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William Blair & Company

William Blair & Company

Chicago, Illinoiswilliamblair.com

Overview

William Blair & Company is an American multinational independent investment bank and financial services firm that provides investment banking, investment management, and private wealth management services to corporations, institutions, and individuals.

Year Founded

1935

Portfolio Companies

53

Investments

William Blair & Company investments
CompanyDateStageLead
Digital AssetJul 2026Growth EquityCo-investor
ReformationJun 2026IPOCo-investor
Digital AssetJun 2026Series FCo-investor
Canton NetworkJun 2026StrategicCo-investor
Fervo EnergyMay 2026IPOCo-investor

Key People

Aaron Stout

Preferred Stock Syndicate and Fixed Income Trading, Managing Director

Andrew Jessen

Managing Director, Partner

Aparna Dang

Managing Director

Bryan Finkel

Managing Director

Christian Waite

Managing Director

Chu-An Lee

Managing Director

Dirk Felsmann

Head of DACH Investment Banking, Managing Director & Partner

Drew Janes

Managing Director & Partner

Eric Roddy

Managing Director & Partner

Evan Kornack

Managing Director, Private Capital Markets

Felix Mullen

Managing Director

Jack Blomfield

Managing Director and Partner

Jason Sunderson

Managing Director

Jesse Zahoran

Managing Director & Partner

John Peterson

Managing Director

Karl Palasz

Partner, Vice Chairman & Managing Director

Sector & Stage Mix

Industry, funding stage, and valuation band breakdowns.

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SeedSeries ASeries BGrowth

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Investment Activity

Yearly cadence, pace, and funding raised over time.

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2021
2022
2023
2024
2025
2026

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FAQ

Firmographic Details

HeadquartersChicago, Illinois
Year Founded1935

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