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  • Sebastian Rünz
Sebastian Rünz, LL.M. (Toronto)
Sebastian Rünz, LL.M. (Toronto)

Sebastian Rünz, LL.M. (Toronto)

Salary Partner

  • Duesseldorf Germany
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Featured award

Legal 500 2026

Recommended lawyer for Compliance

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Sebastian advises his clients on the legal integration of sustainability aspects into their compliance management systems. As a trained CSR Manager (IHK) and Co-Head of the newly established Industry Group Environmental, Social, Governance (ESG) at Taylor Wessing Germany, he coordinates and develops the topic of ESG on a cross-practice group level.

Long before the German Supply Chain Due Diligence Act (Lieferkettensorgfaltspflichtengesetz - LkSG) came into force, Sebastian was the first lawyer at Taylor Wessing to build his business case in this area. As a "pioneer" in this field of law, he has developed practical guides, implementation route plans, electronic gap analyses, risk analysis checklists and contract law toolboxes for his clients and has continued to refine them in line with the latest legislation.

His portfolio with regard to the LkSG includes international corporations as well as medium-sized companies.

He regularly shares his expertise on ESG/CSR and in particular on the LkSG in internal and external events as well as via media formats. In this context, he is co-initiator of the podcast Jetzt erst Recht | Der Podcast rund um Nachhaltigkeit and of Taylor Wessing's first digital ESG Academy. Sebastian is also a regular lecturer, e.g. at the Nuremberg Chamber of Industry and Commerce.

Sebastian is also an expert in advising on production, purchasing, sales, distribution as well as a specialist in compliance. His work also includes representing clients in disputes.

Expertise

Services and Groups

Commercial & consumer contracts
Corporate/M&A & capital markets
Environmental, social & governance (ESG)
Compliance
Brazil group
Japan group

Hot Topics

German Supply Chain Act

CV

Since 2022 Salary Partner, Taylor Wessing
2019 – 2021 Senior Associate, Taylor Wessing
2016 – 2019 Associate, Taylor Wessing
2016 Research assistant, commercial and antitrust, Luther
2014 – 2015 Legal trainee, litigation, Hogan Lovells
2012 Research assistant, restructuring and insolvency, Clifford Chance
2021 Certified course CSR-Manager (IHK)
2015 Second state examination, Düsseldorf
2013 – 2015 Legal clerkship, District Court in Wuppertal with stage in São Paulo
2012 – 2013 Master of Laws, University of Toronto
2012 First state examination, Mainz
2006 – 2012 Law student, Johannes Gutenberg-University Mainz with stays in Porto and Nairobi

Career

Since 2022 Salary Partner, Taylor Wessing
2019 – 2021 Senior Associate, Taylor Wessing
2016 – 2019 Associate, Taylor Wessing
2016 Research assistant, commercial and antitrust, Luther
2014 – 2015 Legal trainee, litigation, Hogan Lovells
2012 Research assistant, restructuring and insolvency, Clifford Chance

Education

2021 Certified course CSR-Manager (IHK)
2015 Second state examination, Düsseldorf
2013 – 2015 Legal clerkship, District Court in Wuppertal with stage in São Paulo
2012 – 2013 Master of Laws, University of Toronto
2012 First state examination, Mainz
2006 – 2012 Law student, Johannes Gutenberg-University Mainz with stays in Porto and Nairobi

Publications

Praktische Hinweise und Maßnahmen zur Umsetzung des Lieferkettensorgfaltspflichtengesetzes im Unternehmen, in: Der Betrieb, 12/2021, S. 3078-3084.

Klimaklagen in Deutschland, in: comply, 12/2021. S. 50-52.

Lieferkettensorgfaltspflichtengesetz, in: comply, 10/2021, S. 60-61.

Die Verantwortlichkeit für Menschenrechts- und Umweltschutzverschutzverletzungen in der Lieferkette als neue Gesetzesvorhaben in Deutschland und auf EU-Ebene, in: Nachhaltigkeitsrecht, 06/2021, S. 255-258.

Lieferketten im Blick, in: Umweltmagazin, S. 55, 05/2021.

Der Gesetzesentwurf des Lieferkettengesetzes im Überblick, in: comply, 05/2021, S. 21-23.

Neue Sorgfaltspflichten und Haftungsrisiken in der Lieferkette – Aktuelles zu deutschen und europäischen Gesetzesvorhaben, in: Zeitschrift für Vertriebsrecht, 5/2020, S. 291-297.

Additional languages

English Portuguese

Awards

Legal 500 2026

Featured

Recommended lawyer for Compliance

Legal 500 2025

Recommended lawyer for Compliance

Legal 500 Germany 2024

Recommended lawyer for trade, distribution and logistics

Legal 500 Germany 2024

Recommended lawyer for Compliance

Experience

Taylor Wessing advises US-Based Grant Thornton Advisors in the bidding process for Grant Thornton Germany

Provided comprehensive German legal advice to US-Based Grant Thornton Advisors LLC in the bidding process for the audit firm Grant Thornton Germany.

Press release
Dr. Christian Traichel
Dr. Rebekka Krause
Dr. Ralf B. Tietz, LL.M. (Chicago)
Dr. Christian Dietz
Dr. Marco Hartmann-Rüppel, Dipl.-Volkswirt
Juliane Dost, LL.M. (Medizinrecht)
Katharina Häberle, LL.M. (Medizinrecht)
Dr. Klara Pototzky
Annika Rahn
Sebastian Rünz, LL.M. (Toronto)
Judith Schüler, LL.M.
Lara Nonnenmühlen
Leonard Raphael, LL.M. (Krakau)
Felix Kokorsch
Phillip Heske

Advising Mitel on its transaction to acquire Unify from Atos

We have advised Mitel, a global leader in business communications, on its transaction to acquire Unify, the Unified Communications and Collaboration (UCC) and Communication and Collaboration Services businesses (CCS) of the Atos group.

