Peter Marr
Managing Director and Regional Manager
About Peter
Peter Marr, managing director and regional manager of London Institutional Sales and Trading, joined William Blair in 2006. Before joining William Blair, Peter spent nine years at Citigroup, where he was managing director and head of U.S. equity sales to the U.K. Before that, he spent seven years at Lehman Brothers as a director in equity sales and three years at Schroders as an analyst and portfolio manager.
Peter graduated from the University of Edinburgh with a B.Com (Hons).
About William Blair
William Blair is a 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 30 offices worldwide.*
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1935Year William Blair was founded
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1,950+Employees worldwide
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145 billion+Client assets
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90+ YearsIndependent and employee-owned
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30+Offices worldwide*
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700+Companies under coverage
As of March 31, 2026
*Includes strategic partnerships with Allier Capital, BDA Partners, and Poalim Equity.