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Sean Gardner

Sean Gardner

Managing Director, Financial Sponsors Group

New York skyline

About Sean

Sean Gardner is a partner and managing director for William Blair based in the firm’s New York office. He originally joined William Blair's investment banking team in 2015. Before joining William Blair, he worked for Credit Suisse, American Securities Capital, and Merrill Lynch.

Board Membership

Finance Committee, Convent Ave. Baptist Church
Momentum Golf & Education

Notable Transactions

  • Not Disclosed

    a portfolio company of WCAS

    has been acquired by

    June 2024

  • $410,000,000

    a portfolio company of GreyLion Partners

    has been acquired by

    May 2024

    William Blair acted as the exclusive financial advisor to MTL Holdings, a portfolio company of GreyLion Partners, in connection with its pending sale to Carlisle Companies, Inc (NYSE: CSL).

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  • Not Disclosed

    have acquired

    May 2024

    William Blair acted as the exclusive financial advisor to private equity funds affiliated with Blackstone and Vista Equity Partners in connection with their pending acquisition of Energy Exemplar.

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  • Not Disclosed

    has made a strategic
    investment in

    a portfolio company of
    Northlane Capital Partners

    April 2024

  • Not Disclosed

    a portfolio company of MidOcean Partners

    has acquired

    March 2024

    William Blair acted as exclusive financial advisor to Zonda, a portfolio company of MidOcean Partners, in connection with its acquisition of Builders Digital Experience.

    Read more
  • Not Disclosed

    a portfolio company of
    Vestar Capital Partners

    has been acquired by

    November 2023

  • Not Disclosed

    a portfolio company of Kohlberg & Co.

    has been acquired by

    June 2023

    William Blair acted as the lead financial advisor to U.S. Retirement and Benefits Partners, a portfolio company of Kohlberg & Company, in connection with its sale to the Vistria Group.

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  • Not Disclosed

    a portfolio company of
    Arsenal Capital Partners

    has been acquired by

    March 2023

  • Not Disclosed

    a portfolio company of Clarion Capital Partners, LLC

    has been acquired by

    December 2022

    William Blair acted as the exclusive financial advisor to Madison Logic, a portfolio company of Clarion Capital, in connection with its acquisition by BC Partners.

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  • Not Disclosed

    has been acquired by

    November 2022

  • Not Disclosed

    a portfolio company of Behrman Capital

    has been acquired by

    August 2022

  • Not Disclosed

    a portfolio company of Apax Partners

    has been acquired by

    a portfolio company of TA Associates

    June 2022

    William Blair acted as the exclusive financial advisor to MyCase, a portfolio company of Apax Partners, in connection with its acquisition by AffiniPay, a portfolio company of TA Associates and the parent company of LawPay.

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  • Rigorous pursuit of your success. Every transaction. Every time.

    Our investment bankers are 100 percent committed to your organization’s sustained success. By drawing on our deep industry and product experience as well as our dedicated global resources, we provide advisory and financing services that allow you to capitalize on today’s opportunities and anticipate tomorrow’s challenges.

    More about investment banking at William Blair
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    Financial Sponsors

    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
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    About William Blair

    William Blair is a premier global boutique 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.*

    • 1935

      Year William Blair was founded

    • 1,900+

      Employees worldwide

    • 149 billion+

      Client assets

    • 89 Years

      Independent and employee-owned

    • 20+

      Offices worldwide

    • ~650

      Companies under coverage

    As of September 30, 2024
    *Includes strategic partnerships with Allier Capital, BDA Partners, and Poalim Capital Markets.

    More about William Blair affiliated entities

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