William Blair, the premier global partnership with expertise in investment banking, investment management, and private wealth management, announced today the continued growth of the firm’s Private Capital Advisory team in Europe with the addition of Tim-Oliver Seidel. Based in London, Seidel will lead William Blair’s secondaries efforts in Europe, focusing on delivering the firm’s integrated model for GP-led secondary transactions.
“The addition of Tim is an important milestone in our Private Capital Advisory team’s expansion in Europe,” said Mike Custar, head of Secondary Advisory and co-head of Private Capital Advisory at William Blair. “Tim brings a significant amount of experience executing GP-led secondary transactions across Europe, and his addition helps us continue to expand our advisory capabilities globally.”
Before joining William Blair, Seidel worked in the private funds team at Moelis and draws on more than 15 years of experience in investment banking and private capital markets. His background includes origination, negotiation, and execution of complex transactions with a particular focus on GP-led secondaries and capital fundraising across asset classes. Before Moelis, Seidel worked at Campbell Lutyens, Evercore, and Robert W. Baird. He received his M.B.A. in corporate finance from the University of Notre Dame and a B.S. in international business from the University of Applied Sciences in Nürnberg, Germany.
“I am thrilled to join William Blair’s Private Capital Advisory team at such a pivotal time in the evolution of the secondary market in Europe,” Seidel said. “William Blair’s extensive relationships with global financial sponsors, combined with its multidisciplinary team of M&A industry and product specialists, uniquely position the firm to serve as a holistic strategic advisor to GPs across all aspects of liquidity and capital formation.”
William Blair’s Private Capital Advisory team expanded to Europe in 2023 with the hiring of Tom Lewis in London and Silke Wood in Zurich, and in 2024 added London-based managing director Connor O’Keeffe to focus on fund placement and advisory services.
About William Blair Investment Banking
William Blair’s investment banking group enables corporations, financial sponsors, and owner/entrepreneurs around the world to achieve their growth, liquidity, and financing objectives. Drawing on the collective intellectual capital and deep sector expertise of a global team that reaches over 20 cities on four continents, the investment banking group brings a rigorous and innovative approach to corporate board advisory projects, mergers and acquisitions, and equity and debt financing. From January 2020 to December 2024, the team advised on more than $800 billion in completed transaction volume.
About William Blair
William Blair is the premier global partnership with expertise in investment banking, investment management, and private wealth management. We provide advisory services, strategies, and solutions to meet our clients’ evolving needs. As an independent and employee-owned firm, together with our strategic partners, we operate in more than 20 offices worldwide.*
*Includes strategic partnerships with Allier Capital, BDA Partners, and Poalim Capital Markets.