Gordon Rees Scully Mansukhani
Professional services
UnclaimedGordon Rees Scully Mansukhani is a United States-based AmLaw 100 law firm providing nationwide litigation and business-transactions services.
Last updated August 26, 2026
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Overview
Gordon Rees Scully Mansukhani, commonly known as Gordon Rees or GRSM, is a national United States law firm headquartered in San Francisco, California. The firm was established in 1974 by Stuart Gordon and Donald Rees under the name Gordon & Rees. It developed from a San Francisco practice into a nationwide legal-services organization serving public and private companies across a broad range of disputes, regulatory matters, and commercial transactions. The firm expanded its formal name in 2014 to Gordon Rees Scully Mansukhani, recognizing named partners Miles Scully and Roger Mansukhani. The shortened GRSM identity is now used alongside the longer legal name. Its practice model emphasizes the combination of a large national platform with locally based lawyers and offices. The firm presents this structure as offering the resources and geographic reach of a full-service national firm while retaining knowledge of regional courts, industries, and business environments. GRSM works in litigation and transactional areas that include commercial disputes, construction, insurance, product liability and mass torts, transportation and maritime matters, banking and finance, and other business-related legal services. Its clients include companies operating in regulated, technical, and litigation-intensive sectors. The firm’s practice profile is therefore oriented toward institutional and commercial clients rather than consumer-facing legal work. A major expansion milestone came in 2019, when the firm opened an office in Hawaii. The firm stated that this gave it offices in all 50 U.S. states and described itself as the first law firm in the nation to achieve that footprint. The national-office strategy is central to the brand: rather than relying primarily on international offices, GRSM has focused on comprehensive coverage of the U.S. market. The firm has been described as an AmLaw 100 law firm and has been recognized in rankings and surveys covering size, growth, practice quality, and diversity. The supplied reference material describes GRSM as having more than 2,000 lawyers practicing in all 50 states and as one of the largest U.S. law firms by headcount. Recognition has included listings by Law360, The American Lawyer, the National Law Journal, Chambers USA, U.S. News, Bloomberg Law, and Construction Executive. These rankings cover both overall scale and individual practices, including construction law, insurance, commercial litigation, product liability, banking and finance, and transportation litigation. GRSM has also highlighted workplace diversity and inclusion as part of its institutional profile. The firm has received recognition from legal-industry publications for progress in diversity and has reported repeated top scores on the Human Rights Campaign Foundation’s Corporate Equality Index, including a 100 score since 2016 according to the supplied material. Its brand positioning consequently combines national reach, litigation and transactional breadth, industry-focused legal knowledge, and an emphasis on professional and workplace inclusion.
History
Gordon Rees Scully Mansukhani originated in San Francisco in 1974, when Stuart Gordon and Donald Rees founded a law partnership called Gordon & Rees. The firm’s early identity was associated with its California base, but its longer-term development followed a national expansion strategy. It built practices serving companies in litigation-heavy and commercially regulated industries, gradually extending its geographic coverage and professional capabilities beyond its original market. In 2014, the firm adopted the expanded name Gordon Rees Scully Mansukhani. The change recognized Miles Scully and Roger Mansukhani as named partners and created the formal name that remains associated with the organization. Gordon Rees and the abbreviated GRSM name continued to be used as practical references to the firm. Under firmwide managing partner Dion Cominos, who had joined the firm in 1987, GRSM pursued a broad U.S. office network. A defining milestone occurred in 2019, when the firm opened an office in Hawaii. The addition completed what the firm described as a presence in all 50 states and supported its claim to be the first U.S. law firm to establish offices nationwide. This geographic model became a central part of its market identity, allowing the firm to offer national coordination while emphasizing lawyers’ familiarity with local jurisdictions. GRSM’s business covers both contentious and non-contentious legal work. Its litigation practices include general commercial disputes, insurance matters, construction disputes, product liability and mass torts, and transportation and maritime litigation. Its transactional and advisory work includes business transactions, banking and finance, and related corporate and industry-specific services. The combination gives the firm a full-service profile for public and private companies that need legal support across multiple jurisdictions and practice areas. The firm has received recognition from several legal and professional publications. The supplied reference material identifies AmLaw 100, Law360, National Law Journal, Chambers USA, U.S. News, Bloomberg Law, and Construction Executive among the organizations that have recognized the firm or its practices. Those recognitions have addressed national size, organic growth, individual practice areas, and construction-law strength. The firm has also been recognized in diversity-related assessments, including rankings and reports from legal-industry publications and repeated perfect scores on the Human Rights Campaign Foundation’s Corporate Equality Index since 2016, according to the supplied material. Leadership changed in 2026, when Adam Sugarman succeeded Cominos as firmwide managing partner. The transition followed Cominos’s stated 2006–2026 tenure in the role. In its current form, GRSM is characterized by a nationwide U.S. platform, a large lawyer headcount, broad litigation and business-services coverage, and a positioning strategy that combines national scale with local legal knowledge.
