According to the Company’s FORM 10-Q for the quarterly period ended October 4, 2008, on December 6, 2001, a class action complaint for violations of U.S. federal securities laws was filed in the United States District Court for the Southern District of New York against the Company, four officers individually and the three investment banking firms who served as representatives of the underwriters in connection with the Company’s initial public offering of common stock. The Consolidated Amended Complaint alleges that the registration statement and prospectus for the Company’s initial public offering did not disclose that (1) the underwriters solicited and received additional, excessive and undisclosed commissions from certain investors, and (2) the underwriters had agreed to allocate shares of the offering in exchange for a commitment from the customers to purchase additional shares in the aftermarket at pre-determined higher prices. The Complaint alleges violations of the Securities Act of 1933 and the Securities Exchange Act of 1934. The action seeks damages in an unspecified amount and is being coordinated with approximately 300 other nearly identical actions filed against other companies. A court order dated October 9, 2002 dismissed without prejudice the four officers of the Company who had been named individually. On December 5, 2006, the Second Circuit vacated a decision by the District Court granting class certification in six “focus” cases, which are intended to serve as test cases. The plaintiffs selected these six cases, which do not include the Company. The Court has indicated that its decisions in the six focus cases are intended to provide strong guidance for the parties in the remaining cases. On April 6, 2007, the Second Circuit denied a petition for rehearing filed by plaintiffs, but noted that plaintiffs could ask the District Court to certify more narrow classes than those that were rejected. On August 14, 2007, the plaintiffs filed amended complaints in the six focus cases. On September 27, 2007, the plaintiffs moved to certify a class in the six focus cases. On November 14, 2007, the issuers and the underwriters named as defendants in the six focus cases filed motions to dismiss the amended complaints against them. On March 26, 2008, the District Court dismissed the Securities Act claims of those members of the putative classes in the focus cases who sold their securities for a price in excess of the initial offering price and those who purchased outside the previously certified class period. With respect to all other claims, the motions to dismiss were denied. On October 10, 2008, at the request of plaintiffs, plaintiffs’ motion for class certification was withdrawn, without prejudice.

The complaint alleges violations of Sections 11, 12(a)(2) and 15 of the Securities Act of 1933 and Section 10(b) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder. On or about March 23, 2000, Silicon Labs commenced an initial public offering of 3,200,000 of its shares of common stock at an offering price of $31 per share (the "Silicon Labs IPO"). In connection therewith, Silicon Labs filed a registration statement, which incorporated a prospectus (the "Prospectus"), with the SEC. The complaint further alleges that the Prospectus was materially false and misleading because it failed to disclose, among other things, that: (i) the Underwriter Defendants had solicited and received excessive and undisclosed commissions from certain investors in exchange for which the Underwriter Defendants allocated to those investors material portions of the restricted number of Silicon Labs shares issued in connection with the Silicon Labs IPO; and (ii) the Underwriter Defendants had entered into agreements with customers whereby the Underwriter Defendants agreed to allocate Silicon Labs shares to those customers in the Silicon Labs IPO in exchange for which the customers agreed to purchase additional Silicon Labs shares in the aftermarket at pre-determined prices.