Follow-on Offering
March 2026
Managing Director, Head of Financial Sponsors Group

Brandon Lower, partner, is a managing director and head of William Blair’s Financial Sponsors Coverage group. Brandon leads a team focused on providing financial sponsors with highly-relevant and differentiated strategic advice, including a full-suite of M&A, capital markets, and GP-advisory solutions. Brandon draws on extensive M&A experience, as well as public and private equity transaction experience, having completed more than 200 transactions.
Brandon is based in the firm’s New York office. He originally joined William Blair’s investment banking team in 1997 and rejoined in 2000. Brandon previously worked for Bowles Hollowell Conner & Co. and Dean Witter Reynolds.
M&A Advisor - 2012 40 Under 40 M&A Advisor Award
Follow-on Offering
March 2026
Initial Public Offering
December 2025
have acquired
December 2025
a portfolio company of Berkshire Partners
has received a significant
minority investment from
October 2025
a portfolio company of Francisco Partners
has received a strategic growth investment from
May 2025
has acquired
December 2024
William Blair acted as financial advisor to OMERS Private Equity in connection with its acquisition of Integris.
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a portfolio company of AEA Investors
has been acquired by
a portfolio company of
Arcline Investment Management
November 2024
William Blair acted as financial advisor to Process Sensing Technologies, a portfolio company of AEA Investors, in connection with its sale to DwyerOmega, a portfolio company of Arcline Investment Management.
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a portfolio company of
New Mountain Capital
has received a strategic
minority investment from
November 2024
a portfolio company of Harvest Partners
has received a growth
investment from
August 2024
William Blair acted as financial advisor to Service Express, a portfolio company of Harvest Partners, in connection with its growth investment from Warburg Pincus.
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has received a
strategic investment from
June 2024
a portfolio company of Stone Point Capital
has been acquired by
April 2024
a portfolio company ofWarburg Pincus and TA Associates
has been acquired by
February 2024
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More about investment banking at William Blair
William Blair's Financial Sponsors Group is focused on developing and institutionalizing relationships with leading private equity firms around the world. Many of these relationships have been developed for over two decades providing us with senior-level access and credibility with the key decision-makers at each private equity firm. With over 295 successful sales to financial sponsors since 2015, we have proprietary insights into each financial sponsor's unique investment criteria, approach, and behavior. Our team's highly-relevant experience with and relevance to the private equity community uniquely positions William Blair to deliver exceptional results for our M&A sell-side clients.
More about our financial sponsors expertise
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.*
Year William Blair was founded
Employees worldwide
Client assets
Independent and employee-owned
Offices worldwide*
Companies under coverage
As of March 31, 2026
*Includes strategic alliances with Allier Capital, BDA Partners, and Poalim Equity Ltd.
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