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Jan Ryu Koo is an attorney based in Boston, Massachusetts, who serves clients through Natixis Investment Managers. He maintains a general practice and brings a thoughtful, client-focused approach to his legal work. In every matter, Mr. Koo is committed to providing practical guidance, careful analysis, and responsive service tailored to each client’s goals and needs. With a broad-based general practice, Mr. Koo is equipped to address a variety of legal concerns with professionalism and attention to detail. He understands that clients value clear communication and dependable counsel, and he works to help them navigate legal issues with confidence. His approach is grounded in thorough preparation, sound judgment, and a commitment to delivering effective solutions in a wide range of matters. Based in Boston, Mr. Koo is admitted to practice under Bar Number 5134671. He is dedicated to serving clients with integrity and professionalism, and he strives to build trusted relationships through accessible, dependable legal support. Whether advising on day-to-day concerns or more complex legal matters, Mr. Koo aims to provide representation that is both practical and attentive to each client’s unique circumstances.