Trahan arrives with a deep background in designing integrated operating models that synchronize tax efficiency with global trade strategies. His appointment marks a strategic expansion for the firm, aiming to provide more sophisticated advisory solutions to private middle-market clients and high-net-worth individuals. Lucy Lee, Managing Partner of National Tax Advisory, noted that Trahan’s capability to fuse transfer pricing with comprehensive value chain considerations addresses a critical gap for their clientele.
In section Releases
Sean Trahan Joins Citrin Cooperman to Lead New Tax Practice
With over 25 years of experience in global trade and tax strategy, Sean Trahan has joined Citrin Cooperman as a partner in National Tax Advisory. He will spearhead the firm’s newly launched Transfer Pricing and Value Chain Optimization Practice, targeting the evolving operational needs of middle-market and multinational businesses.

Before this move, Trahan served as the market leader for Transfer Pricing and Value Chain Optimization at a national professional services firm. His career includes a 22-year tenure at a Big Four accounting firm, where he operated as a senior partner in New York. His international experience spans leadership roles in London, where he directed U.S. transfer pricing efforts across EMEIA, alongside building specialized practices in the Carolinas.
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