About

About Us

An M&A advisor with global reach providing deep expertise, attention to detail and continuity throughout the transaction process.

Since 2003, ATRIUM has advised on the sale and acquisition of more than 150 companies. The same experienced partner leads each engagement from the first conversation to closing, supported by a senior team.

We work with both family-owned businesses, private equity firms and larger companies alike, across Denmark as well as internationally.

2003

ATRIUM established

2007

Joined Advior International

42

Countries covered

150

Completed mandates

19B
19bn€

Total deal value

75%

Advisor to the sell-side

Relationships & Commitment

Advisory grounded in trust and long-term relationships.

Choosing an advisor comes down to trust. We build relationships that last. We do what we say and say things as they are.

1

Integrity & Independence

We have no lending activities, no equity research and no proprietary trading. As an independent advisory firm, our only interest is our clients'.

2

Trust & Seniority

We build long-term relationships through continuity, accessibility and clear communication. Our partners remain closely involved throughout every stage of the process.

3

Professionalism

We do what we say we will do. Our advice is grounded in insight, thorough preparation and a deep understanding of both the business and the market.

4

Transparency

Our advice is clear, focused and actionable. We tailor every recommendation to the client's specific objectives and circumstances.

5

Experience & Skills

Our advisory is built on deep financial and industrial experience, developed across more than 150 transactions since 2003. We combine this experience with a commitment to continuous development and specialist expertise.

6

Innovation

We approach every engagement with an open and solution-oriented mindset. The best solution is not always the most obvious one.

Our Team

Senior-led, from start to finish.

Every engagement is led by experienced partners from start to finish. That's the value of senior-led advisory.

Jan Davidsen

Founder & Managing Partner

Jan Davidsen

Founder & Managing Partner
Atrium since
2003
Contact
  1. +45 40 46 28 86
  2. [email protected]

Peter Mahrt

Managing Partner

Peter Mahrt

Managing Partner
Atrium since
2013
Contact
  1. +45 40 42 97 45
  2. [email protected]

Michael Ahlburg Tybring

Partner

Michael Ahlburg Tybring

Partner
Atrium since
2007
Contact
  1. +45 60 29 82 60
  2. [email protected]

Christian Bonde Jacobsen

Partner

Christian Bonde Jacobsen

Partner
Atrium since
2025
Contact
  1. +45 29 77 17 13
  2. [email protected]

Jakob Tvilling Ahrengot

Director

Jakob Tvilling Ahrengot

Director
Atrium since
2018
Contact
  1. +45 60 70 21 01
  2. [email protected]

Alexander Rex

Director

Alexander Rex

Director
Atrium since
2021
Contact
  1. +45 21 33 55 20
  2. [email protected]

Amanda Marie Møller

Associate

Amanda Marie Møller

Associate
Atrium since
2022
Contact
  1. +45 28 93 07 46
  2. [email protected]

Lau von Fyren K. Ekelund

Associate

Lau von Fyren K. Ekelund

Associate
Atrium since
2025
Contact
  1. +45 22 46 00 44
  2. [email protected]

William Winther-Schmidt

Associate

William Winther-Schmidt

Associate
Atrium since
2025
Contact
  1. +45 31 34 41 12
  2. [email protected]

Jonathan Leth

Associate

Jonathan Leth

Associate
Atrium since
2026
Contact
  1. +45 66 46 36 07
  2. [email protected]

Christoffer Siwmark

Analyst

Christoffer Siwmark

Analyst
Atrium since
2025
Contact
  1. +45 39 48 10 10
  2. [email protected]

Mikala Mccormick

Office Manager

Mikala Mccormick

Office Manager
Atrium since
2022
Contact
  1. +45 39 48 10 10
  2. [email protected]
review-background

Successful outcomes stem from experience, thoroughness and sound judgement.

We believe trust is earned through transparency, consistency and follow-through. We invest the time and attention required to achieve well-considered outcomes that create long-term value.

International reach

As a member of ADVIOR International, ATRIUM combines local expertise with access to a global network spanning more than 40 countries.

When a transaction requires international reach, we work closely with trusted ADVIOR partners to connect clients with buyers, sector specialists and local market insight.

ADVIOR International is represented across Europe's key markets, North America and India.

Read more about ADVIOR International

Our Global Partners

Europe
Smith Square Partners
United Kingdom
51.505901, -0.138405
AZ Capital S.L.
Spain
40.419212, -3.692517
Alpha Corporate Finance
Norway
59.907096, 10.720840
Rembrandt Mergers & Acquisitions
Netherlands
52.347720, 4.920337
Colombo Advisory
Italy
45.471444, 9.190869
DZ Bank
Germany
50.110910, 8.662391
Wagram Corporate Finance
France
48.871525, 2.332721
SDM Finance Group
Belgium
51.144824, 3.243585
ASIA
Raiffeisen Investment Türkiye
Türkiye
41.079993, 29.030962
Nuvama Group
India
19.063445, 72.857833
North America
Sonenshine Partners
USA
40.762788, -73.969092

Would you like to hear our perspective?

Whether you are exploring your options or preparing for a transaction, our experienced team is available for a confidential discussion.