Arntzen de Besche is one of Norway's leading and most respected law firms, providing high-quality legal advice to Norwegian and international businesses, public authorities, and private organizations. With a history dating back to 1870, the firm has extensive experience across a wide range of practice areas, including M&A, dispute resolution, banking & finance, real estate, employment law, TMT, and renewable energy. They are known for their deep industry knowledge, commercial understanding, and client-centric approach, consistently ranking among the top firms in Norway by international rating agencies.
Serves as the main operational hub for the firm, housing a significant portion of its legal experts, administrative staff, and client meeting facilities. It's the center for strategic decision-making and coordination of services across all practice areas.
Located in a prestigious and accessible part of Oslo (Frogner/Skillebekk), the office building is modern and designed to facilitate collaboration and provide a professional environment for clients and employees. It likely features advanced technological infrastructure to support complex legal work.
The work culture at Arntzen de Besche is characterized by professionalism, high ethical standards, intellectual rigor, and a collaborative spirit. There's a strong emphasis on continuous learning, development, and delivering excellence in client service.
The Oslo headquarters is pivotal as it's situated in Norway's capital and primary business center, allowing close proximity to major clients, governmental bodies, and courts. This strategic location underpins its role as a leading national law firm.
Arntzen de Besche primarily operates within Norway but serves a significant number of international clients with business interests in Norway, and Norwegian clients with international operations. They achieve global reach through well-established relationships with leading independent law firms across various jurisdictions worldwide, ensuring clients receive seamless, high-quality international legal advice. They are also actively involved in matters concerning EU/EEA law, which has a direct impact on Norwegian businesses.
Bygdøy allé 2
Oslo
Norway
Address: Beddingen 16, 7042 Trondheim
To provide accessible, high-quality legal services to businesses and public entities in the Trøndelag region and strengthen the firm's national presence.
Address: Kongsgårdbakken 3, 4005 Stavanger
To offer dedicated legal support to the significant energy and offshore industries in the Stavanger region and support clients across various sectors in this part of Norway.
Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.
As of April 2025, Arntzen de Besche' leadership includes:
Arntzen de Besche has been backed by several prominent investors over the years, including:
As a private partnership, changes at the highest executive levels (Managing Partner, Board Chair) are typically well-planned and not frequent. No major, publicly announced changes in the top executive team (Managing Partner or Chair) have been identified in the last 12 months. The firm generally focuses on partner promotions and lateral hires to strengthen practice areas.
Discover the tools Arntzen de Besche uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.
Arntzen de Besche typically uses an email format consisting of the employee's initials followed by @adeb.no. This is a common format for Norwegian law firms.
[initials]@adeb.no (e.g., jsd@adeb.no for John S. Doe)
Format
hsa@adeb.no
Example
90%
Success rate
adeb.no • March 15, 2024
Arntzen de Besche has once again achieved strong rankings in the prestigious Chambers Europe guide. Several of the firm's practice areas and individual lawyers are highly recognized, confirming their leading position in the Norwegian legal market....more
adeb.no • February 20, 2024
A team from Arntzen de Besche, led by Per A. Dagslet and Kjetil Risa, advised Verdane on its significant investment in Frends Technology, a leading Nordic integration platform as a service (iPaaS) provider. This transaction highlights the firm's expertise in M&A and technology sectors....more
adeb.no • January 9, 2024
Arntzen de Besche announced the promotion of Cecilie Beck Kåsi (Dispute Resolution), Thomas Øslebø (M&A), and Eivind J. Vesterkjær (Offshore & Industry) to partnership, effective January 1, 2024, strengthening key practice areas of the firm....more
See where a company’s workforce is located, by country or region.
View past and recent funding rounds with amounts and investors.
Understand company revenue estimates and financial scale.
Track active roles and hiring trends to spot growth signals.
Discover what a company offers—products, platforms, and solutions.
Get the company’s official SIC and NAICS classifications.
Analyze visitor volume, engagement, and top traffic sources.
Explore LinkedIn, Twitter, and other active social profiles.
Identify top competitors based on similar business traits.
Explore companies in depth — from the tech they use to recent funding, hiring trends, and buyer signals — all in one powerful view.
Highperformr AI helps you surface the right accounts and enrich your CRM with verified company and contact insights, so your teams can prioritize and engage faster.
Thousands of companies, including Arntzen de Besche, are just a search away.