Arntzen de Besche

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.

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.

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12 April 2023

Maintains strong track record on Legal 500

Reputable rating agency Legal 500 has published its results for the 2023 edition. We consolidate our position as one of Norway's leading law firms and are ranked in 18 out of 20 areas of expertise.

14 April 2023

Frøy Kapital aqcuires 66 percent of OceanTech Innovation

Frøy Kapital becomes a long-term owner of the Trondheim-based technology company OceanTech Innovation, with the aim of further growth both internationally and in new markets. We are proud to have assisted Frøy Kapital as legal advisors in this transaction.

30 March 2023

Arntzen de Besche has assisted BEWI Invest with a NOK 2.2 billion transaction in SinkabergHansen

We are delighted to have assisted BEWI Invest as legal advisers in this transaction. BEWI Invest has come to an agreement with shareholders at SinkabergHansen (SBH) representing 44,4 per cent ownership. The purchase price is agreed to be NOK 2.2 billion, implying an enterprise value of SBH on 100 per cent basis of NOK 5.0 billion.

23 March 2023

Arntzen de Besche has assisted Aqualoop with raising capital

New investors have invested in Aqualoop - with Markó Partners as the largest. They will also take a board position in the company. Together they invest in Icelandic Offshore Salmon, which will become the first Icelandic sea breeder.

15 March 2023

Arntzen de Besche enjoys strong results on Chambers Europe 2023

We are proud to be top ranked in Norway on the recently published ranking of Chambers Europe. 23 of our lawyers are ranked as "Leaders in their field". Chambers is one of the most recognized rating agencies globally and ranks law firms and lawyers based on interviews with law firms' clients and partners, and also conducts its own research.

6 March 2023

We have assisted EG A/S in the acquisition of PatientSky’s SaaS and App business

We are delighted to have assisted EG in its acquisition of PatientSky SaaS Norway AS and PatientSky App AS. The transaction values the business at between NOK 850 million and NOK 900 million.

17 February 2023

We maintain strong results in Chambers Global 2023

Yesterday, Chambers Global published its 2023 results, strengthening our individual performance and maintaining our positions at company level. The ranking covers a total of eight areas and we are ranked within seven.

16 February 2023

Arntzen de Besche has assisted bp on joint venture with Deep Wind Offshore to develop South Korean offshore wind projects

We are proud to have acted as legal advisors to bp with this joint venture, seeking to further develop the offshore wind opportunities in South Korea. As a part of the agreement, bp has acquired a 55 percent stake in Deep Wind Offshore’s (DWO) early-stage offshore wind portofolio, which includes four projects across the Korean peninsula with a potential generating capacity of up to 6GW.

1 February 2023

Arntzen de Besche has assisted Ernströmgruppen with the purchase of Varmeteknikk AS

We are proud to have assisted Ernströmgruppen as legal adviser with the agreement to secure all shares in Varmeteknikk, Norway’s largest supplier of electrical boilers. The company is engaged in significant export activities and is represented in many European countries.

5 December 2022

Arntzen de Besche assists Armaturjonsson with the purchase of TermoRens AS

Armaturjonsson has 50 years of experience in Norwegian construction industry and offers systems that make it as easy as possible to avoid the blooming of unwanted bacteria in the drinking water, as well as to ensure the longest possible lifetime and power operation on all installations of water-based heating and cooling in all types of buildings.

17 November 2022

Arntzen de Besche have assisted Pandion Energy AS in the merger with Pandion Energy Norge AS (previously ONE-Dyas Norge AS)

We are proud to have acted as legal advisers to Pandion Energy AS in this merger. The merger was approved by the Ministry of Petroleum and Energy on 14 October 2022, and was completed 1 November 2022.

28 September 2022

Introduction of source rent taxation for the aquaculture industry

The Norwegian government today introduced a proposal to subject aquaculture to a new source rent taxation regime. Until now, the industry has only formed part of the ordinary corporate income tax regime (in addition to a certain minor special duties).

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Unique individuals -

leading together