Mr Karl Rosén > Arntzen de Besche > Oslo, Norway > Lawyer Profile

Arntzen de Besche
PO BOX 2734
0204 OSLO
Karl Rosén photo

Work Department

Financial regulation, Financing, Insurance, Capital markets, Dispute resolution, Directors’ and officers’ liability


Partner. Rosén assists clients in the financial sector on matters relating to business development, framework conditions, licensing processes, organisation, corporate governance, transactions and disputes. Customers include banks, credit institutions, insurance companies, investment companies andalternative investment fund (AIF) managers.

Rosén has in-depth knowledge of financial compliance issues, company law and debt collection law. He is frequently asked to issue legal opinions and perform assessments in these areas. He also has experience as an arbitrator.

Rosén’s approach to cases focuses on understanding the various interests in play, quickly recognising the relevant issues, identifying appropriate solutions and taking an active stance on the strategic choices involved, to ensure the best possible outcome for the client. He has published a number of books and articles, and regularly lectures in relevant forums.


2019, Partner, Arntzen de Besche;
2011-2019, Partner, Grette;
2009-2010, In-house counsel, DNB NOR Bank ASA;
2009, Senior Associate, Hjort;
2006-2009, Senior Associate, BA-HR;
2005-2006, Adviser, Ministry of Finance, Financial Markets Department; 2004-2005, Deputy Judge, Asker and Bærum District Court;
2001-2004, Executive Officer, Ministry of Justice and Police, Legislation Department;
2000-2001, Associate, Wiersholm, Mellbye & Bech


The Scandinavian languages, English


Norwegian Bar Association


2000 – 2001, King’s College London, Post Graduate Diploma in EC  Competition Law;
2000, University of Bergen, Cand.jur.

Lawyer Rankings

Norway > Banking and finance (including shipping finance)

The banking and finance team at Arntzen de Besche is ‘very efficient, knowledgeable and pleasant to work with‘. The client base includes international and Norwegian financial institutions, and the group is regularly instructed on real estate and shipping financing matters; oil and gas mandates also remain prominent in the team’s workload. Department head Trond Kildal is ‘highly skilled and very attentive‘ and has an excellent track record in advising lenders on domestic and cross-border acquisition financing work. Vidar Løhre is a key contact for restructuring and debt capital matters, and Karl Rosén is sought out for his strength in financial regulatory issues. Siril Visnes is well known for advising on bilateral and syndicated financings. Specialist counsel Atle Stensrud is ‘highly knowledgeable‘.

Norway > Insurance

Arntzen de Besche’s insurance practice has established a leading reputation for its full-service offering which includes advising on all insurance types from pension insurance and professional liability issues through to offshore insurance and natural hazard insurance. The firm also provides guidance on insurance disputes and has an impressive track record in handling M&A-related insurance matters. Practice head Sven Iver Steen has primary expertise in pension issues, life and non-life insurance matters, Andreas Nordby excels in contentious work and Karl Rosén focuses on regulatory work. The team has been strengthened by the recent additions of Alexander Plows, who has experience in insurance claims, regulatory issues and policies; and Eivind Landmark Tandrevold, who is active in professional liability claims.