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Alexandra Guillaume's practice focuses on all aspects of EU competition law, including merger control, anticompetitive agreements, cartels, and abuse of dominance.

Prior to joining Jones Day in 2020, Alexandra completed traineeships at the Directorate-General (DG) for Competition of the European Commission and in the Brussels offices of leading international law firms.


  • Bombardier to sell transportation business to Alstom for €6.2 billionJones Day is serving as antitrust and French corporate counsel in the €6.2 billion sale of Bombardier Inc.'s transportation business to Alstom S.A.
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