What Does Thommessen Do?

Total employees450
HeadquartersOslo
Founded1856

Thommessen is one of Norway's foremost commercial law firms, with offices in Oslo, Bergen, Stavanger, and London. They offer a full range of legal services to Norwegian and international businesses, public sector entities, and other organizations. Their expertise spans across various sectors including M&A, banking & finance, dispute resolution, EU/EEA and competition law, intellectual property, real estate, tax, and technology. Thommessen is known for its deep industry knowledge, client-centric approach, and commitment to providing high-quality, strategic legal advice.

Where Is Thommessen's Headquarters?

Thommessen officeThommessen officeThommessen officeThommessen office
*Images sourced via web search. Rights belong to original owners

HQ Function

Serves as the central hub for the firm's operations, client services, strategic management, and coordination of activities across all its offices and practice areas.

Notable Features:

The Oslo office is situated in VIA, a landmark BREEAM Excellent certified modern office building in the Vika district, known for its contemporary architecture, sustainable design, and high-quality facilities fostering collaboration and innovation.

Work Culture:

The work culture at Thommessen's HQ emphasizes professionalism, high ethical standards, collaboration, continuous learning, and a strong client focus. It is a dynamic and high-performance environment where lawyers and staff are encouraged to develop their expertise and contribute to the firm's success.

HQ Significance:

The Oslo headquarters is significant as it anchors Thommessen's presence in Norway's capital, a major center for national and international business, finance, and legal affairs. This prime location allows the firm to be in close proximity to key clients, regulatory bodies, and industry events.

Values Reflected in HQ: The modern, efficient, sustainable, and collaborative design of the HQ reflects Thommessen's core values of quality, integrity, team performance, and commitment to clients and society.

Location:

While primarily focused on the Norwegian market with its core offices in Oslo, Bergen, and Stavanger, Thommessen maintains a significant international presence and capability through its London office. This office is crucial for supporting clients with cross-border transactions, international disputes, and accessing global capital markets. Furthermore, Thommessen actively collaborates with a network of leading independent law firms worldwide to provide seamless global legal services, ensuring comprehensive support for its clients' international business activities and legal needs.

Street Address:

Haakon VIIs gate 10

City:

Oslo

State/Province:

Oslo

Country:

Norway

Where Else Does Thommessen Operate Around the World?

Bergen, Vestland, Norway

Address: Bradbenken 1, 5003 Bergen

To cater to the specific legal needs of the strong maritime, energy, and seafood sectors prevalent in Western Norway, offering local expertise with national and international reach.

Stavanger, Rogaland, Norway

Address: Ankerbygget, Skagenkaien 1, 4006 Stavanger

To support the vital energy sector (both traditional and renewable) and growing technology ecosystem in the Stavanger area, providing on-the-ground legal support and industry-specific knowledge.

London, United Kingdom

Address: 40 Basinghall Street, London EC2V 5DE, United Kingdom

To act as a bridge between the Norwegian and international markets, particularly in finance, shipping, and cross-border transactions, leveraging London's status as a global financial and legal hub.

Buying Intent Signals for Thommessen

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Thommessen? Meet the Executive Team

As of April 2025, Thommessen' leadership includes:

Sverre Tyrhaug - Managing Partner
Trond Hatland - Chair of the Board
Christian Hals - Chief Operating Officer (COO)

Who's Investing in Thommessen?

Thommessen has been backed by several prominent investors over the years, including:

Not Applicable - Thommessen is structured as a partnership.

What Leadership Changes Has Thommessen Seen Recently?

Hire7
Exits0

In the past 12 months, Thommessen significantly expanded its partnership by promoting seven lawyers to partner, effective January 2024. These appointments span various key practice areas, underscoring the firm's commitment to growth and recognizing internal talent. No major departures or hires at the highest executive levels (e.g., Managing Partner, Board Chair) have been publicly announced during this period.

New Appointments:

Bendik Christoffersen, Elevated to Partner, strengthening the firm's M&A and Capital Markets practice.
Eivind J. Vesterkjær, Elevated to Partner, enhancing the firm's Dispute Resolution capabilities.
Ellen Teresa Heyerdahl, Elevated to Partner, bolstering expertise in EU/EEA and Competition Law.

What Technology (Tech Stack) Is Used byThommessen?

Discover the tools Thommessen uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Thommessen Email Formats and Examples

Thommessen primarily uses a three-letter initial code for employee email addresses (e.g., `abc@thommessen.no`). This format is consistently seen for partners and other staff on their official website. While less common for direct contact, the `firstname.lastname@thommessen.no` format might also exist or be routed internally.

`[initials]@thommessen.no` (typically 3 letters, e.g., `fml@thommessen.no`) and potentially `[first].[last]@thommessen.no`

Format

sty@thommessen.no (for Sverre Tyrhaug) or sverre.tyrhaug@thommessen.no

Example

90%

Success rate

What's the Latest News About Thommessen?

Thommessen News • May 15, 2024

Thommessen assists Schibsted in sale of Oikotie Työpaikat and Oikotie Asunnot to Tietoevry

Thommessen provided legal counsel to Schibsted Nordic Marketplaces in connection with the divestment of its online job board Oikotie Työpaikat and real estate portal Oikotie Asunnot in Finland to Tietoevry Tech Services Oy. This transaction highlights Thommessen's M&A capabilities in the technology and media sectors....more

Thommessen News • May 2, 2024

Thommessen assisted Nordic Solar with EUR 200 million capital raise

Thommessen advised Nordic Solar, a Danish solar energy company, in securing a EUR 200 million capital raise from EIG. This funding will support Nordic Solar's expansion of its solar power project portfolio, underscoring Thommessen's expertise in renewable energy and project finance....more

Thommessen News • March 28, 2024

Another strong year for Thommessen in Legal 500

Thommessen received top-tier rankings across 14 practice areas in the Legal 500 EMEA 2024 edition. Additionally, 76 of the firm's lawyers were individually recognized, affirming Thommessen's leading position and excellence in the Norwegian legal market....more

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