Arntzen de Besche

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Arntzen de Besche‘s corporate and M&A practice is ’creative, structured, responsive and flexible’, with particular knowledge in the renewables, oil and gas and, increasingly, technology sectors. Practice head Knut Martinsen is an M&A specialist with a ‘strong commercial mindset’ who focuses on software transactions. Per A Dagslet is also an M&A specialist whose ‘capacity, experience and dedication is exceptional’, and Lars Horgen Hinze acts for a wide range of clients on cross-border and domestic buy-outs and exits. The group also includes Per Kristian Ramsland and Steffen Rogstad who both advise on a wide range of issues relating to M&A and general company law. Another key contact is Maria B. Tanemsmo, who assists clients in various business sectors. Thomas Borch-Nielsen and Øyvind Greaker Bjørndal joined the team from Advokatfirmaet Grette AS in early 2024.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Highly dedicated, pragmatic and understanding the business in which the client operates.’

  • ‘Great company with skilled resources in many fields.’

  • ‘The firm is one of the leading law firms in Norway, yet they treat their clients on an individual and personal level. The team made me as a client feel special and taken care of. They are competent and serve our needs efficiently and professionally.'

  • ‘Creative, structured, responsive, flexible.’

  • ‘Knut Martinsen is always focused, quick and pragmatic with great skills to solve issues very quickly.’

  • ‘Knut Martinsen is a great individual offering good advice while also having a strong commercial mindset.’

  • ‘Per Dagslet is our most important resource. His capacity, experience and dedication is exceptional.’
  • ‘Per Dagslet has shown great ability to make the best of the task at hand.’

Key clients

  • Orkla
  • Edison S.p.A
  • Torghatten
  • Shearwater Geoservices
  • TrønderEnergi
  • Castik Capital
  • AnaCap Financial Partners
  • Aurelius
  • Francisco Partners
  • Trollfjord AS / Andøy Holding AS
  • Ness, Risan & Partners
  • Sweco
  • Mitsui
  • A.P. Moller – Maersk
  • Nutreco B.V.
  • Investcorp
  • EG
  • E.On SE
  • STIFTELSEN SINTEF and subsidiaries
  • Frøy Kapital AS
  • Toyota Material Handling Norway AS
  • Ernströmgruppen AB

Work highlights

  • Assisting the Japanese trading house Mitsui with its agreement to invest in a 27.5% stake in Aker Mainstream Renewable AS.
  • Advising Orkla ASA on a reorganisation of the group to establish an industrial investment company consisting of 12 individual portfolio companies with its own dedicated organisation.
  • Advising Trollfjord and Andøy Energi Holding in its transaction agreements with Nordkraft.

Lawyers

Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Maria B. Tanemsmo
Partner. Tanemsmo offers her M&A expertise to both Norwegian and international clients across various industries, with a particular focus on technology, renewable energy, and aquaculture. Additionally, her proficiency extends to managing equity transactions, private equity – and venture processes. 

Practice head

The lawyer(s) leading their teams.

Knut Martinsen

Other key lawyers

Per A Dagslet, Lars Horgen Hinze, Per Kristian Ramsland, Steffen Rogstad, Maria B. Tanemsmo, Thomas Borch-Nielsen, Øyvind Greaker Bjørndal