- 2026
Adam Sugarman becomes managing partner
[1]Adam Sugarman succeeded Dion Cominos as firmwide managing partner.
- 2019
Hawaii office completes nationwide coverage
[1]The firm opened its Hawaii office and stated that it had offices in every U.S. state.
- 2014
Firm name expanded
[1]The organization adopted the name Gordon Rees Scully Mansukhani, adding Miles Scully and Roger Mansukhani as named partners.
- 2006
Dion Cominos becomes firmwide managing partner
[1]Dion Cominos began the firmwide managing-partner tenure identified in the supplied reference material.
- 1974
Firm founded as Gordon & Rees
[1]Stuart Gordon and Donald Rees founded the law firm in San Francisco under the name Gordon & Rees.
Products and positioning
A nationwide U.S. law firm positioned between a large full-service national practice and a locally knowledgeable regional firm, with particular strength in litigation, insurance, construction, product liability, transportation, and business transactions.
Legal services
Commercial Litigation
GRSM represents businesses in commercial disputes and general business litigation. The practice is part of the firm’s broader nationwide platform and supports public and private companies in matters requiring coordination across jurisdictions.
Legal services
Construction Law
The construction practice addresses legal issues affecting construction projects and participants, including disputes and related counseling. Construction Executive ranked GRSM among the leading construction law firms in the United States in 2024, according to the supplied reference material.
Legal services
Insurance and Insurance-Dispute Services
GRSM advises and represents insurers and other clients in insurance matters, including insurance disputes and coverage-related litigation. Chambers USA recognition cited in the supplied material includes insurance and insurer dispute-resolution categories.
Legal services
Product Liability and Mass-Tort Defense
The firm provides defense and litigation services in product-liability and mass-tort matters. This work is suited to companies facing claims across multiple jurisdictions and requiring coordinated national representation.
Legal services
Banking, Finance, and Business Transactions
GRSM’s transactional offering includes business services and banking and finance work for companies and other institutional clients. The practice complements its litigation capabilities and supports clients’ ongoing commercial operations.
Legal services
Transportation and Maritime Litigation
The firm handles transportation-related disputes, including shipping and maritime litigation. This practice serves industries in which incidents, contracts, insurance, and regulatory obligations may span multiple states or jurisdictions.
Brand decisions
2026
Leadership transition to Adam SugarmanOtherBackground
Dion Cominos’s firmwide managing-partner tenure concluded after the period identified in the supplied reference material.
Action taken
Adam Sugarman assumed the firmwide managing-partner role.
Aftermath
The transition marked a change in firmwide leadership while the firm continued operating under the GRSM identity.
2019
Completed a 50-state office footprintStrategyBackground
The firm pursued a nationwide office strategy intended to combine national resources with local legal knowledge.
Action taken
GRSM opened an office in Hawaii, completing its stated presence in all 50 U.S. states.
Aftermath
The nationwide footprint became a prominent part of the firm’s positioning and market differentiation.
2014
Adopted the Gordon Rees Scully Mansukhani nameStrategyBackground
The firm expanded its formal name as part of its continuing institutional development and recognition of additional named partners.
Action taken
It added Scully and Mansukhani to the firm name while continuing to use Gordon Rees and GRSM as shorter identifiers.
Aftermath
The expanded name became the firm’s formal identity and supported the GRSM abbreviated brand.
Sources2 sources
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