About Mr. Sean M.
Mr. Sean M. McCumber took the law school route most do: first the books, then the bench trials and client meetings. He earned his J.D. from the University of Illinois College of Law in 1998 and is admitted to practice in Illinois. Those years at law school set the stage for a steady legal career that began the same year he graduated.
He began his professional life at Winston & Strawn LLP in 1998 as a staff lawyer. At that large firm he worked inside established teams, supporting litigation and transactional workflows and handling the kind of legal research and drafting that keeps complex matters moving. The role gave him early exposure to multi-layered cases and the processes of a major law office.
In 2005 he joined Sullivan Taylor & Gumina as an associate. The transition brought a different pace and a closer client connection. As an associate he took on broader responsibilities in case preparation, client contact and the day-to-day work of moving matters forward. Colleagues describe a lawyer who prefers clear analysis over flourish and who expects careful preparation from himself and others.
Beyond the firms, he has remained involved locally. McCumber holds membership in the DuPage County Bar Association, where he maintains ties to peers in the county and stays current on regional developments in the law. That membership reflects a practice anchored in Illinois courts and legal institutions.
Over time his career has bridged the culture of a national firm and the demands of a smaller practice environment. He has carried lessons from both settings into his work: an emphasis on methodical preparation, an attention to procedural detail and a practical sense for managing client expectations. Those threads run through the work he does day to day.
He is currently at Sullivan Taylor & Gumina, P.C., where he handles matters arising in Illinois. His current practice focuses on handling legal matters for clients through the Illinois legal system.
