Top 60 accounting firm Doeren Mayhew has expanded into the Atlanta market by combining with AGL CPA Group, a Duluth, GA-based CPA and advisory firm, effective July 16.
Financial terms of the deal weren’t disclosed. AGL, which now operates under the Doeren Mayhew brand, brought over its 20-plus employees to the firm. AGL partner Jay Robbins is now Doeren Mayhew’s managing principal in the region, while AGL’s other partners—Bradley Sienkiewicz, Jim Leutenegger, Justin Bailey, and Daniel Cassandra—join the firm’s leadership team as principals.
Doeren Mayhew says the transaction establishes its presence in the region with a new Duluth office and strengthens the capabilities of several practice areas, including tax, audit, transaction advisory, CFO advisory, manufacturing, construction, real estate, and professional services. The Troy, MI-based accounting firm adds that it will capitalize on AGL’s vast technology, broker-dealer, and alternative investments sector experience to expand its industry reach.

“Finding the right strategic partner in the Atlanta community was an important part of our vision for growth in the Southeast,” Doeren Mayhew CEO Chad Anschuetz said in a statement. “AGL’s established presence of reputable work and technical expertise will accelerate our growth trajectory in this pivotal international hub. We are excited to welcome the AGL team to the Doeren Mayhew family, and we look forward to serving the local community with them by our side.”
Founded in 2006, AGL serves a diverse client base of closely held businesses and high-net-worth individuals with consulting, tax, and attestation services.
“We’re thrilled to join Doeren Mayhew. Culture was the most important factor in finding a partner to grow alongside,” said Sienkiewicz, AGL’s co-founder and managing partner. “Doeren Mayhew shares a common culture of excellence, great people, and bullish vision for the future. Combining forces seems like a natural progression for AGL. It gives us the dynamic platform to provide expansive resources and solutions to our clients while providing unparalleled career opportunities to our team.”
Alan Koltin, CEO of Koltin Consulting Group, who advised both firms on the combination, said in a statment, “Expanding into the Atlanta market was a high priority for Doeren Mayhew, and they found the perfect firm in AGL! AGL is young, entrepreneurial, and has a great reputation in the technology space. Doeren Mayhew has had significant success in executing on its M&A and lateral talent strategies.”
Doeren Mayhew is among the accounting firms that have received an infusion of capital from a private equity firm, selling a stake last year to Audax Private Equity. Doeren Mayhew said in late August 2024 that the investment will allow it to broaden its geographic footprint via continued acquisitions, as well as to enhance its service offerings, technology infrastructure, and overall employee and client experience.
- Related article: Doeren Mayhew Inks Deal With Private Equity Firm Audax
Doeren Mayhew now operates in an alternative practice structure: Doeren Mayhew Assurance provides attest services as a licensed CPA firm, while Doeren Mayhew Advisors LLC provides business advisory, tax, and non-attest services. Collectively, these entities and its subsidiaries continue under the brand name Doeren Mayhew.
The firm’s last M&A deal was earlier this month when it acquired Houston CPA firm Reimer McGuinness Hess CPAs & Advisors. Doeren Mayhew also recently acquired Grand Rapids, MI-based accounting firm Benoit & Associates CPAs, Vanessa Solá’s practice of Frierson, Solá, Simonton & Kutac in Houston in June, and Draper Bialik & Company CPAs in Grand Haven, MI.
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