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William Blair & Company, L.L.C. is a global boutique investment banking and asset management firm. Founded in 1935 and headquartered in Chicago, the employee-owned firm is dedicated to building strong relationships with its clients and providing expert advice and solutions. William Blair focuses on growth-oriented companies across various sectors, including technology, healthcare, consumer, and industrials. Its services encompass M&A advisory, equity and debt financing, equity research, institutional sales and trading, and private wealth management for high-net-worth individuals and families.
The Chicago headquarters serves as the central hub for the firm's global operations, strategic initiatives, investment banking, asset management, and private wealth management leadership.
Located in a modern, award-winning skyscraper along the Chicago River, known for its distinctive architecture, advanced technology, and sustainable design. The building offers panoramic views of the city.
William Blair fosters a collaborative, client-centric, and entrepreneurial work culture. As an employee-owned firm, there's a strong emphasis on integrity, teamwork, excellence, and long-term perspectives in client service and community involvement.
The headquarters in Chicago underscores William Blair's deep roots in the city's financial history and its role as a key player in the U.S. financial markets, while also serving as the command center for its international expansion.
William Blair maintains a significant global presence with offices strategically located across North America, Europe, Asia, and Australia. This international network enables the firm to offer seamless, integrated services worldwide. Key functions supported globally include investment banking (M&A advisory, equity and debt capital markets), asset management (institutional and private wealth management solutions), equity research, and institutional sales and trading, catering to a diverse international client base.
The William Blair Building, 150 North Riverside Plaza
Chicago
Illinois
USA
Address: Devonshire House, 1 Mayfair Place, London, W1J 8AJ, UK
Primary center for EMEA (Europe, Middle East, and Africa) operations, client engagement, and deal origination in the European market.
Address: 11 Madison Avenue, Suite 2700, New York, NY 10010, USA
Strengthens client relationships, deal sourcing, and execution capabilities in the critical U.S. East Coast financial ecosystem.
Address: OpernTurm, Bockenheimer Landstraße 2-4, 60306 Frankfurt am Main, Germany
Expands William Blair's footprint in continental Europe, offering specialized services to DACH-based companies and investors.
Address: Unit 3504, Park Place, 1601 Nanjing Road West, Jing'an District, Shanghai 200040, China
Facilitates access to Asian growth markets and connects Asian enterprises with global capital and strategic partners.
Address: One International Place, Suite 3510, Boston, MA 02110, USA
Serves clients in the innovation-rich New England area, providing specialized financial advisory and wealth services.
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As of April 2025, William Blair' leadership includes:
William Blair has been backed by several prominent investors over the years, including:
William Blair has made several strategic appointments and promotions in the last 12 months to strengthen its capabilities in key growth areas such as financial sponsor coverage and private capital advisory. These moves underscore the firm's commitment to expanding its expertise and client service.
Discover the tools William Blair uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.
William Blair & Company typically uses a standard professional email format. The most common structure is the first initial of the first name followed by the last name.
flast@williamblair.com
Format
jdoe@williamblair.com
Example
92%
Success rate
William Blair Press Release • 2024-04-16
William Blair Investment Management announced the launch of its Emerging Markets ex-China Growth strategy. This new actively managed strategy aims to provide clients with exposure to attractive growth opportunities in emerging markets, excluding China....more
William Blair Press Release • 2024-01-23
William Blair announced the appointments of Daniel Polsky and Scott McLaughlin as managing directors and co-heads of U.S. financial sponsor coverage. This move aims to strengthen the firm's capabilities in serving private equity clients....more
William Blair Press Release • 2023-11-01
William Blair announced that Tom Marking has joined the firm as a managing director and head of Private Capital Advisory, a new business line within the firm’s investment banking platform, focusing on GP-led secondaries and other liquidity solutions....more
William Blair Press Release • 2023-10-10
William Blair announced the opening of a new office in Milan, Italy, furthering its expansion across Europe and enhancing its investment banking presence in the Italian market....more
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