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The Vistria Group Names John Atkinson as Operating Partner

May 7, 2026 | By Startuprise io

The Vistria Group, a private investment firm focused on key industries, has announced that John Atkinson has joined its Financial Services team as an Operating Partner.

Atkinson has over 20 years of leadership experience in insurance brokerage, risk management, and human capital services. Most recently, he led one of Marsh’s fastest-growing business units in the U.S. and Canada, building large client-focused platforms in complex insurance markets.

His appointment shows Vistria’s continued focus on insurance as a key investment area, alongside wealth management and its core sectors, such as healthcare, education, and housing. Atkinson will also help support portfolio companies across these areas when needed.

Vistria’s Financial Services portfolio is growing across these themes, including The Mather Group, a national wealth management firm; Daybright Financial, which provides benefits solutions for the K-12 and public sector; and Flores & Associates, a provider of health benefit solutions for small and mid-sized employers.

Atkinson joins Vistria’s Financial Services Operating Partners team, which includes experienced leaders in insurance and financial services, including Albert Benchimol, former CEO of AXIS Capital; Mark Smith, former President of K2 Insurance Services; and Christi Byron, a senior expert in insurance distribution and operations.

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"Insurance is a core area of focus for Vistria, and we see a significant opportunity to invest behind differentiated platforms across brokerage and adjacent segments," said Boris Rapoport, Senior Partner and Co Head of Financial Services. "Johns experience working alongside management teams to drive growth and navigate industry complexity will enhance how we execute on that strategy."

"John is a highly respected leader in the insurance industry with a track record of building, and scaling businesses in complex markets," said Mike Castleforte Senior Partner and Co Head of Financial Services. "His experience, and perspective will be instrumental as we continue to grow our financial services platform and deepen our presence in insurance."

"The insurance industry is evolving rapidly with increasing demand for specialized expertise, and client centric solutions," said Atkinson. "Vistria's thematic approach, and focus on operational value creation position it well to capitalize on these trends and I'm excited to work with the team to support continued growth across the portfolio."

About The Vistria Group

Founded in 2013, by Kip Kirkpatrick and Marty Nesbitt, The Vistria Group is a private investment firm focused on delivering both financial returns and positive social impact by investing in essential sectors like healthcare, education, financial services, and housing. With $17 billion in assets under management, the firm partners closely with companies, using deep industry expertise, operational experience and a strong network to drive long term growth for investors and communities.

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