Merger and acquisitions

Our team consists of specialised and experienced transaction lawyers who are continuously working with various transactions in relation to the purchase, sale and merger of companies and businesses. With our broad commercial experience and comprehensive industry expertise, we provide valuable strategic advice that ensures a successful outcome.

Advice from our M&A team

Our lawyers will assist you with planning, consulting, due diligence, negotiations and implementation of all types of processes. We provide advice in the following areas:

  • purchase and sale of companies and businesses
  • mergers and demergers
  • joint venture
  • transfer of undertakings
  • restructuring and reorganisation
  • financing and emissions

Expertise to suit your needs

We assist large and small businesses in all industries, including securities firms, investors, and private equity and venture funds. Our client base is local, national and international. We help Norwegian companies setting up business abroad as well as international companies seeking to enter the Norwegian market.

Transactions are often strategic and complex, resulting in major changes. This requires us as lawyers bringing more than our legal expertise to the table. We must have in-depth knowledge of the industry and the market in which the client operates. Our experience and insight into the Norwegian and international markets, across various industries, enable us to provide strategic and structural advice, while also managing the complexity of the individual transactions.

What you can expect from us

We are a team with a broad range of skills and different backgrounds, specialisations and areas of expertise. We also work closely with specialists from other fields and industries in our firm, to ensure that our clients are designated the most optimum team for each assignment. We are curious, involved and keen to read the terrain and be at the forefront.

You will be assigned one main contact person. We designate the lawyer who is best suited to helping you. In summary: With us, you will always have the right expert on the right assignment at the right time.


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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.

15 September 2023

IFLR 1000: Strong results for Arntzen de Besche

The results from this year’s edition of IFLR 1000’s annual survey was recently published. Arntzen de Besche is rated in Tier 2 within all five categories, and 11 of our lawyers are individually recognized. IFLR 1000 is one of the most recognized rating agencies, and have ratings of both law firms and attorneys who has an emphasis on financial and transactional services.

What we have done

ARC Arise Consulting strengthens its position with the acquisition of Oceans

The Nordic consulting group ARC Arise Consulting has acquired the Norwegian company Oceans. Together, they form one of the largest consulting groups in the Nordic region with nearly 1200 consultants specializing in strategy, technology, innovation, design, and communication. Altor Equity Partners is the leading external investor supporting the groups growth journey. We are proud to have assisted ARC, in cooperation with Hammarskiöld, in this transaction.

Cartesian successfully raises capital

We are proud to have assisted Cartesian as legal advisers in this successful funding round. Cartesian, a provider of modular and cost-effective energy storage systems managed to raise NOK 23 million, in addition to NOK 8 million in R&D funds from Norges Forskningsråd and Innovation Norway.

Ergo acquires Storebrand Health Insurance

We are proud to have assisted ERGO, one of Europe's leading financial conglomerates in insures, with this acquisition. The transaction was signed today and is expected to be completed in the first quarter of 2024, with an estimated positive impact of approximately NOK 1.1 billion on Storebrand's Group results.

Strise successfully raised USD 10.8 Million

Exciting times for the Norwegian start-up Strise who successfully raised USD 10.8 million. The majority of investments come from Skype founder Niklas Zennström and his London-based venture capital firm, Atomico.

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.

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.


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