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Catherine Decoste-Mahseredjian, Associate

Catherine Decoste-Mahseredjian

Associate Fasken
Jurisdiction Québec, 2019
Language(s) French, English
Office(s) Montréal


Catherine is a lawyer in our Corporate Group at the Montréal office. Her practice focuses on private mergers and acquisitions and on securities.

Catherine handles business sales and purchases and corporate reorganizations. She is regularly called upon to work on major interprovincial and international matters, both in English and in French.

She has special expertise in international business purchase/sale transactions, where she works with various global partners.

During her university studies, Catherine completed several co-op placements, including as a law student with a major public food sector company in Quebec and in private practice. She also worked as a research assistant for the Honourable Justice Martin Bureau of the Superior Court of Sherbrooke, and for Professor Marie-Claude Desjardins at Université de Sherbrooke.

Before joining Fasken, Catherine was a lawyer in the business law group of a law firm in the Montréal area.

Client Work

  • Alfar Capital and Walter Capital Partners acquired MSP Corp and combined it with Groupe Access,
  • Clearspring Capital Partners and OneLink Capital invest in Groupe Tecnic and École de conduite Tecnic Rive-Nord alongside one of the founding families,
  • Wavin B.V. acquires Bow Plumbing Group Inc., a leading Montreal-based manufacturer of plastic pipes and fittings,
  • Volex Acquires Terminal & Cable TC and Prodamex,
  • Lattice Semiconductor Acquires Mirametrix,

Career & Education


  • MBA, Business administration and management, general Université de Sherbrooke
  • LLB Université de Sherbrooke

Community involvement

  • Volunteer on the W/Soirée InspirationELLES committee, Generation W (since 2020)
  • Volunteer on the Congress Gala Committee, Young Bar of Montréal (since 2019)
  • President, Business and Investment Law Club (CDAI) (2016-2017)


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