Gordon Rees Scully Mansukhani (GRSM), the only full-service law firm with attorneys and offices in all 50 states, has been ranked the sixth largest law firm in the United States by Law360, climbing five positions from its No. 11 ranking just one year ago. The ranking marks GRSM’s highest placement ever on the annual list and reflects the firm’s continued growth, national reach, and commitment to delivering exceptional client service across the country.
The ranking comes as GRSM completes a leadership transition with Adam Sugarman taking over as GRSM’s fourth Firmwide Managing Partner from Dion Cominos (who has led the firm since 2006). As Cominos noted, “The firm’s amazing growth over the past two decades is a testament to the vision, dedication, and hard work of many and it is incredibly gratifying to see all these efforts coming to fruition. But we are just getting started, and I am confident that under Adam’s strong leadership, we will witness the achievement of even greater milestones.”
The firm’s rise in the rankings follows another year of strategic growth, including the addition of attorneys in key markets across the country. While the average increase in headcount among the top 100 domestic firms was 4%, GRSM grew by a remarkable 19% in 2025, expanding from 1,493 to 1,776 attorneys. The growth significantly outpaced most of the nation’s largest firms and helped propel GRSM from No. 11 to No. 6 in the rankings.
“Climbing five spots in a single year is an extraordinary achievement and speaks to the strength of our people, our platform, and our vision for the future,” said Firmwide Managing Partner Adam Sugarman. “As we build on this momentum, our focus remains the same: delivering exceptional service to clients, investing in innovation, and creating opportunities for our attorneys and professional staff nationwide.”
Named Partner Miles Scully added, “Our unique 50-state platform has been the primary engine fueling GRSM’s meteoric growth, and it is certain to continue producing even more powerful results into the future.” The firm’s growth trajectory has continued into 2026, with the firm now exceeding 2,000 total attorneys across offices in all 50 states.
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Methodology: Law360 gathered data from U.S. law firms, and vereins or similar structures with a U.S. component, collecting domestic attorney and partner headcount information as of Dec. 31, 2025. Firms based outside the U.S. are not included, and only attorneys based in the 50 states and the District of Columbia were included in the responses. Firms that have shareholders, members or principals in lieu of partners have those numbers listed in the “partner” column.
Firms are ranked by their total number of U.S. attorneys. For firms with identical total U.S. headcounts, Law360 breaks ties by reviewing the percent change in attorney headcount from the previous year or years, if necessary. For the firms where that data is unavailable, Law360 assumes the percent change is zero for the purposes of breaking those ties only.