Mike Winterfield is the Founder and Managing Partner of Active Impact Investments. See sector focus and contact routes.
Mike Winterfield is the Founder and Managing Partner of Active Impact Investments, Canada’s largest climate tech seed fund, with over 20 years of executive experience in software, sales, and venture capital. His investment thesis focuses exclusively on climate tech and clean tech at the seed to Series A stages, targeting enterprise applications, SaaS, and energy tech primarily in the Pacific Northwest and Canada. The firm typically operates as a seed-stage investor, though specific check sizes and lead/follow behavior are not publicly detailed in available sources. Notable portfolio companies include Zeno, which received a $25.0M Series A/debt investment in March 2026, and other early-stage climate startups across 20 tracked companies. Winterfield emphasizes impact investing and clean technologies, serving on the boards of several portfolio companies and advising accelerators like CDL Vancouver Climate. He is a recognized voice in impact investing, featured in episodes such as “Thinking Like an Impact Investor to Raise Money,” where he discusses strategies for impact-focused startups.
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