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Arntzen de Besche and Grette to Merge

Together, we are creating a strong, nationwide presence in the Norwegian legal market.

The purpose of the merger is to offer the market a broader and more specialised range of services. Arntzen Grette will become one of Norway’s leading firms within legal advisory, dispute resolution and transactions for business and industry.

We look forward to continuing our close cooperation with our clients – with deeper expertise, more specialists and an even stronger position in the market.


Learn more about the merger

The modern law firm with a proud history

Arntzen de Besche has been a critical player in shaping the laws in Norway since 1870. We are proud of our heritage, yet our ability to demonstrate agile mindedness in our practice allows us to be one of the leading law firms in the country.

With locations around Oslo, Stavanger and Trondheim and a team of 140 specialists across different sectors, we provide our clients with an integrated, proactive approach to their legal and business needs.

Our vision is to be our customer's best advisor
179 unique individuals - leading together
Climate-neutral since 2019
About us

Join us

We are an inclusive law firm with an ethos focussed on teamwork and producing academic quality work.

We aim to assist you to become a skilled business lawyer. We will provide you with a challenging environment to become proficient while facilitating you to grow into your role and thrive professionally and socially.

Read more about career opportunities

Broad professional environment adapted to your industry

With experience in most industries, we provide our clients with superb legal knowledge and wisdom, showing deep business and industry understanding in all areas of business law. That means that you get the most outstanding team to help you across practice areas.

Our clients range from large internationally listed companies, financial institutions, governments and organisations to small businesses. Our expertise allows us to resolve complex disputes, assist on transactions and provide short- and long-term strategic advice by providing an integrated and proactive approach to your needs. We see the possibilities and take you where you want to go.

We see the possibilities and take you where you want to go.

Expertise

News

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26 September 2025

KPMG divests part of its business to Cedra

We are proud to have advised KPMG Norge on the sale of part of its business to the newly established audit firm Cedra Norge (backed by Adelis Equity). The agreement covers ten offices primarily providing audit and advisory services to small and medium-sized clients, with around 220 employees transferring to Cedra.

18 September 2025

The new EU Pay Transparency Directive – is your business ready?

The gender pay gap in the EU remains at around 13–14%, with little progress over the past decade. In Norway, the gap is approximately 12%, and the differences become even more pronounced when looking at overall income and pension accrual. According to the EU, a large reason for this persistence is the lack of pay transparency: without insight into how salaries are determined, employees cannot easily detect or challenge unfair differences.

18 September 2025

Falk becomes part of Nordic fund services group GOT YOUR BACK

We are pleased to have advised Falk (and Flakeblikk Holding) in connection with its sale to GOT YOUR BACK (GYB), a Nordic provider of fund administration, compliance and corporate services. The transaction marks GYB’s entry into the Norwegian market and creates one of the largest independent providers of fund administration and compliance services to alternative investment funds and UCITS managers in the Nordics.

19 February 2025

Adaptive AS joins Visma

Adaptive AS has entered into an agreement to be acquired by Visma, a leading provider of business-critical solutions for the property sector. We are proud to have advised Adaptive as legal counsel in this transaction.

13 February 2025

Orkla sells all shares in Pierre Robert Group

We have assisted Orkla ASA in the sale of 100% of the shares in Pierre Robert Group AS to Jotunfjell. The transaction is expected to be completed during the first quarter of 2025, subject to approval by the Norwegian Competition Authority.

21 October 2024

Castik Capital acquires majority stake in Aider

The European private equity fund Castik Capital has acquired a majority stake in the Norwegian accounting and consulting firm Aider. More than 160 employees will retain a collective 45 per cent ownership stake. We are proud to have assisted Castik Capital as legal advisors in this transaction.

13 September 2024

More Individual Rankings in this Year’s IFLR 1000

We are pleased to report strong results in this year’s edition of the International Financial Law Review (IFLR). Notably, we have increased the number of individually ranked lawyers, with 15 of our colleagues recognised this year – four more than in 2023.

21 February 2024

Sennheiser invests in Norwegian scale-up sensiBel

Today, sensiBel, a Norwegian scale-up, announced a significant milestone with the successful closure of their EUR 7 million funding round. The investment was led by Sennheiser, a global leader in professional audio, along with participation from existing shareholders including TRUMPF Venture, Skagerak Capital, Investinor, SINTEF Venture, MP Pensjon, and Halden Kommunale Pensjonskasse. We are proud to have acted as legal advisers to SensiBel throughout this transaction.

19 January 2024

Landmark decision in Oslo: PDO approvals invalidated by court

Greenpeace and Natur og Ungdom, two Norwegian environmental organisations, won their lawsuit against the Norwegian state on Thursday 18 January 2024. Oslo District Court handed down a decision which invalidated the Ministry of Energy’s approval of the Plans for Development and Operations for three oil and gas fields on the NCS. The projects in question are Breidablikk, Tryving and Yggdrasil.
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Values and engagement

We are committed to the environment and sustainability. We are a proud member of the climate network Skift. Together with a number of other business players, we are working on launching concrete measures to help Norway achieve their sustainability goals by 2030.

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