About

Andrew Mannarino is an attorney with Optiver Services U.S. LLC in Chicago, Illinois, where he contributes to the firm’s legal and business operations with a practical, solutions-oriented approach. Licensed in Illinois, he brings a broad general practice background and a commitment to delivering clear, thoughtful counsel tailored to the needs of the client and the matter at hand. Based in Chicago’s downtown legal and business community, Mr. Mannarino is well positioned to support matters requiring careful analysis, sound judgment, and responsive client service. In his practice, Andrew Mannarino is known for approaching legal issues with professionalism, diligence, and attention to detail. His general practice experience allows him to adapt to a wide range of legal needs, while maintaining a focus on efficient problem-solving and effective communication. Whether addressing day-to-day legal concerns or more complex issues, he works to help clients understand their options and move forward with confidence. Mr. Mannarino is admitted to practice in Illinois and is dedicated to providing dependable legal support grounded in integrity and practical insight. Clients and colleagues alike value his measured approach, commitment to service, and ability to navigate legal matters with precision. Based in Chicago, he continues to serve as a resource for individuals and organizations seeking reliable general legal guidance.

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