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About Thommessen

The best legal minds – and more

Thommessen is one of Norway’s leading commercial law firms, with offices in Oslo, Bergen, Stavanger and London. Since our foundation in 1856, we have been closely involved in most of the defining developments in Norwegian business. Our clients are Norwegian and international businesses, in both the private and public sector.

In 2022, Norwegian businesses ranked Thommessen as the Norwegian law firm with the strongest legal expertise for the eighth consecutive year (Kantar Prospera). Such a rock-solid reputation can only be built by everyone pulling in the same direction. When assisting businesses on complex transactions, projects and disputes, we create tailormade interdisciplinary teams that work in tandem with the client.

With a long history and a strong reputation, we are looking squarely to the future. At Thommessen, we are curious about new solutions and new ways of doing business. By combining our legal expertise and experience with new technology, we create innovative solutions aimed at making life easier and more productive for our clients. In addition, we use professional project management to meet client needs, thereby offering predictability in terms of costs, outcomes and timelines.

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At Thommessen, we enable our clients to achieve their objectives by understanding their challenges and opportunities. Sverre Tyrhaug
Managing Partner

Management and board

Thommessen's management team consists of Managing Partner Sverre Tyrhaug, Head of HR Anne Therese Bogen, Partner Jacob F. Bull, Head of Marketing and Client Development Mirella Gullaksen, Partner Christian Grüner Sagstad, Partner Tron Dalheim, Chief Digital Officer Trine Melsether, Partner Jan J. Greve, Partner Thomas Abrahamsen and CFO Audun Maximilian Ohnstad.

Thommessen's board is headed by chairman, Partner Hans Cappelen Arnesen, and also consists of Partner Mons Alfred Paulsen, Partner Henning Harborg, Partner Kristine Hyldmo Bjørnvik, Partner Lars Eirik Gåseide Røsås, Managing Associate Pernille Engstrøm Skaug, Senior Associate Cecilie Amundsen Raa and Information Officer Marianne Skibenes.

Thommessen-inngang i VIA

Our values

  • Reliable

    We are reliable, because we have an unwavering commitment to integrity and quality that stands the test of time. We are accessible and deliver on our promises to clients and colleagues. We look after each other and provide a safe and inclusive workplace for all.

  • Curious

    We are curious, because we want to learn from, and understand, our clients and their challenges. We ask relevant questions, and we listen. We are curious about market trends, new technologies, digital transformation, economics, politics, sustainability and society.

  • Team player

    We are team players, because we are motivated by the pursuit of shared objectives and convinced that working as one team is the key to providing businesses with industry-leading legal services. We stand by each other in challenging situations and celebrate as one team when we succeed.