Press release
Mark Barron
Dr. Christian Traichel
Gilles Amsallem
Elinor Picton
Dr. Rebekka Krause
Dr. Christian Dietz
Marc André Gimmy
Dr. Klara Pototzky
Dr. Michael Kieffer
Sebastian Rünz, LL.M. (Toronto)
Dr. Adrian Birnbach, LL.M. (Stellenbosch)
Dr. Marco Hartmann-Rüppel, Dipl.-Volkswirt
Dr. Nicolai Wiegand, LL.M. (NYU)

Taylor Wessing advises various DAX companies on the German LkSG

Advising various DAX companies as well as other companies from all sectors on legal aspects related to the German Supply Chain Sourcing Obligations Act (Lieferkettensorgfaltspflichtengesetz - LkSG). The scope of our advisory services ranges from needs analysis, implementation and ongoing advice in day-to-day business to strategic, tactical and operational anticipation and support of conflicts and disputes.

Sebastian Rünz, LL.M. (Toronto)
Dr. Martin Rothermel

Taylor Wessing advises an International Chain of Department Stores on the German LkSG

Advising a German international retail chain on various legal issues relating to the LkSG. In particular, advice on examining the scope of application of the LkSG, on conducting a GAP analysis to identify legal gaps, on the involvement of the purchasing department by developing instructions for action in terms of a LkSG-compliant procurement strategy, on checklists for several business areas as well as on liability issues of the management and the purchasing department.

Sebastian Rünz, LL.M. (Toronto)
Dr. Martin Rothermel

Steadfast Capital Fund IV on the acquisition of a majority stake in Söhngen Group

Steadfast Capital Fund IV on the acquisition of a majority stake in Söhngen Group. The transaction included both W. Söhngen GmbH based in Taunusstein (Hesse) and Silva GmbH based in Mainhausen (Hesse). The parties have agreed not to disclose the purchase price. The majority acquisition aims to support further growth of the Söhngen Group with its internationally recognised brands and premium products in the market for first aid and emergency medical products both organically and through acquisitions. We also advised on the financing of the acquisition.

Press release
Maria Weiers
Ulf Gosejacob
Dr. Marcel Leines
Daniel Mursa, LL.M. (Köln/Paris I)
Johannes Simon, LL.M. (Durham)
Dr. Tim Eickmanns
Dr. Jan Kern
Sebastian Rünz, LL.M. (Toronto)

Sebastian's news & insights

View Sebastian's insights
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Commercial & consumer contracts

Complex rules, clear solutions: Your packaging compliance from a single source

27 April 2026

by multiple authors

Glass.Mapper.Sc.Fields.Image?.Alt
Environmental, social & governance (ESG)

Supply Chain Resilience: The ability to act in uncertain times: using the Hormuz blockade as an example

23 March 2026

by Sebastian Rünz, LL.M. (Toronto) and Louis Warnking

Click here to find out more
Glass.Mapper.Sc.Fields.Image?.Alt
Commercial & consumer contracts

LkSG: Transition phase until CSDDD implementation

16 February 2026
Briefing

by multiple authors

Click here to find out more
View Sebastian's insights

Related news & insights

Road Marking
Corporate/M&A & capital markets

Investing in the German Tax Advisory Market: New Rules of the Game Following the 9th StBerG Amendment

28 April 2026
In-depth analysis

by multiple authors

Click here to find out more
Freeway Span
Corporate/M&A & capital markets

Taylor Wessing advises CLS Holdings plc on the sale of “The Brix” in Essen

28 April 2026

by multiple authors

Click here to find out more
wind turbine with blue gray sky
Disputes & investigations

Hamburg Regional Court: validity of the presumption of availability in maintenance contracts

23 April 2026
Briefing

by Kerstin Bär, LL.M. (Bristol, UK)

Click here to find out more
Modern office architecture
China

Industrial Land Reform in China: Expanded Rural Land Market Access and Shortened Land Use Terms

23 April 2026
Briefing

by Stella Yang

Click here to find out more
FinTech Stories
Fintech

#7: State of the EU Crypto Industry: MiCA, Tokenisation and What Comes Next

22 April 2026

by Miroslav Đurić, LL.M.

Click here to find out more
Road Marking
Corporate/M&A & capital markets

Advising Eurofins on the sale of its electrical and electronic testing business for EUR575 million

14 April 2026

by Paul Thorpe and Jack Coventry

Click here to find out more
aerial top view of cars
Disputes & investigations

Climate-based claims against car manufacturers: The Federal Court of Justice (BGH) has dismissed the climate lawsuits brought by DUH

13 April 2026
Briefing

by Matthias Swiderski, LL.M.

Click here to find out more
Inside the Office Building
Corporate/M&A & capital markets

Advising on Sona's US$45 million Series B funding

8 April 2026

by multiple authors

Click here to find out more

Taylor Wessing strengthens Corporate/M&A practice with Equity Partner Jan Hückel

1 April 2026

by multiple authors

Click here to find out more
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Environmental, social & governance (ESG)

Carbon Border Adjustment Mechanism (CBAM): From Reporting to Real Financial Impact

31 March 2026

by Jan Rataj

Click here to find out more
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