NII Holdings (NASDAQ: NIHD) provides fully integrated mobile communication services for businesses and high value consumers in Latin America. NII uses iDEN® (integrated Digital Enhanced Network) technology to provide instant-access, low-latency, high-quality, and dependable communications. It combines digital cellular voice, data, and Nextel’s differentiated Direct Connect® to provide a unique integrated communication solution. For more information visit the company’s Web site at: www.nii.com www.nii.com

William Blair & Company is a global investment banking and asset management firm committed to building enduring relationships with clients and providing expertise and solutions to meet their evolving needs. An independent and employee-owned firm, William Blair is based in Chicago, and has office locations in 10 cities, including London, New York, Shanghai, and Zurich. For more information on William Blair & Company, visit www.williamblair.com

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