UNITED STATES OF AMERICA,                       Plaintiff,                   v. MICROSEMI CORPORATION,                   Defendant.

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Civil Action No. 1:08 CV 1311 Judge: Trenga, Anthony J. Filed: February 4, 2009 Hearing Date: February 20, 2009

Plaintiff, through its undersigned counsel, respectfully submits Exhibit A to its Memorandum in Opposition to Defendant Microsemi's Motion to Dismiss for Improper Venue, Motion to Dismiss for Lack of Personal Jurisdiction, or, in the Alternative, Motion to Transfer Venue.

Respectfully submitted,

_______________/s/________________ LOWELL STERN (VA Bar #33460) Counsel for the United States Trial Attorney Antitrust Division, Litigation II Section United States Department of Justice 1401 H Street, N.W., Suite 3000 Washington, D.C. 20530 (202) 514-3676 (202) 307-6283 (fax) Lowell.Stern@usdoj.gov

CERTIFICATE OF SERVICE

I HEREBY CERTIFY that on the 4th day of February, 2009, I will electronically file the foregoing with the Clerk of Court using the CM/ECF system, which will then send a notification of such filing (NEF) to the following:

Brian A. O'Dea
Michael Antalics
Benjamin G. Bradshaw
William T. Buffaloe

O'Melveny & Meyers LLP
1625 Eye Street, N.W.
Washington, DC 20006