Norlantic Capital Co-Invests in Stephano Slack Alongside Madison Dearborn Partners

New York, NY, June 10, 2026 - Norlantic Capital today announced its participation as a co-investor in a strategic growth investment in Stephano Slack, a premier accounting and advisory firm. The investment is led by funds managed by Madison Dearborn Partners ("MDP"), a leading private equity investment firm based in Chicago. The partnership will accelerate Stephano Slack's strategic plan and support its long-term vision of investing in talent, embracing innovation, and creating opportunities for clients and team members alike.

Stephano Slack will continue to be led by its existing leadership team, including CEO and Managing Partner Michael Stephano. The firm will continue its focus on delivering excellence to a growing client base while executing on the firm's operational and growth priorities. Jim Brady, a forty-five-year industry veteran and former COO of Grant Thornton, will join Stephano Slack as Executive Chairman. Jim brings a proven track record, from Grant Thornton as well as thirty years at Deloitte, of developing talent and scaling accounting and advisory organizations through periods of transformational growth.

Founded by Michael Stephano in 2004, Stephano Slack provides a full range of tax, audit, outsourced accounting, and advisory services to a diverse base of middle-market clients. Stephano Slack was recently named one of Accounting Today's Fastest-Growing Firms of 2026, highlighting the firm's consistent track record of growth and its culture of excellence. Over more than two decades, Stephano Slack has remained committed to a client-first approach while delivering sustainable growth and successfully integrating seven strategic acquisitions.

"Our partnership with MDP, a firm that understands and embodies our commitment to exceptional relationship-driven client service, adds a compelling new growth driver to the Stephano Slack platform," said Michael Stephano, CEO and Managing Partner at Stephano Slack. "MDP's support will pave new avenues for Stephano Slack to grow and diversify our platform and will foster opportunities for both our clients and employees."

Following the close of the transaction, Stephano Slack will operate in an alternative practice structure. Stephano Slack, LLC, a licensed CPA firm, will provide attest services, and Stephano Slack Advisory, LLC will provide tax, business advisory and other non-attest services.

Freshfields LLP provided legal counsel to Norlantic Capital.

Read the full press release here.

About Norlantic Capital

Norlantic Capital is a specialized, cross-border private equity firm that exclusively targets the U.S. middle market - one of the most dynamic, diversified, and growing segments of the asset class. It provides a new generation of alternative investors exposure to this market by investing in top-tier managers through its broadly diversified fund, complemented by its direct and custom investment strategies. Backed by leading institutional investors, Norlantic is headquartered in New York with strategic operations in Dublin. For more information, please visit www.norlantic.com.

About Madison Dearborn Partners

Madison Dearborn Partners, LLC ("MDP") is a leading private equity investment firm based in Chicago. Since MDP's formation in 1992, the firm has raised aggregate capital of more than $36 billion and has completed over 160 platform investments. MDP actively invests across three dedicated industry verticals, including financial services, healthcare, and technology & government. Drawing on deep industry and operational expertise, MDP works closely with management teams to drive value creation and operational improvement across its portfolio. For more information, please visit https://www.mdcp.com.

About Stephano Slack LLC

As a leading accounting and advisory firm, Stephano Slack offers a full range of tax, audit, outsourced accounting and advisory services to clients. Specializing in privately owned, middle-market companies, the firm offers timely, reliable financial information, along with creative business and tax strategies that help clients achieve their financial goals. Stephano Slack is dedicated to fostering strong client relationships through industry events, webinars, seminars, and newsletters. For more information, please visit https://www.stephanoslack.com.