Advokatfirmaet Thommessen AS

Firm Profile

Rankings

Europe

Awarded leading firm in Europe 2025

Chambers and Partners

Ranked Departments:

Chambers and Partners

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Overview

Provided by Advokatfirmaet Thommessen AS

Chairman: Baard Bale

Managing Partner: Sverre Tyrhaug

Number of partners: 72

Number of other lawyers: Approx. 245

Languages: Norwegian, English, Swedish, Danish, German, French, Dutch

Firm Overview:

Established in 1856, Thommessen is considered to be one of Norway’s leading commercial law firms. The firm has offices in Oslo, Bergen, Stavanger and London. The firm provides advice to Norwegian and international companies as well as organisations in the public and private sectors, ranging from SMEs to large multi-national corporations. Thommessen covers all business related fields of law.

Main Areas of Practice:

Thommessen assists businesses with transactions, complex projects and contentious matters in all areas of commercial law. Their robust professional legal expertise is combined with in-depth industry knowledge, and their lawyers stay abreast of trends and developments on an ongoing basis in order to provide advice which facilitates long-term value creation.

Asset Management

Contact: Marius Holm Rynning

Tel: +47 414 55 657

Email: [email protected]

Banking & Financing:

Contact: Ellen Teresa Heyerdahl

Tel: +47 996 47 416

Email: [email protected]

Compliance & Investigations:

Contact: Hedvig Moe

Tel: +47 404 91 135

Email: [email protected]

Construction:

Contact: Jacob F Bull

Tel: +47 480 52 421

Email: [email protected]

Data Protection & Cyber Security:

Contact: Christopher Sparre-Enger Clausen

Tel: +47 930 53 854

Email: [email protected]

Debt Capital Markets:

Contact: Einar Grette

Tel: +47 911 55 284

Email: [email protected]

Dispute Resolution:

Contact: Kristine Hyldmo Bjørnvik

Tel: +47 994 67 423

Email: [email protected]

Employment:

Contact: Stein Kimsås-Otterbech

Tel: +47 414 20 515

Email: [email protected]

Equity Capital Markets:

Contact: Solveig F Bugge

Tel: +47 480 12 199

Email: [email protected]

EU/EEA & Competition Law:

Contact: Siri Teigum

Tel: +47 909 12 355

Email: [email protected]

Finance Regulation:

Contact: Tore Mydske

Tel: +47 916 20 911

Email: [email protected]

FinTech:

Contact: Christopher Sparre-Enger Clausen

Tel: +47 930 53 854

Email: [email protected]

Fishery & Aquaculture:

Contact: Mons Alfred Paulsen

Tel: +47 480 12 142

Email: [email protected]

Insolvency & Restructuring:

Contact: Kristoffer Hegdahl

Tel: +47 920 57 178

Email: [email protected]

Insurance:

Contact: Andreas Meidell

Tel: +47 917 88 344

Email: [email protected]

Intellectual Property & Marketing Law:

Contact: Camilla Vislie

Tel: +47 992 69 142

Email: [email protected]

Life Sciences & Health Care:

Contact: Magnus Hauge Greaker

Tel: +47 958 17 168

Email: [email protected]

M&A:

Contact: Christian Grüner Sagstad

Tel: +47 930 95 240

Email: [email protected]

Oil & Gas:

Contact: Christian Hals

Tel: +47 476 21 405

Email: [email protected]

Oil Service:

Contact: Pål Lieungh

Tel: +47 992 65 577

Email: [email protected]

Private Equity:

Contact: Christian Grüner Sagstad

Tel: +47 930 95 240

Email: [email protected]

PropTech:

Contact: Christopher Sparre-Enger Clausen

Tel: +47 930 53 854

Email: [email protected]

Public Procurement:

Contact: Wenche Sædal

Tel: +47 454 53 865

Email: [email protected]

Real Estate:

Contact: Christopher Borch

Tel: +47 922 57 987

Email: [email protected]

Renewable Energy & Infrastructure:

Contact: Bendik Christoffersen

Tel: +47 957 72 936

Email: [email protected]

Retail:

Contact: Eivind J Vesterkjær

Tel: +47 909 66 843

Email: [email protected]

Shipping:

Contact: Mads Haavardsholm

Tel: +47 980 09 765

Email: [email protected]

