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About Mike

Mike Sirvinskas, a partner of William Blair & Company, has more than 25 years of experience managing portfolios. He joined the firm in 1993 and became a partner in 2005. Mike serves on Private Wealth Management’s model portfolio committee, a team of senior wealth advisors who meet regularly to create and monitor the group’s model portfolio, which serves as a resource in building customized client portfolios. He and his wife have three children and reside in Park Ridge, Illinois, where they are active with various civic and charitable institutions. Mike is an Eagle Scout. Education: B.S. in industrial distribution management, University of Illinois.

Professional Recognition and Awards

  • Forbes Best-in-State Advisors 2021, 2022, 2023, 20241

1 The Forbes ranking algorithm is based on industry experience, interviews, compliance records, assets under management, revenue and other criteria by SHOOK Research, LLC, which does not receive compensation from the advisors or their firms in exchange for placement on a ranking. Investment performance is not a criterion.

Mike and his team offer a comprehensive, no-nonsense approach to wealth management. They work to provide a high degree of comfort to wealthy families, corporate officers, and charitable institutions with their measured and logical approach to preserving and growing assets

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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.*

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Year William Blair was founded

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Employees worldwide

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142 billion+

Client assets

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89 Years

Independent and employee-owned

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Offices worldwide

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Companies under coverage

As of March 31, 2024
*Includes strategic partnerships with Allier Capital, BDA Partners, and Poalim Capital Markets.

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