Arntzen de Besche

What Arntzen de Besche does

Arntzen de Besche, currently doing business as Arntzen Grette, is a Norwegian full-service corporate law firm founded in 2001 and operating as an independent private partnership. The firm employs 245 people, of whom 185 are lawyers and legal professionals (jurister), across four offices in Norway: Oslo (headquarters), Trondheim, Stavanger, and Mo i Rana. It serves large Norwegian enterprises across financial services, energy and oil & gas, real estate, healthcare, and infrastructure, with practice areas spanning dispute resolution (including Supreme Court litigation), M&A and corporate transactions, real estate law, capital markets, labor and employment law, healthcare law, crowdfunding regulation, and ESG/sustainability advisory. The firm also maintains a German Desk capability for German-speaking cross-border clients.

The firm generates revenue through professional legal advisory services billed to corporate clients via hourly rates and fixed fees on specific engagements. Go-to-market is partner-led enterprise field sales, with no significant external marketing channels beyond professional reputation, the firm website, newsletters, and events. Named mandates include the Nye Aker Sykehus hospital project (NOK ~30 billion investment), the Pandion Energy–Vår Energi transaction, the Swiss Life big box real estate sale, and a precedent-setting Supreme Court case for Entercard on BankID misuse liability.

The firm is privately held by its partners with no parent company, private equity backing, or institutional investor ownership. Recent strategic activity centers on lateral partner additions in dispute resolution (Behncke, Sanengen), positioning around new Norwegian regulatory regimes (Crowdfunding Act, EU Listing Act transposition, healthcare data legislation), and deepening institutional standing in labor law via a partner appointment to the Labor Court.

Name

Arntzen de Besche

Legal name

Advokatfirmaet Arntzen Grette

Website

https://adeb.no

Company type

Private

Founded year

2001

Operating status

Operating

Headcount range

101–250 employees

Short description

Arntzen Grette (formerly Arntzen de Besche) is a Norwegian full-service corporate law firm with 245 employees, including 185 lawyers, serving large enterprise clients across finance, energy, real estate, and healthcare from four offices in Norway.

Ownership category

akta.pro rank

Product category

Legal Services

NAICS

Offices of Lawyers (541110), Legal Services (5411), Management Consulting Services (54161)

SIC

Services-Legal Services (8111), Services-Management Consulting Services (8742)

akta.pro primary industry

Enterprise Risk Management (ERM) Advisory (BPAHAFAA)

akta.pro secondary industry

Bankruptcy, Restructuring & Insolvency Law (BPAHAAAH)

Keywords

• Legal advisory services
• Commercial dispute resolution
• Mergers and acquisitions
• Capital markets law
• Corporate legal services

Headquarters

HQ city

Oslo

HQ country

Norway

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales

Revenue model

1. Legal Advisory Services: The firm generates revenue through professional legal services billed to corporate clients. Services include M&A advisory, dispute resolution, regulatory compliance, real estate transactions, and employment law. Revenue is derived from ongoing client relationships and specific transaction engagements.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Arntzen de Besche is a Norwegian law firm delivering legal advisory and representation services to corporate and institutional clients. The firm operates across multiple practice areas, including dispute resolution, transactions and M&A, real estate law, capital markets, labor law, healthcare law, crowdfunding/financing regulation, and sustainability/ESG advisory, from four offices in Norway (Oslo, Trondheim, Stavanger, Mo i Rana) with 245 employees including 185 lawyers and jurists.

Product overview

Arntzen Grette is a full-service Norwegian law firm offering a unified portfolio of legal advisory services. The firm provides specialist legal counsel across multiple practice areas including dispute resolution (tvisteløsning), transactions and M&A, real estate law, capital markets, labor law, healthcare law, crowdfunding regulation, and sustainability/ESG. The firm operates as a single integrated legal practice rather than a modular product platform, with 245 employees including 185 lawyers across four offices in Oslo, Trondheim, Stavanger, and Mo i Rana serving corporate clients throughout Norway.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Successfully represented Entercard in landmark Supreme Court ruling on BankID misuse liability
• +1 more outcomes

Named customers7 records

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Bird & Bird: International law firm with a Nordic presence competing for cross-border tech, finance and regulatory mandates involving Norwegian clients; an international incumbent rather than a domestic peer.

Direct peers

• Advokatfirmaet Wiersholm: One of Norway's leading full-service commercial law firms with comparable headcount and a similar enterprise-client focus on M&A, capital markets, dispute resolution and regulatory matters; a direct competitor for Norwegian corporate mandates.
• Advokatfirmaet Thommessen: Largest Norwegian full-service law firm, competing head-to-head for the same blue-chip Norwegian corporates across transactions, dispute resolution and regulatory advisory.
• Advokatfirmaet Selmer: Norwegian full-service law firm covering M&A, dispute resolution, employment and regulatory matters for corporate clients; comparable size and client base to Arntzen Grette.
• Advokatfirmaet BAHR: Norwegian full-service commercial firm with strong M&A, banking/finance and dispute resolution practices serving large Norwegian enterprises; highly comparable in scope and target clients.
• Wikborg Rein: Major Norwegian law firm with internationally recognized shipping, energy and dispute resolution practices; competes directly for Norwegian and offshore-related corporate mandates.
• Advokatfirmaet Hjort: Norwegian full-service law firm with strong public-law and corporate practices, serving Norwegian enterprises and public-sector clients; comparable scope and target market.
• Advokatfirmaet Ræder: Mid-sized Norwegian law firm offering corporate, dispute resolution, employment and IP services to enterprise clients — directly comparable in size and practice mix.
• Advokatfirmaet Schjødt: Full-service Norwegian law firm with strong sector practices in energy, real estate and dispute resolution, competing for the same enterprise mandates across Norway.
• Advokatfirmaet Haavind: Mid-sized Norwegian full-service firm of similar headcount, focused on M&A, employment, real estate and dispute work for Norwegian corporates — a direct competitor for enterprise mandates.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/adeb.law
• LinkedInlinkedin.com/company/arntzen-de-besche

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 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 Arntzen de Besche