M. Parvez, on behalf of each Selling Stockholder (as defined in the Underwriting Agreement referred to below), does hereby certify pursuant to Section 9(i) of that certain Underwriting Agreement dated [ ], 2008 (the “Underwriting Agreement”) among the Company, the Selling Stockholders named therein, and the Underwriters named therein, and pursuant to the Powers of Attorney (as defined in the Underwriting Agreement), that as of [ ], 2008:
