Trustee
Sean Twomey P’35 is Director of Project Development at Clayco, one of the nation’s largest privately-owned real estate, architecture, engineering, design-build, and construction firms. With over $7.6 billion in revenue in 2024 and a team of more than 3,800 employees nationwide, Clayco delivers large-scale building solutions across a broad range of sectors.
Before joining Clayco, Twomey served as Director of Program Development at NewGround in St. Louis, where he specialized in the turnkey design and construction of headquarters and branch networks for financial institutions. He also held the role of Managing Director – Architecture + Engineering at Drury Development Corporation, leading the internal design team for Drury Hotels. Earlier in his career, he spent a decade at global design firm HOK (Helmuth Obata + Kassabaum), contributing to major civic, institutional, healthcare, and commercial architecture projects.
Twomey holds a Master of Architecture from Washington University in St. Louis and an M.B.A. from the University of Illinois Urbana-Champaign. He is a registered architect in Illinois and seven other states. He and his wife live in Palos Heights and have one child at MPA.