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Dan Connolly

Daniel Connolly

Managing Director, Co-Head of M&A

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About Dan

Dan Connolly is a managing director and co-head of global M&A for William Blair based in the firm’s Chicago office. He joined William Blair’s investment banking team in 1999 where he has previously served as head of technology M&A and head of software banking. Prior to William Blair, he worked for Merrill Lynch & Co. and Kidder, Peabody.

Community Involvement

Chicago Jesuit Academy Board of Directors
Chicago Archdiocese Assembly of Catholic Professionals
University of Notre Dame Wall Street Leadership Committee

Awards & Affiliations

Global M&A Network – 2023 Top 50 M&A Investment Bankers
Mergers & Acquisitions – 2019 Deal of the Year for the Middle Market – Fortive’s acquisition of Gordian
The Deal – 2019 Deal of the Year – Trimble's acquisition of e-Builder

Notable Transactions

  • $1,875,000,000

    a portfolio company of Clearlake Capital

    has been acquired by

    August 2022

    William Blair acted as lead financial advisor to Brightly Software, Inc. (Brightly), a portfolio company of Clearlake Capital Group, L.P. (Clearlake), in connection with its sale to Siemens AG (Siemens) (FRA:SIE) for $1.575 billion of upfront cash consideration, along with $300 million in cash earn-out payments, for a total of $1.875 billion.

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  • Not Disclosed

    a portfolio company of New Mountain Capital

    has received a strategic growth investment from

    May 2022

  • Not Disclosed

    has received a strategic growth investment from

    March 2022

    William Blair acted as the exclusive financial advisor to Lightspeed Systems in connection with its strategic growth investment from Genstar Capital, joining existing investor Madison Dearborn Partners.

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  • $5,400,000,000

    has acquired

    a portfolio company of Francisco Partners

    February 2022

  • $1,425,000,000

    a portfolio company of Clearlake Capital

    has been acquired by

    December 2021

  • Not Disclosed

    a portfolio company of Ares Management

    has received a partnership investment from

    December 2021

    William Blair acted as lead financial advisor to Convergint Technologies, a portfolio company of Ares Management Corporation (NYSE: ARES), in connection with its equity sale from a fund managed by Ares’ Private Equity Group and other existing shareholders to Leonard Green & Partners, L.P. and funds managed by Harvest Partners, LP.

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  • Not Disclosed

    a portfolio company of Warburg Pincus and JMI Equity

    has received a majority investment from

    December 2021

    William Blair acted as the exclusive financial advisor to Businessolver, a portfolio company of Warburg Pincus and JMI Equity, in connection with its majority investment from Stone Point Capital.

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  • Not Disclosed

    a portfolio company of Hg & Vista Equity Partners

    has been acquired by

    a portfolio company of Five Arrows Principal Investments & TA Associates

    September 2021

    William Blair acted as financial advisor to Allocate, a portfolio company of Hg and Vista Equity Partners (Vista), in connection with its pending sale to RLDatix, a portfolio company of Five Arrows Principal Investments and TA Associates.

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  • Not Disclosed

    a portfolio company of Clearlake Capital

    has received a significant strategic investment from

    September 2021

  • Not Disclosed

    has received a significant investment from

    July 2021

  • $2,750,000,000

    has been acquired by

    February 2021

  • Not Disclosed

    has received a joint investment from

    January 2021

    William Blair acted as exclusive financial advisor to Granicus, Inc. (Granicus), a portfolio company of Vista Equity Partners, in connection with its pending investment from Harvest Partners and Vista’s Foundation Fund IV.

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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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    Mergers & Acquisitions

    Publicly traded and privately held companies around the globe count on our M&A Advisory Group for comprehensive financial advisory services and expert guidance. We serve buyers and sellers by providing in-depth financial and strategic analysis, identifying optimal potential transaction partners, developing creative deal structures, and negotiating complex transaction terms.

    Our long record, leadership position in the middle market, and high level of transaction activity enable us to clear the market globally in search of the best transaction partners. Our bankers are true experts in your industry and understand the competitive landscape and deal environment facing our clients.

    More about our M&A 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.

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