Merger control matters form the cornerstone of BAHR’s competition and EU practice. Additionally, the team is highly capable in antitrust investigations; a recent highlight in this sphere involves acting for REMA 1000 in an antitrust investigation carried out by the NCA. Arne Torsten Andersen heads up the team, bringing experience from the EFTA Surveillance Authority to competition law investigations. Helge Stemshaug handles merger control and cartel investigations. Beret Sundet has long-standing experience in the pharmaceuticals and biotech sectors. Elin Moen acts on national and EU merger filings. Ylva Kolsrud Lønvik is another key name. Olav Kolstad joined the firm from Advokatfirmaet Schjødt AS in 2026.

Legal 500 Editorial commentary

Accolades

Client satisfaction: Lawyer & team quality

Client satisfaction: Sector knowledge

Testimonials

Collated independently by Legal 500 research team.

‘Helge Stemshaug is exceptional and the best in Norway. He’s knowledge, strategic advice, and relentless approach were instrumental in achieving an amazing outcome on a recent very complex phase 2 merger.’
‘Elin Moen is a highly skilled, pleasant and smart lawyer. She is business-minded and understands what is relevant for the client.’
‘BAHR are outstanding when it comes to helping their clients balance legal risk with commercial interests. They provide practical and efficient advice and demonstrate an impressive business understanding.’
‘Over the past years, I have worked with Beret Sundet and Harald K. Selte - they are both very practical and demonstrate a great understanding of their clients' business and interests. I particularly appreciate being able to get high-quality off-hand advice, typically in the form of a second opinion.'
‘Ylva Kolsrud Lønvik is highly knowledgeable in the field of competition law, provides clear and well‑reasoned advice, and is both efficient and a pleasure to work with.’
‘The team is highly competent.’

Key clients

Spenn Group
REMA 1000 Norge AS
Assa Abloy
Aker Solutions ASA
Posten Bring AS
PGS ASA
Schibsted Media AS
Vend Marketplaces ASA
Norva24 Group AB
REITAN AS
Ahlsell Norge AS
The City of Oslo

Work highlights

Defending Norwegian grocery chain REMA 1000 in the price hunter antitrust investigation carried out by the Norwegian Competition Authority, which in August 2024 saw the NCA fine the three leading grocery chains in Norway a total of NOK 4.9bn.

Representing global supplier of access solutions, Assa Abloy, in private antitrust litigation brought by locksmith company Låssenteret, involving a claim alleging abuse of dominance as well as anti-competitive cooperation, and seeking both damages and actions to end the purported restrictive practices.

Advising ChampionX on the Norwegian merger control aspects of its $8.2bn acquisition by SLB.

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.