SIRIUS advokater > Copenhagen, Denmark > Firm Profile

SIRIUS advokater

Denmark > Employment Tier 2

With a ‘high level of experience and a proactive approach‘, the team at SIRIUS advokater acts for both employers and employees in individual and collective employment matters. The team advises on restructurings and employment contracts, with an emphasis on commercial disputes and business transfers. Pernille Backhausen and Benjamin Lundström jointly head up the practice; Backhausen is known for her ‘high level skills and deep knowledge’ of executive benefits and compensation work, and Lundström primarily handles disputes and also advises on terminations and severance agreements.

Practice head(s):

Pernille Backhausen; Benjamin Lundström

Other key lawyers:

Peter Breum; Jacob Goldschmidt; Helle Nøhr Larsen


‘The team has a high level of experience and a proactive approach to challenges. They are professional and committed.’

‘Pernille Backhausen continuously impresses with her high level skills and deep knowledge within employment.’

Key clients

Danske Hospitalsklovne

BLS Capital Group

The Ministry of Justice

Frank J. Clausen

HK Privat

Novavi Foundation

The municipality of Gladsaxe

Red Cross

Juhler Holding A/S


Denmark > Environment Tier 2

SIRIUS advokater‘s ‘incredibly talented‘ team advises clients of the full scope of environmental matters, including waste-water disposal and water supply issues, conservation areas, and protected species. The team serves a diverse client base of private individuals, utility companies and municipalities. Søren Stenderup Jensen leads the team alongside Kurt Helles Bardeleben. Jensen has notable contentious expertise, often appearing before the Supreme Court and the Environmental and Food Board of Appeal in cases concerning soil contamination and expropiation, while Bardeleben represents public authorities, domestic corporates and property developers.

Practice head(s):

Søren Stenderup Jensen; Kurt Helles Bardeleben


‘The leading practice in Denmark, Sirius Advokater is highly professional and specialised. They always deliver high quality.’

‘Søren Stenderup Jensen provides top-level advice based on extensive experience. He is supported by a very talented team.’

‘The team possesses incredible talent, knowledge of relevant legislation, but also an exceptional eye for the process of a case.’

‘They are incredibly talented and very accessible. They understand the way our business works and their counsel always takes that into account.’

Key clients

NCC Industry A/S

Trelleborg AB

Telenor A/S

Nordic Waterproofing A/S

Municipality of Køge

Arwos Forsyning A/S

Din Forsyning A/S

SK Forsyning A/S

NK-Forsyning A/S

KLAR Forsyning A/S

Clearidium A/S


UTF Holding ApS

Taasinge Elementer A/S


FSK Foreningen Skaansomt Kystfiskeri

Municiplality of Stevns

Field’s A/S

Indsamling på Tværs I/S

Denmark > Real estate and construction

The ‘incredibly talented’ team at SIRIUS advokater often ‘goes the extra mile‘ when advising on regulatory matters concerning social housing issues, construction disputes and real estate M&A transactions. Kim Ørnstrup Rasmussen co-leads the construction practice alongside Tina Ortega; Ortega has key experience in handling arbitration proceedings, and Rasmussen defends against claims from the Building and Property Agency. Kurt Helles Bardeleben advises social housing organisations on PPP and infrastructure projects, and Thomas Grønkær primarily advises suppliers and public authorities on public procurement matters. The ‘highly experiencedJoachim Ørum Petersen assists both public organisations and public companies with business leases and project development work and excels in real estate transactions.

Practice head(s):

Kim Ørnstrup Rasmussen; Tina Ortega; Kurt Helles Bardeleben; Joachim Ørum Petersen; Thomas Grønkær

Other key lawyers:

Marc Walther Hansen


‘SIRIUS advokater has shown great knowledge and execution. It is a true pleasure working with the team from SIRIUS.’

‘SIRIUS advokater offer professional, efficient, flexible and highly competent legal assistance and good professional help throughout all parts of the process. They are one of the top law firms in Denmark.’

