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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: 137
  • Languages: English, French, German and the Scandinavian languages
  • International Offices The firm also has an office in Singapore 

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 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:
5 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.
Key Clients: DNB Bank ASA, ABN Amro Bank N.V., Glitnir Banki hf., SAS Scandinavian Airlines System, GE Capital Solutions AB/AS, several major London law firms
Contact: Paul Sveinsson
Tel: +47 23 89 45 84 
Email: psv@adeb.no

Commercial Property & Construction:
13 partners and a total of 33 fee earners
Arntzen de Besche has an extensive practice within commercial property and is involved in most of the largest transactions in this area.
Key Clients: Fearnley Finans Eiendom AS, Ness, Risan and Partners AS, Veidekke ASA, Avantor AS, Helsebygg Midt-Norge, Aberdeen Asset Management Norway AS, Skanska Norge AS, RS Platou Real Estate AS
Contact: Hans Henrik Kværne
Tel: +47 23 89 45 48
Email: hhk@adeb.no

Corporate & M&A:
14 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.
Key Clients: Teekay Corporation, Warburg Pincus, G4S, Veolia Transport SA, PWC Deals, RWE AG, Tullow Oil
Contact: Geir Evenshaug
Tel: +47 23 89 45 44
Email: gev@adeb.no

7 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.
Key Clients: SAS Group, Statoil ASA, Petroleum Geo-Services ASA, Petoro, STX OSV ASA
Contact: Sven Iver Steen
Tel: +47 23 89 45 93
Email: sis@adeb.no

EU/EEA & Competition:
5 partners and a total of 12 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.
Key Clients: Petroleum Geo-Services, Praxair, Canon Europe, Leonard Weiss, Schneider Electric, Toyota Material Handling
Contact: Stein Ove Solberg
Tel: +47 23 89 46 50
Email: sos@adeb.no

Financial Services:
3 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. Key Clients: Gjensidigestiftelsen, NRP Finans AS
Contact: Trond Vernegg
Tel: + 47 98 29 45 98
Email: vernegg@adeb.no

Litigation & Arbitration:
15 partners and a total of 28 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 the firm’s lawyers act as arbitrators on a regular basis.
Key Clients: Ernst & Young, KPMG AS, PriceWaterhouseCoopers, Transocean, Clyde & Co, SBM Offshore, Norwegian Ministry of Petroleum and Energy
Contact: Thomas Nordby
Tel: +47 23 89 46 01
Email: ten@adeb.no

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.
Key Clients: Petroleum Geo-Services ASA, Lundin Norway AS, RWE Dea Norge AS, Ministry of Foreign Affairs/NORAD, Core Energy AS, Petoro AS, Gassco AS, Petroleum Safety Authority, Ministry of Petroleum and Energy, Petroleum Directorate
Erlend Bakken
Tel: +47 23 89 45 38
Email: eba@adeb.no

Renewable Energy & Climate:
4 partners and a total of 10 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.
Key Clients: TrønderEnergi AS, Enova SF, Gassnova SF, CO2 Technology Centre Mongstad DA, Norwegian Bio Energy Association
Contact: Dag Erlend Henriksen
Tel: +47 23 89 45 33
Email: deh@adeb.no

Technology & Innovation:
3 partners and a total of 5 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.
Key Clients: SINTEF, Gassnova SF, Petroleum Geo- Services ASA, Sensor Developments AS, Multi Phase Meters AS, FMC Kongsberg Holding AS
Contact: Espen Sandvik
Tel: +47 23 89 45 51
Email: esa@adeb.no

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. Key
Transocean, Olav Thon Gruppen AS, Petroleum Geo-Services ASA, GDF Suez E&P Norge AS, Lundin Norway AS, Gate Gourmet GmbH, Teekay Petrojarl AS, Core Energy AS
Contact: Anders Heieren
Tel: +47 23 89 45 22
Email: ahe@adeb.no


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