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Pierre-Olivier Lavergne-Brossard
Partner & National Head of Business Modelling

Pierre-Olivier Lavergne-Brossard

I talk to hundreds of clients and many of them struggle to create forecasts as it's time-consuming, complex, and often it is not their highest priority. That's where our team comes in – we pull from all their data to create a very powerful element of their decision-making process. It takes time and effort to develop good financial models, but once achieved they can repay this investment many times over. Just as machines extend our physical abilities, models extend our mental abilities, enabling us to understand and control systems beyond our direct intellectual reach.

Partner & National Head of Business Modelling
Financial Advisory

Pierre leads Grant Thornton’s financial modelling services practice nationally. He has over 15 years of experience in financial modelling, valuations, decision support and project financing for large-scale infrastructure / renewable projects and supported the due diligence of several merger and acquisitions opportunities.

As part of the financial modelling services practice, Pierre combines his extensive financial advisory and business modelling experience to assist clients in a variety of business decisions through the development of robust, dynamic and user-friendly financial models to provide better insight and analysis into key decision factors. Typical business decisions in which Pierre advises his clients include:

  • Mergers & acquisitions
  • Tender and bid support transactions
  • Strategic planning and forecasting
  • Investment appraisal and feasibility
  • Project financing 
  • Business start-ups
  • Model audit.


Pierre began his career at Grant Thornton Canada in 2007. He was initially in the Government Infrastructure Advisory team where he advised on several public-private partnerships and large-scale infrastructure projects. In 2010, he joined Grant Thornton’s Corporate Finance team in our Sydney office where he continued helping deliver infrastructure and renewable projects in particular the sectors facing the energy transition and climate change.

In his role as the National Leader of the Financial Modelling practice, Pierre led many marquee transactions including:

  • The global farmland deal of the year for the Lawson Grains acquisition by New Forests Asset Management and the Canadian pension fund Alberta Investment Management Corporation;
  • The divestment of the Tasmanian Forest Trust by New Forests Asset Management;
  • The acquisition of Count Financial Ltd by Countplus Ltd from CBA;
  • The successful award to operate and maintain the Adelaide Metro train service in South Australia by Keolis Downer;
  • The successful award of 500 dwellings on the Social and Affordable Housing Fund by St Vincent De Paul; and
  • A multiple of large-scale renewable (wind, solar, battery, waste to energy and geothermal) projects.
  • Member of the Institute of Chartered Accountants in Australia (CAANZ)
  • Member of the Chartered Professional Accountants of Canada (CPA Canada)
  • Director and authorised representative of Grant Thornton Corporate Finance Pty Limited (AFSL 247140)
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Pierre-Olivier Lavergne-Brossard
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Partner & National Head of Business Modelling
Pierre-Olivier Lavergne-Brossard
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