News & Events Dec 21, 2009 Simpson Thacher Represents Initial Purchasers in Inaugural Debt Offering by Sigma Alimentos S.A. de C.V. of Mexico Dec 21, 2009 Simpson Thacher Represents Investor Group in Acquisition of Airvana Inc. Dec 21, 2009 Simpson Thacher Hosts Students from the Bronx High School for Law and Community Service