Joachim Ørum Petersen stands out. He is highly experienced, straightforward and very clear in his good and supportive advice, and he aims to be fair and sympathetic – Joachim earns my highest recommendations.’

‘The team is highly qualified and very service-minded and manages to explain difficult legal dilemmas in a simple and clear way.’

‘Marc Walther Hansen shows incredible professionalism and truly displays his skills, he is an excellent teacher.’

‘Tina Ortega and her team are strong. They are champions.’

‘SIRIUS are always willing to go the extra mile to find the best fit solution for any challenge. The team is outstanding combined with a practical and down to earth approach.’

‘The team is incredibly talented and have a great knowledge on how we run our business. Their counsel always takes that into account.’

Key clients

The Danish Building Defects Fund

Instalaciones Inabensa SA

CSK Stålindustri A/S

DSV Road A/S

DSV Panalpina A/S

DSV Road Holding ApS

AKF Holding A/S

COBE arkitekter

Elindco A/S

Enemærke & Petersen

SK Forsyning A/S

Over Byen Arkitekter

Arkitema Architects

Taasinge Elementer A/S

Entreprenørfirmaet Einar Kornerup A/S

UTF Holding ApS

UTF Invest Nordsjælland ApS

Stay Properties ApS

Esbønderup Invest ApS

Viggo Pedersen & Søn A/S Byggeentreprise

Nectar Asset Management ApS

Protica Development ApS

Sund & Bælt Holding A/S

Københavns Kommune

Køge Kommune




Allerød Kommune


2M El-Installation A/S


Hein 1 ApS


Athena Partners ApS

Høje Taastrup Forsyning

Ejendomsfonden Naturkraft

Sundmolen 5.01 ApS

Jørgensen & Sønner A/S

Sommer Metalvarefabrik K/S

Lokaltog A/S

Nectar Asset Management ApS

Thalbitzer & Hassenkamm Holding 2019 ApS


UTF Holding IV ApS

Denmark > Dispute resolution Tier 4

Denmark > Commercial, corporate and M&A Tier 5

The ‘professional, pleasant, welcoming and accessible‘ team at SIRIUS advokater assists clients with a broad range of M&A, corporate and commercial issues. Practice head Olaf Carl Ehrenskjöld advises domestic and international companies and funds on commercial matters. Anders Kjær Dybdahl joined the team from Poul Schmith in May 2022, and regularly advises on ownership structures and conflicts, while Joachim Ørum Petersen advises logistics and investment companies on transactional matters.

Practice head(s):

Olaf Carl Ehrenskjöld

Other key lawyers:

Flemming Pristed; Benjamin Lundström; Joachim Ørum Petersen; Anders Kjær Dybdahl


‘Strong one-stop shop across M&A, fundraising, commercial agreements, regulatory assessment & development and employment law. Specific deep competency in fintech and technology in general.’

‘Integrity and commitment. Sirius has won the trust in the company from shareholder to executive management. With an ability to drive efficient interactions from business development to the board room.’

‘We had the best possible experience with Anders Dybdahl and his team, who show a strong commitment to the process, and collaborated efficiently with all stakeholders.’

‘Anders Kjær Dybdahl shows strong professionalism, commitment, and loyalty. He is a hands on, commercial and pragmatic lawyer who quickly understands the difficult intricacies that apply to cross border transactions.’

‘Good culture combined with expertise and professionalism.’

‘Joachim Ørum Petersen always delivers a high level of detail and engagement in his work and has a second-to-none skill set when it comes to company law and company restructuring.’

‘Professional, pleasant, welcoming and accessible team, very detailed knowledge, and very strong negotiators. The team is trustworthy and skilled in general corporate/commercial law.

