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Arntzen de Besche AS


Arntzen de Besche AS - Oslo
  • P.O. Box 2734 Solli
  • Oslo
  • Oslo
  • Norway
  • NO-0204
  • Chairman: Ingeborg Moen Borgerud
  • Managing Partner: Sven Iver Steen
  • Number of partners: 55
  • Number of lawyers: 136
  • Languages: English, French, German and the Scandinavian languages

Firm Overview:
Arntzen de Besche delivers solution-oriented legal services to Norwegian and international businesses, organisations and public authorities. Arntzen de Besche has years of experience in international transactions on behalf of Norwegian companies abroad and foreign companies in Norway. Through the firm’s collaboration with some of the world’s leading law firms, Arntzen de Besche offers clients a well-organised global network of legal experts.

Main Areas of Practice:  

Banking & Finance:
6 partners and a total of 13 fee-earners
Arntzen de Besche has for a long time served as adviser to both Norwegian and foreign clients, and has been engaged in preparing official reports and in legislative work.
Contact: Paul Sveinsson
Tel: +47 23 89 45 84

Commercial Property & Construction:
12 partners and a total of 32 fee earners
Arntzen de Besche has an extensive practice within commercial property and is involved in most of the largest transactions in this area.
Contact: Hans Henrik Kværne
Tel: +47 23 89 45 48

Corporate & M&A:
13 partners and a total of 31 fee earners
Arntzen de Besche offers advice on all aspects of corporate law. Within the area of M&A and securities law, the firm’s transactions range from small private acquisitions to large domestic and cross-border takeovers, often as advisers to domestic and international investment banks and investors.
Contact: Per A Dagslet
Tel: +47 23 89 45 82

8 partners and a total of 18 fee earners
Arntzen de Besche is a leading employment law firm with experienced and dedicated employment law experts within all fields of employment law, including employment litigation, pensions, privacy protection, collective employment law, maritime and public sector employment law.
Contact: Håvard Sandnes
Tel: +47 23 89 46 59
Email: EU/EEA

EU & Competition:
5 partners and a total of 13 fee earners
Arntzen de Besche has extensive experience within merger control, cartels, abuse of dominant position, state aid, public procurement and the four freedoms. Experience from the Norwegian Competition Authority, the EFTA Surveillance Authority (ESA) and other authorities.
Contact: Espen I Bakken
Tel: +47 23 89 46 04

Financial Services:
4 partners and a total of 6 fee earners
Arntzen de Besche has extensive experience within assistance to the financial services industry with all sorts of financial regulatory matters. Solid experience from the Oslo Stock Exchange, the Financial Supervisory Authority of Norway and the Ministry of Finance.
Contact: Trond Vernegg
Tel: + 47 98 29 45 98

Litigation & Arbitration:
16 partners and a total of 25 fee earners
Arntzen de Besche has special expertise and extensive experience in dispute resolution and counselling professional liability. Long experience from law firms, the Office of the Attorney General, the EFTA Court and the ECJ and as judges of the ordinary courts. Several of the firm’s lawyers act as arbitrators on a regular basis.
Contact: Kåre I. Moljord
Tel: +47 23 89 45 68

Oil, Offshore & Energy:
8 partners and a total of 21 fee earners
Arntzen de Besche’s attorneys have been preferred Counsel for oil companies on the Norwegian Continental Shelf for 40 years, and are today advising international majors and other industrial players, governments and national oil companies on all aspects of the oil and energy sector.
Contact: Dag Erlend Henriksen
Tel: +47 23 89 45 33

Renewable Energy & Climate:
5 partners and a total of 12 fee earners
Arntzen de Besche advices some of the largest Scandinavian power producers regarding their Norwegian operations concerning gas to power, renewables and Kyoto mechanisms. The firm’s experience also includes climate change and pioneering legal work related to carbon capture and storage.
Contact: Dag Erlend Henriksen
Tel: +47 23 89 45 33

Restructuring & Insolvency:
4 partners and a total of 8 fee earners
Arntzen de Besche has extensive experience in handling cases both assisting companies with problems and creditors seeking optimal solutions. The firm has been involved in some of the largest and most complex restructurings in Norway in the last couple of years.
Contact: Joar Grimsbu
Tel: +47 90 05 69 90

Shipping & Offshore:
6 partners and a total of 9 fee earners
Arntzen de Beche assists some of the largest players on the Norwegian Continential Shelf and leading banks in litigations, transactions, project development, financing, taxation and intellectual property matters.
Contact: Karl Erik Navestad
Tel: +47 98 29 45 66

Technology & Innovation:
3 partners and a total of 10 fee earners
Arntzen de Besche provides legal counselling to both national and international clients within the technology, media and telecommunications sectors. Wide-ranging experience assisting in establishing protection strategies in order to maximise the commercial and strategic value of the client’s intellectual property.
Contact: Espen Sandvik
Tel: +47 23 89 45 51

5 partners and a total of 12 fee earners
Arntzen de Besche has a strong tax practice and several of the tax lawyers are considered to be among the leading tax practitioners in Norway covering all aspects of domestic and international tax and VAT, planning and dispute resolution.
Contact: Anders Heieren
Tel: +47 23 89 45 22


  • P.O. Box 2734 Solli,
  • Oslo,
  • Norway
  • NO-0204
  • Tel +47 23 89 40 00
  • Fax +47 23 89 40 01
  • Email :
  • Website :
  • PO Box 660,
  • Stavanger,
  • Rogaland
  • Norway
  • NO-4003
  • Tel +47 51 89 89 00
  • Fax +47 51 89 89 01
  • Email :
  • P.O. Box 8853 Solsiden,
  • Trondheim,
  • Sør-Trøndelag
  • Norway
  • NO-7481
  • Tel +47 73 87 12 00
  • Fax +47 73 87 12 32
  • Email :