CONFIDENTIAL TREATMENT REQUESTED
BY RUBICON TECHNOLOGY, INC.
SECOND AMENDMENT TO SUPPLY AGREEMENT
by and between
PEREGRINE SEMICONDUCTOR CORP.
RUBICON TECHNOLOGY, INC.
This Second Amendment (this “Amendment”) further amends that certain Supply Agreement by and between Peregrine
Semiconductor Corp., with offices at 9450 Carroll Park Drive, San Diego, California 92121 (“Buyer”) and Rubicon Technology,
Inc., with offices at 9931 Franklin Avenue, Franklin Park, Illinois 60131 (“Seller”), dated as of March 26, 2007 (the “Agreement”),
and is made by and between the parties to the Agreement as of November 25, 2008 (the “Effective Date”).
A. Buyer and Seller are parties to the Agreement, which provides for the purchase and sale in 2008 of Products, as defined
therein, as amended by an agreement of the parties as of August 22, 2008 that modified the volume of Product purchases and
sales in 2008 and provided for certain Product purchases and sales in 2009 (the “Amended Agreement”).
B. Buyer and Seller now desire to amend the Amended Agreement to provide for an agreement between the parties with
respect to Product purchases and sales in 2008, 2009, 2010, and 2011.
C. Buyer also currently owes Seller $2,906,250, which includes certain amounts for Products purchased under the Amended
Agreement. In connection with payment of amounts owed, Buyer and Seller also desire to provide for a closer strategic
relationship between the two companies pursuant to which Seller will become an investor in Buyer as part of Buyer’s recent
Series D1 Preferred Stock financing (“D1 Financing”) and Buyer will issue to Seller Series D1 Preferred Stock (the “Series D1
Stock”) in the amount of $2,000,000 pursuant to an agreement entered into as of the date of this Amendment and will pay to
Seller $906,250 on the Effective Date of this Amendment.
Now, therefore, for the consideration described in the recitals above and the mutual benefits to be derived by the parties
from this Amendment,