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IMM Convening 2026


On March 17-18, 2026, the Impact Principles Secretariat served as an organizing partner for the inaugural IMM Convening for Advanced Practitioners in Montréal, co-convened with the Global Impact Investing Network and Impact Frontiers and hosted by Fondaction and Fondaction Asset Management.

With nearly 100 advanced IMM professionals in attendance, the Convening was structured as a participant-driven experience rather than a traditional conference. Instead of keynotes and panels, it consisted entirely of participant-led sessions on particular topics in IMM, with the agenda set in partnership with participants. This included in-depth discussions on some of the most central topics in IMM, from improving methods for outcome measurement to balancing the drive for standardization with the need to tailor impact approaches to specific investment contexts. We were particularly inspired by the openness of participants – including many Impact Principles Signatories – to candidly share their practices and challenges to advance best practices across the field.

The conversations surfaced a few key takeaways:

  • IMM as a strategy and resourcing question: Building robust IMM systems requires navigating trade-offs across capacity, cost and priorities. Participants explored how to maintain rigor and impact credibility while ensuring relevance for investment decision-making.
  • Transparency as a foundation for effective practice: Clarity around assumptions, methodologies and the intended use of data is essential to ensure impact data is credible, interpretable and useful for stakeholders.
  • Balancing consistency with context: Standardization supports comparability, while flexibility is needed to reflect diverse investment strategies and operating environments. Many practitioners are already applying this balance in ways that support both portfolio-level insight and practical solutions for the broader ecosystem.


Thank you to all the partners and participants for your thoughtful exchange and contributions. We are also grateful to the organizations whose support made this convening possible, including Soros Economic Development Fund, Cambridge Associates, Blue Haven Initiative, Builders Vision, The Rockefeller Foundation, MacArthur Foundation, Calvert Impact, KKR and FinDev Canada.