Key clients

DSV Panalpina A/S (DSV Group)

M. Goldschmidt A/S

Medpro Clinic Sweden AB

Nordic Waterproofing A/S

Taasinge Elementer A/S

BLS Finans A/S /BLS Capital Fondsmæglerselskab A/S

Bikuben Fonden

NIL Technology ApS

Ellegaard Göttingen Minipigs A/S

Peter Möller Group AG and subsidiaries

Urban Core ApS

Jespers Torvekøkken ApS

Sirius Home A/S

Emply ApS

ChronosHub ApS

H.W. Larsen A/S

Flash Light A/S


Roskilde Festival Charity Society

Creative Company A/S

Calldorado ApS

Nordic Corporate Investment A/S


Spring Nordic ApS and CAT Fonden

Carve Consulting P/S

Kvadrat Soft Cells A/S

Fire Eater A/S

CEMS ApS and subsidiaries

Thiim A/S

Schades A/S and subsidiaries

EPAM Systems ApS

Nordic Solution A/S

Simple Revolution ApS


WorldTicket A/S

Wolters Kluwer/CT Corporation

NCC Group

On the Beach Ltd

Bending Spoons Apps ApS and affiliates

UTF Holding ApS and subsidiaries (UTF Group)

McKinsey & Company Denmark P/S

Rosti A/S

Cems ApS and subsidiaries

Stay Properties ApS and subsidiaries

Foodoptimize ApS

ATLANT 3D Nanosystems ApS

Hartvig Gruppen

7 Days ApS

Eksponent ApS

Sterisafe Holding A/S

Neder Kjærsholm Holding ApS (formerly DanBoring Holding ApS)

MHS Corporate Finance ApS

Lago Holding ApS

HedeDanmark A/S

Indoordesign ApS

Allan Plough A/S

Work highlights

  • Advised Agreena ApS on its acquisition of Hummingbird Technologies.
  • Advised Neder Kjærsholm Holding ApS (formerly Danboring Holding ApS) on the sale of approx. 90% of the shares in Danboring A/S to a Swedish founded investment company (Storskogen) which is specialised in acquiring and operating small and medium-sized companies.

The firm: SIRIUS advokater was founded some 12 years ago by Pernille Backhausen. The overall goal of SIRIUS advokater is to deliver clear legal solutions precisely reflecting our clients’ needs. We believe that this is best done by acting in a professional and personable fashion both internally and externally. We are strongly committed to continuous training and treating each other with respect, supporting a proper work life balance and being a responsible player within society. SIRIUS advokater has grown considerably over recent years and now has more than 35 lawyers. In the past years, SIRIUS has expanded their circle of partners with prominent profiles in for instance the areas of Construction Law and Real Estate, and Employment and Labour Law. Furthermore, their department for M&A has shown continuous growth with a new profiled partner joining.


Areas of practice: SIRIUS advokater is a specialized law firm that has exceptional qualifications to carry through clients’ legal challenges within our fields of specialization. The partners are very experienced within the fields in which they work; yet they are curious and committed to expand their legal knowledge so that the firm’s clients have access to a broader range of advice.

Associations and Foundations - Charity Law Kim Pedersen
Associations and Foundations - Charity Law Aleksander Pilgaard
Mergers and Acquisitions Anders Kjær Dybdal
Corporate Law and Mergers and Acquisitions Joachim Ørum Petersen
Corporate Law and Mergers and Acquisitions Benjamin Lundström
Construction Law, Procurement Law, Real Estate and Commercial Leasing Kim Ørnstrup Rasmussen
Dispute resolution - litigation, arbitration, mediation and amicable settlements Benjamin Lundström
Dispute resolution - litigation, arbitration, mediation and amicable settlements Søren Stenderup Jensen
Employment and Labour Law Pernille Backhausen
Employment and Labour Law Benjamin Lundström
Insurance and Compensation Helle Hald
Insurance and Compensation Kim Pedersen
Intellectual Property Law Gitte Løvgren Larsen
Tax Kim Pedersen
Public regulation - Environmental law - planning law Søren Stenderup Jensen
Public regulation - Environmental law - planning law Pernille Backhausen
Commercial Contracts Gitte Løvgren Larsen
Company Law and Commercial Law Anders Kjær Dybdahl
Danish and other Scandinavian languages