Allen & Overy

What Allen & Overy does

A&O Shearman, formed in 2024 through the merger of Allen & Overy (founded 1930) and Shearman & Sterling, is an international law firm headquartered in London with nearly 4,000 lawyers and specialists distributed across North America, Europe, Asia Pacific, the Middle East, Africa, and Latin America. The firm operates six core practice areas—Advisory and Regulatory, Capital Markets, Corporate and M&A, Disputes, Finance, and Legal Innovation—and serves market-leading enterprises, financial institutions, and private capital clients with cross-border transactional, regulatory, and dispute resolution mandates. Representative engagements include multi-billion-dollar capital markets transactions (e.g., Stellantis Financial Services US Corp. USD 2.5 billion notes offering and Sasol Limited USD 750 million bond issuance) and complex M&A across Europe and Africa.

The firm's technology stack centers on AI-powered legal tools, anchored by a strategic partnership with Harvey AI for contract review and document analysis, alongside a proprietary Fuse innovation program. These tools have delivered reported 30-80% efficiency gains on first-pass contract assessments and are deployed within a governed AI architecture that combines deterministic rules-based engines with AI capabilities to produce auditable, reliable digital legal services. The firm has also invested in a dedicated legal technology leadership bench, including a Chief Technology Officer and senior engineering and legal technology executives.

Revenue is generated through traditional professional services billing—hourly rates, transaction fees, and retainer arrangements—with customized pricing determined by matter complexity, practice area, seniority of counsel, and geographic location. Go-to-market is exclusively enterprise-focused via direct relationship management and specialized practice area teams across global financial centers, with engagement structures ranging from multi-year contracts to discrete transaction mandates. Pricing is not publicly disclosed.

Name

Allen & Overy

Legal name

Allen & Overy LLP

Website

https://allenovery.com

Company type

Private

Founded year

1730

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

A&O Shearman is a global law firm formed in 2024 via the merger of Allen & Overy and Shearman & Sterling, serving multinational enterprises, financial institutions, and private capital clients across six practice areas with nearly 4,000 lawyers.

Ownership category

akta.pro rank

Product category

International Legal Services

NAICS

Offices of Lawyers (541110)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Mergers & Acquisitions (M&A) & Securities Law (BPAHAAAI)

akta.pro secondary industries

M&A Advisory (Buy-side/Sell-side) (BPAHADAC), Strategic Partnerships, Alliances & JVs Advisory (BPAHADAI)

Keywords

• Cross-border legal services
• Corporate M&A advisory
• Capital markets law
• International dispute resolution
• Legal innovation platforms

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Legal Services: Traditional law firm revenue from providing legal advice and representation across corporate, finance, capital markets, disputes, and advisory practice areas. Services billed through hourly rates, transaction fees, and retainer arrangements for ongoing client relationships.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Allen & Overy, operating as A&O Shearman following the 2024 merger with Shearman & Sterling, is a global law firm that delivers cross-border legal services across six practice areas: Advisory and Regulatory, Capital Markets, Corporate and M&A, Disputes, Finance, and Legal Innovation. The firm serves global enterprises, financial institutions, investment funds, and corporations through nearly 4,000 lawyers across major financial centers worldwide, billing through hourly rates, transaction fees, and retainer arrangements.

Product overview

A&O Shearman (formed in 2024 through the merger of Allen & Overy and Shearman & Sterling) offers a comprehensive suite of legal services organized into six core practice areas: Advisory and Regulatory, Capital Markets, Corporate and M&A, Disputes, Finance, and Legal Innovation. The firm serves industries including energy, life sciences, technology, financial services, and private capital across global offices with nearly 4,000 lawyers and specialists. The Legal Innovation practice area specifically focuses on developing innovative legal products, services and technologies including delivery expertise and the Fuse platform. The firm has implemented AI contract review tools and governed AI workflows for enhanced legal service delivery.

