What Sullivan & Cromwell LLP does

Sullivan & Cromwell LLP is a privately held, New York-headquartered global law firm founded in 1879, operating as a single partnership across 13 offices in the United States, Europe, Asia, and Australia. The firm employs more than 1,000 lawyers and serves a client base spanning industrial and commercial companies, financial institutions, private funds, governments, educational and cultural institutions, and high-net-worth individuals. Its service mix is concentrated in complex, high-stakes matters: cross-border and domestic M&A, securities and commercial litigation, corporate investigations, capital markets and finance transactions, restructuring, antitrust and regulatory work, tax planning, and estate planning, with newer dedicated practices in Artificial Intelligence and Digital Infrastructure advising on AI compute, data center, and emerging-technology transactions.

The firm generates revenue through professional services fees on these engagements; pricing is matter-specific and not publicly disclosed. Distribution is direct and relationship-driven — services are delivered through engagement letters, with cross-office teams assembled around transaction or matter scope. S&C differentiates via a hire-and-promote-from-within model that produces a partnership with broad generalist training and deep institutional tenure, a brand anchored in 140+ years of precedent-setting work, and a unified non-geographically-divided structure that supports seam-intensive cross-border execution. The firm currently leads Bloomberg Law's and GlobalData's M&A league tables, having advised on over $540 billion in announced global deals in Q1 2026 representing a 35.4% market share, including the $1.25 trillion SpaceX/xAI combination and Broadcom's $35 billion AI compute capital solution with Apollo and Blackstone.

The firm's structure is a limited liability partnership under New York law with no parent company, external investors, or subsidiaries; ownership is held by its partners, the majority of whom are internally promoted from the associate ranks. Recent strategic activity has emphasized offensive moves — new practice launches (Digital Infrastructure, AI), senior lateral hiring (notably a cluster of London private-capital partners), and capture of the largest AI-related transactions of 2025-2026 — alongside defensive positioning in regulatory and sovereign-dispute work (notably the $18 billion YPF judgment reversal for Argentina). No funding rounds, IPOs, or M&A transactions involving the firm itself appear in the data.

Name

Sullivan & Cromwell LLP

Legal name

Sullivan & Cromwell LLP

Website

https://sullcrom.com

Company type

Private

Founded year

1879

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Sullivan & Cromwell LLP is a privately held, New York-based global law firm founded in 1879 with 13 offices and 1,000+ lawyers serving corporates, financial institutions, private funds, governments, and individuals on complex cross-border M&A, litigation, capital markets, and regulatory matters.

Ownership category

akta.pro rank

Product category

Legal Services

NAICS

Offices of Lawyers (541110), Legal Services (5411)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Strategic Partnerships, Alliances & JVs Advisory (BPAHADAI)

Keywords

• Corporate legal services
• Mergers acquisitions advisory
• Capital markets counsel
• Litigation investigations
• Tax estate planning

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices13 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Others

Revenue model

1. Legal Services: Sullivan & Cromwell provides legal advice and representation across M&A, litigation, corporate investigations, finance transactions, antitrust, regulatory, tax, and estate planning matters. Revenue is generated through professional services fees from client engagements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Sullivan & Cromwell is a global law firm providing legal advisory and representation services across major practice areas, including domestic and cross-border mergers and acquisitions, complex litigation and corporate investigations, equity and debt capital markets transactions, financial services regulation, restructurings and special situations, tax planning and controversy, antitrust, and estate planning. The firm delivers these services through 13 offices in leading financial centers across the United States, Europe, Asia, and Australia, operating as a single partnership without geographic division and assembling cross-border teams on a matter-by-matter basis for clients such as SpaceX, xAI, Merck KGaA, the U.S. Department of Energy, and the Republic of Argentina.

Product overview

Sullivan & Cromwell LLP is a global law firm providing legal services across multiple practice areas rather than a technology product company. The firm offers a unified platform of legal advisory services encompassing Mergers & Acquisitions, Litigation & Investigations, Capital Markets, Financial Services, Restructuring & Special Situations, Tax, an Artificial Intelligence Practice, and a Digital Infrastructure Practice. These practice areas work collaboratively on complex transactions and matters, with the firm particularly noted for its work advising on major technology and AI-related transactions. The firm also produces thought leadership content through its S&C Critical Insights podcast series and maintains offices across major financial centers in Asia, Australia, Europe, and the United States.

