Marie Sinniger

Marie Sinniger

Marie Sinniger


T +352 27484 1

Avocat à la Cour

Areas of practice

Marie Sinniger is a Partner of the Corporate/M&A practice and head of the Employment practice of Luther's Luxembourg office.

Marie advises domestic and international clients on corporate law, mergers and acquisitions, corporate and debt restructuring, and debt and equity financing.

She also focuses on contentious and non-contentious employment law aspects, such as drafting and terminating employment contracts, handling employment issues in the context of corporate restructuring operations, cross-border employment issues, collective bargaining, staff representation, and employee benefits.


Marie Sinniger obtained a Master's Degree in Business Law and a Post-Graduate Degree in International Business Law from the University of Nancy II in France.

She was admitted to the Luxembourg Bar in 2008. Prior to joining Luther in 2010, she worked in the corporate department of a renowned independent Luxembourg law firm.

Honors and distinctions
  • Legal 500 EMEA (2021): Recognised for Employment: ‘We were very happy with the service and legal advice delivered in labour law by Anne-Laure Wach and Marie Sinniger. The overviews and meetings with them were elaborate, precise and clear.(…) I will definitely go back to them if we have a new case. ’Marie Sinniger was an invaluable resource when it came to protecting our rights in the courtroom. [She was] very accessible, diligent, and dependable.’
  • IFLR1000 (2020): Ranked in M&A as Rising star. Clients say: "[Marie] is a real professional and she makes all legal matters simple for us. Highly recommend her services." Described as "very client-oriented and very effective."
  • Legal 500 EMEA (2018): Recognised for Commercial, Corporate and M&A. “Marie Sinniger is ‘commercial and flexible’.”
  • IFLR1000 (2019): Ranked in M&A as Rising star
  • Legal 500 (2018): Recognised for Commercial, Corporate and M&A: "Marie Sinniger is 'commercial and flexible'."