Sustainability & Climate Risk:

Contact: Tore Mydske

Tel: +47 916 20 911

Email: [email protected]

Tax & Duties:

Contact: Finn Backer-Grøndahl

Tel: +47 934 19 804

Email: [email protected]

Technology & Digitalisation:

Contact: Espen A Werring

Tel: +47 997 97 676

Email: [email protected]

Venture Capital:

Contact: Christian Grüner Sagstad

Tel: +47 930 95 240

Email: [email protected]

International Work:

Thommessen represent non-Norwegian businesses in Norway, as well as Norwegian businesses internationally. Thommessen has a London office, supplemented by an extensive international network. Thommessen’s team members have comprehensive international experience, and their lawyers have argued numerous cases before international courts and tribunals. Thommessen is also the Norwegian member of Lex Mundi.

Innovation:

Top-of-class project management is a hallmark of the Thommessen approach, and both the firm and their clients experience considerable time savings and improved communication flows in projects where Thommessen’s digital project management solutions are used. Thommessen use a leading tool for interaction and collaboration on their projects and have developed proprietary project management tools. With their own internal digitalisation department at the firm, Thommessen have a short route from idea to product. Teamwork and new forms of collaboration have helped Thommessen establish an innovation culture which they believe has put them on the path towards creating the law firm of the future.

Ranked Offices

Provided by Advokatfirmaet Thommessen AS

Address (A-Z)

Norway - Head office

Oslo

Ruseløkkveien 38 , Oslo, Oslo, Norway, 0251, Oslo

www.thommessen.no

+47 2311 1111

Norway

Hordaland

Vestre Strømkaien 7 , Bergen, Hordaland, Norway, 5008, Bergen


Rogaland

Knud Holms gate 8 , Stavanger, Rogaland, Norway, NO-4005, Stavanger

Chambers Laurel

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Contributions

Latest contributions provided by Advokatfirmaet Thommessen AS

Global Practice Guide
Camilla Vislie
Magnus Hauge Greaker
Martin Guldbrandt Hansen
Andreas Stabell
Authored by
Camilla Vislie, Magnus Hauge Greaker, Martin Guldbrandt Hansen, Andreas Stabell
Article • Jan 2026
Global Practice Guide
Camilla Vislie
Magnus Hauge Greaker
Martin Guldbrandt Hansen
Andreas Stabell
Authored by
Camilla Vislie, Magnus Hauge Greaker, Martin Guldbrandt Hansen, Andreas Stabell
Article • Jan 2026
Global Practice Guide
Axel Johnsen Holm
Bjørn Christian Lilletvedt Tovsen
Caroline Svelland Hauge
Authored by
Axel Johnsen Holm, Bjørn Christian Lilletvedt Tovsen, Caroline Svelland Hauge
Article • Dec 2025

All contributions provided by Advokatfirmaet Thommessen AS

Sort by - Most recent
Title and authorsContent typePublication dateMedia type
International Trade 2026 | Norway | Law and Practice
Authored by: Axel Johnsen Holm, Bjørn Christian Lilletvedt Tovsen, Caroline Svelland Hauge, Hedvig Moe
Global Practice Guide Dec 2025 Article
International Arbitration 2025 | Norway | Trends and Developments
Authored by: Henrik Møinichen, Kristine Hyldmo Bjørnvik, Andreas Meidell, Nanette Arvesen
Global Practice Guide Jul 2025 Article
International Arbitration 2025 | Norway | Law and Practice
Authored by: Trond Hatland, Henrik Fabian Torgrimsby, Anders Eide Røyneberg, Per Ole Svor
Global Practice Guide Jul 2025 Article
Construction Law 2025 | Norway | Law and Practice
Authored by: Pernille Bergan Yang, Jacob F Bull, Henrik Møinichen
Global Practice Guide May 2025 Article
Venture Capital 2025 | Norway | Trends and Developments
Authored by: Øyvind Mork Karlsen, Jørn Hove, Nicolai Julsvoll
Global Practice Guide Apr 2025 Article
Venture Capital 2025 | Norway | Law and Practice
Authored by: Ylva B Gjesdahl Petersen, Johan Fredrik Brende, Marius Holm Rynning
Global Practice Guide Apr 2025 Article

Advokatfirmaet Thommessen AS