Prosperity Partners Announces Strategic Investment from Lightyear Capital

CHICAGO--(BUSINESS WIRE)--Prosperity Partners (“Prosperity” or “the Company”), a Chicago-headquartered tax, client accounting, and transaction support services business, announced today that it is receiving a majority growth investment from Lightyear Capital (“Lightyear”), a New York City-based private equity firm. Unity Partners (“Unity”), who invested in Prosperity in April of 2023, will maintain a minority position in the Company.

Founded in 2003, Prosperity has grown into a national platform delivering tax advisory, client accounting and transaction support services to high-net-worth individuals, family offices and entrepreneurial businesses nationwide. With more than 250 employees and offices in Chicago, New York City, Iselin, Houston, Washington D.C., Santa Barbara, Detroit, Kansas City and Burlington, Prosperity has been recognized as one of Accounting Today’s “Fastest Growing Firms” and received several “Best Place to Work” honors.

Mark Vassallo, Managing Partner, Lightyear Capital, says, “Prosperity marks Lightyear’s seventh investment in tech-enabled business services. Our strategy is to partner with strong management teams of growing companies and help them continue to institutionalize their businesses, accelerate their growth organically and inorganically, and create enduring enterprise value. We are excited about our acquisition of Prosperity given the strong growth tailwinds in the high-net-worth space, and Prosperity’s sterling reputation. We look forward to supporting the Prosperity team to further their capabilities in the years ahead.”

Jay Comerford, Partner at Lightyear, says, “Prosperity operates in a growth market, is a differentiated company with highly recurring revenue and outstanding client relationships, and is run by an impressive leadership team. The Company has developed a specialized model delivering sophisticated advice to a highly-desirable client base, positioning itself as a leader in the fast-growing high-net-worth advisory market. We are excited to partner with Jeremy, the entire Prosperity team, and Unity to help drive continued growth through investments in talent, best-in-class automation and technology solutions, and strategic M&A.”

“As we enter our next stage of growth supported by the outstanding Lightyear team, we are eager to pursue our lofty strategic goals and to continue to provide premier services to high net-worth individuals, family offices and closely held businesses,” said Jeremy Dubow, CEO and Co-Founder of Prosperity. “With significant employee growth and enhancements to key processes, systems and services, I am extremely proud of everything we have achieved alongside Unity Partners and am ecstatic for our employees to reap the rewards of our Employee Purpose Plan.”

Launched concurrently with Unity’s initial investment in Prosperity, the Prosperity Employee Purpose Plan, a broad-based employee ownership program, will distribute approximately $18 million in proceeds across the employee base. Lightyear and Prosperity have agreed to continue an employee ownership program for qualifying employees.

“We thank Jeremy and the team for all we accomplished together over the past three years, from completing nine strategic add-ons, expanding service lines, and making significant investments in technology and offshoring, to rebranding as Prosperity Partners to better capture the Company’s mission and purpose,” said Peter Cozzi, Investment Team Lead at Unity Partners. “It is wonderful to see Prosperity’s outstanding team rewarded for their hard work and dedication through the Employee Purpose Plan, and we look forward to Prosperity’s continued growth and success.”

Allan Koltin, founder of Koltin Consulting Group, Inc., who advised Prosperity on the transaction, added “Prosperity, one of the first accounting firms to partner with private equity, in just over three years, has grown from a small, sophisticated tax business into a national platform offering a full suite of services to an incredible client base. The partnership with Lightyear will elevate Prosperity’s brand and position it to be one of the best accounting, tax and advisory businesses in the country. From their initial meeting, it was clear that Prosperity and Lightyear were aligned on their strategic goals and would be incredible partners.”

Guggenheim Securities, LLC served as lead financial advisor to Prosperity and Unity, with Koltin Consulting Group serving as an additional financial adviser to both parties. Kirkland & Ellis LLP served as legal counsel for Prosperity, and Davis Polk served as legal counsel for Lightyear. The transaction is expected to close in the third quarter of 2026, subject to customary regulatory approvals. Terms of the investment were not disclosed.

About Prosperity Partners
Prosperity Partners is a best-in-class tax and accounting firm serving dynamic businesses, high net-worth individuals and family offices throughout the United States. With offices in Chicago, New York City, Iselin, Houston, Kansas City, Santa Barbara, Detroit, Washington D.C. and Burlington, and a growing team of talented professionals, Prosperity provides tax advisory, tax consulting, tax preparation, valuation, outsourced back-office accounting, fractional CFO, litigation support and start-up business services. For more information, visit prosperityllc.com.

About Lightyear
Lightyear Capital is a New York-based private equity firm that partners with growing companies at the nexus of financial services and technology, healthcare and business services. For over 25 years, Lightyear has worked closely with management teams and leveraged its industry expertise, network of advisors and operating resources to help accelerate growth and build market-leading businesses. Lightyear has significant experience across fintech, insurance, brokerage, healthcare, payments and technology-enabled services. As of December 31, 2025, the firm had assets under management of approximately $8.1 billion. For more information, please visit www.lycap.com.

About Unity Partners
Unity Partners is a principles-based private equity firm that partners investors and operators to build better together, measured by the economic surplus we create and share with all stakeholders. Our principles provide a foundation to build great people-based services and technology organizations that impact thousands of lives. We deploy our Partner & Propel strategy to identify opportunities to partner with ambitious leaders to accelerate growth, unlock the benefits of platform scale through mergers and acquisitions and propel value acceleration through investments in people, processes and operational levers. For more information, visit unitypartnerslp.com.