Differentiator

Problem solved

Functional benefit

Products and services

• Legal Services - Mergers & Acquisitions Advisory on domestic and cross-border M&A transactions, including public and private mergers, acquisitions, divestitures, and takeover defense for corporate clients.
• Legal Services - Litigation & Investigations Comprehensive litigation representation and corporate investigations across federal and state courts, including securities litigation, white-collar defense, and bankruptcy litigation for corporate and individual clients.
• Legal Services - Capital Markets Counsel on equity and debt offerings, SPACs, and other capital markets transactions including IPOs and follow-on offerings for issuers and underwriters.
• Legal Services - Financial Services Advisory on bank regulatory matters, fintech, payments, investment management, and financial services M&A for banks, insurers, investment firms, and fintech companies.
• Legal Services - Restructuring & Special Situations Counsel on in-court and out-of-court restructurings, distressed acquisitions, and special situation investments for corporates, creditors, and sponsors.
• Legal Services - Tax Tax advisory including tax planning, controversy, policy, and French and UK tax practices for corporate and individual clients.
• Legal Services - Artificial Intelligence Practice Regulatory and transactional counsel for AI companies, including guidance on AI governance, compliance, and dealmaking involving AI targets.
• Legal Services - Digital Infrastructure Practice Advisory on data center development, digital infrastructure investments, and AI compute capacity transactions, combining M&A, finance, energy, and project development expertise.

Quantifiable outcome

• Top-ranked M&A adviser in Q1 2026 with $540 billion in global announced deals (35.4% market share)
• +3 more outcomes

Named customers15 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Nader MousavicoreOthers · 1 December 2025Co-Head of Firm's Digital Infrastructure Practice established to expand capabilities in complex technology and AI-driven transactions.

Scale indicators6 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Wachtell, Lipton, Rosen & Katz: Elite New York-based M&A powerhouse and S&C's most direct competitor for top-of-the-market public M&A and takeover defense. Frequently co-counsel or compete head-to-head on the largest U.S. transactions.
• Skadden, Arps, Slate, Meagher & Flom LLP: Major global law firm with a similarly broad M&A, litigation, and finance practice. Competes with S&C on cross-border M&A, capital markets, and large corporate transactions worldwide.
• Davis Polk & Wardwell LLP: Elite Wall Street firm with parallel strengths in M&A, capital markets, and financial services regulatory work. A longstanding S&C competitor for premium corporate and finance mandates.
• Simpson Thacher & Bartlett LLP: Top-tier global firm with leading M&A, private equity, and capital markets practices. Competes with S&C for sponsor-led M&A and large-cap corporate transactions.
• Kirkland & Ellis LLP: Dominant global firm in private equity, M&A, and restructuring. A primary competitor for sponsor-side and large-cap transactional mandates.
• Paul, Weiss, Rifkind, Wharton & Garrison LLP: Elite New York firm with strong M&A, litigation, and white-collar practices. Competes with S&C for large public M&A, contested transactions, and high-stakes investigations.
• Debevoise & Plimpton LLP: Premium New York-based firm with comparable M&A, private equity, and international arbitration capabilities. Frequently competes with S&C for cross-border and sponsor-led mandates.
• Latham & Watkins LLP: Largest global law firm by revenue and the 2025 GlobalData M&A value leader ($740.4B). Direct competitor on multi-jurisdictional M&A, finance, and capital markets work.
• Cravath, Swaine & Moore LLP: Premier New York M&A and capital markets firm with a lock-step, promote-from-within culture closely mirroring S&C's. A direct competitor for the largest U.S. public M&A and securities mandates.
• Cleary Gottlieb Steen & Hamilton LLP: Premier cross-border M&A and capital markets firm with strong European and emerging-markets presence. Competes directly with S&C on sovereign, antitrust, and international transactional work.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/sullcrom
• LinkedInlinkedin.com/company/sullivan-

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sullivan & Cromwell LLP