Marissa Kirsh

Marissa’s practice covers many areas of corporate and commercial law, with a focus on the energy, financial services, and infrastructure sectors. She has worked on a variety of complex transactions related to public-private partnerships, project financings of major renewable energy projects, acquisitions and sales of large energy and infrastructure projects, syndicated credit facilities and partnering agreements. Marissa has experience representing a broad range of clients, including corporate borrowers and lenders, including developers, equity sponsors, contractors, and banks.

Representative Work

  • The Senior Creditors to Connect 6ix General Partnership in connection with the $9 Billion Ontario Line Rolling Stock, Systems, Operations and Maintenance Project procured by Infrastructure Ontario and Metrolinx.  The Senior Creditor Group represented by Osler included:  (i) TD Securities Inc. and National Bank Financial Inc., in connection with an underwritten private placement of senior bonds issued by Connect 6ix; (ii) ATB Financial Inc., DZ Bank AG, Korea Development Bank, National Bank of Canada, The Norinchukin Bank and Sumitomo Mitsui Banking Corporation in connection with a revolving credit facility and associated hedging arrangements and (iii) Japan Bank for International Cooperation in connection with a term loan facility
  • iCON Infrastructure in its agreement to acquire Capstone Infrastructure for $480 million

Latest Insights

  • Blog Mar 10, 2021

    Long term recovery from COVID-19: A primer on LEEFF and its current impact on economic recovery

    As part of the multi-faceted response implemented by the federal government to deal with the economic fallout of the COVID-19 pandemic...

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    Long term recovery from COVID-19: A primer on LEEFF and its current impact on economic recovery
  • Osler Update Jun 6, 2017

    Ontario government revamps Construction Lien Act: What you need to know about prompt payment, mandatory adjudication, and more

    The Ontario government introduced Bill 142 that, if passed, would significantly amend the Construction Lien Act to create a prompt payment regime, req...

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Awards and Recognition

  • Chambers Canada: Canada’s Leading Lawyers for Business: Recognized in Projects: PPP & Infrastructure

Media Mentions

  • Osler News Feb 16, 2024

    Osler welcomes seven new partners and one new counsel in 2024

    Osler is pleased to announce the addition of seven new partners and one new counsel across our offices in Toronto, Montréal, Calgary and Vancouver, ef...

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  • University of Ottawa, J.D.
  • University of Edinburgh and Heriot-Watt University, M.Sc.
  • McGill University, B.Eng.


  • English

Professional Affiliations

  • Law Society of Ontario