Differentiator

Problem solved

Functional benefit

Products and services

• Advisory and Regulatory Legal services covering administrative and public law, antitrust, artificial intelligence regulation, business and human rights, cybersecurity, data privacy and protection, environmental law, financial services advisory, foreign direct investment, funds and asset management, global employment, sanctions and international trade, and tax for global enterprises and institutions.
• Capital Markets Capital markets legal services including asset finance, corporate trust and agency, debt capital markets, derivatives, emerging growth, emerging markets finance, equity capital markets, insurance, Islamic finance, leveraged finance, sovereign debt, structured finance and CLOs, and sustainable finance.
• Corporate and M&A Corporate and M&A legal services covering complex commercial transactions, digital assets, intellectual property, M&A joint ventures and corporate reorganizations, private equity, project development and finance, and technology transactions.
• Disputes Dispute resolution services including asset tracing and recovery, construction disputes, corporate and commercial litigation, financial services litigation, international arbitration, M&A litigation, political law, and securities litigation and enforcement.
• Finance Finance legal services covering global loans and structured debt solutions, leveraged finance and high yield, and trade commodity and export credit finance.
• Legal Innovation (Fuse) Legal innovation services including delivery expertise, flexible specialist resourcing, and Fuse - the firm's innovation platform for developing legal products, services, and technologies to advance client service delivery.

Quantifiable outcome

• 30-80% efficiency gains on first-pass contract assessments using AI tools

Named customers4 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature3 records

Partnerships

Three partnerships are on record, tiered core.

• Harvey AIcoreTechnology or Integration · 1 January 2024Strategic partnership with Harvey AI, a legal AI startup, for AI-powered legal tools including contract review, document analysis, and workflow automation. Harvey provides AI capabilities while Allen & Overy provides enterprise deployment and institutional expertise.
• Harvey AIcoreTechnology or IntegrationAllen & Overy Shearman cited as a model implementation of governed AI workflows combining deterministic AI architectures with institutional expertise for auditable, reliable digital legal services.
• Local Law Firms (Global Network)coreStrategic or Co-development PartnerThrough extensive office network and relationships with the world's best local law firms, supporting clients wherever they do business across all major jurisdictions.

Scale indicators4 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Freshfields Bruckhaus Deringer: Magic Circle firm with comparable European roots and US expansion, competing in M&A, antitrust, disputes, and finance with similar cross-border capability profile.
• Skadden Arps Slate Meagher & Flom: US elite law firm with strong M&A, capital markets, and litigation practices and a long-standing London presence, competing directly on trans-Atlantic transactions.
• Linklaters: London-based Magic Circle firm with similar practice mix (corporate/M&A, finance, capital markets, disputes) and global office network, competing head-to-head on transnational transactions.
• Latham & Watkins: US-headquartered global law firm with strong M&A, capital markets, and finance practices and a similarly broad international network, directly competing for the same enterprise mandates.
• Kirkland & Ellis: Largest US-headquartered law firm by revenue, dominant in private equity and M&A, with growing European presence — a direct competitor for high-value transactional and restructuring matters.
• Davis Polk & Wardwell: US elite law firm with premier capital markets, M&A, and disputes practices, directly competing for top-tier financial services and corporate advisory mandates.
• Clifford Chance: Magic Circle law firm headquartered in London with comparable global footprint across Europe, US, and Asia Pacific, competing directly on cross-border M&A, capital markets, and finance mandates.
• Slaughter and May: London-headquartered Magic Circle firm with a premier corporate and finance practice and longstanding relationships with major UK and international corporates, competing for similar premium mandates.
• Hogan Lovells: Global law firm formed from a trans-Atlantic merger (Hogan & Hartson with Lovells), offering comparable corporate, finance, regulatory, and disputes practices with global reach — a structural analogue to A&O Shearman.

Emerging players

• Wachtell, Lipton, Rosen & Katz: Elite US law firm specializing in M&A, corporate governance, and restructuring — narrower in scope but dominant in the largest US M&A matters, competing for a subset of premium cross-border mandates.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInuk.linkedin.com/company/aoshearman
• Xx.com/AllenOvery
• Facebookfacebook.com/AllenOveryGrads

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

Investments1 record

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

Frequently asked questions about Allen & Overy