Sean M. Koller

A strategic and diligent advocate during a complex investigation

When my company faced a preliminary federal inquiry into its financial reporting practices, the situation felt overwhelming. We needed counsel who was not only sharp but could navigate the nuanced intersection of regulatory scrutiny and potential criminal exposure. Sean Koller was precisely that advocate. Despite his relatively recent graduation from the University of Chicago Law School, his strategic foresight was immediately apparent. He meticulously deconstructed the government's information requests, advised our internal team with clear, actionable guidance, and maintained a calm, proactive posture throughout. His recognition in Best Lawyers' "Ones to Watch" for white-collar defense is well-earned; he possesses a maturity and analytical depth that belies his years of practice. Sean’s diligent work was instrumental in achieving a resolution with the regulatory agency without any criminal referrals—a truly optimal outcome. I would confidently recommend him to any business or individual in Chicago needing astute general practice counsel with a keen understanding of high-stakes investigations.