Timothy Sullivan, Angel Investor

Tim Sullivan is the Vice Chair of Madison Dearborn Partners, a leading private equity firm based in Chicago. With more than four decades at the firm, he has helped shape its reputation for disciplined investing and building successful companies across multiple industries. Earlier in his career, Tim guided Madison Dearborn through the growth of eight private equity funds, raising approximately $28 billion in aggregate capital. His focus has spanned sectors such as healthcare, financial services, technology, and basic industries, reflecting a broad and strategic investment approach. He is also an angel investor, supporting ventures in healthcare innovation. His recent investment was in Sibel Health, a Series C round valued at $9 million, underscoring his interest in companies advancing medical technology and patient care solutions.