Prosperity Partners Acquires Danaher Attig & Plante in Vermont

Mergers and Acquisitions | June 4, 2025

Prosperity Partners Acquires Danaher Attig & Plante in Vermont

The private equity-backed tax and accounting firm has entered Vermont after acquiring Danaher Attig & Plante, a South Burlington-based public accounting firm.

Jason Bramwell

Private equity-backed tax and accounting firm Prosperity Partners said on June 4 that it has acquired Danaher Attig & Plante, a South Burlington, VT-based public accounting firm.

Financial terms of the deal weren’t disclosed. The move establishes Prosperity’s presence in “The Green Mountain State.”

Founded in 2005 and led by Cathy Attig and Matt Johnson, DAP provides tax advisory and compliance services to individuals, businesses, trusts, estates, and other organizations. The current partners of DAP will remain actively involved in the combined business.

Jeremy Dubow

“We couldn’t be more excited to add the DAP team to Prosperity,” Jeremy Dubow, CEO and co-founder of Prosperity, said in a statement. “Cathy and Matt have earned a stellar reputation in their market, built on two decades of DAP delivering the highest-quality tax services to their clients. They have a great team and a complementary service offering that will benefit the Prosperity platform.”

Founded in 2003 as NDH Advisors by three Arthur Andersen alums, Chicago-based Prosperity Partners received an equity investment from Unity Partners, a Dallas-based private equity firm, in 2023. Since then, Prosperity Partners has added offices in Kansas CityHouston, Philadelphia, Santa Barbara, CA, Detroit, and Washington, D.C.

Prosperity Partners serves businesses, high net-worth individuals, and family offices throughout the U.S. The firm provides tax advisory, tax consulting, tax preparation, valuation, outsourced back-office accounting, fractional CFO, litigation support, and startup business services.

All DAP employees will become part of Prosperity’s Employee Purpose Plan, a broad-based employee ownership program that allows qualifying employees to benefit from the firm’s success.

“Prosperity Partners impressed us with their history of growth, dedication to building an integrated firm with scalable systems, and focus on employee and client success,” Attig said. “Prosperity is the right cultural and strategic fit for DAP and its employees, and our clients will benefit from being part of this organization as we continue to provide tax and advisory services to them at the high level of service they are accustomed to.”

“We’re thrilled to have DAP join the Prosperity platform,” added Peter Cozzi, team lead at Unity Partners. “With strong alignment on Prosperity’s mission and ambitions of providing the best client service, we’re excited for the opportunities that will come from this partnership.”

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