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Accolades
Testimonials
Collated independently by Legal 500 research team.
‘Thommessen has good lawyers across a wide range of areas, which makes them the leading one-stop shop for transactions.'
'Their financing capabilities include both loans and bonds as well as ECM, which is of high importance in the Norwegian market.’
‘The team is professional, easy to reach, commercially aware, and provides practical advice, helping their client to be efficient.’
‘Ellen Teresa Heyerdahl is quick, efficient, understands the client's needs, and acts accordingly. She provides top-quality advice, is hardworking, service-minded, and very easy to work with. She always delivers.
‘The best banking and finance department in Oslo, combining expertise within all relevant areas of financing, regulatory aspects, restructurings and insolvencies.’
‘Hans Haugstad is one of the best and most experienced lawyers in Norway within complex financing and LMA documentation. He is always available, hands-on, and pleasant to work with.’
- ‘Halvor Mansåker is a frontrunner in structures that involve private equity and knows the industry very well.’
‘The banking and financing practice with Thommessen is one of the best in Norway, and I would highly recommend it. The highly skilled lawyers are very good at leading and following-up on financing projects.’
Key clients
- DNB Bank ASA
- Nordea Bank Abp
- Danske Bank A/S
- Svenska Handelsbanken
- Skandinaviska Enskilda Banken AB
- Eksfin
- Pareto Securities AS
- ABG Sundal Collier ASA
- Nordic Corporate Bank ASA
- Euronext Oslo Børs
Work highlights
- Advised HPS Investment Partners LLC in the refinancing of Havila Kystruten AS, financed through a bond issue of €305m.
- Assisted the lenders, DNB Bank ASA, Eksportfinans Norge and various other lenders in a syndicate, on the refinancing of Solstad Offshore.
- Assisted Sparebank1 SR Bank in negotiating a merger with Sparebank1 Sørøst-Norge.
Lawyers
Hall of fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Ellen Teresa Heyerdahl; Tore Mydske
Other key lawyers
Hans Haugstad; Kristoffer Hegdahl; Hedda Leikvang