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The Marshall Team

William Blair Private Wealth Management

Chicago skyline
  • Brian Marshall

    Brian Marshall

    Partner, Wealth Advisor

    +1 312 364 8109
    View profile
  • Jon Sackett

    Jon Sackett

    Wealth Advisor Associate

    +1 312 364 8433
    View profile
  • mattwilson

    Matthew J. Wilson

    Sales Associate

    +1 312 364 5157
    View profile
  • James Hammack

    James Hammack

    Client Relationship Associate

    +1 312 364 8773
    View profile

About William Blair

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 20 offices worldwide.*

  • 1935

    Year William Blair was founded

  • 1,950+

    Employees worldwide

  • 150 billion+

    Client assets

  • 90 Years

    Independent and employee-owned

  • 20+

    Offices worldwide

  • 650+

    Companies under coverage

As of September 30, 2025
*Includes strategic partnerships with Allier Capital, BDA Partners, and Poalim Capital Markets.

More about William Blair affiliated entities

Thought Leadership

  • Game pieces on a board
    Thursday, October 16, 2025

    Thinking Strategically About Charitable Giving

    Using charitable giving strategies to enhance the tax-efficiency of your donations plays a vital role in maximizing the impact of your gifts.

    Read more
  • Tuesday, September 9, 2025

    Cash-Flow Planning for Retirement

    A five-step guide to generating retirement income efficiently and effectively.

    Read more
  • Wednesday, September 24, 2025

    Keeping Your Financial Information Secure—And Steps to Take if You Have Been Hacked

    As the world becomes more digitally connected, cybersecurity risks will keep rising. Explore our guide to help you keep your financial information secure, recognize digital risks, and identify the next steps to take if your data has been compromised.

    Read more
See more thought leadership

Our Latest News

  • Tuesday, January 20, 2026

    SpryPoint Has Received a Strategic Growth Investment from Insight Partners

    William Blair acted as the exclusive financial advisor to SpryPoint, a Norwest Venture Partners portfolio company, in connection with its strategic growth investment from Insight Partners.

    Read more
  • Friday, January 16, 2026

    Butterfly Equity Has Acquired ePac Flexible Packaging

    William Blair acted as exclusive financial advisor to Butterfly Equity in connection with its acquisition of ePac Flexible Packaging.

    Read more
  • Friday, January 16, 2026

    William Blair Initiates Coverage of Enerpac Tool Group Corp.

    William Blair initiated research coverage of Enerpac Tool Group Corp., a leading manufacturer of hydraulic tooling, controlled-force equipment, and related rental and manpower services.

    Read more
See more news

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This content is for informational and educational purposes only and not intended as investment advice or a recommendation to buy or sell any security. Investment advice and recommendations can be provided only after careful consideration of an investor's objectives, guidelines, and restrictions.

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